Western developers have created an integrated solar cell with carbon nitride photoanodes

Research group at the Institute for Solid State Research named after Max Planck, led by Professor Bettina Lotch, recently introduced a sustainable integrated solar cell design based on common materials. Their design is based on a carbon nitride bifunctional photoanode (K-PHI) that can absorb light and store electrical charge.

The field of solar cell research is still young and therefore very diverse in concepts and ideas with different levels of integration. Integration means that two functions - light energy conversion and energy storage - are built into one device. This can be done through various approaches, for example by adding a photoactive electrode to the battery or by using a bifunctional electrode material. However, integration can also affect charge transfer

— said one of the researchers Andreas Gouder.

Essentially, when batteries are charged with light, one of the photogenerated charge carriers must be transferred from the photoactive electrode to the other electrode.

Professors Lotch, Gowder and their colleagues decided to create a battery in which this process would take place inside. To do this, they have implemented a multifunctional separator that separates the two electrodes inside their battery.

The battery, created by the researchers, consists of two electrodes (anode and cathode) and a separator between them. Light absorption is carried out by an anode made of carbon nitride. Photogenerated electrons are accumulated directly into carbon nitride, and photogenerated holes (positive carriers) are transferred to a cathode made of PEDOT:PSS conductive organic polymer.

The development scientists evaluated their solar array in a series of tests and found it to be producing promising results. Sunlight can contribute to the charging of the solar array or the process of charging and discharging. The researchers found that their solution, applied to both the charging and discharging processes, significantly increased the energy extracted - by 94,1% compared to when the battery was operating like conventional batteries in the dark.

The integrated solar cell design proposed by this group of researchers may soon inspire other teams to create similar sustainable cells based on carbon nitride photoanodes or using separators. Meanwhile, the researchers plan to further improve their technology, improve its energy efficiency and facilitate its commercialization. It is noted that such a technology may be in demand in the exploration of outer space.

Comments

[Jean Baptiste]

Ha, and we are resuming the production of engines from 53 lawn, we are also not standing still! In general, it’s sad that our economy is structured in such a way that we can’t use cheap gas (and, accordingly, light) with a terrible surplus of it, and even if it was cheap, we can’t extract added value from this (well, like making a lot of iron and building in each the city has as many bridges as it needs, and not as many as the communists had time)

[QuestionsNeudobny]

"engine from 53 lawn" (presumably - GAZ-53) is still in working order. but where are the motors of the same Ford of 2000s now? optimization, consolidation, blm and other ... disposable products, like #2. so it’s not a fact what is optimal, and what is subject to obstruction

[tTshka]

"You" have a counterattack soon, and then another one hundredth mobilization, go feed the geese ...

[Aristarkh Pasechnik]

What doesn't suit you? 511 engine, the carb was removed on it, now injection, the power was dispersed to 200 hp. Let them release! The only thing is the stuffing of the rear root! If they replace it with an oil seal, then a normal motor!

[Ady66]

Very normal, even with a carburetor. For example, for me, the Taz classic with a carburetor gave out for CO - euro 4, and for CH - euro 3.

[Blacksmith 55]

Yes, the rear root, it was a headache for everyone who drove the GAZ 53.
Permanent loss of oil.
But the information is amazing. Is there really no way to create something quite modern?
Really, somewhere 60 years old, down the drain?

[Million]

If a normal stuffing box is put on Gaz 53 instead of a packing, it will be a technological breakthrough in 50 years!)))
Imagine what minds are sitting in Gaza!

[ABC-schutze]

Sorry, but the aforementioned "communists" somehow "did not have time" to explain to me what the phrase "CHARGING" of a solar battery means? The light in the photocells, from which the mentioned battery is assembled, excites the photo-emf. Photo-EMF, being "summed up" by all elements of the solar battery, when connected to the last "load" (or consumers of electricity), gives an electric CURRENT to the load. As long as there is external photon irradiation of the photocells of the battery...

If this irradiation disappears, it seems that "recombination" of the carriers accumulated on the "electrodes" (the aforementioned "electrons" and "holes") should begin. Those. - reduction of the electric charge accumulated by the photocell during irradiation...

So, what is the "trick"? .. That in one solar battery, in fact, TWO are technologically formed? .. One of which, during irradiation, "gives" part of its charge to the other ("disconnected" from the load), which starts to "work" when the process of photon irradiation is absent?...

But in this case, the "requirements" for the intensity of the irradiating photon flux should be, roughly speaking, "twice as high". To provide sufficient energy for the process of "charge synthesis", not only to generate current, but also to "accumulate charge" ...

Would you be so kind as to bring some clarity here? ..

[orionvitt]

Quote: ABC-schütze

"didn't have time" to explain to me what the phrase "CHARGING" of the solar battery means?

Do not worry. Soon the next "British scientists" will invent new windmills that store wind in their blades and then blow on themselves.

[tralflot1832]

If for space, for starters, the earthlings need to wait a while to put these batteries in the dacha. The price is probably easier to stretch the line to the dacha.

[Ady66]

Under current conditions, just to get a 380 volt 15 kW connection to your home, you need to pay 3000 rubles for each kilowatt. And this is not everywhere, by region it looks like this:
Leningrad region - 8700 rubles / kW,
Moscow region - 8345,85 rubles / kW,
Sverdlovsk region - 7000 rubles / kW,
Chelyabinsk region - 5423,11 rubles / kW,
Rostov region - 5303,76 rubles / kW,
St. Petersburg - 4437 rubles / kW,
Kemerovo region - 4320 rubles / kW,
Stavropol Territory - 3766 rubles / kW,
Moscow — 3000 rub/kW,
Altai Territory - 3000 rubles / kW,
Volgograd region - 3000 rubles / kW,
Voronezh region - 3000 rubles / kW,
Irkutsk region - 3000 rubles / kW,
Krasnodar Territory - 3000 rubles / kW,
Krasnoyarsk Territory - 3000 rubles / kW,
Nizhny Novgorod region - 3000 rubles / kW,
Novosibirsk region - 3000 rubles / kW,
Orenburg region - 3000 rubles / kW,
Perm Territory - 3000 rubles / kW,
Republic of Bashkortostan - 3000 rubles / kW,
Republic of Crimea - 3000 rubles / kW,
Republic of Tatarstan - 3000 rubles / kW,
Samara region - 3000 rubles / kW,
Saratov region - 3000 rubles / kW,
Tyumen region - 3000 rubles / kW,

[tralflot1832]

I connected for 40 rubles 000 years ago, the same 10 kWh + 15 rubles to a "certified" electrician.

[Ady66]

Well, I already got a connected one, and so with our tariff of 7000 rubles. The cost of connection is 15x7000=105000 rupees, and this is without an electrician.

[Zoldat_A]

Quote: tralflot1832

If for space, for starters, the earthlings need to wait a while to put these batteries in the dacha. The price is probably easier to stretch the line to the dacha.

In all seriousness, a few years ago I got excited about the idea of ​​\uXNUMXb\uXNUMXb"green energy" in the country. It’s not suitable for a house - there you need to clear six neighboring plots for solar panels, but it seemed suitable for a summer residence.

Solar panels were dismissed immediately due to the price and, again, low efficiency per square meter.
He began to look closely at the windmill, and caught fire with his own hands to. I found where to buy components, dug up technology on the Internet and then picked up a calculator ...
At first I thought that "handmade" is so expensive. I recalculated - a ready-made kit costs quite absurd money at the power of "light two bulbs and charge the phone." And I have welding, and various metal and woodworking toys, TV-refrigerators ...
In short, I spat on this idea from the word "absolutely" - I don’t even remember. As long as the Volga flows, as long as there are hydroelectric power stations on it, my light bulbs will burn even without this whim.

And further...
A multifunctional separator, photoanode electrodes, carbon nitrides - this, of course, is all good.
Just how they will pull out such a wonderful technology in their Stuttgart (Max Planck Institute for Solid State Research) without Russian gas and Chinese production - I DO NOT KNOW ...
It will end with the fact that again the Americans will unscrew the technologists, patent them - and then? Again, the Chinese are needed ...

[tralflot1832]

At first, I also got excited about this idea for the house. Then I spat when I counted. Moreover, the locals explained that when friends - Armenians (neighbors) switch to "green" energy, then the time has come.

[Ady66]

A windmill is difficult, expensive and unreliable, in addition, the wind is not everywhere the desired speed, but it is desirable that the speed throughout the year be approximately the same, because different windmill designs are needed for different speeds. Solar panels, easier. Even with a low specific return. As a rule, they work on batteries that are charged during the day, and the consumption from the batteries goes in the evening and in the morning. In any case, several sources of energy are needed, including the power grid. Although you can get by with solar panels, coupled with a windmill. But in any version of the batteries, a LOT, well, a LOT is required. It is expensive.

[tralflot1832]

If there was still access to batteries with submarines (free), then this question is interesting.

[Bad_gr]

There are many videos on Youtube about private owners who solved their problems with electricity supply in private houses and summer cottages. If you watch five films, then there will be a more or less objective presentation on this topic.
In general, I got the impression that solar + wind energy for the home justifies itself in terms of money only if there are no other alternatives (a house in the mountains, in the steppe, etc.). If the power supply is unstable, with the help of solar panels + wind generation, you can increase its reliability (power supply at home).
Batteries at the moment the most profitable for these cases are LiFePo4 (Lithium Iron Phosphate) (LFP). Their price is several times higher than that of lead. but they beat off their price due to their long life (depending on operation, up to 5000 charge-discharge cycles) and higher efficiency (almost twice as high as that of lead). Some varieties of these batteries are also operable at sub-zero temperatures (from -20°C).
If I had a private house, I would definitely install a solar battery (with an appropriate body kit of batteries and an inverter). Not for all the power needed for the house, but at least for the necessary things. You can't be 100% dependent on third parties.

[Zoldat_A]

Quote: Bad_gr

There are many videos on Youtube about private owners who solved their problems with electricity supply in private houses and summer cottages. If you watch five films, then there will be a more or less objective presentation on this topic.

Moreover, there will be a firm belief that "I will succeed too" and that all this is mega-profitable and you can completely abandon the central power supply.

But all this confidence is broken by a simple calculator.

.

Quote: Bad_gr

solar + wind energy for the home justifies itself in terms of money only if there are no other alternatives (a house in the mountains, in the steppe, etc.). If the power supply is unstable, with the help of solar panels + wind generation, you can increase its reliability (power supply at home).

You can, of course, warm up the kettle with a lens from glasses, if you try hard. But all this pampering can only be started if there is absolutely nowhere to attach extra money and the central power supply is cut down for some reason every day for 15 hours. I will pay. The people in our village are not poor, many live entirely on electric heating, for example, in the presence of gas. That is why nobody wants to lose such payers. A few years ago, they put in new transformers, four of them. My neighbor and I installed a stabilizer the size of about half the size of a Khrushchev's kitchen for two, and now you can engage in "green energy" at your leisure and for the soul, and not like Europe - "even if it's three times more expensive, but you don't have to depend on anyone."

[Bad_gr]

Quote: Zoldat_A

Moreover, there will be a firm belief that "I will succeed too" and that all this is mega-profitable and you can completely abandon the central power supply.

This is after watching how many videos such a conclusion arose?

Quote: Zoldat_A

But all this pampering can only be started if there is absolutely nowhere to attach extra money and the central power supply is cut down for some reason every day for 15 hours .....

I live in Sochi. With electricity was - a sin to complain. But somehow in winter, at a negative temperature, it was raining. Droplets, falling on the wires, turned into ice. Wires began to break from the weight of the ice. And when the wires come off on one side of the high-voltage line pole, the remaining iced wires pull the pole in their direction. The supports of the main lines of 110 and 220 thousand volts fell. And the city was left in the winter, in the snow, without electricity, without water and sewerage, and, accordingly, without heating - and all this joy, for three weeks. People living in private homes have options. But most of the population here lives in Khrushchev and skyscrapers.
It wasn't fun at all.
And if there is a solar panel, at least a square meter (it is quite possible to fix it next to the window), then there is already the opportunity to listen to the radio, charge the phone and rechargeable flashlights, watch something on a small TV. No longer separated from the world.

[Zoldat_A]

Quote: Bad_gr

I live in Sochi. With electricity was - a sin to complain. But somehow in winter, at a negative temperature, it was raining. Droplets, falling on the wires, turned into ice. Wires began to break from the weight of the ice. And when the wires come off on one side of the high-voltage line pole, the remaining iced wires pull the pole in their direction. The supports of the main lines of 110 and 220 thousand volts fell. And the city was left in the winter, in the snow, without electricity, without water and sewerage, and, accordingly, without heating - and all this joy, for three weeks.

Well, this is from the category of natural disasters that provoked an accident. You can't argue with nature, but to eliminate the accident - you need to be able to work. And you have three weeks - the relevant services should be well weighed in the neck. Because an accident is when its consequences are eliminated in an emergency, emergency mode. And three weeks, yes, at 110 and 220 kilovolts - this is not even "with smoke breaks", this is called "sabotage". The heads of services at such a time should live at the facility in the kung - I have had this happen a couple of times in my life. Your bosses should be judged for such an attitude to the matter. As a last resort - supply manager in Syktyvkar.

In our village, before the installation of new transformers, electricity was cut off a couple of times a week for 10-30 minutes. The line was to the second branch of some state farm, the designers did not really bother with laying a new one. They "modernized" the old one and hung a cottage settlement on it. It's good that people who are not the simplest people live in the village - in the end they forced them to do it according to their minds.
So a meter-by-meter panel is good, but a hydroelectric power station is more reliable ... But in the "green energy" I personally was disappointed at the household level. And the Germans dream of an industrial scale, therefore, insane, they cut down the last forests in order to put windmills.

[Bad_gr]

Quote: Zoldat_A

but to eliminate the accident - you need to be able to work. And you have three weeks - the relevant services should be well weighed in the neck. Because an accident is when its consequences are eliminated in an emergency, emergency mode. And three weeks, but at 110 and 220 kilovolts - this is not even "with smoke breaks", this is called "sabotage" ......

Somehow cablemen came from the Kuban to teach the Sochi cablemen how to work correctly. We took upon ourselves the obligation to stretch more than 100 lines (various objects) in a month. By the end of the month they made the 4th.
I think you have the same idea about the works in Sochi.

Photo of a fragment of the line that was being restored. This is Golovinka. High voltage pylons are on the slopes. The span distance between the supports is more than a kilometer. The sag of the wires on this span, if my memory serves me right, is more than 60 meters. Here add snow or sleet, frost at night, mostly slush during the day. It is necessary to remove the old, broken supports, drag, assemble and install new ones. Stretch wires between them. All this is on the slopes of the mountains, where you can’t really find an entrance.

Do you know this kind of weather? During the restoration of the line, this was from time to time

[Bad_gr]

I forgot to say that about 110 tens of high-voltage supports of lines 220 - 3 kilovolts, during this event, collapsed. The icy wire, together with ice, had a diameter comparable to a three-liter jar.
In addition, the city wiring 10-6 kV + 380 V was laid down. A person familiar with the power grid recalled a case when, due to weather conditions, more than 500 poles with electrical wiring 10-6kv + 380v lay down in the city at a time.
With electricity, you need insurance, at least at a minimum.

[Bad_gr]

Quote: Bad_gr

There are many videos on Youtube about private owners who solved their problems with electricity supply in private houses and summer cottages. If you watch five films, then there will be a more or less objective presentation on this topic.

Quote: Zoldat_A

Moreover, there will be a firm belief that "I will succeed too" and that all this is mega-profitable and you can completely abandon the central power supply.
But all this confidence is broken by a simple calculator.

Your conclusions are at the level of divination on coffee grounds. Now on YouTube, most of the videos about autonomous power supply from Ukraine, where the civilian population solves their problems with electricity (some in apartments - an inverter with batteries dominate there, some in a private house - here is the whole range of equipment that was just invented to solve such problems). In general, there is where to peep smart solutions and take into account other people's mistakes, if you suddenly need (or just want to) increase your independence from third-party organizations.

[QuestionsNeudobny]

based on the fact that in the West they love loud statements and bright headlines, I quite believe that this news is from the category of "attracting attention and money"
from covid they also whistled about 100% vaccines exclusively of Western production

[fiv]

Sunlight can contribute to the charging of the solar array or the process of charging and discharging. The researchers found that their solution, applied to both the charging and discharging processes, significantly increased the energy extracted - by 94,1% compared to when the battery was operating like conventional batteries in the dark.

The news is presented painfully tongue-tied. If the translator were an engineer, maybe it would make more sense. Carbon nitride has been known for a long time. The only thing that is clear, they decided to combine the photocell with the battery electrode. The decision is debatable, in fact.

[Ady66]

From the text, I realized that not just with the battery electrode, but to combine the solar panel with the battery in one package.

[Aristarkh Pasechnik]

Something "green energy" does not really help in winter!

[Kostadinov]

I still don't understand where the progress is. The sun does not shine stronger and more than 1 kilowatt per hour of energy per square meter for 2-3 hours and only on a sunny day. This is the maximum that can be used on our planet. Then comes the efficiency of transforming sunlight into electricity or heat energy, which is always much less than 100%, and then the accumulated energy is accumulated in various ways, which is also much less than 100%.

[Ivan Ivanov]

"Western developers" are certainly beautiful, you just need to remember

"The dollar is America's last surviving superpower, it provides unrivaled military and political power, with its help the US can isolate countries from the world economy, Washington can spend as much as it wants, confident that the rest of the world will buy its dollar if the big countries manage to create an alternative system America is facing a reckoning the world has never seen before."

Until that happens, the West can buy any talent for the dollar price of paper and paint.

[Maks1995]

Another solar cell technology. Looks like there are a lot of them
Looks good for the price/quality.
will seek money for research and production and offer to others.

[Million]

It was possible not to write "Western developers." Not in Russia.