Who is the new generation of batteries?

The new energy vehicle industry looks at the flower clusters. In fact, like the mice in the teacup, it looks bright and the future is not big. The reason is that the energy density of the battery is really incomparable with the traditional power. The research power of almost all relevant industries around the world is involved in battery research. Breaking through this point, it broke through the barrier between the new energy vehicle and the traditional power car, and the remaining road was flat. Of course, the magical laws of nature will not make us so easy to succeed.

The poor electron transfer ratio in the battery determines that the battery is far less than gasoline, diesel, butane, propane, and natural gas. Of course, it is not as good as hydrogen fuel—because hydrogen itself can participate in chemical reactions. Toyota's hydrogen fuel vehicles are the perfect chemical solution from an energy density perspective. The difficulty lies in the huge and expensive infrastructure construction and the adsorption and storage medium - the gaseous hydrogen is too active and too dangerous.

The future output value of new energy vehicles is huge. Who will become a new generation of batteries?

Honda fuel cell concept car FCV concept

As a result, Toyota led its own geese, playing in the isolated world of the islands. The technological threshold of hydrogen fuel is too high, so that everyone has a little lack of confidence in the large-scale application of fuel cells in the vast mainland countries. Of course, unless Toyota can come up with a more astounding approach, it will lift everyone's wariness about fuel cell safety and cost.

Numerous clever minds and huge amounts of research funding are still invested in battery development, despite its poor energy density.

As we learned in high school chemistry, the proportion of electron transfer in most substances is very low. Only the light atoms of the first two rows of the periodic table are likely to be good energy carriers. Remove inert gas and nitrogen (similar to inert gas), and smoke the dead, leaving only hydrogen (100%), carbon (66%), boron (60%), cesium (50%), Lithium (33%) - the proportion of electrons participating in the reaction in parentheses.

The future output value of new energy vehicles is huge. Who will become a new generation of batteries?

Toyota Hydrogen Fuel Battery Concept Car - FCV Plus

It is easy to see that the most suitable energy carriers are still carbon and hydrogen. Hydrocarbons, isn't it the fuel we use for gasoline and natural gas?

For batteries that are considered for emissions, the positive and negative materials that can be used must still be found in the above circles. At the same time that poor energy density can't be lifted, we have to worry about other things.

Classic

Battery technology has been developed for more than a hundred years, and it has already passed the outbreak. We must have a realistic attitude towards the future. Supporting the molecular physics and chemistry branches of battery development, there was no major theoretical breakthrough after World War II. We have witnessed the development of rechargeable batteries from lead acid to nickel cadmium, from nickel cadmium to nickel hydrogen, and from nickel to hydrogen. There is no change in the battery structure during this period, and there will be no foreseeable future. So don't think about breaking a big news.

Most organizations or companies that study classic batteries make a fuss about positive and negative materials, electrolytes, and separators.

The future output value of new energy vehicles is huge. Who will become a new generation of batteries?

Tesla Model S with high performance lithium cobalt oxide battery

After two years of retrogression, research on cathode materials is a hot topic. In addition to the lithium cobalt oxide that Tesla is eagerly awaiting, other current hot cathode materials for lithium batteries include the ternary compound Li(Ni Co Mn)O2 and lithium iron phosphate (Li Fe PO4). However, due to compaction density, batteries using these materials do not have the same capacity as lithium cobalt oxide batteries. Why do people still have to study hard?

The future output value of new energy vehicles is huge. Who will become a new generation of batteries?

Model S battery and frame are integrated

The lithium cobalt oxide battery is good, but the volume is not large due to the problem of thermal runaway. For the same reason, in order to pursue large amounts of electricity, many lithium cobalt oxide batteries need to be stacked together. Accurate management of these small batteries seems to be a nightmare for control technology. Tesla divides them into hundreds of small units to control them separately. But too high a cost makes Tesla lack followers.

Weihong Company, which held a press conference in Beijing a few days ago, used ternary materials as the positive electrode and lithium titanate as the negative electrode, and made a unique design for the electrolyte and separator. The company's top management claims that it can not fall into thermal runaway at 300 degrees Celsius.

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