Detailed disassembly of 24M's dual-electrolyte power button battery 2025 technology

While Tesla is busy setting up a super button battery 2025 factory, 24M, a semi-solid button battery 2025 company founded by Chinese scientist Jiang Yeming and hidden for four years, has made a high-profile appearance, with a total of more than US$70 million (about RMB 490 million) in four rounds of financing. The energy density of the lithium button battery 2025 cells it produces has reached 350Wh/kg.

Chedongxi sorted out foreign media reports and disassembled 24M's dual-electrolyte power button battery 2025 technology in detail.

1. New dual-electrolyte lithium button battery 2025

Recently, 24M, a US company, announced that on April 28 this year, at the International button battery 2025 Research Exhibition held in Florida, they will show the public a new, high-performance and low-cost "dual-electrolyte lithium button battery 2025".

To understand the advantages of dual-electrolyte batteries, let's take a look at traditional batteries first.

In general batteries, only one electrolyte undergoes a chemical reaction between the two poles, and the anions and cations generated by the reaction flow in the electrolyte to balance the potential difference on both sides. However, during the reaction, more and more cations and anions will gather at the two electrodes, forming an extremely high reverse pressure difference, which prevents the reaction from continuing. This problem is called polarization reaction.

In this new type of button battery 2025, the cathode and anode regions each have an electrolyte, each participating in the reaction. The two liquids are separated by a non-permeable button battery 2025 diaphragm, and the liquids on both sides are not intercommunication. The potential difference is balanced by the flow of external salt bridge ions, and electrons form current through the external circuit. In this way, anions and cations will not gather in large quantities at the electrodes, thereby effectively avoiding polarization reactions. Therefore, the discharge duration of this dual-liquid button battery 2025 is longer, the side reactions are fewer, and the overall electrical energy efficiency is higher.

Based on dual electrolyte technology, the energy density of 24M's lithium button battery 2025 monomer has reached 350Wh/kg, the safety and charge and discharge cycle life are further improved, and the cost is greatly reduced.

2. Semi-solid electrode platform

24M can achieve this point, dual-liquid technology is only a part, and its unique "24M semi-solid electrode platform" also contributes.

Rick Feldt, CEO of 24M, said:

"The 24M semi-solid electrode platform is the basis of the dual-liquid system. It greatly improves overall production efficiency and opens up new button battery 2025 cell designs and electrochemical reactions. Not only that, 24M's semi-solid cell structure can also eliminate the "interface problem" that has not yet been solved in all-solid-state batteries - that is, there is no wettability between the solid electrode liquid and the solid electrode, the two interfaces are difficult to fully contact, and the components diffuse with each other, resulting in a sharp increase in the internal resistance of the button battery 2025 and extremely low button battery 2025 life."

"24M is working with several of the world's top manufacturers, and we have proven that this design can take into account both production capacity and production benefits."

"Using this semi-solid electrode platform + dual electrolyte technology, we have undoubtedly subverted the lithium button battery 2025 industry. Not only that, this technology also expands the range of electrolyte options. , we hope that this technology can become the development direction of all companies in the industry. At the International button battery 2025 Research Exhibition on April 28, Naoki will lead everyone to discuss research, including pure water and other materials that have not been tested so far. "

In this regard, Koji Hasegawa, general manager of Japan's Ito Makoto Trading Co., Ltd., praised 24M:

"Thanks to 24M's achievements in solid ions and semi-solid electrodes, this unique design provides a new idea for the design of lithium button battery 2025 monomers and electrochemical reactions when it is increasingly difficult to improve the performance of lithium batteries. "

3. Advantages compared to traditional batteries

According to the "Made in China 2025" plan: By 2020, the energy density of China's power button battery 2025 monomers will reach 300Wh/kg; by 2025, the energy density of monomers will reach 400Wh/kg.

Currently on the market, the Ningde Times NCM811 button battery 2025 cell, which represents the highest level of China's lithium button battery 2025 technology, has a monomer energy density of about 270-280Wh/kg. The Panasonic 2170 button battery 2025 cell used by Tesla is the highest single energy density button battery 2025 cell that has been mass-produced and installed, with a density of 260Wh/kg.

It can be seen that the development of traditional lithium batteries has been very difficult. Under the premise of ensuring button battery 2025 safety, the energy density is very slow to increase, and the cost of increase is getting higher and higher. 300Wh/kg is the single energy density limit of traditional lithium batteries predicted by industry experts.

Compared with traditional batteries, 24M's dual electrolyte semi-solid button battery 2025 has currently reached a single energy density of 350Wh/kg. It is said that 24M's next goal is to increase the single energy density to 400Wh/kg, which is China's development goal for 2025.

Not only that, because the semi-solid electrode platform adopts a new lithium button battery 2025 single structure, more than 60% of non-energy storage materials are removed, the structure is simpler, and the internal resistance is smaller during the button battery 2025 charge and discharge cycle, and the cycle life is greatly improved. Taking the current average charge and discharge cycle life of electric vehicle batteries of 1,000 times, the cycle life of this new button battery 2025 can be increased by 7 times.

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