Nexans, the school-run factory of Imperial College in the United Kingdom, recently released a silicon anode lithium battery. Due to the use of new anode materials, the capacity of this battery unit reaches 3200mAh, which is the highest capacity lithium battery on the market.
The capacity improvement is mainly due to the use of silicon materials. Compared with the current lithium-ion batteries with graphite anodes, silicon anode batteries can make the battery charge 10 times as much as the former. Of course, this improvement is theoretical, and cathode materials are also required. However, even if only the negative electrode structure is improved, the actual capacity of this kind of lithium battery is higher than that of the 2500~3100mAh lithium ion battery currently on the market.
The use of silicon to improve the performance of batteries has always been the desire of engineers. In addition to being used in the manufacture of negative electrodes, silicon can also be used in the preparation of electrolytes. Substituting low-sodium silicon salt solution for sulfuric acid solution in lead-acid batteries has obvious high-rate fast charging performance .
The so-called high-capacity performance of Nexans refers to the volume-to-capacity ratio, and the same volume of silicon anode lithium battery can hold more electricity. Further analysis, this 3200mAh high-capacity lithium battery is very likely to be the mature 18650 lithium battery currently on the market.
Because of the instability of the physical properties of silicon materials, Nexans has improved the material form of silicon. This improved silicon anode technology completely solves the problem of battery discharge instability, so that it can be quantitatively compared with the existing lithium on the market. battery for comparison.
