Semi-solid-state batteries are about to go into mass production, so why aren’t they used in cars?

In order to improve the stability and energy density of power batteries, many companies have begun to develop solid-state batteries. Solid-state batteries use solid electrolytes and have relatively high stability, but the production cost is also high. In order to alleviate this situation, some companies have adopted a compromise approach, that is, the production of semi-solid-state batteries. And according to media reports, Japanese electronics company Kyocera announced that it will soon launch an energy storage battery built with a semi-solid-state battery architecture, but this type of battery is a residential battery and has nothing to do with cars. Semi-solid-state batteries are about to be mass-produced, so why are they not suitable for cars?

In fact, semi-solid batteries have been mentioned in the early years. Semi-solid lithium batteries refer to batteries in which any one electrode does not contain liquid electrolyte, while the other electrode contains liquid electrolyte. Compared with the current lithium-ion batteries, semi-solid batteries are relatively smaller and more stable, and can also improve energy density. In November 2016, China's Jiawei Co., Ltd. established Weilong Energy Solid-State Energy Storage Technology Rugao Co., Ltd., investing 660 million yuan to build a fast-charging lithium battery production line using semi-solid technology.

Even so, semi-solid batteries are still in the early stages of industry development, and we still don’t know whether they are suitable for use in pure electric vehicles. So although semi-solid batteries are about to be mass-produced, they will not be used in cars in the short term. However, Kyocera also revealed that if this semi-solid battery can withstand the test, it can be installed in new energy vehicles in a short period of time, thus serving as a transitional product between liquid batteries and solid-state batteries, improving the range of pure electric vehicles and the stability of power batteries.