Promising All-Solid-State Batteries for Future Electric Vehicles

作者：Yang‐Kook Sun · 发表于：ACS Energy Letters · 年份：2020 · DOI：10.1021/acsenergylett.0c01977 · 被引用次数：268 · 研究领域：Materials Science

The global electric vehicle (EV) market has grown sharply over the past decade on the back of technological advances and supportive policies. There were about 7.2 million EVs on the world’s roads in 2019, and this number is predicted to near 140 million within the next decade. Among the various types of secondary batteries, lithium-ion batteries (LIBs) have been a key technology in the success of EVs owing to their high energy densities and long service lives. However, current LIBs are expensive, with limited ability to sufficiently deliver the performance required to advance EV development. In particular, the short driving range achievable with a single charge and long charging times are the main concerns of the broad consumer market. To achieve EV performances comparable to those of internal combustion engine vehicles, many researchers and manufacturers are devoted to developing LIBs with higher power and energy densities. However, this drive to develop more efficient and powerful LIBs has exposed the safety challenges of certain approaches. The tight packing of electrodes and their narrow separation increase the energy densities of LIBs but also increase their risk of explosion. The occasional reports of exploding or combusting LIBs in mobile phones, EVs, and energy storage systems are enough to make the average consumer nervous, possibly damaging market demand for EVs. Hence, safe LIBs are a prerequisite for the further acceleration of EV deployment. The liquid organic el...