“…A good separator must realize a tradeoff between those properties to achieve the optimal performances in the battery. Considering their vital role in high performance LIBs, tremendous efforts have been devoted on them, either on thermal stability improvement (Mohanty et al, 2016;Jiang et al, 2017;Liu et al, 2017aLiu et al, , 2018bLi et al, 2018b), or ion transport capability enhancement (low MacMullin number, N m ) (Jayaraman and Schweizer, 2009;Dahbi et al, 2012;Kirchhofer et al, 2014;Keyser et al, 2017;Ma et al, 2018). With the respect of safety performance, many works concentrated on ceramic coating (Mohanty et al, 2016;Shi et al, 2016;Jiang et al, 2017) or polymer matrix optimization (Jayaraman and Schweizer, 2009;Liu et al, 2017aLiu et al, , 2018bLi et al, 2018b).…”