TY  - JOUR
PY  - 2023//
TI  - Coaxial electrospun tai chi-inspired lithium-ion battery separator with high performance and fireproofing capacity
JO  - ACS applied materials and interfaces
A1  - Zeng, Ziyue
A1  - Shao, Zungui
A1  - Shen, Ruimin
A1  - Li, Haonan
A1  - Jiang, Jiaxin
A1  - Wang, Xiang
A1  - Li, Wenwang
A1  - Guo, Shumin
A1  - Liu, Yifang
A1  - Zheng, Gaofeng
SP  - ePub
EP  - ePub
VL  - ePub
IS  - ePub
N2  - Organic flame-retardant-loaded battery separator offers a new opportunity for battery safety. However, its poor thermal stability still poses serious safety issues. Inspired by Tai Chi, an "internal-cultivating and external-practicing" core-shell nanofibrous membrane was prepared by coaxial electrospinning, wherein the shell layer was a mixture of polyvinylidene fluoride, silicon dioxide (SiO(2)), and graphene oxide (GO) and the core layer contained triphenyl phosphate (TPP). SiO(2) and GO enhanced the thermal stability and electrochemical performance. The encapsulated TPP prevented heat transfer and the degradation of electrochemical performance caused by its direct dissolution. This separator exhibited outstanding thermal stability and flame retardancy: it did not burn and remained relatively intact (91.2%) in an open flame for 15 s. The battery assembled with a composite separator showed excellent performance: the initial capacity reached 164 mA h/g and maintained 95% after 100 charge-discharge cycles. This novel strategy endows high-performance lithium batteries with relatively higher safety.<p />  <p>Language: en</p>
LA  - en
SN  - 1944-8244
UR  - http://dx.doi.org/10.1021/acsami.3c08757
ID  - ref1
ER  -