TY  - JOUR
PY  - 2022//
TI  - Lithium bromide-induced organic-rich cathode/electrolyte interphase for high-voltage and flame-retardant all-solid-state lithium batteries
JO  - ACS applied materials and interfaces
A1  - Zhou, Hang-Yu
A1  - Yan, Shuai-Shuai
A1  - Li, Jun
A1  - Dong, Hao
A1  - Zhou, Pan
A1  - Wan, Lei
A1  - Chen, Xiao-Xia
A1  - Zhang, Wei-Li
A1  - Xia, Ying-Chun
A1  - Wang, Pei-Can
A1  - Wang, Bao-Guo
A1  - Liu, Kai
SP  - ePub
EP  - ePub
VL  - ePub
IS  - ePub
N2  - Poly(ethylene oxide) (PEO)-based solid electrolyte suffers from limited anodic stability and an intrinsic flammable issue, hindering the achievement of high energy density and safe all-solid-state lithium batteries. Herein, we surprisingly found out that a bromine-rich additive, decabromodiphenyl ethane (DBDPE), could be preferably oxidized at an elevated voltage and decompose to lithium bromide at an elevated potential followed by inducing an organic-rich cathode/electrolyte interphase (CEI) on NCM811 surface, enabling both high-voltage resistance (up to 4.5 V) and flame-retardancy for the PEO-based electrolyte. On the basis of this novel solid electrolyte, all-solid-state Li/NCM811 batteries deliver an average reversible capacity of 151.4 mAh g(-1) over the first 150 cycles with high capacity retention (83.0%) and high average Coulombic efficiency (99.7%) even at a 4.5 V cutoff voltage with a unprecedented flame-retardant properties. In view of these exploration, our studies revealed the critical role of LiBr in inducing an organic-rich thin and uniform CEI passivating layer with enhanced lithium ion surface diffusion and high-voltage resistant properties, which provides a new protocol for the further design of a high-voltage PEO-based all-solid-state electrolyte.<p />  <p>Language: en</p>
LA  - en
SN  - 1944-8244
UR  - http://dx.doi.org/10.1021/acsami.2c05016
ID  - ref1
ER  -