TY  - JOUR
AU  - Shaji, Ishamol
AU  - Diddens, Diddo
AU  - Ehteshami, Niloofar
AU  - Winter, Martin
AU  - Nair, Jijeesh Ravi
TI  - Multisalt chemistry in ion transport and interface of lithium metal polymer batteries
JO  - Energy storage materials
VL  - 44
SN  - 2405-8297
CY  - Amsterdam
PB  - Elsevier
M1  - FZJ-2021-04183
SP  - 263 - 277
PY  - 2022
AB  - Solvent-free solid-state polymer electrolytes (SPE) that go beyond the barriers like intrinsic low ionic conductivity, slow ion dynamics, and unstable electrode-electrolyte interphase will be fundamental for realizing the next generation of safe and high-performance lithium metal batteries. Hereby, cross-linked solid polymer electrolyte (XSPE) networks based on multisalt chemistry are synthesized using photopolymerization reaction, which outshine the conventional single salt-based XSPEs. By introducing the multisalt chemistry, an enhanced Li+ ion transport (ionic conductivity and short residence time) via anion mediated transfer (AMT) and improved interfacial characteristics (e.g., stable Li|electrolyte interphase, smooth Li-deposition) are demonstrated. Furthermore, a three-times increase in Li+ ion transference number and nearly one order of magnitude increment in diffusion coefficient are achieved. Using theoretical calculations, we propose an AMT-based ion conduction pathway in multisalt-based XSPEs. Besides, the superior electrochemical performance of multisalt-based XSPEs compared to single salt-based polymer electrolytes in Li-metal polymer batteries (LMPB) using C-LiFePO4 and LiNi0.8Co0.15Al0.05O2 cathodes are successfully demonstrated.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000718172000007
DO  - DOI:10.1016/j.ensm.2021.10.017
UR  - https://juser.fz-juelich.de/record/902326
ER  -