ACS applied materials & interfaces, publication number acsami.0c03363

Molecular Design of a Highly Stable Single-Ion Conducting Polymer Gel Electrolyte

Kewei Liu 1
Sisi Jiang 1
Trevor L Dzwiniel 2
Zhou Yu 3
Nancy L Dietz Rago 1
Jae Jin Kim 1
Jianzhong Yang 1
Qian Liu 1
James Gilbert 1
Lei Cheng 3
Chen Liao 1, 4
Publication typeJournal Article
Publication date2020-05-29
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor9.5
ISSN19448244, 19448252
General Materials Science
Abstract
Single-ion conducting polymer electrolyte with its high Li transference number (tLi+) has showed the capability in enabling high battery performance and safety by avoiding liquid electrolyte leakeage and suppressing the Li dendrite formation. However, the insufficient ionic conductivity, low electrochemical stability, and poor polymer/electrode interfacial issues greatly hindered its commecial use. Here, a Li-containing boron centered fluorinated single ion conducting (SIC) polymer gel electrolyte (LiBFSIE) was rationally designed in targeting a high tLi+ and high electrochemical stability. Owing to the low dissociation energy of the boron-center anion and Li+, the as-prepared LiBFSIE exhibited an ionic conductivity of 2 × 10-4 S/cm at 35 ºC, which is exclusively contributed by Li ions due to the high tLi+of 0.93. Both simulation and experimental approaches were applied to investigate the ion diffusion and concentration gradient in the LiBFSIE and non-cross-linked dual ion systems. Typical rectangular Li stripping/plating voltage profiles demonstrated the uniform Li deposition assisted by LiBFSIE. The interfacial contact and electrolyte infiltration were further optimized with an in-situ UV-Vis initiated polymerization method together with the electrode materials. Benefited from the high electrochemical stability of LiBFSIE, a promising average coulombic efficiency of 99.95% over 200 cycles was achieved, which is higher than that of the liquid electrolyte based cells. No obvious capacity fading was observed, indicating the long term-stability of LiBFSIE for lithium metal batteries.

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GOST Copy
Liu K. et al. Molecular Design of a Highly Stable Single-Ion Conducting Polymer Gel Electrolyte // ACS applied materials & interfaces. 2020. acsami.0c03363
GOST all authors (up to 50) Copy
Liu K., Jiang S., Dzwiniel T. L., Kim H., Yu Z., Dietz Rago N. L., Kim J. J., Fister T., Yang J., Liu Q., Gilbert J., Cheng L., Srinivasan V., Zhang Z., Liao C. Molecular Design of a Highly Stable Single-Ion Conducting Polymer Gel Electrolyte // ACS applied materials & interfaces. 2020. acsami.0c03363
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RIS Copy
TY - JOUR
DO - 10.1021/acsami.0c03363
UR - https://doi.org/10.1021/acsami.0c03363
TI - Molecular Design of a Highly Stable Single-Ion Conducting Polymer Gel Electrolyte
T2 - ACS applied materials & interfaces
AU - Dzwiniel, Trevor L
AU - Dietz Rago, Nancy L
AU - Gilbert, James
AU - Yu, Zhou
AU - Kim, Jae Jin
AU - Fister, Timothy
AU - Cheng, Lei
AU - Zhang, Zhengcheng
AU - Liao, Chen
AU - Liu, Kewei
AU - Jiang, Sisi
AU - Kim, Hong-Keun
AU - Yang, Jianzhong
AU - Liu, Qian
AU - Srinivasan, Venkat
PY - 2020
DA - 2020/05/29 00:00:00
PB - American Chemical Society (ACS)
SN - 1944-8244
SN - 1944-8252
ER -
BibTex
Cite this
BibTex Copy
@article{2020_Liu,
author = {Trevor L Dzwiniel and Nancy L Dietz Rago and James Gilbert and Zhou Yu and Jae Jin Kim and Timothy Fister and Lei Cheng and Zhengcheng Zhang and Chen Liao and Kewei Liu and Sisi Jiang and Hong-Keun Kim and Jianzhong Yang and Qian Liu and Venkat Srinivasan},
title = {Molecular Design of a Highly Stable Single-Ion Conducting Polymer Gel Electrolyte},
journal = {ACS applied materials & interfaces},
year = {2020},
publisher = {American Chemical Society (ACS)},
month = {may},
url = {https://doi.org/10.1021/acsami.0c03363},
doi = {10.1021/acsami.0c03363}
}
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