TY - JOUR
T1 - Enhanced Lithium-Ion Conductivity of Polymer Electrolytes by Selective Introduction of Hydrogen into the Anion
AU - Zhang, Heng
AU - Oteo, Uxue
AU - Zhu, Haijin
AU - Judez, Xabier
AU - Martinez-Ibañez, Maria
AU - Aldalur, Itziar
AU - Sanchez-Diez, Eduardo
AU - Li, Chunmei
AU - Carrasco, Javier
AU - Forsyth, Maria
AU - Armand, Michel
N1 - Publisher Copyright:
© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2019/6/3
Y1 - 2019/6/3
N2 - The anion chemistry of lithium salts plays a pivotal role in dictating the physicochemical and electrochemical performance of solid polymer electrolytes (SPEs), thus affecting the cyclability of all-solid-state lithium metal batteries (ASSLMBs). The bis(trifluoromethanesulfonyl)imide anion (TFSI−) has long been studied as the most promising candidate for SPEs; however, the Li-ion conductivities of the TFSI-based SPEs still remain low (Li-ion transference number: ca. 0.2). In this work, we report new hydrogen-containing anions, conceived based on theoretical considerations, as an electrolyte salt for SPEs. SPEs comprising hydrogen-containing anions achieve higher Li-ion conductivities than TFSI-based ones, and those anions are electrochemically stable for various kinds of ASSLMBs (Li–LiFePO4, Li–S, and Li–O2 batteries). This opens up a new avenue for designing safe and high-performance ASSLMBs in the future.
AB - The anion chemistry of lithium salts plays a pivotal role in dictating the physicochemical and electrochemical performance of solid polymer electrolytes (SPEs), thus affecting the cyclability of all-solid-state lithium metal batteries (ASSLMBs). The bis(trifluoromethanesulfonyl)imide anion (TFSI−) has long been studied as the most promising candidate for SPEs; however, the Li-ion conductivities of the TFSI-based SPEs still remain low (Li-ion transference number: ca. 0.2). In this work, we report new hydrogen-containing anions, conceived based on theoretical considerations, as an electrolyte salt for SPEs. SPEs comprising hydrogen-containing anions achieve higher Li-ion conductivities than TFSI-based ones, and those anions are electrochemically stable for various kinds of ASSLMBs (Li–LiFePO4, Li–S, and Li–O2 batteries). This opens up a new avenue for designing safe and high-performance ASSLMBs in the future.
KW - Li-ion conductivity
KW - batteries
KW - electrolytes
KW - hydrogen-containing anions
KW - sulfonimide
UR - http://www.scopus.com/inward/record.url?scp=85061304477&partnerID=8YFLogxK
U2 - 10.1002/anie.201813700
DO - 10.1002/anie.201813700
M3 - 文章
C2 - 30652396
AN - SCOPUS:85061304477
SN - 1433-7851
VL - 58
SP - 7829
EP - 7834
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
IS - 23
ER -