TY - JOUR
T1 - Lithium Argyrodite as Solid Electrolyte and Cathode Precursor for Solid-State Batteries with Long Cycle Life
AU - Wang, Shuo
AU - Tang, Mingxue
AU - Zhang, Qinghua
AU - Li, Baohua
AU - Ohno, Saneyuki
AU - Walther, Felix
AU - Pan, Ruijun
AU - Xu, Xiaofu
AU - Xin, Chengzhou
AU - Zhang, Wenbo
AU - Li, Liangliang
AU - Shen, Yang
AU - Richter, Felix H.
AU - Janek, Jürgen
AU - Nan, Ce Wen
N1 - Funding Information:
This work was supported by the Basic Science Center Program of National Natural Science Foundation of China (NSFC) under Grant No. 51788104 and NSFC projects under Grant Nos. 51625202, 51872157, and 21974007. J.J. and F.H.R. acknowledge the financial support from the project 03XP0177A funded by Bundesministerium für Bildung und Forschung (BMBF) within the cluster of competence FESTBATT. S.W. acknowledges the financial support by China Scholarship Council. The authors thank Yuan Liu at Qingdao University for drawing the schematic illustration of the LPSCB‐MWCNTs composite electrode, Jing Li at TESCAN CHINA conducting the FIB‐SEM measurements, and Xiaorui Hao at Tsinghua University for conducting some XPS measurements.
Funding Information:
This work was supported by the Basic Science Center Program of National Natural Science Foundation of China (NSFC) under Grant No. 51788104 and NSFC projects under Grant Nos. 51625202, 51872157, and 21974007. J.J. and F.H.R. acknowledge the financial support from the project 03XP0177A funded by Bundesministerium f?r Bildung und Forschung (BMBF) within the cluster of competence FESTBATT. S.W. acknowledges the financial support by China Scholarship Council. The authors thank Yuan Liu at Qingdao University for drawing the schematic illustration of the LPSCB-MWCNTs composite electrode, Jing Li at TESCAN CHINA conducting the FIB-SEM measurements, and Xiaorui Hao at Tsinghua University for conducting some XPS measurements. Open access funding enabled and organized by Projekt DEAL.
Publisher Copyright:
© 2021 The Authors. Advanced Energy Materials published by Wiley-VCH GmbH
PY - 2021/8/19
Y1 - 2021/8/19
N2 - All-solid-state batteries with conversion-type cathodes promise to exceed the performance of lithium-ion batteries due to their high theoretical specific energy and potential safety. However, the reported performance of solid-state batteries is still unsatisfactory due to poor electronic and ionic conduction in the composite cathodes. Here, in situ formation of active material as well as highly effective ion- and electron-conducting paths via electrochemical decomposition of Li6PS5Cl0.5Br0.5 (LPSCB)/multiwalled carbon nanotube mixtures during cycling is reported. Effectively, the LPSCB electrolyte forms a multiphase conversion-type cathode by partial decomposition during the first discharge. Comprehensive characterization, especially operando pressure monitoring, reveals a co-redox process of two redox-active elements during cycling. The monolithic LPSCB-based cell shows stable cycling over 1000 cycles with a very high capacity retention of 94% at high current density (0.885 mA cm−2, ≈0.7 C) at room temperature and a high areal capacity of 12.56 mAh cm−2 is achieved.
AB - All-solid-state batteries with conversion-type cathodes promise to exceed the performance of lithium-ion batteries due to their high theoretical specific energy and potential safety. However, the reported performance of solid-state batteries is still unsatisfactory due to poor electronic and ionic conduction in the composite cathodes. Here, in situ formation of active material as well as highly effective ion- and electron-conducting paths via electrochemical decomposition of Li6PS5Cl0.5Br0.5 (LPSCB)/multiwalled carbon nanotube mixtures during cycling is reported. Effectively, the LPSCB electrolyte forms a multiphase conversion-type cathode by partial decomposition during the first discharge. Comprehensive characterization, especially operando pressure monitoring, reveals a co-redox process of two redox-active elements during cycling. The monolithic LPSCB-based cell shows stable cycling over 1000 cycles with a very high capacity retention of 94% at high current density (0.885 mA cm−2, ≈0.7 C) at room temperature and a high areal capacity of 12.56 mAh cm−2 is achieved.
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U2 - 10.1002/aenm.202101370
DO - 10.1002/aenm.202101370
M3 - Article
AN - SCOPUS:85109271873
SN - 1614-6832
VL - 11
JO - Advanced Energy Materials
JF - Advanced Energy Materials
IS - 31
M1 - 2101370
ER -
