Enabling superior electrochemical performances of Li10SnP2S12-based all-solid-state batteries using lithium halide electrolytes

Luo，Qiyue1,2; Yu，Chuang1; Wei，Chaochao1; Chen，Shuai1; Chen，Shaoqing3; Jiang，Ziling1; Peng，Linfeng1; Cheng，Shijie1; Xie，Jia1

2023-04-01

10.1016/j.ceramint.2022.11.347

CERAMICS INTERNATIONAL   Impact Factor & Quartile

0272-8842

1873-3956

LiGePS shows great potential as solid electrolytes for solid-state batteries due to its ultrahigh Li-ion conductivity. However, the high cost of Ge and the poor stability limit its applications. Replacing Ge with Sn can significantly lower the cost and maintains the high conductivity, while the corresponding LiSnPS still suffers the low interfacial stability with the bare high voltage layered oxide cathodes. Herein, LiSnPS with high Li-ion conductivity up to 4.79 mS cm has been synthesized. All-solid-state battery using the cathode consisting of bare LiNiCoMnO and LiSnPS shows low capacities and poor cyclability due to side reactions between those two particles. To improve the interfacial stability, a highly conductive LiInCl electrolyte is introduced both in the cathode mixture and between the cathode layer and LiSnPS solid electrolyte layer. This new configuration delivers superior electrochemical performances at different operating temperatures. It delivers high initial discharge capacities of 176.1 mAh g, 186.9 mAh g, and 73.7 mAh g at 0.1C when operated at room temperature, 60 C, and −20 C, respectively. The superior battery performances are attributed to the excellent electrochemical stability of LiInCl electrolyte towards bare LiNiCoMnO cathode. This work provides a guideline to design LiSnPS-based all-solid-state lithium batteries with high energy density and long span life.

All-solid-state lithium batteries Electrochemical performances Li-ion conductivity Li10SnP2S12 Li3InCl6 Stability

SCI

English

Others

National Key Research and Devel-opment Program[2021YFB2400300] ; National Natural Science Foundation of China[52177214]

Materials Science

Materials Science, Ceramics

WOS:000944736900001

ELSEVIER SCI LTD

MATERIALS SCIENCE

2-s2.0-85145991348

Scopus

1.State Key Laboratory of Advanced Electromagnetic Engineering and Technology,School of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan,430074,China
2.School of Chemistry and Chemical Engineering,Huazhong University of Science and Technology,Wuhan,430074,China
3.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China

Luo，Qiyue,Yu，Chuang,Wei，Chaochao,et al. Enabling superior electrochemical performances of Li10SnP2S12-based all-solid-state batteries using lithium halide electrolytes[J]. CERAMICS INTERNATIONAL,2023,49(7):11485-11493.

Luo，Qiyue.,Yu，Chuang.,Wei，Chaochao.,Chen，Shuai.,Chen，Shaoqing.,...&Xie，Jia.(2023).Enabling superior electrochemical performances of Li10SnP2S12-based all-solid-state batteries using lithium halide electrolytes.CERAMICS INTERNATIONAL,49(7),11485-11493.

Luo，Qiyue,et al."Enabling superior electrochemical performances of Li10SnP2S12-based all-solid-state batteries using lithium halide electrolytes".CERAMICS INTERNATIONAL 49.7(2023):11485-11493.