Solid-State Lithium-Sulfur Batteries Operated at 37 °C with Composites of Nanostructured Li7La3Zr2O12/Carbon Foam and Polymer

Xinyong Tao; Yayuan Liu; Wei Liu; Guangmin Zhou; Jie Zhao; Dingchang Lin; Chenxi Zu; Ouwei Sheng; Wenkui Zhang; Hyun-Wook Lee; Yi Cui

doi:10.1021/acs.nanolett.7b00221

Solid-State Lithium-Sulfur Batteries Operated at 37 °C with Composites of Nanostructured Li₇La₃Zr₂O₁₂/Carbon Foam and Polymer

Nano Lett. 2017 May 10;17(5):2967-2972. doi: 10.1021/acs.nanolett.7b00221. Epub 2017 Apr 12.

Authors

Xinyong Tao^{1

2}, Yayuan Liu², Wei Liu², Guangmin Zhou², Jie Zhao², Dingchang Lin², Chenxi Zu², Ouwei Sheng¹, Wenkui Zhang¹, Hyun-Wook Lee², Yi Cui^{2

3}

Affiliations

¹ College of Materials Science and Engineering, Zhejiang University of Technology , Hangzhou, 310014, China.
² Department of Materials Science and Engineering, Stanford University , Stanford, California 94305, United States.
³ Stanford Institute for Materials and Energy Science, SLAC National Accelerator Laboratory , Menlo Park, California 94025, United States.

PMID: 28388080
DOI: 10.1021/acs.nanolett.7b00221

Abstract

An all solid-state lithium-ion battery with high energy density and high safety is a promising solution for a next-generation energy storage system. High interface resistance of the electrodes and poor ion conductivity of solid-state electrolytes are two main challenges for solid-state batteries, which require operation at elevated temperatures of 60-90 °C. Herein, we report the facile synthesis of Al³⁺/Nb⁵⁺ codoped cubic Li₇La₃Zr₂O₁₂ (LLZO) nanoparticles and LLZO nanoparticle-decorated porous carbon foam (LLZO@C) by the one-step Pechini sol-gel method. The LLZO nanoparticle-filled poly(ethylene oxide) electrolyte shows improved conductivity compared with filler-free samples. The sulfur composite cathode based on LLZO@C can deliver an attractive specific capacity of >900 mAh g^-1 at the human body temperature 37 °C and a high capacity of 1210 and 1556 mAh g^-1 at 50 and 70 °C, respectively. In addition, the solid-state Li-S batteries exhibit high Coulombic efficiency and show remarkably stable cycling performance.

Keywords: Li7La3Zr2O12; Lithium sulfur batteries; carbon foam; nanoparticles; solid state electrolytes.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.