title: Solid-State Lithium-Sulfur Batteries Operated at 37 °C with Composites of Nanostructured Li7La3Zr2O12/Carbon Foam and Polymer.
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-1at the human body temperature 37 °C and a high capacity of 1210 and 1556 mAh g-1at 50 and 70 °C, respectively. In addition, the solid-state Li-S batteries exhibit high Coulombic efficiency and show remarkably stable cycling performance.
authors.affiliation: College of Materials Science and Engineering, Zhejiang University of Technology , Hangzhou, 310014, China.|Department of Materials Science and Engineering, Stanford University , Stanford, California 94305, United States.
authors.forename: Xinyong
authors.identifier: 0000-0002-6233-4140
authors.initials: X
authors.lastname: Tao
authors.affiliation: Department of Materials Science and Engineering, Stanford University , Stanford, California 94305, United States.
authors.forename: Yayuan
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Department of Materials Science and Engineering, Stanford University , Stanford, California 94305, United States.
authors.forename: Wei
authors.identifier: 0000-0002-6206-8321
authors.initials: W
authors.lastname: Liu
authors.affiliation: Department of Materials Science and Engineering, Stanford University , Stanford, California 94305, United States.
authors.forename: Guangmin
authors.initials: G
authors.lastname: Zhou
authors.affiliation: Department of Materials Science and Engineering, Stanford University , Stanford, California 94305, United States.
authors.forename: Jie
authors.initials: J
authors.lastname: Zhao
authors.affiliation: Department of Materials Science and Engineering, Stanford University , Stanford, California 94305, United States.
authors.forename: Dingchang
authors.initials: D
authors.lastname: Lin
authors.affiliation: Department of Materials Science and Engineering, Stanford University , Stanford, California 94305, United States.
authors.forename: Chenxi
authors.initials: C
authors.lastname: Zu
authors.affiliation: College of Materials Science and Engineering, Zhejiang University of Technology , Hangzhou, 310014, China.
authors.forename: Ouwei
authors.initials: O
authors.lastname: Sheng
authors.affiliation: College of Materials Science and Engineering, Zhejiang University of Technology , Hangzhou, 310014, China.
authors.forename: Wenkui
authors.initials: W
authors.lastname: Zhang
authors.affiliation: Department of Materials Science and Engineering, Stanford University , Stanford, California 94305, United States.
authors.forename: Hyun-Wook
authors.initials: HW
authors.lastname: Lee
authors.affiliation: Department of Materials Science and Engineering, Stanford University , Stanford, California 94305, United States.|Stanford Institute for Materials and Energy Science, SLAC National Accelerator Laboratory , Menlo Park, California 94025, United States.
authors.forename: Yi
authors.initials: Y
authors.lastname: Cui
keywords: Li7La3Zr2O12; Lithium sulfur batteries; carbon foam; nanoparticles; solid state electrolytes