Cu-Pb Nanocomposite Cathode Material toward Room-Temperature Cycling for All-Solid-State Fluoride-Ion Batteries

Datong Zhang, Takahiro Yoshinari, Kentaro Yamamoto, Yuya Kitaguchi, Aika Ochi, Koji Nakanishi, Hidenori Miki, Shinji Nakanishi, Hideki Iba, Toshiki Watanabe, Tomoki Uchiyama, Yuki Orikasa, Koji Amezawa, Yoshiharu Uchimoto

Research output: Contribution to journalArticlepeer-review

Abstract

All-solid-state fluoride-ion batteries (FIBs) are regarded as attractive alternatives to traditional energy storage systems because of their high energy density; however, they are not applicable at room temperature owing to sluggish ion transport in both the electrolyte and electrode. In this study, a rational design of a Cu-Pb nanocomposite is reported, which was tested as a room-Temperature cathode material for all-solid-state FIBs. Following electrochemical pretreatment, self-generated PbF2 could act as a fast fluoride-ion conductor and consequently enhance the kinetics of the Cu/CuF2 phase transition process upon cycling. The detailed reaction mechanism and phase transition process were verified using the X-ray absorption near edge structure. The Cu-Pb nanocomposite could realize reversible (de)fluorination at room temperature with high performance and good cyclability.

Original languageEnglish
Pages (from-to)3352-3357
Number of pages6
JournalACS Applied Energy Materials
Volume4
Issue number4
DOIs
Publication statusPublished - 2021 Apr 26

Keywords

  • XANES
  • all-solid-state
  • cathode
  • fluoride-ion batteries
  • nanocomposite

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Energy Engineering and Power Technology
  • Electrochemistry
  • Electrical and Electronic Engineering
  • Materials Chemistry

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