Lithiation of Copper Selenide Nanocrystals

Progna Banerjee, Prashant K. Jain

Research output: Contribution to journalArticlepeer-review

Abstract

The search for ion-conductive solid electrolytes for Li+ batteries is an important scientific and technological challenge with economic and sustainable energy implications. In this study, nanocrystals (NCs) of the ion conductor copper selenide (Cu2−ySe) were doped with Li by the process of cation exchange. Li2xCu2−2xSe alloy NCs were formed at intermediate stages of the reaction, which was followed by phase segregation into Li2Se and Cu2Se domains. Li-doped Cu2−ySe NCs and Li2Se NCs exhibit a possible SI phase at moderately elevated temperatures and warrant further ion-conductance tests. These findings may guide the design of nanostructured super-ionic electrolytes for Li+ transport.

Original languageEnglish (US)
Pages (from-to)9315-9319
Number of pages5
JournalAngewandte Chemie - International Edition
Volume57
Issue number30
DOIs
StatePublished - Jul 20 2018

Keywords

  • batteries
  • cation exchange
  • doping
  • quantum dot
  • solid electrolyte

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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