Conjugated Ladder-Type Polymer with Hexaazatriphenylene Units as a Cathode Material for Lithium, Sodium, and Potassium Batteries

Roman R. Kapaev, Alexander F. Shestakov, Sergey G. Vasil'Ev, Keith J. Stevenson

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

A ladder-type conjugated polymer with hexaazatriphenylene moieties is reported, and its application as a cathode material for Li-, Na-, and K-based batteries is assessed. The material demonstrates specific capacities of 170-180 mA h g-1 at 0.1 A g-1, and up to 113 mA h g-1 at 5 A g-1 (charge/discharge in ∼80 s). It also shows superior cycling stability, especially in potassium cells that show no capacity fade after 4000 cycles at 5 A g-1. Charge-discharge processes of the material are probed using operando Raman spectroscopy.

Original languageEnglish
Pages (from-to)10423-10427
Number of pages5
JournalACS Applied Energy Materials
Volume4
Issue number10
DOIs
Publication statusPublished - 25 Oct 2021

Keywords

  • cathode material
  • lithium-ion battery
  • organic material
  • potassium-ion battery
  • sodium-ion battery

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