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Porous carbon anodes from fluorinated polyimide for lithium-ion batteries

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2024, 34(3), pp.1039~1044
  • DOI : 10.1007/s42823-023-00657-2
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : September 12, 2023
  • Accepted : December 15, 2023
  • Published : April 11, 2024

Kim Eun Seo 1 Park Hyeongmin 1 KIM, SUNG-KON ORD ID 2

1전북대학교 화학공학부
2전북대학교

Accredited

ABSTRACT

This study prepares highly porous carbon (c-fPI) for lithium-ion battery anode that starts from the synthesis of fluorinated polyimide (fPI) via a step polymerization, followed by carbonization. During the carbonization of fPI, the decomposition of fPI releases gases which are particularly from fluorine-containing moiety (–CF3) of fPI, creating well-defined microporous structure with small graphitic regions and a high specific surface area of 934.35 m2 g−1. In particular, the graphitic region of c-fPI enables lithiation–delithiation processes and the high surface area can accommodate charges at electrolyte/electrode interface during charge–discharge, both of which contribute electrochemical performances. As a result, c-fPI shows high specific capacity of 248 mAh g−1 at 25 mA g−1, good rate-retention performance, and considerable cycle stability for at least 300 charge–discharge cycles. The concept of using a polymeric precursor (fPI), capable of forming considerable pores during carbonization is suitable for the use in various applications, particularly in energy storage systems, advancing materials science and energy technologies.

Citation status

Scopus Citation Counts (2) This is the result of checking the information with the same ISSN, publication year, volume, and start page between articles in KCI and the SCOPUS journals. (as of 2025-01-01)

* References for papers published after 2023 are currently being built.

This paper was written with support from the National Research Foundation of Korea.