Probing the Electrochemical Processes of Niobium Pentoxides (Nb 2 O 5 ) for High‐Rate Lithium‐ion Batteries: A Review

Jie Lin, Siyu Zhao, Rhodri Jervis*, Paul Shearing*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

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Abstract

The rising demand to electrify power-intensive energy devices and systems, as well as fast charging, has imposed a great challenge in current chemistries for lithium-ion batteries (LIBs), whose rate capabilities are predominantly restricted by the conventional graphite anode. Niobium pentoxide (Nb2O5) is a promising high-rate anode material for LIBs with extraordinary rate performance beyond 5 C and good theoretical capacity (~202 mAh ⋅ g−1). With many possible crystal structures, Nb2O5 has a complicated family of different polymorphs, each of which can possess distinct electrochemical properties, specific capacity, cycling stability, and rate capability. This special feature of Nb2O5 makes it a challenging material to understand and requires a comprehensive investigation of every one of its polymorphs. In this paper, we summarize the state-of-the-art research on Nb2O5 polymorphs for LIBs, with an emphasis on the advanced characterisation techniques that have been used to probe the electrochemical processes of Nb2O5. Key findings related to Nb2O5 that have emerged from the previous studies are highlighted, and new scientific questions that are important for its scale-up and commercialization are proposed for future research.

Original languageEnglish
Article numbere202300581
Number of pages15
JournalChemElectroChem
Volume11
Issue number6
Early online date22 Jan 2024
DOIs
Publication statusPublished - 15 Mar 2024

Bibliographical note

Publisher Copyright:
© 2024 The Authors. ChemElectroChem published by Wiley-VCH GmbH.

Keywords

  • Anode
  • Characterisation
  • Fast charging
  • Lithium-ion batteries
  • Niobium pentoxide

ASJC Scopus subject areas

  • Catalysis
  • Electrochemistry

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