Transmission electron microscopy analysis of some transition metal compounds for energy storage and conversion

Chaolun Liang, Fuxin Wang, Wenjie Fan, Wuzong Zhou, Yexiang Tong

Research output: Contribution to journalReview articlepeer-review

7 Citations (Scopus)
2 Downloads (Pure)

Abstract

Recently, transition metal compounds (TMCs) have been employed as high-performance electrode materials for lithium ion batteries (LIBs) and supercapacitors (SCs) owing to their high specific capacities, high electrical conductivity, and high chemical and thermal stability. While the characterization of electrochemical properties of TMC anodes is well developed, new challenges arise in understanding the structure-property relationships. Transmission electron microscopy (TEM) is a powerful tool for studying microstructural characteristics. With TEM and related techniques, fundamental understanding of how the microstructures affect the properties of the TMC nanostructured anodes can be improved. In this article, the application of TEM in characterization of some typical TMC anode materials optimized through structural engineering, elemental doping, surface modification, defect-control engineering, morphological control, etc. is reviewed. Emphasis is given on analyzing the microstructures, including surface structures, various defects, local chemical compositions and valence states of transition metals, aimed at illustrating a structure-property relationship. The contribution and future development of the TEM techniques to elucidation of the electrochemical properties of the TMC anodes are highlighted.
Original languageEnglish
Pages (from-to)62-79
Number of pages18
JournalTrAC Trends in Analytical Chemistry
Volume90
Early online date2 Mar 2017
DOIs
Publication statusPublished - May 2017

Keywords

  • Transition metal compounds
  • Electrode material
  • Structural engineering
  • HRTEM
  • STEM
  • Structural-properties relationship
  • Defect structures
  • Local chemical information

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