Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 14, Issue 49, Pages 54369-54388Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.2c08690
Keywords
layered transition metal compounds; interlayer spacing; intercalation; doping; diffusion barrier; activation energy
Funding
- International S&T Cooperation Program of China
- National Key R&D Program of China
- [2018YFE0181300]
- [2020YFB2007400]
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This review focuses on the importance of interlayer modulation in layered transition metal compounds for high-performance electrochemical energy storage devices. Interlayer modulation can effectively improve the overall electrochemical performance by addressing issues such as sluggish kinetics, structural distortion, irreversible phase transition, dissolution of transition metal elements, and air instability. The article discusses the merits of interlayer modulation on charge storage procedures and summarizes the state-of-the-art strategies of intercalation and doping with foreign species. The applications of modified layered electrode materials in various energy storage devices are also highlighted.
Layered transition metal compounds are one of the most important electrode materials for high-performance electrochemical energy storage devices, such as batteries and supercapacitors. Charge storage in these materials can be achieved via intercalation of ions into the interlayer channels between the layer slabs. With the development of lithium-beyond batteries, larger carrier ions require optimized interlayer space for the unrestricted diffusion in the two-dimensional channels and effectively shielded electrostatic interaction between the slabs and interlayer ions. Therefore, interlayer modulation has become an efficient and promising approach to overcome the problems of sluggish kinetics, structural distortion, irreversible phase transition, dissolution of some transition metal elements, and air instability faced by these materials and thus enhance the overall electrochemical performance. In this review, we focus on the interlayer modulation of layered transition metal compounds for various batteries and supercapacitors. Merits of interlayer modulation on the charge storage procedures of charge transfer, ion diffusion, and structural transformation are first discussed, with emphasis on the state-of-art strategies of intercalation and doping with foreign species. Following the obtained insights, applications of modified layered electrode materials in various batteries and supercapacitors are summarized, which may guide the future development of high-performance and low-cost electrode materials for energy storage.
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