Recent progress on hollow array architectures and their applications in electrochemical energy storage

Chenyu Zhu, Huanwen Wang, Cao Guan

Research output: Contribution to journalReview articlepeer-review

50 Scopus citations

Abstract

The structural design of electrode materials is one of the most important factors that determines the electrochemical performance of energy storage devices. In recent years, hollow micro-/nanoarray structures have been widely explored for energy applications due to their unique structural advantages. Their complex hollow interior and shell arrays enable fast ion diffusion/transport, provide abundant active sites and accommodate volume changes. Moreover, the direct contact of hollow arrays with substrates enhances the mechanical stability during long-term cycling. To date, huge progress has been achieved in the rational design of various hollow array architectures. However, a review on this topic has been rarely reported. Herein, the multifunctional merits and typical synthetic strategies for hollow array structures are analyzed in detail. Furthermore, their applications in electrochemical energy storage (such as supercapacitors and batteries) are summarized. The development and challenges of hollow arrays in terms of substrates, technique improvement and material innovation are discussed. Finally, their applications for energy storage and conversion are prospected.

Original languageEnglish
Pages (from-to)1188-1199
Number of pages12
JournalNanoscale Horizons
Volume5
Issue number8
DOIs
StatePublished - Aug 2020

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