Strategies and insights towards the intrinsic capacitive properties of MnO2 for supercapacitors: Challenges and perspectives

Wei Guo, Chang Yu, Shaofeng Li, Zhao Wang, Jinhe Yu, Huawei Huang, Jieshan Qiu

Research output: Contribution to journalArticlepeer-review

248 Scopus citations

Abstract

Supercapacitors have been widely viewed as one promising candidate of next-generation energy storage devices. To configure a supercapacitor with high-charge storage for practical applications, it is one of urgent issues to take up effective/universal strategies to well tailor electrode materials for desired properties and functions. As one of representative materials with intrinsic pseudocapacitive behaviors, MnO2 is attractive because of high theoretical capacitance value and large potential window. Nevertheless, a wide gap between the practical and theoretical capacitance value greatly hinders its further applications and remains a major challenge. Herein, we systematically reviewed recent advances on activating intrinsic capacitive properties of MnO2 to shorten this distance, which was classified into five branches including conductive species coupling, single/few-layers constructing, heterojunction configuring, defects engineering and metal doping. In addition, an outlook on the practical applications of MnO2 and involved potential challenges in energy storage field was discussed and highlighted. It is believed that this article can function as a momentum calling for more endeavors into development of advanced electrode materials with fasinating capacitive performance.
Original languageEnglish (US)
Pages (from-to)459-472
Number of pages14
JournalNano Energy
Volume57
DOIs
StatePublished - Mar 1 2019
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-09-21

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • General Materials Science
  • Electrical and Electronic Engineering

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