MnO<sub>2</sub>在超级电容器电极材料中的研究进展

孙翔; 罗志斌

MnO₂在超级电容器电极材料中的研究进展

孙翔,
罗志斌

中国能源建设集团广东省电力设计研究院有限公司, 广东广州 510663

详细信息

作者简介:
孙翔,男,1988年生,硕士,工程师,主要从事电力设计、能源咨询、氢能和储能等技术研究。

中图分类号: TB332
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- 被引次数: 0
出版历程
- 收稿日期: 2022-03-23
- 网络出版日期: 2022-09-13

Research Progress of MnO₂ as Supercapacitor Electrode Materials

Guangdong Electric Power Design Institute Co., Ltd., China Energy Group Engineering Group, Guangzhou 510663, China

摘要

摘要: 超级电容器因其超快速的充放电速度而在众多储能器件中占据不可替代的地位。此外,它还具有循环寿命长、维护简单、安全环保、成本低等诸多优势。以各类碳基材料为代表的超级电容器的比电容通常较低,难以满足社会发展对高能的需求。以各类金属化合物为代表的赝电容器可通过快速的法拉第反应存储更多的能量,因而受到现代社会的青睐。其中,MnO₂是最早被提出来的一类传统赝电容器电极材料,其晶相结构丰富,具有可供电解液离子快速进出的隧道结构,理论比容量高,但其存在电子电导率低、循环稳定性差等问题。作者选择了最具代表性的两类MnO₂材料——α相和δ相MnO₂,介绍了这两种晶相的储能机理和研究现状,重点介绍目前针对其存在的问题而普遍采用的解决方案,并对MnO₂的规模应用提出展望。
- MnO₂ /
- 超级电容器 /
- 金属化合物 /
- 电极材料
Abstract: The supercapacitor occupies an irreplaceable position in the field of energy storage devices due to its ultra fast charge/discharge speed. In addition, it also has many other advantages, such as long cycle life, easy maintenance, high safety and environmental protection, and low cost. The specific capacitance of supercapacitors represented by carbon based materials is usually low, which is difficult to meet the demand for high energy. Pseudocapacitors represented by various metal compounds are favored by modern society for they can store more energy through rapid Faraday reaction. Among which, MnO₂ is one of the traditional pseudocapacitor electrode materials first proposed.It has rich crystal phase structures, and some of the structures can act as tunnels for the hydrolysate ions' fast insertion/extraction. It has high theoretical specific capacity, but it has some problems, such as low electronic conductivity and poor cycle stability. Here are introduced the energy storage mechanism and research status of two representative types of MnO₂ with α phase and δ phase, introduced the commonly used solutions to their existing problems, and put the prospect of the large-scale application of MnO₂.
- MnO₂ /
- super capacitor /
- metal compounds /
- electrode material

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参考文献(51)

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