水热法合成锌空气电池氧还原二氧化锰催化剂

doi:10.3724/SP.J.1077.2012.12474

无机材料学报 ›› 2013, Vol. 28 ›› Issue (3): 341-346.DOI: 10.3724/SP.J.1077.2012.12474 CSTR: 32189.14.SP.J.1077.2012.12474

• 研究快报 • 上一篇

水热法合成锌空气电池氧还原二氧化锰催化剂

黄幼菊¹, 李伟善^1,2,3

(华南师范大学 1. 化学和环境学院; 2. 广东高校电化学储能与发电技术重点实验室; 3. 教育部电化学储能材料与技术工程研究中心, 广州510006)

收稿日期:2012-08-07 修回日期:2012-10-30 出版日期:2013-03-20 网络出版日期:2013-02-20
作者简介:黄幼菊. E-mail: youjuhuang@163.com
基金资助:
National Natural Science Foundation of China (20873046); Natural Science Foundation of Guangdong Province (10351063101000001)

Preparation of Manganese Dioxide for Oxygen Reduction in Zinc Air Battery by Hydro thermal Method

HUANG You-Ju¹, LI Wei-Shan^1,2,3

(1. School of Chemistry and Environment, South China Normal University, Guangzhou 510006, China; 2. Key Laboratory of Electrochemical Technology on Energy Storage and Power Generation of Guangdong Higher Education Institutes, South China Normal University, Guangzhou 510006, China; 3. Engineering Research Center of Materials and Technology for Electrochemical Energy Storage (Ministry of Education), South China Normal University, Guangzhou 510006, China)

Received:2012-08-07 Revised:2012-10-30 Published:2013-03-20 Online:2013-02-20
About author:HUANG You-Ju (1980–), female, candidate of PhD. E-mail: youjuhuang@163.com
Supported by:
National Natural Science Foundation of China (20873046); Natural Science Foundation of Guangdong Province (10351063101000001)

摘要/Abstract

摘要： 在180℃下通过改变K⁺与H⁺摩尔比使用水热法分别制备了δ-MnO₂, α-MnO₂和β-MnO₂ 纳米颗粒, K⁺与H⁺摩尔比分别为3.4、0.85和0.24。所合成的样品通过扫描电子显微镜(SEM), 粉末X射线衍射(XRD), 傅里叶变换红外光谱(FTIR), BET比表面分析, 热重分析(TG)和电化学方法表征。结果表明: K⁺与H⁺的浓度对产品的晶型、形貌以及比表面积有很大影响; 将这三种材料作为锌空电池的阴极材料时, δ-MnO₂与α-MnO₂的电化学性能明显优于β-MnO₂. 在–0.35 V下, δ-MnO₂、α-MnO₂和β-MnO₂的氧还原电流分别为56.28、56.01和40.88 mA/cm²。

关键词: 氧还原, 二氧化锰, 水热方法, 锌空电池

Abstract: δ-MnO₂, α-MnO₂ and β-MnO₂ nano-particles were obtained by a hydrothermal method with changing molar ratios of K⁺/H⁺ at low temperature of 180℃, and the molar ratios of K⁺/H⁺were 3.4, 0.85 and 0.24, respectively. The as-prepared samples were characterized by SEM, XRD, FTIR, BET, TG and electrochemical method. The results indicate that the concentrations of K⁺ ion and H⁺ ion have great effects on the crystalline structures, morphology and specific surface area of the as-prepared products. Among the three as-prepared samples used as cathodic materials in zinc air battery, the rate performances of the δ-MnO₂ and α-MnO₂are superior to that of the as-prepared β-MnO₂. The oxygen reduction currents of δ-MnO₂, α-MnO₂, and β-MnO₂ at –0.35 V are 56.28, 56.01 and 40.88 mA/cm², respectively.

Key words: oxygen reduction, manganese dioxide, hydro thermal method, zinc air battery

中图分类号:

黄幼菊, 李伟善. 水热法合成锌空气电池氧还原二氧化锰催化剂[J]. 无机材料学报, 2013, 28(3): 341-346.

HUANG You-Ju, LI Wei-Shan. Preparation of Manganese Dioxide for Oxygen Reduction in Zinc Air Battery by Hydro thermal Method[J]. Journal of Inorganic Materials, 2013, 28(3): 341-346.

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水热法合成锌空气电池氧还原二氧化锰催化剂

Preparation of Manganese Dioxide for Oxygen Reduction in Zinc Air Battery by Hydro thermal Method

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