Synthesis and electrochemical properties of two types of highly ordered mesoporous MnO2

被引：27

作者：

Li, Lianxia ^{[1
]}

Hua, Ping ^{[1
]}

Tian, Xike ^{[1
]}

Yang, Chao ^{[1
,2
]}

Pi, Zhenbang ^{[1
]}

机构：

[1] China Univ Geosci, Fac Chem Engn & Mat Sci, Wuhan 430074, Peoples R China

[2] China Univ Geosci, Sch Environm Studies, Wuhan 430074, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2010年 / 55卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Mesoporous structure; Manganese dioxide; Alkaline Zn/MnO2 battery; Electrochemical capacity; CONTROL HYDROTHERMAL SYNTHESIS; MANGANESE OXIDE; PERFORMANCE; REDUCTION; LITHIUM;

D O I：

10.1016/j.electacta.2009.10.049

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Mesoporous MnO2 with uniform nanorod morphology and mesoporous beta-MnO2 were prepared using SBA-15 and KIT-6 as the templates, respectively. XRD, nitrogen adsorption analysis, SEM, TEM and EDX techniques were used for the structural characterization. The electrochemical properties of the MnO2 samples were studied using alkaline Zn/MnO2 batteries in a 9 M KOH electrolyte solution. Compared to the commercial electrolytic manganese dioxide (EMD), the discharge capacity of the mesoporous MnO2 nanorods increased by 74.98%, 119.74% and 146.19% at constant currents of 50, 250 and 500 mA g(-1), respectively, while the discharge capacity of the mesoporous beta-MnO2 increased by 63.58%, 95.14% and 100.23%. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：1682 / 1686

页数：5

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