MnO2/MCMB electrocatalyst for all solid-state alkaline zinc-air cells

被引：38

作者：

Zhang, GQ ^{[1
]}

Zhang, XG ^{[1
]}

机构：

[1] Xinjiang Univ, Inst Appl Chem, Urumqi 830046, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2004年 / 49卷 / 06期

基金：

中国国家自然科学基金;

关键词：

MnO2/MCMB composite; zinc-air cell; electrocatalyst;

D O I：

10.1016/j.electacta.2003.09.039

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Nanostructured MnO2/mesocarbon microbeads (MCMB) composite has been prepared successfully for use in zinc-air cell as electrocatalyst for oxygen reaction. The scanning electron microscope (SEM) images showed that the MnO2 nanorods were formed and covered on the surface of MCMB in bird's nest morphology. X-ray diffraction (XRD) pattern indicated that the MnO2 has the hollandite structure with a composition approximating KMn8O16. By the cathodic polarization curve tests, the nanostructured material demonstrated excellent electrocatalytic activity as a kind of oxygen electrode electrocatalyst compared with electrolytic MnO2. An all solid-state zinc-air cell has been fabricated with this material as electrocatalyst for oxygen electrode and potassium salt of cross-linked poly(acrylic acid) as an alkaline polymer gel electrolyte. The cell has good discharge characteristics at room temperature. (C) 2003 Published by Elsevier Ltd.

引用

页码：873 / 877

页数：5

共 28 条

[1] Characterisation of mesocarbon microbeads (MCMB) as active electrode material in lithium and sodium cells [J].

Alcántara, R ;

Madrigal, FJF ;

Lavela, P ;

Tirado, JL ;

Mateos, JMJ ;

de Salazar, CG ;

Stoyanova, R ;

Zhecheva, E .

CARBON, 2000, 38 (07) :1031-1041

[2]

BREBET JP, 1979, J POWER SOURCES, V4, P183

[3] Kinetics of oxygen reduction at oxide-derived Pd electrodes in alkaline solution [J].

Chang, CC ;

Wen, TC ;

Tien, HJ .

ELECTROCHIMICA ACTA, 1997, 42 (04) :557-565

[4] Electrocatalytic four-electron reduction of oxygen to water by a highly flexible cofacial cobalt bisporphyrin [J].

Chang, CJ ;

Deng, YQ ;

Shi, CN ;

Chang, CK ;

Anson, FC ;

Nocera, DG .

CHEMICAL COMMUNICATIONS, 2000, (15) :1355-1356

[5] Catalysis of the electroreduction of O2 by cobalt 5,10,15,20-tetraphenylporphyrin dissolved in thin layers of benzonitrile on graphite electrodes [J].

Chung, TD ;

Anson, FC .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2001, 508 (1-2) :115-122

[6] ALKALI-METAL IONS INSERTION/EXTRACTION REACTIONS WITH HOLLANDITE-TYPE MANGANESE OXIDE IN THE AQUEOUS-PHASE [J].

FENG, Q ;

KANOH, H ;

MIYAI, Y ;

OOI, K .

CHEMISTRY OF MATERIALS, 1995, 7 (01) :148-153

[7]

Gautier JL, 1997, EUR J SOL STATE INOR, V34, P367

[8] MESOPHASE PITCH AND MESO-CARBON MICROBEADS [J].

HONDA, H .

MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1983, 94 (1-2) :97-108

[9]

Honda H., 1973, J JPN PETROL INST, V16, P392

[10] Nickel/metal hydride cells using an alkaline polymer gel electrolyte based on potassium salt of crosslinked poly(acrylic acid) [J].

Iwakura, C ;

Furukawa, N ;

Ohnishi, T ;

Sakamoto, K ;

Nohara, S ;

Inoue, H .

ELECTROCHEMISTRY, 2001, 69 (09) :659-663

← 1 2 3 →