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Selective Synthesis of Manganese Oxide Nanostructures for Electrocatalytic Oxygen Reduction

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ABSTRACT
This work presents two points with respect to manganese oxide (MnOx) nanomaterials: their controllable synthesis with desired phases and shapes together with their applications as catalysts for oxygen reduction and Al/air batteries. Solid MnOx with crystalline phases of MnOOH, Mn2O3, and MnO2 as well as shapes of the sphere, wire, rod, and particle were prepared through a simple one-pot hydrothermal route. Selective preparation was achieved by adjusting the surfactant concentration that controls simultaneously the growth thermodynamic and dynamic parameters of MnOx nanocrystals. Electrochemical investigations show that
the obtained Mn2O3 nanowires, which possess a large aspect ratio and preferentially exposed (222) crystal surfaces, exhibit remarkable catalytic activity (comparable to Pt/C counterparts) toward the electroreduction of oxygen in alkaline media. The tailored MnOx nanostructures may find prospective applications as low-cost catalysts for alkaline fuel cells and metal/air batteries.

KEYWORDS: manganese oxides • nanostructures • electrocatalytic oxygen reduction • Al/air batteries

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Informasi Detail

Judul Seri

ACS Applied Materials & Interfaces

No. Panggil

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Penerbit

Washington, DC : American Chemical Society., 2009

Deskripsi Fisik

ACS Appl. Mater. Interfaces, 2009, 1 (2), 460-466

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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