Synthesis and characterization of carbon black/manganese oxide air cathodes for zinc-air batteries

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Title:	Synthesis and characterization of carbon black/manganese oxide air cathodes for zinc-air batteries
Authors:	李岱洲;Li, Po-Chieh;Hu, Chi-Chang;Lee, Tai-Chou;Chang, Wen-Sheng;Wang, Tsin Hai
Contributors:	工學院化學工程與材料工程學系
Keywords:	Applied sciences;Carbon black;Catalysis;Catalysts;Cathodes;Density;Direct energy conversion and energy accumulation;Discharge;Electric power generation;Electrical conductivity;Electrical engineering. Electrical power engineering;Electrical power engineering;Electrochemical conversion: primary and secondary batteries, fuel cells;Exact sciences and technology;Materials;Zinc-oxygen batteries
Date:	2014-12-10
Issue Date:	2026-04-21 14:30:13 (UTC+8)
Publisher:	Elsevier;Amsterdam: Elsevier BV
Abstract:	摘要： Due to the poor electric conductivity but the excellent catalytic ability for the oxygen reduction reaction (ORR), manganese dioxide in the [alpha] phase (denoted as [alpha]-MnO sub(2)) anchored onto carbon black powders (XC72) has been synthesized by the reflux method. The specific surface area and electric conductivity of the composites are generally enhanced by increasing the XC72 content while the high XC72 content will induce the formation of MnOOH which shows a worse ORR catalytic ability than [alpha]-MnO sub(2). The ORR activity of such air cathodes have been optimized at the XC72/[alpha]-MnO sub(2) ratio equal to 1 determined by the thermogravimetric analysis. By using this optimized cathode under the air atmosphere, the quasi-steady-state full-cell discharge voltages are equal to 1.353 and 1.178 V at 2 and 20 mA cm super(-2), respectively. Due to the usage of ambient air rather than pure oxygen, this Zn-air battery shows a modestly high discharge peak power density (67.51 mW cm super(-2)) meanwhile the power density is equal to 47.22 mW cm super(-2) and the specific capacity is more than 750 mAh g super(-1) when this cell is operated at 1 V. 出版者： Amsterdam: Elsevier BV 出版日期： 2014-12-10 出處： Journal of Power Sources, 2014-12, Vol.269, p.88-97 資源來源： ScienceDirect 版權： 2015 INIST-CNRS 識別號： ISSN: 0378-7753 識別號： DOI: 10.1016/j.jpowsour.2014.06.108 識別號： CODEN: JPSODZ
Appears in Collections:	[Department of Chemical and Materials Engineering] journal & Dissertation

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