Preparation and electrochemical evaluation of La1-xSrxMnO3 cathode material for zinc air secondary batteries application

被引:8
作者
Eom, Seung Wook [1 ]
Ahn, Se Young
Lee, Chang Woo
Sun, Yang Kook [2 ]
Yun, Mun Soo
机构
[1] Korea Electrotechnol Res Inst, Battery Res Grp, POB 20, Chang Won 641600, South Korea
[2] Hanyang Univ, Dept Chem Engn, Seoul 133791, South Korea
来源
ADVANCES IN NANOMATERIALS AND PROCESSING, PTS 1 AND 2 | 2007年 / 124-126卷
关键词
zinc air battery; La1-xSrxMnO3; catalyst; cathode;
D O I
10.4028/www.scientific.net/SSP.124-126.1055
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
We prepared nano-sized La1-xSrxMnO3 (x=0.2 similar to 0.5) cathode catalyst for the zinc air secondary batteries by citrate method and measured cathode's electrochemical characteristics according to content of strontium compose the cathode catalyst. We heat treated the prepared precursor at various calcination temperature (500 similar to 900 degrees C), and examined the optimum calcinations temperature by XRD analysis and electrochemical evaluation. We examined the ORR (oxygen reduction reaction) and OER (oxygen evolution reaction) performance of the prepared La1-xSrxMnO3 catalyst powder. La0.7Sr0.3MnO3 and La0.8Sr0.2MnO3 catalyst has shown the best performance in the ORR. But in the OER, La0.7Sr0.3MnO3 catalyst has shown better performance. When we consider ORR and OER performance simultaneously, La0.7Sr0.3MnO3 catalyst has shown the best performance because of its lowest voltage difference between charge and discharge.
引用
收藏
页码:1055 / +
页数:2
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