物理化学学报 >> 2012, Vol. 28 >> Issue (02): 355355-360..doi: 10.3866/PKU.WHXB201111293

电化学和新能源 上一篇    下一篇

钙钛矿型La1-xCaxCoO3纳米孔材料在Al-H2O2半燃料电池中的应用

庄树新1, 刘素琴1, 张金宝1, 涂飞跃1, 黄红霞2, 黄可龙1, 李艳华1   

  1. 1. 中南大学化学化工学院, 长沙 410083;
    2. 桂林科技大学化学与生物工程学院, 广西桂林 541004
  • 收稿日期:2011-09-06 修回日期:2011-11-23 发布日期:2012-01-11
  • 通讯作者: 刘素琴 E-mail:zsxtonny@yahoo.com.cn
  • 基金资助:

    国家高技术研究发展计划(863)(2008AA031205)和中南大学博士创新基金(1343-74334000005)资助项目

Application of Nanoporous Perovskite La1-xCaxCoO3 in an Al-H2O2 Semi Fuel Cell

ZHUANG Shu-Xin1, LIU Su-Qin1, ZHANG Jin-Bao1, TU Fei-Yue1, HUANG Hong-Xia2, HUANG Ke-Long1, LI Yan-Hua1   

  1. 1. College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China;
    2. College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, Guangxi Province, P. R. China
  • Received:2011-09-06 Revised:2011-11-23 Published:2012-01-11
  • Contact: LIU Su-Qin E-mail:zsxtonny@yahoo.com.cn
  • Supported by:

    The project was supported by the National High-Tech Research and Development Program of China (863) (2008AA031205) and Graduate Degree Thesis Innovation Foundation of Central South University, China (1343-74334000005).

摘要: 通过改进的无定形柠檬酸前驱体法制备钙钛矿型La1-xCaxCoO3 (x=0.2, 0.4, 0.5)系列化合物. 使用循环伏安法和恒电流测试La1-xCaxCoO3系列化合物对于过氧化氢的电催化还原性能. 同时也检测了La1-xCaxCoO3化合物中La 与Ca的摩尔比及煅烧温度对其催化性能的影响. 在La1-xCaxCoO3系列化合物中, 650 °C煅烧的La0.6Ca0.4CoO3展现出最佳的催化活性. 在含有0.4 mol·dm-3 H2O2的3.0 mol·dm-3 KOH水溶液中, 使用这种材料作为铝-H2O2半燃料电池的阴极催化剂, 在150 mA·cm-2电流密度下该电池的电压为1.34 V, 能量密度为201 mW·cm-2.

关键词: 铝半燃料电池, 钙钛矿, 过氧化氢电还原, 碱性介质

Abstract: Perovskite-type series of compounds La1-xCaxCoO3 (x=0.2, 0.4, 0.5) were synthesized by a modified amorphous citrate precursor method. Their catalytic activities for hydrogen peroxide electroreduction in 3.0 mol·dm-3 KOH at room temperature were evaluated by cyclic voltammetry and galvanostatic measurements. The influences of annealing temperature and the molar ratio of La to Ca of La1-xCaxCoO3 on catalytic performance were investigated. Among the series of compounds, La0.6Ca0.4CoO3 calcined at 650 °C exhibited the highest catalytic activity. An aluminum-hydrogen peroxide semi fuel cell using La0.6Ca0.4CoO3 as cathode catalyst achieved a peak power density of 201 mW·cm-2 at 150 mA·cm-2 and 1.34 V running in 0.4 mol·dm-3 H2O2.

Key words: Aluminium semi fuel cell, Perovskite, Hydrogen peroxide electroreduction, Alkaline medium

MSC2000: 

  • O646