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Author:

许林成 (许林成.) | 郝占忠 (郝占忠.) | 李钒 (李钒.) (Scholars:李钒)

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Abstract:

采用溶胶—凝胶法制备了Pr_(1-x)(La_(0.37)Ce_(0.63))_xCoO_3,利用TG-DSC、FT-IR分析前驱体的分解特性和化学键变化规律,结合XRD、SEM-EDS检测粉体微观结构、形貌以及元素分布;通过CV、LSV和RRDE技术探讨粉体在碱性溶液中氧还原ORR电催化活性。结果表明,在700℃下焙烧,x<0.4时,有La_2O_3、CeO_2杂相出现,x>0.4时钙钛矿晶体结构消失,x=0.4时得到的纯相粉体呈多孔结构。与商用Pt/C相比,Pr_(1-x)(La_(0.37)Ce_(0.63))_xCoO_3粉体质量活性(质量比电流)是其1.7倍,达到172.54mA/m...

Keyword:

催化活性 溶胶—凝胶法 Pr_(1-x)(La_(0.37)Ce_(0.63))_xCoO_3粉体 制备

Author Community:

  • [ 1 ] 包头师范学院化学学院
  • [ 2 ] 北京工业大学环境与能源工程学院

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Source :

有色金属(冶炼部分)

Year: 2019

Issue: 05

Page: 60-65

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 11

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