Fe-N-C共掺杂材料的制备及其氧还原性能研究
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- 英文论文题名：Iron and Nitrogen Dual-Doped Carbon composites as Electrocatalysts for Oxygen Reduction
- 论文作者：孙洪迪 ; 王书敬 ; 魏良勤 ; 李忠涛
- 英文论文作者：Hongdi Sun ; SJ Wang ; LQ W ; ZT Li ; State Key Laboratory of Heavy Oil Processing ; China University of Petroleum (East of China)
- 年：2016
- 作者机构：中国石油大学(华东);
- 论文关键词：电催化 ; 氧还原 ; 共掺杂
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第四十二分会：能源纳米材料物理化学
- 语种：中文
- 分类号：O643.36;TM911.4
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第四十二分会 ; 能源纳米材料物理化学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：145k
- 原文格式：D
- 会议级别：全国
摘要
氧还原催化剂是决定燃料电池和金属空气电池性能的关键因素。采用一步溶剂热法,以4,5-二氰基咪唑和FeAc_2为原料合成Fe-N-C共掺杂材料并研究了其氧还原电催化性能。通过X射线粉末衍(XRD)、拉曼光谱(Raman)、扫描电镜(SEM)、热重(TG)等分析测试手段表征了其组成及形貌。采用伏安曲线和旋转圆盘电极技术测试了所制备复合材料的电化学性能。结果表明,所制备的材料具有较高的起始电压、电流密度和电子转移数,且相同条件下可超过Pt/C的性能。在-0.8 V vs Ag/AgCl下,电流密度可达到-6.5 mA cm~(-2),是一种有潜力的燃料电池阴极材料。
The electrochemical oxygen reduction(ORR) catalyst is an important factor for the performance of fuel cell and metal-air batteries. Here an one-pot solvothermal strategy is developed to fabricate iron and nitrogen dual-doped carbon composites(Fe-N-C) by using 4,5-dicyanoimidazole and ferrous acetate as precursors. The as-prepared Fe-N-C shows outstanding catalytic activity toward ORR with a current density of-6.5 mA cm~(-2) at a potential of-0.8 V vs Ag/AgCl, which is comparable to commercial Pt/C catalyst.
The electrochemical oxygen reduction(ORR) catalyst is an important factor for the performance of fuel cell and metal-air batteries. Here an one-pot solvothermal strategy is developed to fabricate iron and nitrogen dual-doped carbon composites(Fe-N-C) by using 4,5-dicyanoimidazole and ferrous acetate as precursors. The as-prepared Fe-N-C shows outstanding catalytic activity toward ORR with a current density of-6.5 mA cm~(-2) at a potential of-0.8 V vs Ag/AgCl, which is comparable to commercial Pt/C catalyst.
引文
[1]Chua,C.;Pumera,M.ACS nano.2015,9(4):4193.
[2]Zhang,S.;Zhang,H.;Liu,Q.J.Mater.Chem.A.2013,1(10):3302.
[2]Zhang,S.;Zhang,H.;Liu,Q.J.Mater.Chem.A.2013,1(10):3302.