PtCu2八面体形貌调控及氧还原电催化性能研究

doi:10.13208/j.electrochem.180848

电化学（中英文） ›› 2018, Vol. 24 ›› Issue (6): 697-706. doi: 10.13208/j.electrochem.180848

• 庆祝衣宝廉院士八十华诞专辑 • 上一篇下一篇

PtCu₂八面体形貌调控及氧还原电催化性能研究

曹龙生^1,2, 万磊³，邵志刚^1*，俞红梅¹, 侯明¹，衣宝廉¹

1. 中国科学院大连化学物理研究所，燃料电池系统与工程研究组，大连 116023；2. 中国科学院大学北京 100049； 3. 清华大学化学工程系，北京 100084

收稿日期:2018-09-17 修回日期:2018-10-08 出版日期:2018-12-28 发布日期:2018-11-30
通讯作者: 邵志刚 E-mail:zhgshao@dicp.ac.cn
基金资助:
国家重点研发计划（No. 2018YFB0105601）、国家自然科学基金（No. 21576257）以及国家自然科学基金-辽宁省联合基金（No. U1508202）资助

Morphological Control of PtCu₂ Octahedron and Oxygen Reduction Electrocatalytic Performance of PtCu for Fuel Cell

CAO Long-sheng^1,2, WAN Lei³, SHAO Zhi-gang^1*, YU Hong-mei¹, HOU Ming¹, YI Bao-lian¹

1. Fuel Cell System and Engineering Group, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; 2. University of Chinese Academy of Sciences, Beijing 100049, China; 3. Department of Chemcial Engineering, Tsinghua University, Beijing 100084, China

Received:2018-09-17 Revised:2018-10-08 Published:2018-12-28 Online:2018-11-30
Contact: SHAO Zhi-gang E-mail:zhgshao@dicp.ac.cn

摘要/Abstract

摘要： 利用溶剂热法，在N,N-二甲基甲酰胺（DMF）溶剂中共同还原乙酰丙酮铂（Pt(acac)₂）和乙酰丙酮铜（Cu(acac)₂）制备PtCu八面体合金催化剂. PtCu₂八面体表现出明显的晶格收缩、较高比例的非氧化态Pt单质和较高的电子结合能，进而表现出较弱的含氧物种吸附强度和较低的d 带中心位置. 系统研究结构导向剂对PtCu合金形貌影响. 在半电池测试中，由于PtCu₂具有均匀分散的规则八面体形貌结构，导致在0.9 V vs. RHE处氧还原（ORR）的质量比活性和面积比活性分别是Pt/C（JM）的6.3和27.2倍，并在加速衰减测试后其ORR的质量比活性仍达到Pt/C（JM）的4.5倍.

关键词: 燃料电池, 氧还原, PtCu, 八面体

Abstract: Platinum acetylacetonate (Pt(acac)₂) and copper acetylacetonate (Cu(acac)₂) were co-reduced to prepare PtCu₂ octahedron alloy catalyst in N,N-dimethylformamiade by solvothermal method. The PtCu₂ showed lattice compression, and high ratio of non-oxidized Pt with high electronic binding energy. All those structural features contributed to weak adsorption strength of oxygen species on Pt and lower d-band centre position. The influence of structure-directing agent on morphology of PtCu alloy was systematically studied. In the half cell test, as a result of the uniform morphology and regular octahedron of PtCu₂ formed, the mass activity and area specific activity of PtCu₂/C reached 6.2 and 27.2 times, respectively, relative to those of Pt/C at 0.9 V vs. RHE. Furthermore, after the accelarated degradation test, the mass activity of PtCu2/C still reached 4.5 times compared to that of Pt/C.

Key words: fuel cells, oxygen reduction, PtCu, octahedron

中图分类号:

O646

曹龙生, 万磊，邵志刚，俞红梅, 侯明，衣宝廉. PtCu₂八面体形貌调控及氧还原电催化性能研究[J]. 电化学（中英文）, 2018, 24(6): 697-706.

CAO Long-sheng, WAN Lei, SHAO Zhi-gang, YU Hong-mei, HOU Ming, YI Bao-lian. Morphological Control of PtCu₂ Octahedron and Oxygen Reduction Electrocatalytic Performance of PtCu for Fuel Cell[J]. Journal of Electrochemistry, 2018, 24(6): 697-706.

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链接本文: https://electrochem.xmu.edu.cn/CN/10.13208/j.electrochem.180848

https://electrochem.xmu.edu.cn/CN/Y2018/V24/I6/697

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PtCu₂八面体形貌调控及氧还原电催化性能研究

Morphological Control of PtCu₂ Octahedron and Oxygen Reduction Electrocatalytic Performance of PtCu for Fuel Cell

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