Fe5C2nanoparticlesaslow-costHERelectrocatalyst:theimportanceofCosubstitution

被引：6

作者：

Siwei Li ^{[1
]}

Pengju Ren ^{[2
,3
]}

Ce Yang ^{[1
]}

Xi Liu ^{[2
,3
]}

Zhen Yin ^{[4
]}

Weizhen Li ^{[1
]}

Hanjun Yang ^{[1
]}

Jian Li ^{[1
]}

Xiaoping Wang ^{[2
,3
]}

Yi Wang ^{[2
,3
]}

Ruochen Cao ^{[1
]}

Lili Lin ^{[1
]}

Siyu Yao ^{[1
]}

Xiaodong Wen ^{[2
,3
]}

Ding Ma ^{[1
]}

机构：

[1] College of Chemistry and Molecular Engineering, Peking University

[2] State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences

[3] Syncat Beijing, Synfuels China Technology Co, Ltd

[4] State Key Laboratory of Separation Membranes and Membrane Processes, Department of Chemical Engineering, Tianjin Polytechnic University

来源：

ScienceBulletin | 2018年 / 63卷 / 20期

关键词：

Wet-chemistry synthesis; Bimetallic transition metal carbide; Iron; Cobalt; Hydrogenation evolution reaction;

D O I：

暂无

中图分类号：

O643.36 [催化剂]; TB383.1 [];

学科分类号：

081705 ; 070205 ; 080501 ; 1406 ;

摘要：

Constructing and understanding the doping effect of secondary metal in transition metal carbide（TMC）catalysts is pivotal for the design of low-cost hydrogen evolution reaction（HER） electrocatalysts. In this work, we developed a wet-chemistry strategy for synthesizing Co-modified Fe5C2 nanoparticles((Fe1-xCox)5C2 NPs) as highly active HER electrocatalysts in basic solution. The structure of(Fe1-xCox)5C2 NPs was characterized by X-ray diffraction（XRD）, extended X-ray absorption fine structure spectra（EXAFS） and scanning/transmission electron microscopy（S/TEM）, indicating that the isomorphous substitution of cobalt in the lattice of Fe5C2.(Fe0.75 Co0.25)5C2 exhibited the best HER activity（174 mV for j = -10 mA/cm2）. Computational calculation results indicate that Co provides the most active site for HER. X-ray adsorption spectra（XAS） studies further suggested that the electron transfer in Fe–C bonds are enhanced by the substitution of Co, which modulates the hydrogen adsorption on the adjacent electronic-enriched carbon, and therefore promotes HER activity. Our results affirm the design of lowcost bimetallic TMCs based HER catalysts.

引用

页码：1358 / 1363

页数：6

共 17 条

[1] AvicinaleffectforpromotingcatalysisofPd1/TiO2:supportsofatomicallydispersedcatalystsplaymorerolesthansimplyservingasligands [J].

Pengxin Liu ;

Yun Zhao ;

Ruixuan Qin ;

Lin Gu ;

Peng Zhang ;

Gang Fu ;

Nanfeng Zheng .

ScienceBulletin, 2018, 63 (11) :675-682

[2]

Decorating carbon nanofibers with Mo2C nanoparticles towards hierarchically porous and highly catalytic cathode for high-performance Li-O2 batteries[J]. Zhen-Dong Yang,Zhi-Wen Chang,Qi Zhang,Keke Huang,Xin-Bo Zhang.Science Bulletin. 2018(07)

[3]

Synthesis and application of transition metal phosphides as electrocatalyst for water splitting[J]. Jinzhan Su,Jinglan Zhou,Lu Wang,Cong Liu,Yubin Chen.Science Bulletin. 2017(09)

[4] 碳化铁功能化的三维氮掺杂碳材料制备及高性能电化学过氧化氢传感器的构建（英文） [J].

张瑞中 ;

陈卫 .

ScienceBulletin, 2015, 60 (05) :522-531

[5] Nanohybridization of MoS2 with Layered Double Hydroxides Efficiently Synergizes the Hydrogen Evolution in Alkaline Media [J].

Hu, Jue ;

Zhang, Chengxu ;

Jiang, Lin ;

Lin, He ;

An, Yiming ;

Zhou, Dan ;

Leung, Michael K. H. ;

Yang, Shihe .

JOULE, 2017, 1 (02) :383-393

[6] Opportunities and Challenges in Utilizing Metal-Modified Transition Metal Carbides as Low-Cost Electrocatalysts [J].

Tackett, Brian M. ;

Sheng, Wenchao ;

Chen, Jingguang G. .

JOULE, 2017, 1 (02) :253-263

[7]

Tuning the Selectivity of Catalytic Carbon Dioxide Hydrogenation over Iridium/Cerium Oxide Catalysts with a Strong Metal–Support Interaction[J] . Siwei Li,Yao Xu,Yifu Chen,Dr. Weizhen Li,Dr. Lili Lin,Mengzhu Li,Yuchen Deng,Dr. Xiaoping Wang,Dr. Binghui Ge,Dr. Ce Yang,Dr. Siyu Yao,Jinglin Xie,Prof. Dr. Yongwang Li,Dr. Xi Liu,Prof. Dr. Ding Ma.Angewandte Chemie International Edition . 2017 (36)

[8] Molybdenum Carbide-Embedded Nitrogen-Doped Porous Carbon Nanosheets as Electrocatalysts for Water Splitting in Alkaline Media [J].

Lu, Chenbao ;

Tranca, Diana ;

Zhang, Jian ;

Hernandez, Fermin Rodriguez ;

Su, Yuezeng ;

Zhuang, Xiaodong ;

Zhang, Fan ;

Seifert, Gotthard ;

Feng, Xinliang .

ACS NANO, 2017, 11 (04) :3933-3942

[9]

Selective Catalytic Synthesis Using the Combination of Carbon Dioxide and Hydrogen: Catalytic Chess at the Interface of Energy and Chemistry[J] . Prof. Dr. Jürgen Klankermayer,Sebastian Wesselbaum,Dr. Kassem Beydoun,Prof. Dr. Walter Leitner.Angewandte Chemie International Edition . 2016 (26)

[10] M3C (M: Fe, Co, Ni) Nanocrystals Encased in Graphene Nanoribbons: An Active and Stable Bifunctional Electrocatalyst for Oxygen Reduction and Hydrogen Evolution Reactions [J].

Fan, Xiujun ;

Peng, Zhiwei ;

Ye, Ruquan ;

Zhou, Haiqing ;

Guo, Xia .

ACS NANO, 2015, 9 (07) :7407-7418

← 1 2 →