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Strong Interface Enhanced Hydrogen Evolution over Molybdenum-Based Catalysts | |
2020-06-22 | |
发表期刊 | ACS APPLIED ENERGY MATERIALS |
ISSN | 2574-0962 |
卷号 | 3期号:6页码:5219-5228 |
发表状态 | 已发表 |
DOI | 10.1021/acsaem.0c00045 |
摘要 | By tuning interfacial structures, we have achieved an extremely small Tafel slope of 34.4 mV dec(-1) for the hydrogen evolution reaction (HER) over a molybdenum oxide catalyst in an acidic electrolyte. Such a small Tafel slope indicates the presence of active sites following the Volmer-Tafel mechanism, which is almost exclusively observed on platinum group metals. We attribute this excellent kinetic property to the enhancement effect from the metal/metal oxide Mo/MoOx) interface in the catalysts. This Mo/MoOx interface was obtained by tuning the hydrogen annealing method. Density functional theory calculations suggest that the hydrogen spillover from the Mo surface to the MoOx surface through an optimized interface will increase the hydrogen coverage on the MoOx surface. Thus, the hydrogen adsorption energy on MoOx can be reduced, making the recombination of the surface hydrogen feasible. Hydrogen temperature-programmed reduction provides clear evidence of hydrogen spillover from Mo to MoO2 at the Mo/MoO2 interfaces. Hence, the above Mo/MoOx interface will also lead to a high HER activity, as demonstrated by the high turnover frequency per active site (at 100, 150, and 200 mV vs the reversible hydrogen electrode, the values are approximately 0.004, 0.249, and 1.398 H-2 respectively). Our study demonstrates a new route to design low-cost-efficient HER catalysts of nonprecious metals by tuning transition metal/oxide interfaces. |
关键词 | catalysis electrochemistry hydrogen evolution reaction molybdenum oxide metal/oxide interface |
收录类别 | SCI ; SCIE ; EI |
资助项目 | National Natural Science Foundation of China[11227902][21902103] ; Science and Technology Committee of Shanghai[14520722100] ; Certificate of China Postdoctoral Science Foundation[2015LH0031] ; ME2 project under National Natural Science Foundation of China[11227902] |
WOS研究方向 | Chemistry ; Energy & Fuels ; Materials Science |
WOS类目 | Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary |
WOS记录号 | WOS:000543715100017 |
出版者 | AMER CHEMICAL SOC |
WOS关键词 | INITIO MOLECULAR-DYNAMICS ; TOTAL-ENERGY CALCULATIONS ; MOS2 NANOSHEETS ; NICKEL PHOSPHIDE ; CARBON-DIOXIDE ; ELECTROCATALYST ; REDUCTION ; GRAPHENE ; PLANE ; MOO2 |
原始文献类型 | Article |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/122417 |
专题 | 物质科学与技术学院_科学装置(X)_活细胞结构与功能成像等线站工程项目 物质科学与技术学院 大科学中心_PI研究组_刘志组 物质科学与技术学院_PI研究组_杨波组 物质科学与技术学院_硕士生 物质科学与技术学院_博士生 大科学中心 |
通讯作者 | Yang, Bo; Liu, Zhi; Li, Yimin |
作者单位 | 1.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, Shanghai 200050, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Boston Coll, Dept Chem, Chestnut Hill, MA 02467 USA |
第一作者单位 | 物质科学与技术学院 |
通讯作者单位 | 物质科学与技术学院 |
第一作者的第一单位 | 物质科学与技术学院 |
推荐引用方式 GB/T 7714 | Peng, Zheng,Wang, Kaili,Xu, Wei,et al. Strong Interface Enhanced Hydrogen Evolution over Molybdenum-Based Catalysts[J]. ACS APPLIED ENERGY MATERIALS,2020,3(6):5219-5228. |
APA | Peng, Zheng.,Wang, Kaili.,Xu, Wei.,Wang, Beibei.,Mao, Baohua.,...&Li, Yimin.(2020).Strong Interface Enhanced Hydrogen Evolution over Molybdenum-Based Catalysts.ACS APPLIED ENERGY MATERIALS,3(6),5219-5228. |
MLA | Peng, Zheng,et al."Strong Interface Enhanced Hydrogen Evolution over Molybdenum-Based Catalysts".ACS APPLIED ENERGY MATERIALS 3.6(2020):5219-5228. |
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