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Carbon impurity-free, novel Mn,N co-doped porous Mo2C nanorods for an efficient and stable hydrogen evolution reaction
Zhou, Yajun; Xu, Jieyu; Lian, Cheng; Ge, Lin; Zhang, Lingxia; Li, Liang; Li, Yunheng; Wang, Min; Liu, Honglai; Li, Yongsheng
2019-09-01
Source PublicationINORGANIC CHEMISTRY FRONTIERS
ISSN2052-1553
Volume6Issue:9Pages:2464
SubtypeArticle
AbstractHeteroatom doping is an effective way to modulate the electronic configuration and optimize the electroactivity over a series of electrocatalytic materials. Here we report novel kinds of Mn,N co-doped porous Mo2C nanorods for the hydrogen evolution reaction (HER) in acidic solution, which are facilely fabricated based on Mn-modified MoOx-amine precursors. The obtained porous, monocrystalline nanorods without carbon impurities could not only provide abundant catalytic sites, but also facilitate electrolyte penetration and hydrogen release. Furthermore, the fine-tuned electronic structure of Mo2C nanorods with Mn,N dopants could produce more available active sites and reduce the hydrogen adsorption energy (Delta G(H*)). As a result, the optimized Mn,N co-doped Mo2C nanorods exhibit high HER activity with a low overpotential (eta(10) = 163 mV), a small Tafel slope (66 mV dec(-1)), and excellent long-term stability in acidic electrolyte. EPR and DFT calculations confirm that the high performance originates from new active sites (Mn site), a low charge-transfer resistance and an optimized adsorption-desorption behavior after Mn,N co-doping. This work may provide a new pathway to design and explore efficient non-noble metal water-splitting electrocatalysts via electronic engineering of their compositions and nanostructures.
DOI10.1039/c9qi00676a
Language英语
WOS Research AreaChemistry
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/26855
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Zhou, Yajun,Xu, Jieyu,Lian, Cheng,et al. Carbon impurity-free, novel Mn,N co-doped porous Mo2C nanorods for an efficient and stable hydrogen evolution reaction[J]. INORGANIC CHEMISTRY FRONTIERS,2019,6(9):2464.
APA Zhou, Yajun.,Xu, Jieyu.,Lian, Cheng.,Ge, Lin.,Zhang, Lingxia.,...&Li, Yongsheng.(2019).Carbon impurity-free, novel Mn,N co-doped porous Mo2C nanorods for an efficient and stable hydrogen evolution reaction.INORGANIC CHEMISTRY FRONTIERS,6(9),2464.
MLA Zhou, Yajun,et al."Carbon impurity-free, novel Mn,N co-doped porous Mo2C nanorods for an efficient and stable hydrogen evolution reaction".INORGANIC CHEMISTRY FRONTIERS 6.9(2019):2464.
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