Synergistic Doping and Intercalation: Realizing Deep Phase Modulation on MoS2 Arrays for High-Efficiency Hydrogen Evolution Reaction

Deng, Shengjue; Luo, Mi; Ai, Changzhi; Zhang, Yan; Liu, Bo; Huang, Lei; Jiang, Zheng; Zhang, Qinghua; Gu, Lin; Lin, Shiwei; Wang, Xiuli; Yu, Lei; Wen, Jianguo; Wang, Jiaao; Pan, Guoxiang; Xia, Xinhui; Tu, Jiangping

doi:10.1002/anie.201909698

Title: Synergistic Doping and Intercalation: Realizing Deep Phase Modulation on MoS₂ Arrays for High-Efficiency Hydrogen Evolution Reaction

Journal Article · Thu Sep 05 00:00:00 UTC 2019 · Angewandte Chemie (International Edition)

DOI: https://doi.org/10.1002/anie.201909698 · OSTI ID:1756165

Deng, Shengjue ^[1]; Luo, Mi ^[2]; Ai, Changzhi ^[3]; Zhang, Yan ^[1]; Liu, Bo ^[1]; Huang, Lei ^[1]; Jiang, Zheng ^[2]; Zhang, Qinghua ^[4]; Gu, Lin ^[4]; Lin, Shiwei ^[3]; Wang, Xiuli ^[1]; Yu, Lei ^[5]; Wen, Jianguo ^[5]; Wang, Jiaao ^[6]; Pan, Guoxiang ^[7];

^[1]; Tu, Jiangping ^[1]

Zhejiang Univ., Hangzhou (China)
Chinese Academy of Sciences (CAS), Shanghai (China)
South China Sea Hainan Univ., Haikou (China)
Chinese Academy of Sciences (CAS), Beijing (China)
Argonne National Lab. (ANL), Argonne, IL (United States)
Univ. of Jinan, Jinan (China)
Huzhou Univ. (China)

A synergistic N doping plus PO₄^3- intercalation strategy is used to induce high conversion (ca. 41%) of 2H-MoS₂ into 1T-MoS, which is much higher than single N doping (ca. 28 %) or single PO₄^3- intercalation ca. 10%). A scattering mechanism is proposed to illustrate the synergistic phase transformation from the 2H to the 1T phase, which was confirmed by synchrotron radiation and.spherical aberration TEM. To further enhance reaction kindies, the designed (N, PO₄^3-)-MoS₂ nanosheds are combined with conductive vertical graphene (VG) skeleton forming binder-free arrays fir high efficiencyhydrogen evolution reaction (HER). Owing 10 the decreased band gap, lower d-band censer, and smaller hydrogen adsorption/desorption energy, the designed (NPO₄^3-)-MoSJVG electrode shows excellent HER perfor mance with a lower Tafel slope and overpotential than N-MoS₂/VG, PO₄^3--MoS₂/VG counterparts, and other Mo-base catalysts in the literature.

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Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1756165

Journal Information:: Angewandte Chemie (International Edition), Journal Name: Angewandte Chemie (International Edition) Journal Issue: 45 Vol. 58; ISSN 1433-7851

Publisher:: WileyCopyright Statement

Country of Publication:: United States

Language:: English

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Title: Synergistic Doping and Intercalation: Realizing Deep Phase Modulation on MoS2 Arrays for High-Efficiency Hydrogen Evolution Reaction

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