Semantic Scholar Open Access 2020 223 sitasi

Engineering Ni2P-NiSe2 heterostructure interface for highly efficient alkaline hydrogen evolution

Caichi Liu Tao Gong Jun Zhang Xuerong Zheng J. Mao +3 lainnya

Abstrak

Abstract Developing earth-abundant transition-metal phosphides electrocatalysts with high activity and good durability toward alkaline hydrogen evolution reaction (HER) is crucial for sustainable hydrogen energy economy. However, their intrinsic activity is limited by the inadequate hydrogen adsorption energy. Herein, we reported a novel self-supported heterostructure catalyst in the form of Ni2P-NiSe2, which is obtained by phosphorization of NiSe2 nanosheet arrays grown on the carbon cloth. The heterostructure catalyst exhibits excellent HER performance in 1 M KOH, only requiring an overpotential of 66 mV at a current density of 10 mA cm−2 with a Tafel slope of 72.6 mV dec-1 and showing excellent long-term durability. The experimental and theoretical calculation results demonstrate the strongly electronic interaction between Ni2P and NiSe2, resulting in the optimized Gibbs free energy of hydrogen and water adsorption. This work concerning the regulation of electronic structure through interface engineering may offer a deep insight to explore superior catalysts.

Topik & Kata Kunci

Materials Science

Penulis (8)

Caichi Liu

Tao Gong

Jun Zhang

Xuerong Zheng

J. Mao

Hui Liu

Ying Li

Qiuyan Hao

Format Sitasi

APA MLA BibTeX

Liu, C., Gong, T., Zhang, J., Zheng, X., Mao, J., Liu, H. et al. (2020). Engineering Ni2P-NiSe2 heterostructure interface for highly efficient alkaline hydrogen evolution. https://doi.org/10.1016/j.apcatb.2019.118245

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Informasi Jurnal

Tahun Terbit: 2020
Bahasa: en
Total Sitasi: 223×
Sumber Database: Semantic Scholar
DOI: 10.1016/j.apcatb.2019.118245
Akses: Open Access ✓