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33. RuP2-based hybrids derived from MOFs: highly efficient pH-universal electrocatalysts for the hydrogen evolution reaction.

Author

Li, Ji-Sen, Huang, Meng-Jie, Zhou, Yu-Wei, Chen, Xiao-Nan, Yang, Shuang, Zhu, Ji-Yu, Liu, Guo-Dong, Ma, Ling-Juan, Cai, Sheng-Hao, and Han, Ji-Yuan

Abstract

Rational design of efficient, low-cost, and durable electrocatalysts for the hydrogen evolution reaction (HER) in various pH media is highly desirable but remains challenging. Herein, for the first time, we present a novel hybrid of ruthenium diphosphide encapsulated in P-doped porous carbon (denoted as RuP2@PC) utilizing metal–organic frameworks (MOFs) as templates by a multi-step strategy. Unexpectedly, benefitting from the synergistic contribution of highly dispersed ultrafine RuP2 nanoparticles, porous carbon skeleton, and P-dopant, the as-synthesized RuP2@PC exhibits exceptional catalytic activity and superior durability as pH-universal electrocatalysts for the HER. Particularly, a low overpotential of 78.9 mV to deliver a current density of 10 mA cm−2 and a small Tafel slope of 36.7 mV dec−1 can be achieved in 1.0 M KOH toward the HER. Such outstanding electrocatalytic properties exceed those of commercial Pt/C and rank the catalyst among the best HER electrocatalysts reported until now. Importantly, this work paves a new route in elaborately fabricating efficient and stable electrocatalysts based on MOFs for energy-related fields. [ABSTRACT FROM AUTHOR]

Published
2021
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34. Engineering MoxC nanoparticles confined in N,P-codoped porous carbon hollow spheres for enhanced hydrogen evolution reaction.

Author

Li, Ji-Sen, Zhou, Yu-Wei, and Huang, Meng-Jie

Subjects
*HYDROGEN evolution reactions, *COMPOSITE structures, *NANOPARTICLES, *SPHERES, *CARBON, *ENGINEERING
Abstract

N,P-codoped porous carbon hollow nanosphere confining ultrafine molybdenum carbide nanoparticles are designed and prepared through a facile method. By virtue of the distinct composite and structure advantages, the resulting composite shows significantly enhanced electrocatalytic performance toward the hydrogen evolution reaction. [ABSTRACT FROM AUTHOR]

Published
2021
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47. Ruthenium Nanoparticles Anchored on Graphene Hollow Nanospheres Superior to Platinum for the Hydrogen Evolution Reaction in Alkaline Media

Author

Li, Ji-Sen, Huang, Meng-Jie, Kong, Ling-Xin, Chen, Xiao-Nan, Zhou, Yu-Wei, Li, Jun-Lei, and Wang, Ming-Yu

Abstract

The design and construction of highly efficient and stable Pt-free catalysts for the electrocatalytic hydrogen evolution reaction (HER) in alkaline media is extremely desirable. Herein, a novel hybrid of ruthenium (Ru) nanoparticles anchored on graphene hollow nanospheres (GHSs) is synthesized by a template-assisted strategy. The combination of ultrafine Ru nanoparticles and hollow spherical support endows the resultant Ru/GHSs an extraordinary catalytic performance with a low overpotential of 24.4 mV at a current density of 10 mA cm–2, a small Tafel slope of 34.8 mV dec–1, as well as long-term stability in 1.0 M KOH solution, which is, to our knowledge, superior to commercial 20% Pt–C catalyst and most of the state-of-the-art HER electrocatalysts reported. Remarkably, this work provides a new route for the development of other metal-based HER electrocatalysts for energy-related applications.

Published
2020
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