Scalable processing hollow tungsten carbide spherical superstructure as an enhanced electrocatalyst for hydrogen evolution reaction over a wide pH range

2019 ◽  
Vol 319 ◽  
pp. 775-782 ◽  
Author(s):  
Yanan Wang ◽  
Lipeng Zhang ◽  
Xiuxia Meng ◽  
Liu Feng ◽  
Ting Wang ◽  
...  
Keyword(s):  
Tungsten Carbide ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Wide Ph Range ◽  
Ph Range

scholarly journals Defect-Rich Heterogeneous MoS2/rGO/NiS Nanocomposite for Efficient pH-Universal Hydrogen Evolution

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 662 ◽  
Author(s):  
Guangsheng Liu ◽  
Kunyapat Thummavichai ◽  
Xuefeng Lv ◽  
Wenting Chen ◽  
Tingjun Lin ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Active Sites ◽  
Reduced Graphene ◽  
Heterogeneous Interfaces ◽  
Wide Ph Range ◽  
Ph Range ◽  
A Current ◽  
Poor Stability

Molybdenum disulfide (MoS2) has been universally demonstrated to be an effective electrocatalytic catalyst for hydrogen evolution reaction (HER). However, the low conductivity, few active sites and poor stability of MoS2-based electrocatalysts hinder its hydrogen evolution performance in a wide pH range. The introduction of other metal phases and carbon materials can create rich interfaces and defects to enhance the activity and stability of the catalyst. Herein, a new defect-rich heterogeneous ternary nanocomposite consisted of MoS2, NiS and reduced graphene oxide (rGO) are synthesized using ultrathin αNi(OH)2 nanowires as the nickel source. The MoS2/rGO/NiS-5 of optimal formulation in 0.5 M H2SO4, 1.0 M KOH and 1.0 M PBS only requires 152, 169 and 209 mV of overpotential to achieve a current density of 10 mA cm−2 (denoted as η10), respectively. The excellent HER performance of the MoS2/rGO/NiS-5 electrocatalyst can be ascribed to the synergistic effect of abundant heterogeneous interfaces in MoS2/rGO/NiS, expanded interlayer spacings, and the addition of high conductivity graphene oxide. The method reported here can provide a new idea for catalyst with Ni-Mo heterojunction, pH-universal and inexpensive hydrogen evolution reaction electrocatalyst.

Low-ruthenium-content NiRu nanoalloys encapsulated in nitrogen-doped carbon as highly efficient and pH-universal electrocatalysts for the hydrogen evolution reaction

2018 ◽  
Vol 6 (4) ◽  
pp. 1376-1381 ◽  
Author(s):  
You Xu ◽  
Shuli Yin ◽  
Chunjie Li ◽  
Kai Deng ◽  
Hairong Xue ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Efficient Catalyst ◽  
Nitrogen Doped ◽  
Highly Efficient ◽  
Wide Ph Range ◽  
Ph Range ◽  
Nitrogen Doped Carbon

A NiRu@N–C hybrid is fabricated and tested as an efficient catalyst for the hydrogen evolution reaction in a wide pH range.

Tuning d-band center of tungsten carbide via Mo doping for efficient hydrogen evolution and Zn–H2O cell over a wide pH range

Nano Energy ◽  
2020 ◽  
Vol 74 ◽  
pp. 104850 ◽  
Author(s):  
Lin Wang ◽  
Zhongjian Li ◽  
Kexin Wang ◽  
Qizhou Dai ◽  
Chaojun Lei ◽  
...  
Keyword(s):  
Tungsten Carbide ◽  
Hydrogen Evolution ◽  
Band Center ◽  
Mo Doping ◽  
Wide Ph Range ◽  
Ph Range

MoS2 Quantum Dots as Efficient Electrocatalyst for Hydrogen Evolution Reaction over a Wide pH Range

2020 ◽  
Vol 34 (8) ◽  
pp. 10268-10275
Author(s):  
Bishnupad Mohanty ◽  
Arijit Mitra ◽  
Bijayalaxmi Jena ◽  
Bikash Kumar Jena
Keyword(s):  
Quantum Dots ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Wide Ph Range ◽  
Ph Range

Ultralow Ru incorporated MoS2 nanosheet arrays for efficient electrocatalytic hydrogen evolution in dual-pH

2022 ◽  
Author(s):  
Hao Cui ◽  
Rui Dong ◽  
Jinchan Zhao ◽  
Pengfei Tan ◽  
Jianping Xie ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Nanosheet Arrays ◽  
Wide Ph Range ◽  
Mos2 Nanosheet ◽  
Ph Range

The design of cheap yet effective electrocatalysts for hydrogen evolution reaction (HER) that can function over a wide pH range is highly desirable. In this work, ultralow Ru incorporated MoS2...

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