Rationally Designed Hierarchically Structured Tungsten Nitride and Nitrogen-Rich Graphene-Like Carbon Nanocomposite as Efficient Hydrogen Evolution Electrocatalyst.
TLDR
This work highlights a powerful way to design more efficient metal–carbon composites catalysts for HER through rational design of a tungsten nitride–carbon composite.Abstract:
Practical application of hydrogen production from water splitting relies strongly on the development of low-cost and high-performance electrocatalysts for hydrogen evolution reaction (HER). The previous researches mainly focused on transition metal nitrides as HER catalysts due to their electrical conductivity and corrosion stability under acidic electrolyte, while tungsten nitrides have reported poorer activity for HER. Here the activity of tungsten nitride is optimized through rational design of a tungsten nitride–carbon composite. More specifically, tungsten nitride (WN) coupled with nitrogen-rich porous graphene-like carbon is prepared through a low-cost ion-exchange/molten-salt strategy. Benefiting from the nanostructured WN, the highly porous structure and rich nitrogen dopant (9.5 at%) of the carbon phase with high percentage of pyridinic-N (54.3%), and more importantly, their synergistic effect, the composite catalyst displays remarkably high catalytic activity while maintaining good stability. This work highlights a powerful way to design more efficient metal–carbon composites catalysts for HER.read more
Citations
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Recent Advances in Electrocatalytic Hydrogen Evolution Using Nanoparticles.
TL;DR: The fundamentals of HER are summarized and the recent state-of-the-art advances in the low-cost and high-performance catalysts based on noble and non-noble metals, as well as metal-free HER electrocatalysts are reviewed.
Journal ArticleDOI
Defect-Rich Heterogeneous MoS2/NiS2 Nanosheets Electrocatalysts for Efficient Overall Water Splitting.
Jinghuang Lin,Pengcheng Wang,Haohan Wang,Chun Li,Xiaoqing Si,Junlei Qi,Jian Cao,Zhengxiang Zhong,Weidong Fei,Jicai Feng +9 more
TL;DR: The optimal MoS2/NiS2 nanosheets show the enhanced Electrocatalytic performances as bifunctional electrocatalysts for overall water splitting and may open up a new route for rationally constructing heterogeneous interfaces to maximize their electrochemical performances, which may help to accelerate the development of nonprecious electrocatalyststs.
Journal ArticleDOI
Recent advances in nanostructured metal nitrides for water splitting
TL;DR: In this paper, a review summarizes the recent research progress made in nanostructured metal nitrides as efficient and cheap catalysts for electrochemical and photo(electro)chemical water splitting.
Journal ArticleDOI
In Situ/Operando Studies for Designing Next-generation Electrocatalysts
TL;DR: It has been widely acknowledged that most of the electrocatalysts would undergo a structural reconstruction during the water splitting as well as carbon dioxide (CO2) reduction reactions as discussed by the authors.
Journal ArticleDOI
Recent progress of transition metal nitrides for efficient electrocatalytic water splitting
TL;DR: In this paper, transition metal nitrides (TMNs) have been used for electrochemical water splitting to produce high-purity hydrogen and oxygen as alternatives to fossil fuel.
References
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TL;DR: A metal-organic frameworks-assisted strategy for synthesizing nanostructured transition metal carbide nano-octahedrons composed of ultrafine nanocrystallites exhibited remarkable electrocatalytic performance for hydrogen production from both acidic and basic solutions is demonstrated.
Journal ArticleDOI
A nanoporous molybdenum carbide nanowire as an electrocatalyst for hydrogen evolution reaction
Lei Liao,Sinong Wang,Jingjing Xiao,Xiaojun Bian,Yahong Zhang,Micheál D. Scanlon,Xile Hu,Yi Tang,Baohong Liu,Hubert H. Girault +9 more
TL;DR: In this paper, a highly active and stable electrochemical catalyst of nanoporous molybdenum carbide nanowires (np-Mo2C NWs) was developed for hydrogen evolution reaction (HER).
Journal ArticleDOI
Toward Design of Synergistically Active Carbon-Based Catalysts for Electrocatalytic Hydrogen Evolution
TL;DR: In this article, the authors designed and synthesized nitrogen and phosphorus dual-doped graphene as a non-metallic electrocatalyst for sustainable and efficient hydrogen production, which showed higher electrocatalytic hydrogen evolution reaction (HER) activity than single-dope ones and comparable performance to some traditional metallic catalysts.
Journal ArticleDOI
Coupled molybdenum carbide and reduced graphene oxide electrocatalysts for efficient hydrogen evolution
Ji-Sen Li,Yu Wang,Chun-Hui Liu,Shun-Li Li,Wang Yuguang,Long-Zhang Dong,Zhihui Dai,Yafei Li,Ya-Qian Lan +8 more
TL;DR: A two-dimensional coupled hybrid of molybdenum carbide and reduced graphene oxide with a ternary polyoxometalate-polypyrrole/reduced graphene oxide nanocomposite as a precursor exhibits outstanding electrocatalytic activity for the hydrogen evolution reaction and excellent stability in acidic media, which is the best among these reported non-noble-metal catalysts.