Journal ArticleDOI
Atmospheric-Pressure Synthesis of 2D Nitrogen-Rich Tungsten Nitride.
Huimin Yu,Xin Yang,Xu Xiao,Ming Chen,Qinghua Zhang,Liang Huang,Jiabing Wu,Tianqi Li,Shuangming Chen,Li Song,Lin Gu,Bao Yu Xia,Guang Feng,Jia Li,Jun Zhou +14 more
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TLDR
2D h-W2 N3 demonstrates an excellent catalytic activity for cathodic HER with an onset potential of -30.8 mV as well as an overpotential of -98.2 mV for 10 mA cm-2 .Abstract:
2D transition metal nitrides, especially nitrogen-rich tungsten nitrides (Wx Ny , y > x), such as W3 N4 and W2 N3 , have a great potential for the hydrogen evolution reaction (HER) since the catalytic activity is largely enhanced by the abundant WN bonding. However, the rational synthesis of 2D nitrogen-rich tungsten nitrides is challenging due to the large formation energy of WN bonding. Herein, ultrathin 2D hexagonal-W2 N3 (h-W2 N3 ) flakes are synthesized at atmospheric pressure via a salt-templated method. The formation energy of h-W2 N3 can be dramatically decreased owing to the strong interaction and domain matching epitaxy between KCl and h-W2 N3 . 2D h-W2 N3 demonstrates an excellent catalytic activity for cathodic HER with an onset potential of -30.8 mV as well as an overpotential of -98.2 mV for 10 mA cm-2 .read more
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Transition metal nitrides for electrochemical energy applications.
Hui Wang,Jianmin Li,Ke Li,Yanping Lin,Jianmei Chen,Lijun Gao,Valeria Nicolosi,Xu Xiao,Jong-Min Lee +8 more
TL;DR: The most up-to-date progress on TMN-based nanomaterials is comprehensively reviewed, focusing on geometric-st structure design, electronic-structure engineering, and applications in electrochemical energy conversion and storage, including electrocatalysis, supercapacitors, and rechargeable batteries.
Journal ArticleDOI
Anion-Modulated HER and OER Activities of 3D Ni-V-Based Interstitial Compound Heterojunctions for High-Efficiency and Stable Overall Water Splitting.
Haijing Yan,Ying Xie,Aiping Wu,Zhicheng Cai,Lei Wang,Chungui Tian,Xiaomeng Zhang,Honggang Fu +7 more
TL;DR: Good activity is ascribed to heterointerface for activating the intermediates, good conductivity of TMICs for electron-transfer, and porous structure facilitation of mass-transport, and easy coupling for efficient overall water splitting with a low driving voltage.
Journal ArticleDOI
Nitrogen Vacancies on 2D Layered W2N3: A Stable and Efficient Active Site for Nitrogen Reduction Reaction
Huanyu Jin,Laiquan Li,Xin Liu,Cheng Tang,Wenjie Xu,Shuangming Chen,Li Song,Yao Zheng,Shi-Zhang Qiao +8 more
TL;DR: A series of ex situ synchrotron-based characterizations prove that the nitrogen vacancies on 2D W2 N3 are stable by virtue of the high valence state of tungsten atoms and 2D confinement effect.
Journal ArticleDOI
Single-Crystal Nitrogen-Rich Two-Dimensional Mo5N6 Nanosheets for Efficient and Stable Seawater Splitting.
TL;DR: In this article, an atomically thin nitrogen-rich nanosheets, Mo5N6, was designed and synthesized with the help of a Ni-inducing growth method.
References
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Journal ArticleDOI
Enhanced catalytic activity in strained chemically exfoliated WS 2 nanosheets for hydrogen evolution
Damien Voiry,Hisato Yamaguchi,Junwen Li,Rafael Silva,Diego C. B. Alves,Takeshi Fujita,Mingwei Chen,Tewodros Asefa,Vivek B. Shenoy,Goki Eda,Manish Chhowalla +10 more
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Journal ArticleDOI
Hydrogen evolution by a metal-free electrocatalyst
Yao Zheng,Yan Jiao,Yihan Zhu,Lu Hua Li,Yu Han,Ying Chen,Aijun Du,Mietek Jaroniec,Shi-Zhang Qiao +8 more
TL;DR: This work couple graphitic-carbon nitride with nitrogen-doped graphene to produce a metal-free hybrid catalyst, which shows an unexpected hydrogen evolution reaction activity with comparable overpotential and Tafel slope to some of well-developed metallic catalysts.