Platinum single-atom catalyst coupled with transition metal/metal oxide heterostructure for accelerating alkaline hydrogen evolution reaction.
Kai Ling Zhou,Zelin Wang,Chang Bao Han,Xiaoxing Ke,Changhao Wang,Yuhong Jin,Qianqian Zhang,Jingbing Liu,Hao Wang,Hui Yan +9 more
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In this article, a single-atom platinum immobilized NiO/Ni heterostructure (PtSA-NiO//Ni) was developed as an alkaline hydrogen evolution catalyst.Abstract:
Single-atom catalysts provide an effective approach to reduce the amount of precious metals meanwhile maintain their catalytic activity. However, the sluggish activity of the catalysts for alkaline water dissociation has hampered advances in highly efficient hydrogen production. Herein, we develop a single-atom platinum immobilized NiO/Ni heterostructure (PtSA-NiO/Ni) as an alkaline hydrogen evolution catalyst. It is found that Pt single atom coupled with NiO/Ni heterostructure enables the tunable binding abilities of hydroxyl ions (OH*) and hydrogen (H*), which efficiently tailors the water dissociation energy and promotes the H* conversion for accelerating alkaline hydrogen evolution reaction. A further enhancement is achieved by constructing PtSA-NiO/Ni nanosheets on Ag nanowires to form a hierarchical three-dimensional morphology. Consequently, the fabricated PtSA-NiO/Ni catalyst displays high alkaline hydrogen evolution performances with a quite high mass activity of 20.6 A mg−1 for Pt at the overpotential of 100 mV, significantly outperforming the reported catalysts. While H2 evolution from water may represent a renewable energy source, there is a strong need to improve catalytic efficiencies while maximizing materials utilization. Here, authors examine single-atom Pt on nickel-based heterostructures as highly active electrocatalysts for alkaline H2 evolution.read more
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Atomic heterointerface engineering overcomes the activity limitation of electrocatalysts and promises highly-efficient alkaline water splitting
Qiucheng Xu,Jiahao Zhang,Haoxuan Zhang,Liyue Zhang,Ling Chen,Yanjie Hu,Hao Jiang,Chunzhong Li +7 more
TL;DR: In this paper, a review of the recent progress of atomic heterointerface engineering to improve the activity of electrocatalysts is presented, in which the ensemble effect is helpful in optimizing the reaction pathways with enhanced reaction kinetics and the electron effect can balance the adsorption energies of reaction intermediates by coupling their electronic configurations.
Journal ArticleDOI
Subnanometric Ru clusters with upshifted D band center improve performance for alkaline hydrogen evolution reaction
Qi Hu,Keru Gao,Xiaodeng Wang,Hongju Zheng,Jieshan Cao,Lingren Mi,Qihua Huo,Hengpan Yang,Jianhong Liu,Chuanxin He +9 more
TL;DR: In this paper , a series of Ru nanocrystals from single atoms, subnanometric clusters to larger nanoparticles was synthesized, aiming at investigating the size-dependent activity of hydrogen evolution in alkaline media.
Journal ArticleDOI
Interstitial boron-triggered electron-deficient Os aerogels for enhanced pH-universal hydrogen evolution
TL;DR: In this article , boron-modulated osmium (B-Os) aerogels with rich defects and ultra-fine diameter were used as a pH-universal HER electrocatalyst, achieving small overpotentials of 12, 19, and 33 mV at a current density of 10 mA cm −2 in acidic, alkaline, and neutral electrolytes, respectively.
Journal ArticleDOI
Efficient Alkaline Water/Seawater Hydrogen Evolution by a Nanorod‐Nanoparticle‐Structured Ni‐MoN Catalyst with Fast Water‐Dissociation Kinetics
Libo Wu,Fanghao Zhang,Shaowei Song,Min Ning,Qing Zhu,Jianqiu Zhou,Guanhui Gao,Zhaoyang Chen,Qiancheng Zhou,Xinxin Xing,Tian Tong,Yan-li Yao,Jiming Bao,Luo Yu,Shuo Chen,Zhifeng Ren +15 more
TL;DR: In this paper , a heterogeneous Ni-MoN catalyst consisting of Ni and MoN nanoparticles on amorphous MoN nanorods is demonstrated, which can sustain large-current-density HER with outstanding performance.
Journal ArticleDOI
Atomic‐Level Platinum Filling into Ni‐Vacancies of Dual‐Deficient NiO for Boosting Electrocatalytic Hydrogen Evolution
Yaotian Yan,Jing Huang Lin,Tianxiong Xu,Baishen Liu,Keke Huang,Liang Qiao,Shude Liu,Jianbo Cao,Seong Chan Jun,Yusuke Yamauchi,Junlei Qi +10 more
TL;DR: In this paper , a vacancy-driven Pt filling strategy was proposed to fill Ni-vacancy (Niv) sites of dual-deficient NiO (D•NiO•Pt) deliberately created by Ar plasma with homogeneously distributed Pt atoms driven by oxygen vacancies.
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