我组于凯在Nano-Micro Letters上发表论文

题目：

Immobilization of Oxyanions on the Reconstructed Heterostructure Evolved from a Bimetallic Oxysulfde for the Promotion of Oxygen Evolution Reaction

作者：

Kai Yu,[a]Hongyuan Yang,[b]Hao Zhang,[a]Hui Huang,[a]Zhaowu Wang,[d]Zhenhui Kang,[a]*Yang Liu,[a]Prashanth W. Menezes,[b,c]*Ziliang Chen,[a,b,c]*

单位：

[a] Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, People’s Republic of China.

[b]Department of Chemistry: Metalorganics and Inorganic Materials, Technical University of Berlin, Straße Des 17 Juni 135. Sekr. C2, 10623 Berlin, Germany.

[c] Materials Chemistry Group for Thin Film Catalysis – CatLab, Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Str. 15, 12489 Berlin, Germany.

[d] School of Physics and Engineering, Longmen Laboratory, Henan University of Science and Technology, Luoyang 471023, People’s Republic of China

摘要：

Efficient and durable oxygen evolution reaction (OER) requires the electrocatalyst to bear abundant active sites, optimized electronic structure as well as robust component and mechanical stability. Herein, a bimetallic lanthanum-nickel oxysulfide with rich oxygen vacancies based on the La₂O₂S prototype is fabricated as a binder-free precatalyst for alkaline OER. The combination of advanced in situ and ex situ characterizations with theoretical calculation uncovers the synergistic effect among La, Ni, O, and S species during OER, which assures the adsorption and stabilization of the oxyanion (SO₄^2-) onto the surface of the deeply reconstructed porous heterostructure composed of confining NiOOH nanodomains by La(OH)₃barrier. Such coupling, confinement, porosity and immobilization enable notable improvement in active site accessibility, phase stability, mass diffusion capability and the intrinsic Gibbs free energy of oxygen-containing intermediates. The optimized electrocatalyst delivers exceptional alkaline OER activity and durability, outperforming most of the Ni-based benchmark OER electrocatalysts.

影响因子：

26.6

分区情况：

1区

链接：

https://link.springer.com/article/10.1007/s40820-023-01164-9?utm_source=xmol&utm_medium=affiliate&utm_content=meta&utm_campaign=DDCN_1_GL01_metadata