journal article·2023-04-03

Lattice Distorted Rhodium Nanocrystals in Porous Nanofiber toward Aqueous Zinc-CO2 System

Yang Song, Yaobin Wang, Yunxia Zhao, Linlin Cheng, Gao-Feng Han, Feng Li, Yunfei Bu

ACS Materials Letters· Volume 5· Issue 4
Publisher page

Abstract

Directly harvesting hydrogen from water represents a green solution toward low-cost, high-efficiency, and sustainable electrochemical energy transfer and storage. Herein, a unique approach to allow maximization of the intrinsic activity and hydrogen adsorption/desorption kinetics with engineering a lattice of rhodium (Rh) for an aqueous zinc-CO 2 system is reported. The enlarged Rh–Rh bonding and lattice relaxation of Rh species cause improvement of the adsorption/desorption kinetics of H*, which can directly affect the hydrogen evolution reaction (HER). An ultralow overpotential of 6.8 mV is achieved at a current density of 10 mA cm –2 from the permanent lattice relaxed Rh under acidic conditions. In a practical application in the aqueous zinc-CO 2 system, its stable hydrogen generation performance is better than that of the benchmark platinum/carbon system. This work might open opportunities for the design and engineering of electrocatalysts for high-efficiency conversion from electric energy to hydrogen energy.
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Research context

OpenAlex topics: Electrocatalysts for Energy Conversion · Advanced battery technologies research · Supercapacitor Materials and Fabrication

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Environmental Science, Nanjing Xiao Zhuang University, Nanjing 211000, People’s Republic of China

UNIST-NUIST Research Center of Environment and Energy (UNNU), Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET), Joint International Research Laboratory of Climate and Environment Change (ILCEC), School of Environmental Science and Technology, Nanjing University of Information Science and Technology (NUIST), Nanjing 210044, People’s Republic of China

Key Laboratory of Automobile Materials, Ministry of Education, and School of Materials Science and Engineering, Jilin University, Changchun 130000, China

Laboratory of Advanced Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, 220 Handan, Shanghai 200433, People’s Republic of China

Funding

Major Basic Research Project of the Natural Science Foundation of the Jiangsu Higher Education Institutions · National Natural Science Foundation of China · Jiangsu Provincial Specially Appointed Professors Foundation

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