DataVXAdvanced MaterialsPaper
journal article·2023-02

Partially Nitrided Ni Nanoclusters Achieve Energy‐Efficient Electrocatalytic CO2 Reduction to CO at Ultralow Overpotential

Runyao Zhao, Yiding Wang, Guipeng Ji, Jiajun Zhong, Fengtao Zhang, Meifang Chen, Shengrui Tong, Peng Wang, Zhonghua Wu, Buxing Han, Zhimin Liu

Advanced Materials· Volume 35· Issue 5
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Source abstract

Abstract

Abstract Electrocatalytic CO2 reduction reaction (CO2RR) offers a promising strategy to lower CO2 emission while producing value‐added chemicals. A great challenge facing CO2RR is how to improve energy efficiency by reducing overpotentials. Herein, partially nitrided Ni nanoclusters (NiNx) immobilized on N‐doped carbon nanotubes (NCNT) for CO2RR are reported, which achieves the lowest onset overpotential of 16 mV for CO2‐to‐CO and the highest cathode energy efficiency of 86.9% with CO Faraday efficiency >99.0% to date. Interestingly, NiNx/NCNT affords a CO generation rate of 43.0 mol g−1 h−1 at a low potential of −0.572 V (vs RHE). DFT calculations reveal that the NiNx nanoclusters favor *COOH formation with lower Gibbs free energy than isolated Ni single‐atom, hence lowering CO2RR overpotential. As NiNx/NCNT is applied to a membrane electrode assembly system coupled with oxygen evolution reaction, a cell voltage of only 2.13 V is required to reach 100 mA cm−2, with total energy efficiency of 62.2%.
Source: crossref · Quality: baseline

Research context

Energy storageNanomaterialsCatalysis & surfaces

OpenAlex topics: CO2 Reduction Techniques and Catalysts · Ionic liquids properties and applications · Ammonia Synthesis and Nitrogen Reduction

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

Affiliations

Beijing National Laboratory for Molecular Sciences (BNLMS) CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics CAS Research/Education Center for Excellence in Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China

University of Chinese Academy of Sciences Beijing 100049 P. R. China

Beijing Synchrotron Radiation Facility Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 P. R. China

Henan Key Laboratory of Green Chemistry Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals Key Laboratory of Green Chemical Media and Reactions Ministry of Education School of Chemistry and Chemical Engineering Henan Normal University Xinxiang Henan 453007 P. R. China

Funding

National Key Research and Development Program of China · National Natural Science Foundation of China

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