journal article·2021-09-27

Ni Hollow Fiber Encapsulated Bi@Zeolite for Efficient CO2 Electroreduction

Xiaoju Zhao, Yanfang Song, Shuai Yang, Wei Chen, Tong Li, Gangfeng Wu, Shoujie Li, Guihua Li, Xiao Dong, Zheng Jiang, Wei Wei, Yuhan Sun

ACS Applied Energy Materials· Volume 4· Issue 9
Publisher page

Abstract

CO2 electroreduction has attracted considerable investigations due to the desirable coupling of renewable energy utilization and value-added chemical production. However, it encounters the bottlenecks of high energy barrier and low efficiency owing to the limited CO2 solubility and mass transfer. Herein, a porous Ni hollow fiber encapsulated Bi@Zeolite catalyst was developed as a self-standing gas diffusion electrode for efficient CO2 reduction to CO. Such a delicate electrode configuration reinforces CO2 adsorption/activation on Bi@Zeolite active sites and favors mass transfer due to a shortened and directed diffusion path. These synergetic promotions induced by Bi@Zeolite encapsulated in Ni hollow fiber achieved a high CO Faradaic efficiency of 74.1% at only an overpotential of 260 mV in the ionic-liquid based electrolyte, which was 2.6 times that on the Ni foil planar configuration. In addition, both CO Faradaic efficiency and current density remained almost constant for the duration of a 16 h test, further indicating the superiority of the Ni hollow fiber encapsulated configuration. This work demonstrates the potential of using a hollow fiber to reinforce reaction kinetics for efficient CO2 electroreduction.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: CO2 Reduction Techniques and Catalysts · Ionic liquids properties and applications · Catalysis and Oxidation Reactions

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

Affiliations

CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, People’s Republic of China

University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China

Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201210, China

Shanghai Synchrotron Radiation Facility, Zhangjiang Lab, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, PR China

College of Materials Science and Engineering, Shanghai University, Shanghai 200444, China

School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, People’s Republic of China

Funding

Ministry of Science and Technology of the People's Republic of China · Science and Technology Commission of Shanghai Municipality · National Natural Science Foundation of China · Shanghai Functional Platform for Innovation Low Carbon Technology

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