气候变化领域集成服务门户(CCPortal): Scalable fabrication of high activity nanoporous copper powders for electrochemical CO2reduction via ball milling and dealloying

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DOI	10.1016/j.jcou.2021.101454
	Scalable fabrication of high activity nanoporous copper powders for electrochemical CO2reduction via ball milling and dealloying
	Qi Z.; Biener M.M.; Kashi A.R.; Hunegnaw S.; Leung A.; Ma S.; Huo Z.; Kuhl K.P.; Biener J.
发表日期	2021
ISSN	22129820
卷号	45
英文摘要	Electrochemical CO2 reduction (ECR) is a promising technology to close the anthropic CO2 circle using renewable energy to achieve carbon neutrality. Future commercialization of ECR will require the development of new catalyst synthesis routes that will allow significant upscaling of catalyst production from current research-level milligram quantities to the kilogram scale and beyond while maintaining the activity and selectivity demonstrated at the research level. In this work, we report on generating and testing submicron-sized nanoporous copper (npCu) particles by using a scalable approach consisting of ball milling brittle Cu-based intermetallics followed by dealloying to add nanoporosity for high surface area. The resulting npCu particles have been tested in an industry-relevant large area (25 cm2) electrolyzer platform and showed Faraday efficiencies (FE) for ethylene up to 34 % at current densities of 75-100 mA/cm2 while keeping FE for hydrogen less than 30 %. Our results demonstrate that a combination of ball milling and dealloying is a promising approach to generate large quantities of high activity and high surface area npCu particles for ECR at an industry-relevant scale. © 2021 Elsevier Ltd.
英文关键词	Copper; Dealloying; Electrochemical CO2reduction; Ethylene production; Scale-Up
scopus关键词	Carbon dioxide; Catalyst selectivity; Copper powder; Dealloying; Ethylene; Milling (machining); Carbon neutralities; Catalyst production; Catalyst synthesis; Faraday efficiency; High surface area; Nano-porous coppers; Renewable energies; Scalable approach; Ball milling
来源期刊	Journal of CO2 Utilization
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/177093
作者单位	Materials Science Division, Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94550, United States; Opus 12 Incorporated, 614 Bancroft Way, Berkeley, CA 94710, United States
推荐引用方式 GB/T 7714	Qi Z.,Biener M.M.,Kashi A.R.,et al. Scalable fabrication of high activity nanoporous copper powders for electrochemical CO2reduction via ball milling and dealloying[J],2021,45.
APA	Qi Z..,Biener M.M..,Kashi A.R..,Hunegnaw S..,Leung A..,...&Biener J..(2021).Scalable fabrication of high activity nanoporous copper powders for electrochemical CO2reduction via ball milling and dealloying.Journal of CO2 Utilization,45.
MLA	Qi Z.,et al."Scalable fabrication of high activity nanoporous copper powders for electrochemical CO2reduction via ball milling and dealloying".Journal of CO2 Utilization 45(2021).