气候变化领域集成服务门户(CCPortal): Techno-economic assessment of low-temperature carbon dioxide electrolysis

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DOI	10.1038/s41893-021-00739-x
	Techno-economic assessment of low-temperature carbon dioxide electrolysis
	Shin H.; Hansen K.U.; Jiao F.
发表日期	2021
ISSN	2398-9629
起始页码	911
结束页码	919
卷号	4 期号:10
英文摘要	Low-temperature CO2 electrolysis represents a potential enabling process in the production of renewable chemicals and fuels, notably carbon monoxide, formic acid, ethylene and ethanol. Because this technology has progressed rapidly in recent years, a systematic techno-economic assessment has become necessary to evaluate its feasibility as a CO2 utilization approach. Here this work provides a comprehensive techno-economic assessment of four major products and prioritizes the technological development with systematic guidelines to facilitate the market deployment of low-temperature CO2 electrolysis. First, we survey state-of-the-art electrolyser performance and parameterize figures of merit. The analysis shows that production costs of carbon monoxide and formic acid (C1 products) are approaching US$0.44 and 0.59 kg–1, respectively, competitive with conventional processes. In comparison, the production of ethylene and ethanol (C2 products) is not immediately feasible due to their substantially higher costs of US$2.50 and 2.06 kg–1, respectively. We then provide a detailed roadmap to making C2 product production economically viable: an improvement in energetic efficiency to ~50% and a reduction in electricity price to US$0.01 kWh–1. We also propose industrially relevant benchmarks: 5-year stability of electrolyser components and the single-pass conversion of 30 and 15% for C1 and C2 products, respectively. Finally we discuss the economic aspects of two potential strategies to address electrolyte neutralization utilizing either an anion exchange membrane or bipolar membrane. © 2021, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	Aliphatic compounds; Carbon dioxide; Carbon dioxide process; Carbon monoxide; Cost benefit analysis; Electrolysis; Electrolytes; Ethanol; Ethanol fuels; Ethylene; Formic acid; Ion exchange membranes; Temperature; Anion exchange membrane; Economically viable; Electricity prices; Energetic efficiency; Product production; Renewable chemicals; Techno-economic assessment; Technological development; Low temperature production
来源期刊	Nature Sustainability
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/249733
作者单位	Center for Catalytic Science and Technology, Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE, United States
推荐引用方式 GB/T 7714	Shin H.,Hansen K.U.,Jiao F.. Techno-economic assessment of low-temperature carbon dioxide electrolysis[J],2021,4(10).
APA	Shin H.,Hansen K.U.,&Jiao F..(2021).Techno-economic assessment of low-temperature carbon dioxide electrolysis.Nature Sustainability,4(10).
MLA	Shin H.,et al."Techno-economic assessment of low-temperature carbon dioxide electrolysis".Nature Sustainability 4.10(2021).