气候变化领域集成服务门户(CCPortal): Using reverse osmosis membranes to control ion transport during water electrolysis

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DOI	10.1039/d0ee02173c
	Using reverse osmosis membranes to control ion transport during water electrolysis
	Shi L.; Rossi R.; Son M.; Hall D.M.; Hickner M.A.; Gorski C.A.; Logan B.E.
发表日期	2020
ISSN	1754-5692
起始页码	3138
结束页码	3148
卷号	13 期号:9
英文摘要	The decreasing cost of electricity produced using solar and wind and the need to avoid CO2 emissions from fossil fuels has heightened interest in hydrogen gas production by water electrolysis. Offshore and coastal hydrogen gas production using seawater and renewable electricity is of particular interest, but it is currently economically infeasible due to the high costs of ion exchange membranes and the need to desalinate seawater in existing electrolyzer designs. A new approach is described here that uses relatively inexpensive commercially available membranes developed for reverse osmosis (RO) to selectively transport favorable ions. In an applied electric field, RO membranes have a substantial capacity for proton and hydroxide transport through the active layer while excluding salt anions and cations. A perchlorate salt was used to provide an inert and contained anolyte, with charge balanced by proton and hydroxide ion flow across the RO membrane. Synthetic seawater (NaCl) was used as the catholyte, where it provided continuous hydrogen gas evolution. The RO membrane resistance was 21.7 ± 3.5 Ω cm2 in 1 M NaCl and the voltages needed to split water in a model electrolysis cell at current densities of 10-40 mA cm-2 were comparable to those found when using two commonly used, more expensive ion exchange membranes. This journal is © The Royal Society of Chemistry.
语种	英语
scopus关键词	Electric fields; Electrolysis; Electrolytic cells; Fossil fuels; Gas emissions; Gas industry; Hydrogen fuels; Hydrogen production; Ion exchange; Ion exchange membranes; Ions; Offshore oil well production; Reverse osmosis; Seawater; Sodium chloride; Cost of electricity; Electrolysis cell; Hydrogen gas evolution; Perchlorate salt; Renewable electricity; Substantial capacity; Synthetic seawater; Water electrolysis; Osmosis membranes; electrochemistry; equipment component; ion exchange; membrane; performance assessment; reverse osmosis; water
来源期刊	Energy and Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162756
作者单位	Department of Civil and Environmental Engineering, Pennsylvania State University, University Park, PA, United States; Department of Energy and Mineral Engineering, Pennsylvania State University, University Park, PA, United States; Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, United States
推荐引用方式 GB/T 7714	Shi L.,Rossi R.,Son M.,et al. Using reverse osmosis membranes to control ion transport during water electrolysis[J],2020,13(9).
APA	Shi L..,Rossi R..,Son M..,Hall D.M..,Hickner M.A..,...&Logan B.E..(2020).Using reverse osmosis membranes to control ion transport during water electrolysis.Energy and Environmental Science,13(9).
MLA	Shi L.,et al."Using reverse osmosis membranes to control ion transport during water electrolysis".Energy and Environmental Science 13.9(2020).