Thermo-osmosis-Coupled Thermally Regenerative Electrochemical Cycle for Efficient Lithium Extraction.

Yuan, Z; Yu, Y; Wei, L; Wang, C; Zhong, X; Sui, X; Yu, Z; Han, DS; Shon, H; Chen, Y

Thermo-osmosis-Coupled Thermally Regenerative Electrochemical Cycle for Efficient Lithium Extraction.

Yuan, Z Yu, Y Wei, L Wang, C Zhong, X Sui, X Yu, Z Han, DS Shon, H

Chen, Y

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Publisher:: American Chemical Society
Publication Type:: Journal Article
Citation:: ACS Applied Materials and Interfaces, 2021, 13, (5), pp. 6276-6285
Issue Date:: 2021-02-10

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Field	Value	Language
dc.contributor.author	Yuan, Z
dc.contributor.author	Yu, Y
dc.contributor.author	Wei, L
dc.contributor.author	Wang, C
dc.contributor.author	Zhong, X
dc.contributor.author	Sui, X
dc.contributor.author	Yu, Z
dc.contributor.author	Han, DS
dc.contributor.author	Shon, H https://orcid.org/0000-0002-3777-7169
dc.contributor.author	Chen, Y
dc.date.accessioned	2022-05-03T04:43:26Z
dc.date.available	2022-05-03T04:43:26Z
dc.date.issued	2021-02-10
dc.identifier.citation	ACS Applied Materials and Interfaces, 2021, 13, (5), pp. 6276-6285
dc.identifier.issn	1944-8244
dc.identifier.issn	1944-8252
dc.identifier.uri	http://hdl.handle.net/10453/156932
dc.description.abstract	Lithium (Li) production based on the soda evaporation process is time-consuming and unsustainable. The emerging electrochemical Li extraction is time-efficient but requires high-concentration Li sources and significant electrical energy input. Here, we demonstrate a fast, energy-saving, and environment-friendly Li production process by coupling a thermally regenerative electrochemical cycle (TREC) using lithium manganese oxide (LMO) and nickel hexacyanoferrate (NiHCF) electrodes with poly(vinylidene fluoride) membrane-based thermo-osmosis (denoted as TO-TREC). The characterization of LMO and NiHCF electrodes confirmed that the relatively high temperature of TO-TREC has negligible adverse effects on the ion intercalation in LMO and NiHCF electrodes. The LMO/NiHCF pair has a positive temperature coefficient of 0.843 mV K-1. In the TO-TREC process, Li ions are selectively extracted from a Li-containing brine warmed by low-grade heat and then released into a room-temperature recovery solution such as LiCl with a production rate of 50-60 mmol Li+ m-2 h-1. Li source solutions are concentrated by thermo-osmosis simultaneously, making it possible to utilize previously unusable Li-containing sources, such as concentrated brines from desalination plants and industrial effluents. Besides, the TREC harvests thermal energy from the heated brine, saving >20% of electrical energy compared to conventional electrochemical methods. The new process shows the potential to meet the growing global Li demands for many applications.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	American Chemical Society
dc.relation.ispartof	ACS Applied Materials and Interfaces
dc.relation.isbasedon	10.1021/acsami.0c20464
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	03 Chemical Sciences, 09 Engineering
dc.subject.classification	Nanoscience & Nanotechnology
dc.title	Thermo-osmosis-Coupled Thermally Regenerative Electrochemical Cycle for Efficient Lithium Extraction.
dc.type	Journal Article
utslib.citation.volume	13
utslib.location.activity	United States
utslib.for	03 Chemical Sciences
utslib.for	09 Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2022-05-03T04:43:23Z
pubs.issue	5
pubs.publication-status	Published
pubs.volume	13
utslib.citation.issue	5

Abstract:

Lithium (Li) production based on the soda evaporation process is time-consuming and unsustainable. The emerging electrochemical Li extraction is time-efficient but requires high-concentration Li sources and significant electrical energy input. Here, we demonstrate a fast, energy-saving, and environment-friendly Li production process by coupling a thermally regenerative electrochemical cycle (TREC) using lithium manganese oxide (LMO) and nickel hexacyanoferrate (NiHCF) electrodes with poly(vinylidene fluoride) membrane-based thermo-osmosis (denoted as TO-TREC). The characterization of LMO and NiHCF electrodes confirmed that the relatively high temperature of TO-TREC has negligible adverse effects on the ion intercalation in LMO and NiHCF electrodes. The LMO/NiHCF pair has a positive temperature coefficient of 0.843 mV K-1. In the TO-TREC process, Li ions are selectively extracted from a Li-containing brine warmed by low-grade heat and then released into a room-temperature recovery solution such as LiCl with a production rate of 50-60 mmol Li+ m-2 h-1. Li source solutions are concentrated by thermo-osmosis simultaneously, making it possible to utilize previously unusable Li-containing sources, such as concentrated brines from desalination plants and industrial effluents. Besides, the TREC harvests thermal energy from the heated brine, saving >20% of electrical energy compared to conventional electrochemical methods. The new process shows the potential to meet the growing global Li demands for many applications.

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http://hdl.handle.net/10453/156932