Boosting the electrochemical performance of 3D composite lithium metal anodes through synergistic structure and interface engineering

Chen, Y; Ke, X; Cheng, Y; Fan, M; Wu, W; Huang, X; Liang, Y; Zhong, Y; Ao, Z; Lai, Y; Wang, G; Shi, Z

Boosting the electrochemical performance of 3D composite lithium metal anodes through synergistic structure and interface engineering

Chen, Y Ke, X Cheng, Y Fan, M Wu, W Huang, X Liang, Y Zhong, Y Ao, Z Lai, Y Wang, G

Shi, Z

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Publisher:: Elsevier BV
Publication Type:: Journal Article
Citation:: Energy Storage Materials, 2020, 26, pp. 56-64
Issue Date:: 2020-04-01

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Field	Value	Language
dc.contributor.author	Chen, Y
dc.contributor.author	Ke, X
dc.contributor.author	Cheng, Y
dc.contributor.author	Fan, M
dc.contributor.author	Wu, W
dc.contributor.author	Huang, X
dc.contributor.author	Liang, Y
dc.contributor.author	Zhong, Y
dc.contributor.author	Ao, Z
dc.contributor.author	Lai, Y
dc.contributor.author	Wang, G https://orcid.org/0000-0003-4295-8578
dc.contributor.author	Shi, Z
dc.date.accessioned	2020-11-05T05:10:42Z
dc.date.available	2020-11-05T05:10:42Z
dc.date.issued	2020-04-01
dc.identifier.citation	Energy Storage Materials, 2020, 26, pp. 56-64
dc.identifier.issn	2405-8289
dc.identifier.issn	2405-8297
dc.identifier.uri	http://hdl.handle.net/10453/143770
dc.description.abstract	© 2019 Elsevier B.V. Construction of three-dimensional (3D) composite lithium metal anodes (LMAs) based on Li melt-infusion into a 3D porous scaffold has been demonstrated to be effective for solving the issue of the considerable relative volume change of LMAs during Li plating/stripping. However, little attention has been paid to controllable regulation of the structure and interface of 3D composite LMAs. In this study, 3D composite LMAs, namely Li–AuLi3@CF electrodes, are firstly fabricated by infusion of molten Li into carbon fiber (CF) paper modified with nanoporous gold (NPG) which is converted to AuLi3 after infusion. We herein demonstrate a synergistic structure and interface engineering strategy realized by a simple and effective pre-stripping protocol to initially expose a portion of the 3D AuLi3@CF scaffold to create “PS-Li-AuLi3@CF” electrodes, which greatly boosted the electrochemical performance. Symmetrical Li\|Li cells with PS-Li-AuLi3@CF electrodes show an overpotential of 111 mV after cycling at a current density of 0.5 mA cm−2 for 1800 h. Additionally, Li\|LiFePO4 (LFP) and Li\|sulfurized polyacrylonitrile (SPAN) full cells with PS-Li-AuLi3@CF electrodes exhibit a high capacity retention of 96.1% with a Coulombic efficiency (CE) of 99.2% after 1000 cycles at 5C, and a capacity retention of 70.6% with a CE of 99.8% after 1000 cycles at 2C, respectively. This work provides a simple and highly effective method for engineering the structure and interface of 3D composite LMAs to boost their electrochemical performance for high-energy-density rechargeable lithium metal batteries (LMBs).
dc.language	en
dc.publisher	Elsevier BV
dc.relation.ispartof	Energy Storage Materials
dc.relation.isbasedon	10.1016/j.ensm.2019.12.023
dc.rights	info:eu-repo/semantics/restrictedAccess
dc.subject	0904 Chemical Engineering, 0906 Electrical and Electronic Engineering
dc.title	Boosting the electrochemical performance of 3D composite lithium metal anodes through synergistic structure and interface engineering
dc.type	Journal Article
utslib.citation.volume	26
utslib.for	0904 Chemical Engineering
utslib.for	0906 Electrical and Electronic Engineering
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Strength - CCET - Centre for Clean Energy Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2020-11-05T05:10:35Z
pubs.publication-status	Published
pubs.volume	26

Abstract:

© 2019 Elsevier B.V. Construction of three-dimensional (3D) composite lithium metal anodes (LMAs) based on Li melt-infusion into a 3D porous scaffold has been demonstrated to be effective for solving the issue of the considerable relative volume change of LMAs during Li plating/stripping. However, little attention has been paid to controllable regulation of the structure and interface of 3D composite LMAs. In this study, 3D composite LMAs, namely Li–AuLi3@CF electrodes, are firstly fabricated by infusion of molten Li into carbon fiber (CF) paper modified with nanoporous gold (NPG) which is converted to AuLi3 after infusion. We herein demonstrate a synergistic structure and interface engineering strategy realized by a simple and effective pre-stripping protocol to initially expose a portion of the 3D AuLi3@CF scaffold to create “PS-Li-AuLi3@CF” electrodes, which greatly boosted the electrochemical performance. Symmetrical Li|Li cells with PS-Li-AuLi3@CF electrodes show an overpotential of 111 mV after cycling at a current density of 0.5 mA cm−2 for 1800 h. Additionally, Li|LiFePO4 (LFP) and Li|sulfurized polyacrylonitrile (SPAN) full cells with PS-Li-AuLi3@CF electrodes exhibit a high capacity retention of 96.1% with a Coulombic efficiency (CE) of 99.2% after 1000 cycles at 5C, and a capacity retention of 70.6% with a CE of 99.8% after 1000 cycles at 2C, respectively. This work provides a simple and highly effective method for engineering the structure and interface of 3D composite LMAs to boost their electrochemical performance for high-energy-density rechargeable lithium metal batteries (LMBs).

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http://hdl.handle.net/10453/143770