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Electrochemically Dealloyed 3D Porous Copper Nanostructure as Anode Current Collector of Li-Metal Batteries
Abstract
Abstract The commercialization of high‐energy Li‐metal batteries is impeded by Li dendrites formed during electrochemical cycling and the safety hazards it causes. Here, a novel porous copper current collector that can effectively mitigate the dendritic growth of Li is reported. This porous Cu foil is fabricated via a simple two‐step electrochemical process, where Cu‐Zn alloy is electrodeposited on commercial copper foil and then Zn is electrochemically dissolved to form a 3D porous structure of Cu. The 3D porous Cu layers on average have a thickness of ≈14 um and porosity of ≈72%. This current collector can effectively suppress Li dendrites in cells cycled with a high areal capacity of 10 mAh cm −2 and under a high current density of 10 mA cm −2 . This electrochemical fabrication method is facile and scalable for mass production. Results of advanced in situ synchrotron X‐ray diffraction reveal the phase evolution of the electrochemical deposition and dealloying processes.
- Authors:
-
- Georgia Institute of Technology, Atlanta, GA (United States)
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Publication Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States); Argonne National Laboratory (ANL), Argonne, IL (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF); National Science Foundation (NSF); USDOE
- OSTI Identifier:
- 2319174
- Alternate Identifier(s):
- OSTI ID: 1973551
- Report Number(s):
- BNL-225363-2024-JAAM
Journal ID: ISSN 1613-6810
- Grant/Contract Number:
- SC0012704; AC0206CH11357; AC02-76SF00515; CHE 2108688; DMR 2004878
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Small
- Additional Journal Information:
- Journal Volume: 19; Journal Issue: 28; Journal ID: ISSN 1613-6810
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Ma, Yifan, Ma, Xuetian, Bai, Jianming, Xu, Wenqian, Zhong, Hui, Liu, Zhantao, Xiong, Shan, Yang, Lufeng, and Chen, Hailong. Electrochemically Dealloyed 3D Porous Copper Nanostructure as Anode Current Collector of Li-Metal Batteries. United States: N. p., 2023.
Web. doi:10.1002/smll.202301731.
Ma, Yifan, Ma, Xuetian, Bai, Jianming, Xu, Wenqian, Zhong, Hui, Liu, Zhantao, Xiong, Shan, Yang, Lufeng, & Chen, Hailong. Electrochemically Dealloyed 3D Porous Copper Nanostructure as Anode Current Collector of Li-Metal Batteries. United States. https://doi.org/10.1002/smll.202301731
Ma, Yifan, Ma, Xuetian, Bai, Jianming, Xu, Wenqian, Zhong, Hui, Liu, Zhantao, Xiong, Shan, Yang, Lufeng, and Chen, Hailong. Fri .
"Electrochemically Dealloyed 3D Porous Copper Nanostructure as Anode Current Collector of Li-Metal Batteries". United States. https://doi.org/10.1002/smll.202301731.
@article{osti_2319174,
title = {Electrochemically Dealloyed 3D Porous Copper Nanostructure as Anode Current Collector of Li-Metal Batteries},
author = {Ma, Yifan and Ma, Xuetian and Bai, Jianming and Xu, Wenqian and Zhong, Hui and Liu, Zhantao and Xiong, Shan and Yang, Lufeng and Chen, Hailong},
abstractNote = {Abstract The commercialization of high‐energy Li‐metal batteries is impeded by Li dendrites formed during electrochemical cycling and the safety hazards it causes. Here, a novel porous copper current collector that can effectively mitigate the dendritic growth of Li is reported. This porous Cu foil is fabricated via a simple two‐step electrochemical process, where Cu‐Zn alloy is electrodeposited on commercial copper foil and then Zn is electrochemically dissolved to form a 3D porous structure of Cu. The 3D porous Cu layers on average have a thickness of ≈14 um and porosity of ≈72%. This current collector can effectively suppress Li dendrites in cells cycled with a high areal capacity of 10 mAh cm −2 and under a high current density of 10 mA cm −2 . This electrochemical fabrication method is facile and scalable for mass production. Results of advanced in situ synchrotron X‐ray diffraction reveal the phase evolution of the electrochemical deposition and dealloying processes.},
doi = {10.1002/smll.202301731},
journal = {Small},
number = 28,
volume = 19,
place = {United States},
year = {Fri May 12 00:00:00 EDT 2023},
month = {Fri May 12 00:00:00 EDT 2023}
}
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