Zhao, Yinchao, Liu, Chenguang, Sun, Yi, Yi, Ruowei, Cai, Yutao, Li, Yinqing, Mitrovic, Ivona 
ORCID: 0000-0003-4816-8905, Taylor, Stephen ORCID: 0000-0002-2144-8459, Chalker, Paul ORCID: 0000-0002-2295-6332, Yang, Li et al (show 1 more authors)
(2019)
3D-structured multi-walled carbon nanotubes/copper nanowires composite as a porous current collector for the enhanced silicon-based anode.
JOURNAL OF ALLOYS AND COMPOUNDS, 803.
pp. 505-513.
ISSN 0925-8388, 1873-4669
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Text
Zhao et al-JAlloysComp-Accepted Manuscript-2019.pdf - Author Accepted Manuscript Download (20MB) | Preview |
Abstract
In this study, multi-walled carbon nanotubes/Cu nanowires-coated on the copper foil used as a three-dimensional porous current collector for Si electrode has been developed to tackle the problems of silicon-based lithium-ion batteries. The highly conductive Cu nanowires cooperated with robust multi-walled carbon nanotubes not only improve the inferior electric conductivity of the Si anode but also strengthen the total frame stability. Furthermore, the three-dimensional structure creates numerous voids on the surface of Cu foils. Such porous structure of the modified current collector offers the flexible volume expansion during lithiation/delithiation process. Meanwhile, the core-shell structure of multi-walled carbon nanotubes/Si and Cu nanowires/Si minimizes the deformation strain and greatly improves the long-term cycling performance in a real battery. As a result, a high specific capacity of 1845 mAh g<sup>−1</sup> in a half cell at a current density of 3.5 A g<sup>−1</sup> after 180 cycles with a capacity retention of 85.1% has been achieved without any conductive additives or binder. The demonstrated three-dimensional current collector coupled with Si anode might inspire new material development on high-performance of lithium-ion batteries.
| Item Type: | Article |
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| Uncontrolled Keywords: | Si-based lithium-ion batteries, Copper nanowires, Multi-walled carbon nanotubes |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 22 Jul 2019 09:12 |
| Last Modified: | 13 Jun 2025 11:31 |
| DOI: | 10.1016/j.jallcom.2019.06.302 |
| Related Websites: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3050191 |
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