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- Title
A Copper Silicide Nanofoam Current Collector for Directly Grown Si Nanowire Networks and their Application as Lithium‐Ion Anodes.
- Authors
Aminu, Ibrahim Saana; Geaney, Hugh; Imtiaz, Sumair; Adegoke, Temilade E.; Kapuria, Nilotpal; Collins, Gearoid A.; Ryan, Kevin M.
- Abstract
Silicon nanowires (Si NWs) have been identified as an excellent candidate material for the replacement of graphite in anodes, allowing for a significant boost in the capacity of lithium‐ion batteries (LIBs). Herein, high‐density Si NWs are grown on a novel 3D interconnected network of binary‐phase Cu‐silicide nanofoam (3D CuxSiy NF) substrate. The nanofoam facilitates the uniform distribution of well‐segregated and small‐sized catalyst seeds, leading to high‐density/single‐phase Si NW growth with an areal‐loading in excess of 1.0 mg cm−2 and a stable areal capacity of ≈2.0 mAh cm−2 after 550 cycles. The use of the 3D CuxSiy NF as a substrate is further extended for Al, Bi, Cu, In, Mn, Ni, Sb, Sn, and Zn mediated Si NW growth, demonstrating the general applicability of the anode architecture.
- Subjects
NANOWIRES; ANODES; SILICON nanowires; LITHIUM-ion batteries; CATALYSTS; COPPER-tin alloys
- Publication
Advanced Functional Materials, 2020, Vol 30, Issue 38, p1
- ISSN
1616-301X
- Publication type
Article
- DOI
10.1002/adfm.202003278