Controlling electric potential to inhibit solid-electrolyte interphase formation on nanowire anodes for ultrafast lithium-ion batteriesopen access
- Authors
- Chang, Won Jun; Kim, Su Han; Hwang, Jiseon; Chang, Jinho; Yang, Dong Won; Kwon, Sun Sang; Kim, Jin Tae; Lee, Won Woo; Lee, Jae Hyung; Park, Hyunjung; Song, Taeseup; Lee, In-Hwan; Whang, Dongmok; Park, Won Il
- Issue Date
- Aug-2018
- Publisher
- NATURE PUBLISHING GROUP
- Citation
- NATURE COMMUNICATIONS, v.9, no.1
- Indexed
- SCIE
SCOPUS
- Journal Title
- NATURE COMMUNICATIONS
- Volume
- 9
- Number
- 1
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/16789
- DOI
- 10.1038/s41467-018-05986-9
- ISSN
- 2041-1723
- Abstract
- With increasing demand for high-capacity and rapidly rechargeable anodes, problems associated with unstable evolution of a solid-electrolyte interphase on the active anode surface become more detrimental. Here, we report the near fatigue-free, ultrafast, and high-power operations of lithium-ion battery anodes employing silicide nanowires anchored selectively to the inner surface of graphene-based micro-tubular conducting electrodes. This design electrically shields the electrolyte inside the electrode from an external potential load, eliminating the driving force that generates the solid-electrolyte interphase on the nanowire surface. Owing to this electric control, a solid-electrolyte interphase develops firmly on the outer surface of the graphene, while solid-electrolyte interphase-free nanowires enable fast electronic and ionic transport, as well as strain relaxation over 2000 cycles, with 84% capacity retention even at ultrafast cycling (>20C). Moreover, these anodes exhibit unprecedentedly high rate capabilities with capacity retention higher than 88% at 80C (vs. the capacity at 1C).
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