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다차원 탄소재료 연구단
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Selectively accelerated lithium ion transport to silicon anodes via an organogel binder

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Title
Selectively accelerated lithium ion transport to silicon anodes via an organogel binder
Author(s)
Hwang, C; Cho, YG; Kang, NR; Ko, Y; Lee, U; Ahn, D; Ju-Young Kim; Kim, YJ; Song, HK
Publication Date
2015-12
Journal
JOURNAL OF POWER SOURCES, v.298, no., pp.8 - 13
Publisher
ELSEVIER SCIENCE BV
Abstract
Silicon, a promising high-capacity anode material of lithium ion batteries, suffers from its volume expansion leading to pulverization and low conductivities, showing capacity decay during cycling and low capacities at fast charging and discharging. In addition to popular active-material-modifying strategies, building lithium-ion-rich environments around silicon surface is helpful in enhancing unsatisfactory performances of silicon anodes. In this work, we accelerated lithium ion transport to silicon surface by using an organogel binder to utilize the electroactivity of silicon in a more efficient way. The cyanoethyl polymer (PVA-CN), characterized by high lithium ion transference number as well as appropriate elastic modulus with strong adhesion, enhanced cycle stability of silicon anodes with high coulombic efficiency even at high temperature (60 degrees C) as well as at fast charging/discharging rates. (C) 2015 Elsevier B.V. All rights reserved
URI
https://pr.ibs.re.kr/handle/8788114/2224
ISSN
0378-7753
Appears in Collections:
Center for Multidimensional Carbon Materials(다차원 탄소재료 연구단) > Journal Papers (저널논문)
Files in This Item:
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