Abstract
Through a combined density functional theory and in situ scanning electron microscopy study, we provide evidence of the ultrafast chemical lithiation of a single crystalline Si nanowire which is brought into direct contact with Li metal in the absence of an applied external electric field. Unlike the previous in situ lithiation results, the ultra-fast lithiation process in this study is purely driven by the concentration gradient and is found to be limited by Li diffusion through the pristine/lithiated Si phase boundary. The experimental and calculated lithiation speeds are in excellent agreement at around 1 μm s-1, corresponding to a high Li diffusivity value of about 10-9 cm2 s-1. The improved understanding of lithiation kinetics may contribute to the design of higher-power Si-based anodes. This journal is
| Original language | English |
|---|---|
| Pages (from-to) | 17438-17443 |
| Number of pages | 6 |
| Journal | RSC Advances |
| Volume | 5 |
| Issue number | 23 |
| DOIs | |
| Publication status | Published - 2015 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Chemical Engineering(all)
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Ultrafast chemical lithiation of single crystalline silicon nanowires : In situ characterization and first principles modeling. / Seo, Jong Hyun; Chou, Chia Yun; Tsai, Yu Hao; Cho, Yigil; Seong, Tae Yeon; Lee, Woo Jung; Cho, Mann Ho; Ahn, Jae Pyoung; Hwang, Gyeong S.; Choi, In Suk.
In: RSC Advances, Vol. 5, No. 23, 2015, p. 17438-17443.Research output: Contribution to journal › Article
TY - JOUR
T1 - Ultrafast chemical lithiation of single crystalline silicon nanowires
T2 - In situ characterization and first principles modeling
AU - Seo, Jong Hyun
AU - Chou, Chia Yun
AU - Tsai, Yu Hao
AU - Cho, Yigil
AU - Seong, Tae Yeon
AU - Lee, Woo Jung
AU - Cho, Mann Ho
AU - Ahn, Jae Pyoung
AU - Hwang, Gyeong S.
AU - Choi, In Suk
PY - 2015
Y1 - 2015
N2 - Through a combined density functional theory and in situ scanning electron microscopy study, we provide evidence of the ultrafast chemical lithiation of a single crystalline Si nanowire which is brought into direct contact with Li metal in the absence of an applied external electric field. Unlike the previous in situ lithiation results, the ultra-fast lithiation process in this study is purely driven by the concentration gradient and is found to be limited by Li diffusion through the pristine/lithiated Si phase boundary. The experimental and calculated lithiation speeds are in excellent agreement at around 1 μm s-1, corresponding to a high Li diffusivity value of about 10-9 cm2 s-1. The improved understanding of lithiation kinetics may contribute to the design of higher-power Si-based anodes. This journal is
AB - Through a combined density functional theory and in situ scanning electron microscopy study, we provide evidence of the ultrafast chemical lithiation of a single crystalline Si nanowire which is brought into direct contact with Li metal in the absence of an applied external electric field. Unlike the previous in situ lithiation results, the ultra-fast lithiation process in this study is purely driven by the concentration gradient and is found to be limited by Li diffusion through the pristine/lithiated Si phase boundary. The experimental and calculated lithiation speeds are in excellent agreement at around 1 μm s-1, corresponding to a high Li diffusivity value of about 10-9 cm2 s-1. The improved understanding of lithiation kinetics may contribute to the design of higher-power Si-based anodes. This journal is
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U2 - 10.1039/c4ra14953j
DO - 10.1039/c4ra14953j
M3 - Article
AN - SCOPUS:84923163710
VL - 5
SP - 17438
EP - 17443
JO - RSC Advances
JF - RSC Advances
SN - 2046-2069
IS - 23
ER -