TY - JOUR
T1 - Two-phase versus two-stage versus multi-phase lithiation kinetics in silicon
AU - Cui, Zhiwei
AU - Gao, Feng
AU - Qu, Jianmin
PY - 2013/9/30
Y1 - 2013/9/30
N2 - We classify the lithiation process into three types, namely, two-phase, two-stage, and multi-phase lithiation. We found that under a given charging rate, smaller electrochemical Biot number of β will likely to result in two-phase lithiation, while larger β may lead to multi-phase lithiation. For the film anode, intermediate β, or intermediate charging rate, will yield two-stage lithiation, and the Li concentration during the first stage of the lithiation is determined by the relationship between β and the charging rate (or more precisely the Li flux supplied to the Si/LixSi phase interface). Such two-stage lithiation does not occur in the particle or fiber anode.
AB - We classify the lithiation process into three types, namely, two-phase, two-stage, and multi-phase lithiation. We found that under a given charging rate, smaller electrochemical Biot number of β will likely to result in two-phase lithiation, while larger β may lead to multi-phase lithiation. For the film anode, intermediate β, or intermediate charging rate, will yield two-stage lithiation, and the Li concentration during the first stage of the lithiation is determined by the relationship between β and the charging rate (or more precisely the Li flux supplied to the Si/LixSi phase interface). Such two-stage lithiation does not occur in the particle or fiber anode.
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U2 - 10.1063/1.4824064
DO - 10.1063/1.4824064
M3 - Article
AN - SCOPUS:84885671980
SN - 0003-6951
VL - 103
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 14
M1 - 143901
ER -