TY - JOUR
T1 - Modeling of lithium plating induced aging of lithium-ion batteries
T2 - Transition from linear to nonlinear aging
AU - Yang, Xiao Guang
AU - Leng, Yongjun
AU - Zhang, Guangsheng
AU - Ge, Shanhai
AU - Wang, Chao Yang
N1 - Funding Information:
Partial financial support by Pennsylvania Department of Environmental Protection, Diefenderfer Chair Endowment, DOE CAEBAT Program under award number DE-EE0006425 and BMW Group is gratefully acknowledged. We are also grateful to EC Power for offering numerical algorithms and materials database through its AutoLion™ software.
Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2017
Y1 - 2017
N2 - A physics-based Li-ion battery (LIB) aging model accounting for both lithium plating and solid electrolyte interphase (SEI) growth is presented, and is applied to study the aging behavior of a cell undergoing prolonged cycling at moderate operating conditions. Cell aging is found to be linear in the early stage of cycling but highly nonlinear in the end with rapid capacity drop and resistance rise. The linear aging stage is found to be dominated by SEI growth, while the transition from linear to nonlinear aging is attributed to the sharp rise of lithium plating rate. Lithium plating starts to occur in a narrow portion of the anode near the separator after a certain number of cycles. The onset of lithium plating is attributed to the drop of anode porosity associated with SEI growth, which aggravates the local electrolyte potential gradient in the anode. The presence of lithium metal accelerates the porosity reduction, further promoting lithium plating. This positive feedback leads to exponential increase of lithium plating rate in the late stage of cycling, as well as local pore clogging near the anode/separator interface which in turn leads to a sharp resistance rise.
AB - A physics-based Li-ion battery (LIB) aging model accounting for both lithium plating and solid electrolyte interphase (SEI) growth is presented, and is applied to study the aging behavior of a cell undergoing prolonged cycling at moderate operating conditions. Cell aging is found to be linear in the early stage of cycling but highly nonlinear in the end with rapid capacity drop and resistance rise. The linear aging stage is found to be dominated by SEI growth, while the transition from linear to nonlinear aging is attributed to the sharp rise of lithium plating rate. Lithium plating starts to occur in a narrow portion of the anode near the separator after a certain number of cycles. The onset of lithium plating is attributed to the drop of anode porosity associated with SEI growth, which aggravates the local electrolyte potential gradient in the anode. The presence of lithium metal accelerates the porosity reduction, further promoting lithium plating. This positive feedback leads to exponential increase of lithium plating rate in the late stage of cycling, as well as local pore clogging near the anode/separator interface which in turn leads to a sharp resistance rise.
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U2 - 10.1016/j.jpowsour.2017.05.110
DO - 10.1016/j.jpowsour.2017.05.110
M3 - Article
AN - SCOPUS:85020310134
VL - 360
SP - 28
EP - 40
JO - Journal of Power Sources
JF - Journal of Power Sources
SN - 0378-7753
ER -