TY - JOUR
T1 - Influence of capacity fading on commercial lithium-ion battery impedance
AU - Osaka, T.
AU - Nakade, S.
AU - Rajamäki, M.
AU - Momma, T.
N1 - Funding Information:
This work was supported in part by Grant-in-Aid for COE Research “Molecular Nano-Engineering” and the 21st Century COE Program ‘Practical Nano-Chemistry’ from the Ministry of Education, Culture, Sports, Science and Technology, Japan.
PY - 2003/6/1
Y1 - 2003/6/1
N2 - The impedance spectrum of prismatic commercial Li-ion batteries is measured at various states of charge before and after the charge-discharge cycles and storage. The measured impedance is interpreted with a previously proposed equivalent circuit made up of anode and cathode in which the cathode component is composed of two particle size factors. The values corresponding to the characteristics of both electrodes are obtained by a fitting technique. The obtained values suggest that the capacity fade of the Li-ion battery due to the cycles is mainly caused by the increase of interfacial resistance of the cathode and a decrease in the anode capacity. These results suggest the validity of the equivalent circuit to interpret the causes of capacity fade.
AB - The impedance spectrum of prismatic commercial Li-ion batteries is measured at various states of charge before and after the charge-discharge cycles and storage. The measured impedance is interpreted with a previously proposed equivalent circuit made up of anode and cathode in which the cathode component is composed of two particle size factors. The values corresponding to the characteristics of both electrodes are obtained by a fitting technique. The obtained values suggest that the capacity fade of the Li-ion battery due to the cycles is mainly caused by the increase of interfacial resistance of the cathode and a decrease in the anode capacity. These results suggest the validity of the equivalent circuit to interpret the causes of capacity fade.
KW - Capacity fade
KW - Impedance
KW - Li-ion battery
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U2 - 10.1016/S0378-7753(03)00233-7
DO - 10.1016/S0378-7753(03)00233-7
M3 - Conference article
AN - SCOPUS:0038347412
SN - 0378-7753
VL - 119-121
SP - 929
EP - 933
JO - Journal of Power Sources
JF - Journal of Power Sources
T2 - Selected Papers Presented at the 11th IMLB
Y2 - 22 June 2002 through 28 June 2002
ER -
