Increasing the cycle life of lithium ion cells by partial state of charge cycling

2015 ◽  
Vol 55 (11) ◽  
pp. 2247-2253 ◽  
Author(s):  
Hans de Vries ◽  
Thanh Trung Nguyen ◽  
Bert Op het Veld
Keyword(s):  
Lithium Ion ◽  
State Of Charge ◽  
Cycle Life ◽  
Lithium Ion Cells ◽  
Partial State

Theoretical prediction of state of charge of lithium ion cells

2005 ◽  
Vol 576 (1) ◽  
pp. 43-47 ◽  
Author(s):  
S. Shriram ◽  
N.G. Renganathan ◽  
M. Ganesan ◽  
M.V.T. Dhananjeyan
Keyword(s):  
Theoretical Prediction ◽  
Lithium Ion ◽  
State Of Charge ◽  
Lithium Ion Cells

scholarly journals Degradation Reactions in SONY-Type Li-Ion Batteries

1999 ◽  
Vol 575 ◽  
Author(s):  
E. Peter Roth ◽  
G. Nagasubramanian
Keyword(s):  
Lithium Ion ◽  
Thermal Runaway ◽  
The State ◽  
State Of Charge ◽  
Reaction Products ◽  
Exothermic Reactions ◽  
Degradation Reactions ◽  
Lithium Ion Cells ◽  
Reaction Region ◽  
Charge Degree

ABSTRACTThermal instabilities were identified in SONY-type lithium-ion cells and correlated with interactions of cell constituents and reaction products. Three temperature regions of interaction were identified and associated with the state of charge (degree of Li intercalation) of the cell. Anodes were shown to undergo exothermic reactions as low as 100°C involving the solid electrolyte interface (SEI) layer and the LiPF6 salt in the electrolyte (EC:PC:DEC/LiPF6). These reactions could account for the thermal runaway observed in these cells beginning at 100°C. Exothermic reactions were also observed in the 200°C-300°C region between the intercalated lithium anodes, the LiPF6 salt, and the PVDF. These reactions were followed by a hightemperature reaction region, 300°C-400°C, also involving the PVDF binder and the intercalated lithium anodes. The solvent was not directly involved in these reactions but served as a moderator and transport medium. Cathode exothermic reactions with the PVDF binder were observed above 200°C and increased with the state of charge (decreasing Li content). This offers an explanation for the observed lower thermal runaway temperatures for charged cells.

scholarly journals Temperature dependency of state of charge inhomogeneities and their equalization in cylindrical lithium-ion cells

2016 ◽  
Vol 329 ◽  
pp. 546-552 ◽  
Author(s):  
P.J. Osswald ◽  
S.V. Erhard ◽  
A. Rheinfeld ◽  
B. Rieger ◽  
H.E. Hoster ◽  
...  
Keyword(s):  
Lithium Ion ◽  
State Of Charge ◽  
Temperature Dependency ◽  
Lithium Ion Cells

scholarly journals Mechanical and electrical response of cylindrical Lithium-ion cells at various State of Charge

2018 ◽  
Vol 145 ◽  
pp. 128-132
Author(s):  
WenWei Wang ◽  
Sheng Yang ◽  
Cheng Lin ◽  
YiDing Li
Keyword(s):  
Electrical Response ◽  
Lithium Ion ◽  
State Of Charge ◽  
Lithium Ion Cells
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