Mechanism for capacity fading of 18650 cylindrical lithium ion batteries

Abstract The mechanism for capacity fading of 18650 lithium ion full cells under room-temperature (RT) is discussed systematically. The capacity loss of 18650 cells is about 12.91% after 500 cycles. The cells after cycles are analyzed by XRD, SEM, EIS and CV. Impedance measurement shows an overall increase in the cell resistance upon cycling. Moreover, it also presents an increased charge-transfer resistance ( R ct ) for the cell cycled at RT. CV test shows that the reversibility of lithium ion insertion/extraction reaction is reduced. The capacity fading for the cells cycled can be explained by taking into account the repeated film formation over the surface of anode and the side reactions. The products of side reactions deposited on separator are able to reduce the porosity of separator. As a result, the migration resistance of lithium ion between the cathode and anode would be increased, leading the fading of capacity and potential.

[1]  Xunhui Xiong,et al.  Beneficial effects of 1-propylphosphonic acid cyclic anhydride as an electrolyte additive on the electrochemical properties of LiNi0.5Mn1.5O4 cathode material , 2014 .

[2]  Haishen Song,et al.  Capacity fade of LiFePO4/graphite cell at elevated temperature , 2013, Journal of Solid State Electrochemistry.

[3]  Tsuyoshi Sasaki,et al.  Capacity-Fading Mechanisms of LiNiO2-Based Lithium-Ion Batteries II. Diagnostic Analysis by Electron Microscopy and Spectroscopy , 2009 .

[4]  Zhixing Wang,et al.  A MoS2 Coating Strategy to Improve the Comprehensive Electrochemical Performance of LiVPO4F , 2016 .

[5]  Jung-Hyun Kim,et al.  Understanding the capacity fading mechanism in LiNi0.5Mn1.5O4/graphite Li-ion batteries , 2013 .

[6]  C. Doh,et al.  Cycle life modeling and the capacity fading mechanisms in a graphite/LiNi0.6Co0.2Mn0.2O2 cell , 2015, Journal of Applied Electrochemistry.

[7]  Masahiro Kinoshita,et al.  Capacity fading of LiAlyNi1−x−yCoxO2 cathode for lithium-ion batteries during accelerated calendar and cycle life tests (effect of depth of discharge in charge–discharge cycling on the suppression of the micro-crack generation of LiAlyNi1−x−yCoxO2 particle) , 2014 .

[8]  Tsutomu Ohzuku,et al.  Characterization of Lithium Insertion Electrodes and Its Verification: Prototype 18650 Batteries Consisting of LTO and LAMO , 2015 .

[9]  Yingchang Yang,et al.  Influences of transition metal on structural and electrochemical properties of Li[NixCoyMnz]O2 (0.6≤x≤0.8) cathode materials for lithium-ion batteries , 2016 .

[10]  Ralph E. White,et al.  Studies on Capacity Fade of Spinel-Based Li-Ion Batteries , 2002 .

[11]  D. Sauer,et al.  Calendar and cycle life study of Li(NiMnCo)O2-based 18650 lithium-ion batteries , 2014 .

[12]  Qiaobao Zhang,et al.  A graphite functional layer covering the surface of LiMn2O4 electrode to improve its electrochemical performance , 2013 .

[13]  L. Mai,et al.  Smart construction of three-dimensional hierarchical tubular transition metal oxide core/shell heterostructures with high-capacity and long-cycle-life lithium storage , 2015 .

[14]  Tingting Zhang,et al.  Synthesis and electrochemical performance of Li3–2xMgxV2(PO4)3/C composite cathode materials for lithium-ion batteries , 2015 .

[15]  Q. Cui,et al.  Effect of surface treatment for aluminum foils on discharge properties of lithium-ion battery , 2014 .

[16]  Haibin Lin,et al.  Study on capacity fading of 18650 type LiCoO2-based lithium ion batteries during storage , 2015, Russian Journal of Physical Chemistry A.

[17]  Qiaobao Zhang,et al.  Three-dimensional hierarchical Co3O4/CuO nanowire heterostructure arrays on nickel foam for high-performance lithium ion batteries , 2014 .

[18]  Ralph E. White,et al.  Capacity Fade Mechanisms and Side Reactions in Lithium‐Ion Batteries , 1998 .

[19]  B. N. Popov,et al.  Studies on Capacity Fade of Lithium-Ion Batteries , 2000 .

[20]  Zhixing Wang,et al.  Synthesis of Ni0.8Co0.1Mn0.1(OH)2 precursor and electrochemical performance of LiNi0.8Co0.1Mn0.1O2 cathode material for lithium batteries , 2015 .

[21]  Zhixing Wang,et al.  Synthesis and performance of LiVPO4F/C-based cathode material for lithium ion battery , 2013 .