Modeling Self Discharge Capacity Loss of the Anode in a Lithium ion Cell

2005 ◽  
Keyword(s):  
Discharge Capacity ◽  
Lithium Ion ◽  
Capacity Loss ◽  
Lithium Ion Cell

Synthesis and Electrochemical Properties of Cathode Material LiNi0.8Co0.1Mn0.1O2 via Li, Mg, Al Dopping

2014 ◽  
Vol 1058 ◽  
pp. 302-306 ◽  
Author(s):  
Sha Yuan ◽  
Liang Bin Liu ◽  
Yan Ping Tang ◽  
Jian Hua Wang ◽  
Yu Zhong Guo
Keyword(s):  
Cathode Material ◽  
Electrochemical Properties ◽  
Discharge Capacity ◽  
High Efficiency ◽  
Lithium Ion ◽  
Initial Discharge Capacity ◽  
Capacity Loss ◽  
Initial Discharge ◽  
Result Show ◽  
Properties Of Materials

Coprecipitation method is adopted to prepare LiNi0.8Co0.1Mn0.1O2, to discuss the factors of affecting electrochemical properties and structure at lithium ion battery cathode material LiNi0.8Co0.1Mn0.1O2. In order to improve the electrochemical properties of materials, LiNi0.8Co0.1Mn0.1O2 materials were modified by doping the cation of Li or Mg or Al. Through the charge-discharge tests in the range of 2.5~4.3V, the result show that doped Mg samples with a discharge capacity and high efficiency as well as the lowest capacity loss, the initial discharge capacity is 205.9mA.h/g, after 20 cycles the discharge capacity reached 142.4mA.h/g.

scholarly journals A Comparison of Lithium-Ion Cell Performance across Three Different Cell Formats

Batteries ◽  
2021 ◽  
Vol 7 (2) ◽  
pp. 38
Author(s):  
Grace Bridgewater ◽  
Matthew J. Capener ◽  
James Brandon ◽  
Michael J. Lain ◽  
Mark Copley ◽  
...  
Keyword(s):  
Degradation Mechanism ◽  
Single Layer ◽  
Lithium Ion ◽  
Capacity Loss ◽  
Lithium Ion Cells ◽  
Lithium Ion Cell ◽  
A Cell ◽  
The Difference ◽  
Discharge Capacities

To investigate the influence of cell formats during a cell development programme, lithium-ion cells have been prepared in three different formats. Coin cells, single layer pouch cells, and stacked pouch cells gave a range of scales of almost three orders of magnitude. The cells used the same electrode coatings, electrolyte and separator. The performance of the different formats was compared in long term cycling tests and in measurements of resistance and discharge capacities at different rates. Some test results were common to all three formats. However, the stacked pouch cells had higher discharge capacities at higher rates. During cycling tests, there were indications of differences in the predominant degradation mechanism between the stacked cells and the other two cell formats. The stacked cells showed faster resistance increases, whereas the coin cells showed faster capacity loss. The difference in degradation mechanism can be linked to the different thermal and mechanical environments in the three cell formats. The correlation in the electrochemical performance between coin cells, single layer pouch cells, and stacked pouch cells shows that developments within a single cell format are likely to lead to improvements across all cell formats.

scholarly journals Comparative Study on the Calendar Aging Behavior of Six Different Lithium-Ion Cell Chemistries in Terms of Parameter Variation

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3358
Author(s):  
Christian Geisbauer ◽  
Katharina Wöhrl ◽  
Daniel Koch ◽  
Gudrun Wilhelm ◽  
Gerhard Schneider ◽  
...  
Keyword(s):  
Open Circuit Voltage ◽  
Lithium Ion ◽  
Aging Effect ◽  
Open Circuit ◽  
Capacity Loss ◽  
Lithium Ion Cells ◽  
Lithium Ion Cell ◽  
Capacity Degradation ◽  
Aging Conditions ◽  
Stationary Conditions

The degradation of lithium-ion cells is an important aspect, not only for quality management, but also for the customer of the application like, e.g., scooters or electric vehicles. During the lifetime of the system, the overall health on the battery plays a key role in its depreciation. Therefore, it is necessary to monitor the health of the battery during operation, i.e., cycle life, but also during stationary conditions, i.e., calendar aging. In this work, the degradation due to calendar aging is analyzed for six different cell chemistries in terms of capacity degradation and impedance increase and their performance are being compared. In a new proposed metric, the relative deviations between various cells with the exact identical aging history are being analyzed for their degradation effects and their differences, which stands out in comparison to similar research. The capacity loss was found to be most drastic at 60 °C and at higher storage voltages, even for titanate-oxide cells. LiNiMnCoO2 (NMC), LiNiCoAlO2 (NCA) and Li2TiO3 (LTO) cells at 60 °C showed the most drastic capacity decrease. NMC and NCA cells at 60 °C and highest storage voltage did not show any open circuit voltage, as their current interrupt mechanism triggered. The effect of aging shows no uniform impact on the changes in the capacity variance when comparing different aging conditions, with respect to the evaluated standard deviation for all cells. The focus of this work was on the calendar aging effect and may be supplemented in a second study for cyclic aging.

Electrochemical Studies on Al2O3-Coated Spinel LiMn2O4 for Lithium Ion Batteries

2011 ◽  
Vol 675-677 ◽  
pp. 37-40
Author(s):  
Ying Bai ◽  
Chuan Wu ◽  
Feng Wu ◽  
Bo Rong Wu ◽  
Shi Chen
Keyword(s):  
Discharge Capacity ◽  
Chemical Deposition ◽  
Lithium Ion ◽  
Heat Treating ◽  
Thin Layers ◽  
Electrochemical Performances ◽  
Capacity Loss ◽  
Heat Treated ◽  
Chemical Deposition Method

Spinel LiMn2O4 was synthesized via a solid state reaction, and modified with Al2O3 thin layers by a chemical deposition method. The electrochemical performances of the as-prepared samples were investigated with cyclic voltammetry (CV) and charge-discharge test. It is found that the Al2O3-coated LiMn2O4 help dramatically retaining the discharge capacity upon long-term cycling. The influences of the heat-treating temperature and the coating amount are discussed and compared. The optimized sample is 1% Al2O3/ LiMn2O4 heat-treated at 500oC, which has an initial discharge capacity of 116mAh/g, and a very slight capacity loss of 1.7% at the 50th cycle.

A Computational Framework for Lithium Ion Cell-Level Model Predictive Control Using a Physics-Based Reduced-Order Model

2021 ◽  
Vol 5 (4) ◽  
pp. 1387-1392
Author(s):  
Marcelo A. Xavier ◽  
Aloisio K. de Souza ◽  
Kiana Karami ◽  
Gregory L. Plett ◽  
M. Scott Trimboli
Keyword(s):  
Model Predictive Control ◽  
Predictive Control ◽  
Lithium Ion ◽  
Reduced Order Model ◽  
Order Model ◽  
Cell Level ◽  
Computational Framework ◽  
Reduced Order ◽  
Lithium Ion Cell ◽  
Level Model

Post-lithium-ion battery cell production and its compatibility with lithium-ion cell production infrastructure

Nature Energy ◽  
2021 ◽  
Vol 6 (2) ◽  
pp. 123-134
Author(s):  
Fabian Duffner ◽  
Niklas Kronemeyer ◽  
Jens Tübke ◽  
Jens Leker ◽  
Martin Winter ◽  
...  
Keyword(s):  
Lithium Ion Battery ◽  
Lithium Ion ◽  
Battery Cell ◽  
Cell Production ◽  
Lithium Ion Cell

scholarly journals Microwave-Assisted Synthesis of Ge/GeO2-Reduced Graphene Oxide Nanocomposite with Enhanced Discharge Capacity for Lithium-Ion Batteries

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 319
Author(s):  
Ji-Hye Koo ◽  
Seung-Min Paek
Keyword(s):  
Discharge Capacity ◽  
Graphene Nanosheets ◽  
Lithium Ion ◽  
Microwave Assisted Synthesis ◽  
Graphene Composite ◽  
Transmission Electron ◽  
Reduced Graphene ◽  
Significant Research ◽  
Long Term Performance ◽  
Term Performance

Germanium/germanium oxide nanoparticles with theoretically high discharge capacities of 1624 and 2152 mAh/g have attracted significant research interest for their potential application as anode materials in Li-ion batteries. However, these materials exhibit poor long-term performance due to the large volume change of 370% during charge/discharge cycles. In the present study, to overcome this shortcoming, a Ge/GeO2/graphene composite material was synthesized. Ge/GeO2 nanoparticles were trapped between matrices of graphene nanosheets to offset the volume expansion effect. Transmission electron microscopy images revealed that the Ge/GeO2 nanoparticles were distributed on the graphene nanosheets. Discharge/charge experiments were performed to evaluate the Li storage properties of the samples. The discharge capacity of the bare Ge/GeO2 nanoparticles in the first discharge cycle was considerably large; however, the value decreased rapidly with successive cycles. Conversely, the present Ge/GeO2/graphene composite exhibited superior cycling stability.

Thermal runaway in a prismatic lithium ion cell triggered by a short circuit

2021 ◽  
Vol 40 ◽  
pp. 102737
Author(s):  
Malcolm P. Macdonald ◽  
Sriram Chandrasekaran ◽  
Srinivas Garimella ◽  
Thomas F. Fuller
Keyword(s):  
Short Circuit ◽  
Lithium Ion ◽  
Thermal Runaway ◽  
Lithium Ion Cell
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