The effect of elevated temperature on the accelerated aging of LiCoO2/mesocarbon microbeads batteries

Guan, Ting; Shu, Sun; Gao, Yunzhi; Du, Chunyu; Cui, Yingzhi; Zhang, Lingling; Yin, Geping

doi:10.1016/j.apenergy.2016.05.101

Cited by 49 publications

(27 citation statements)

References 51 publications

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“…In addition to determining the cost, safety, specific energy, power, and reliability issues, lifetime prediction for LIBs under real operating conditions is a major step for dependable integration of LIBs into vehicles and stationary applications and to eliminate warranty issues. Accelerated aging tests have been regarded as a powerful alternative to replace the cost‐ and time‐intensive aging tests under real‐life operating conditions . However, many experiments still needs to be performed to obtain the maximum operating conditions at which the aging test can be conducted without altering the decay mechanisms.…”

Section: Introductionsupporting

confidence: 71%

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Time‐Effective Accelerated Cyclic Aging Analysis of Lithium‐Ion Batteries

et al. 2019

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We propose a time-effective framework for accelerated cyclic aging analysis of lithium-ion batteries. The proposed framework involves the coupling of a physico-chemical capacity-fade model that considers the cyclic aging mechanisms of the LiMn 2 O 4 /graphite cell, with a physics-based porous-composite electrode model to predict cycling performance at different temperatures. A one-dimensional simple empirical life model is then developed from the coupled physico-chemical capacityfade model and the physics-based porous-composite electrode model predictions. An accelerated cyclic aging analysis based on the principle of time-temperature superposition is performed using the developed one-dimensional simple life empirical model. The proposed framework is used to predict the maximum number of cycles and the highest temperature required for accelerated cyclic aging analysis of LiMn 2 O 4 /graphite cells. The efficacy of the proposed framework is validated with experimental cycle-performance data obtained from LiMn 2 O 4 /graphite coin cells at 25 and 60°C.

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Section: Introductionsupporting

confidence: 71%

“…The concept of using temperature as a stress factor for an accelerated aging test has been employed in previous works . However, most of these previous works concentrate on studying the effect of temperature on the capacity‐fading mechanism of the particular cell chemistry being used.…”

Section: Introductionmentioning

confidence: 99%

Time‐Effective Accelerated Cyclic Aging Analysis of Lithium‐Ion Batteries

et al. 2019

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“…Generally, the relationship between the cycling time and the capacity loss of lithium ion battery could be expressed by the Arrhenius equation shown as Equation (1) . In this work, all the tests are conducted at room temperature, which means that the absolute temperature is not changed.…”

Section: Resultsmentioning

confidence: 99%

Accelerated Aging Analysis on Cycle Life of LiFePO₄/Graphite Batteries Based on Different Rates

et al. 2018

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In this study, different charge/discharge rates (1/3C, 1C, 1.5C, 1.8C, 2.0C and 2.5C) are used to accelerate the aging of commercial LiFePO4/graphite cells. The capacity attenuation mechanism is investigated by disassembling the aged full cells and analyzing the morphologies and chemical composition of electrode surfaces, the single electrode potentials, and so forth, when the capacity retention of full cell decays to 95 %, 90 %, 85 %, and 80 %. Through the tests, the capacity fade of the full cell is mainly ascribed to the irreversible loss of active lithium. However, when the test rate is not lower than 2.0C, the dominant mechanism for consumption of active lithium is changed to lithium deposition on the anode during the charging process instead of the generation of SEI film. As a consequence, the capacity decay rate at 2.0C or 2.5C is accelerated to a large degree. The capacity loss with cycling time is fitted by Arrhenius equations. The pre‐exponential factor at a given rate (Arate) increases linearly with the rising test rate when it is not more than 1.8C, and this corresponds to the results of disassembly analysis. Therefore, an unknown Arate in a reasonable range can be extrapolated by the data of other Arate values at relatively high rates. In addition, the calculated Arate after 10 % capacity loss can be used to replace the fitted value by the whole aging data. This provides a rapid and practical approach to estimate the lifetime of the full cell.

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“…29,30 In order to evaluate the intrinsic capacity of electrode materials, the LiFePO 4 /Li and the graphite/Li halfcells were tested at 0.02C, for the effect of polarization due to the test current can be basically ignored. The change in capacities tested at 0.02C are mainly attributed to the structure degradation.…”

Section: The Performance Of Single Electrodesmentioning

confidence: 99%

Accelerated aging and degradation mechanism of LiFePO₄/graphite batteries cycled at high discharge rates

et al. 2018

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The effects of discharge rates (0.5C, 1.0C, 2.0C, 3.0C, 4.0C and 5.0C) on the aging of LiFePO 4 /graphite full cells are researched by disassembling the fresh and aged full cells. The capacity degradation mechanism is analyzed via electrochemical performance, surface morphologies and compositions, and the structure of the anode and cathode electrodes. The capacity fade is accelerated with increasing discharge rates. The irreversible loss of active lithium due to the generation of an SEI film is the primary aging factor for the full cells cycled at low discharge rates. However, when the discharge rate is greater than or equal to 4.0C, the performance degradation of the LiFePO 4 electrode is distinct due to structure decay, which is caused by quick and repeated intercalation of lithium ions and elevated temperature during discharging.In addition, the SEI film on the anode tends to be unstable after the rapid extraction of lithium ions at high discharge rates, and this enhances the loss of active lithium. Therefore, it is indicated that the degradation mechanism is changed for the full cells aged at 4.0C and 5.0C. Besides, the high discharge rate also increases the internal resistance of the full cell, which is detrimental to high rate discharge performance.

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The effect of elevated temperature on the accelerated aging of LiCoO2/mesocarbon microbeads batteries

Cited by 49 publications

References 51 publications

Time‐Effective Accelerated Cyclic Aging Analysis of Lithium‐Ion Batteries

Time‐Effective Accelerated Cyclic Aging Analysis of Lithium‐Ion Batteries

Accelerated Aging Analysis on Cycle Life of LiFePO₄/Graphite Batteries Based on Different Rates

Accelerated aging and degradation mechanism of LiFePO₄/graphite batteries cycled at high discharge rates

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The effect of elevated temperature on the accelerated aging of LiCoO2/mesocarbon microbeads batteries

Cited by 49 publications

References 51 publications

Time‐Effective Accelerated Cyclic Aging Analysis of Lithium‐Ion Batteries

Time‐Effective Accelerated Cyclic Aging Analysis of Lithium‐Ion Batteries

Accelerated Aging Analysis on Cycle Life of LiFePO4/Graphite Batteries Based on Different Rates

Accelerated aging and degradation mechanism of LiFePO4/graphite batteries cycled at high discharge rates

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Product

Resources

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Accelerated Aging Analysis on Cycle Life of LiFePO₄/Graphite Batteries Based on Different Rates

Accelerated aging and degradation mechanism of LiFePO₄/graphite batteries cycled at high discharge rates