Study of the Mechanism of Electrolyte Decomposition and Gas Formation during Operation of Lithium-Ion Batteries | Chapter 5 | Advances and Challenges in Science and Technology Vol. 6

 This paper is the first to find the mechanism of breakdown of the standard electrolyte LP57 (1 M LiPF6 in EC:EMC, 3:7 by weight) and the release of vapor in lithium-ion batteries during their movement, which quantitatively justifies all known exploratory results. It has been demonstrated that the electrolyte decomposes with the release of CO and H2 vapor. While the release of gas CO2 is guide the occurrence of an supplementary chemical reaction betwixt the released CO at the cathode (on account of the decomposition of the electrolyte) accompanying atomic mesh oxygen released from the cathode. Therefore, contingent upon the operating conditions of the artillery (temperature and layoff voltage), the percentage CO2/CO varies from 0.82 to 2.42. It has happened resulted that the accumulation of H2 in the anode element is the cause of its potential-free release during assault cycling.

Author(s) Details:

N. E. Galushkin,
Laboratory of Electrochemical and Hydrogen Energy, Don State Technical University,147 Shevchenko Street, Town of Shakhty, Rostov Region, 346500, Russia.

N. N. Yazvinskaya,
Don State Technical University, 344000 Rostov-on-Don, Rostov Region, Russia.

M. S. Lipkin,
Laboratory of Electrochemical and Hydrogen Energy, Don State Technical University,147 Shevchenko Street, Town of Shakhty, Rostov Region, 346500, Russia.

D. N. Galushkin,
Laboratory of Electrochemical and Hydrogen Energy, Don State Technical University,147 Shevchenko Street, Town of Shakhty, Rostov Region, 346500, Russia.

Please see the link here: https://stm.bookpi.org/ACST-V6/article/view/12132

Determining the Hazards Analysis of Nickel-Rich Lithium-Ion Battery Thermal Runaway under Different States of Charge | Chapter 04 | Novel Perspectives of Engineering Research Vol. 5

 The extended volume plus acceleration calorimeter (EV+-ARC) is used to explore the TR properties of nickel-rich 18650 lithium-ion batteries with the Li[Ni0.8Co0.1Mn0.1]O2 cathode in varied SOC settings. The lithium-ion battery business has been rapidly evolving, with increasing energy density and capacity. However, the subsequent lithium-ion power battery safety incidents have posed a major threat to passengers' personal safety. As a result, greater attention is being paid to lithium-ion battery thermal safety research, such as thermal runaway (TR) mechanism analysis and preventive strategies, and so on. The TR properties of nickel-rich 18650 lithium-ion batteries with Li[Ni0.8Co0.1Mn0.1]O2 cathode in various states of charge (SOC) are investigated using an extended volume plus acceleration calorimeter (EV+-ARC) in this research. Some distinctive parameters from the experiment are selected to examine the influence of SOC on the critical state of TR in order to evaluate the TR features. These parameters include battery voltage, surface temperature, temperature increase rate, and so on. The maximum temperature of the battery surface drops as SOC decreases, however the self-generated heat temperature and TR trigger temperature increase as SOC decreases, as shown in the experiment findings.

Author(S) Details

Kun Jiang
School of Control Science and Engineering, Shandong University, Jinan 250061, China.

Pingwei Gu
School of Control Science and Engineering, Shandong University, Jinan 250061, China.

Peng Huang
School of Control Science and Engineering, Shandong University, Jinan 250061, China.

Ying Zhang
School of Control Science and Engineering, Shandong University, Jinan 250061, China.

Bin Duan
School of Control Science and Engineering, Shandong University, Jinan 250061, China.

Chenghui Zhang
School of Control Science and Engineering, Shandong University, Jinan 250061, China.

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