Understanding the mechanism of cycling degradation and novel strategy to stabilize the cycling performance of graphite/LiCoO2 battery at high voltage

Wang, Zaisheng; Rao, Mumin; Li, Jianhui; Ye, Changchun; Liu, Zidan; Xu, Qingshuai; Jin, Xiaojing; Du, Ruian; Xie, Qiming; Luo, Wen; Li, Weishan; Qiu, Yongcai

doi:10.1016/j.jelechem.2019.113411

Cited by 9 publications

(2 citation statements)

References 47 publications

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“…Similarly, the XRD patterns of graphite are presented in Figure b. The fresh graphite electrode has two major diffraction peaks at 26 and 55°, which represent the layered structure of graphite, and a peak at 74° is contributed by the metal Cu . Comparing to the XRD patterns of the fresh graphite anode, the crystal structure of the cycled graphite anode in the electrolyte with HBAG remains almost unchanged, whereas the (002) peak intensity of the graphite anode in the base electrolyte significantly reduces.…”

Section: Resultsmentioning

confidence: 95%

4-Hydroxy-2-Butanesulfonic Acid Gamma-sultone as a Bifunctional Electrolyte Additive for LiCoO₂/Graphite Batteries With Enhanced Performances

Lei

Deng

Zuo

et al. 2021

ACS Appl. Energy Mater.

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To date, enhancing the specific energy of LiCoO 2 /graphite batteries by increasing the cut-off charging voltage through the strategy of adding multifunctional additives in the electrolyte it is still an effective method and research hotspot. In this paper, 4-hydroxy-2-butanesulfonic acid gamma-sultone (HBAG) is demonstrated as an effective bifunctional electrolyte additive to improve the electrochemical performances of 4.4 V LiCoO 2 /graphite batteries. With the addition of 1.0% HBAG in the electrolyte, a capacity retention of 94.88% after 160 cycles can be obtained when the batteries are cycled in the voltage range of 3.0−4.4 V at 25 °C, which is much higher than the batteries with the base electrolyte (54.77%). It is indicated that the HBAG additive in the electrolyte is preferentially decomposed on two electrodes, which facilitates the formation of thin and uniform films on the cathode and anode. In particular, the interface films possess excellent Li + intercalation/deintercalation properties and can prevent further decomposition of the electrolyte, resulting in battery performance improvement. These results indicate that the HBAG-containing electrolyte has promising prospects for application in high-voltage LiCoO 2 /graphite batteries with good performance.

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Section: Resultsmentioning

confidence: 95%

4-Hydroxy-2-Butanesulfonic Acid Gamma-sultone as a Bifunctional Electrolyte Additive for LiCoO₂/Graphite Batteries With Enhanced Performances

Lei

Deng

Zuo

et al. 2021

ACS Appl. Energy Mater.

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“…6e-6h), peak "a" represents a structural change from dilute stage-1L to stage-4L, while peak "b" is constituted by the graphite transition from stage-3L to stage-2L along with the LCO hexagonal-I to hexagonal-I/II phase transition. 50,51 The more subtle peaks "c" and "d" represent the reversible phase transitions of LCO upon delithiation from hexagonal-I/II to hexagonal-II and hexagonal-II to monoclinic, respectively. 52 Comparing the differential capacity plots to those of differential strain, this analysis strongly supports the attribution of strain changes to those of the anode, while the structural changes of the cathode are better captured by noting that the position of peaks "c" and "d" are coincident with the thermal peaks noted previously in Fig.…”

Section: Sohmentioning

confidence: 99%

Towards Long-Term Monitoring of Commercial Lithium-Ion Batteries Enabled by Externally Affixed Fiber Sensors and Strain-Based Prognostic Strategies

Ghashghaie,

Bonefacino,

Cheung

et al. 2024

J. Electrochem. Soc.

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Real-time monitoring of both continuous and spontaneous degradation in lithium-ion batteries is challenging due to the limited number of quantitative metrics available during cycling. In this regard, improved sensing approaches enabled by sensors of high accuracy, precision, and durability are key to achieving comprehensive state estimation and meeting rigorous safety standards. In this work, external temperature and strain monitoring in commercial Li-ion button cells was carried out using tandem pairs of polymer-based and silica-based optical fiber Bragg grating sensors. The decoupled data revealed that the sensors can reliably track strain and temperature evolution for over 500 cycles, as evidenced by periodic patterns with no sign of sensor degradation or loss of fidelity. Moreover, monitoring the strain signal enabled early detection of an anomalous cell over ~60 cycles ahead of an electrochemical signature and abrupt drop in capacity, suggesting that mechanical sensing data may offer unique benefits in some cases. Detailed mechanical monitoring via incremental strain analysis suggests a parallel path toward understanding cell degradation mechanisms, regardless of whether they are continuous or discrete in nature. The accuracy and durability of such a package-level optical fiber sensing platform offer a promising pathway for developing robust real-time battery health monitoring techniques and prognostic strategies

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Five-membered ring systems: with O and S (Se, Te) atoms

Aitken¹

2021

Progress in Heterocyclic Chemistry

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Understanding the mechanism of cycling degradation and novel strategy to stabilize the cycling performance of graphite/LiCoO2 battery at high voltage

Cited by 9 publications

References 47 publications

4-Hydroxy-2-Butanesulfonic Acid Gamma-sultone as a Bifunctional Electrolyte Additive for LiCoO₂/Graphite Batteries With Enhanced Performances

4-Hydroxy-2-Butanesulfonic Acid Gamma-sultone as a Bifunctional Electrolyte Additive for LiCoO₂/Graphite Batteries With Enhanced Performances

Towards Long-Term Monitoring of Commercial Lithium-Ion Batteries Enabled by Externally Affixed Fiber Sensors and Strain-Based Prognostic Strategies

Five-membered ring systems: with O and S (Se, Te) atoms

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Understanding the mechanism of cycling degradation and novel strategy to stabilize the cycling performance of graphite/LiCoO2 battery at high voltage

Cited by 9 publications

References 47 publications

4-Hydroxy-2-Butanesulfonic Acid Gamma-sultone as a Bifunctional Electrolyte Additive for LiCoO2/Graphite Batteries With Enhanced Performances

4-Hydroxy-2-Butanesulfonic Acid Gamma-sultone as a Bifunctional Electrolyte Additive for LiCoO2/Graphite Batteries With Enhanced Performances

Towards Long-Term Monitoring of Commercial Lithium-Ion Batteries Enabled by Externally Affixed Fiber Sensors and Strain-Based Prognostic Strategies

Five-membered ring systems: with O and S (Se, Te) atoms

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4-Hydroxy-2-Butanesulfonic Acid Gamma-sultone as a Bifunctional Electrolyte Additive for LiCoO₂/Graphite Batteries With Enhanced Performances

4-Hydroxy-2-Butanesulfonic Acid Gamma-sultone as a Bifunctional Electrolyte Additive for LiCoO₂/Graphite Batteries With Enhanced Performances