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Insight into the effect of thick graphite electrodes towards high-performance cylindrical Ni-rich NCA90 Li-ion batteries

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Journal of Energy Chemistry 2023年第12期87卷 322-333,I0009页

作者： Nattanon Joraleechanchai Thitiphum Sangsanit Kan Homlamai Purin Krapong Montree Sawangphruk Centre of Excellence for Energy Storage Technology(CEST) Department of Chemical and Biomolecular EngineeringSchool of Energy Science and EngineeringVidyasirimedhi Institute of Science and TechnologyRayong 21210Thailand

This study explored the complex effect of graphite tortuosity on the electrochemical performance of Ni-rich NCA90 Li-ion batteries(LIBs).Different levels of graphite anode tortuosity were analyzed,revealing that low-tortuosity electrodes had better graphite *** in-plane tortuosities of the graphite anode electrodes examined were 1.70,1.94,2.05,and 2.18,while their corresponding through-plane tortuosities were 4.74,6.94,8.19,and ***-operando X-ray diffraction and differential electrochemical mass spectrometry were employed to investigate the charge storage mechanism and gas *** study revealed that while graphite electrode tortuosity impacted the amount of Li present in the lithiated graphite phase due to diffusion constraints,it did not affect gas *** Li-ion utilization in low-tortuosity electrodes was higher than that in high-tortuosity electrodes because of solid-diffusion ***,the galvanostatic intermittent titration technique(GITT) was employed to investigate a lithium-ion diffusion *** results indicate that the lithium-ion diffusion coefficient exhibits a significant difference only during LiC_(6) phase *** also observed that the use of a lower tortuosity electrode leads to improved lithium-ion ***,graphite utilization is influenced by the porous electrode *** tests adhering to UN38.3 guidelines verified battery *** study demonstrated the practical application of optimized NCA90 LIB cells with diverse graphite electrode tortuosities in a high-performance Lamborghini GoKart,paving the way for further advancements in Ni-rich LIB technology.

关键词： Li-ion batteries Tortuosity Ni-rich NCA90 cathode on-line gas detection In-operando XRD

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