The origin of impedance rise in Ni-Rich positive electrodes for lithium-ion batteries

نویسندگان

چکیده

The cycling performance of nickel-rich lithium nickel cobalt manganese oxide (NMC) electrodes in Li-ion batteries (LIBs) partially depends on the control kinetics degradation processes that result impedance rise. contribution from surface film formation at NMC/electrolyte interfaces is highly dependent initial chemical composition and structure NMC surfaces. Through comparison quantity electrochemical composite made pristine- treated-NMC materials, we are able to demonstrate a simple treatment suppressed subsequent reduced rise Li/NMC half-cells during cycling. Detailed modelling factors affecting cell provide further insights index individual interphase resistance, highlighting underlying positive effects proposed treatment, demonstrating importance homogeneous, electronically conducting matrices throughout electrode.

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ژورنال

عنوان ژورنال: Journal of Power Sources

سال: 2021

ISSN: ['1873-2755', '0378-7753']

DOI: https://doi.org/10.1016/j.jpowsour.2021.229885