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DOE OSTI · 1969442

Co-Free Cathode Materials and Their Novel Architectures

Meng, Ying Shirley·Manthiram, Arumugam·Battaglia, Vincent·Duong, Hieu
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Abstract

To enable cobalt-free LiNi 0.5 Mn 1.5 O 4 (LNMO) electrode and novel electrolyte formulation for use in next-generation Li-ion batteries (LIB) capable of high energy density, long cycle life and low cost, several methods were developed throughout this project. To enhance the performance of LNMO, Fe-doping on LNMO, laser treatment and atomic layer deposition (ALD) were adopted. Moreover, dry electrode method has successfully helped to fabricate ultra-high loading LNMO with stable performance. The improvement at anode side includes ALD-coating as well as pre-lithiation of graphite anode. In the novel electrolyte development, it was found that all-fluorinated electrolyte with appropriate additives can effectively extend both cycle and calendar life of LNMO full cells at practical loadings. Additional diagnosis of LNMO full cells showed that different types of carbon and porosity of separator play a critical role in the success of LNMO’s high voltage operation. The combined effort throughout the project pushed forward the understanding and commercialization of LNMO at practical level.

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Meng, Ying Shirley, Manthiram, Arumugam, Battaglia, Vincent, Duong, Hieu. 2022-12-30. Co-Free Cathode Materials and Their Novel Architectures. https://doi.org/10.2172/1969442

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