Multifaceted geometric 3D mesopolytope cathodes and its directional transport gates for superscalable LIB models

Khalifa, H., El-Safty, S.A., Reda, A., Elmarakbi, Ahmed, Metawa, H. and Shenashen, M.A. (2020) Multifaceted geometric 3D mesopolytope cathodes and its directional transport gates for superscalable LIB models. Applied Materials Today, 19. p. 100590. ISSN 2352-9407

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Abstract

In this study, we comprehensively describe the hotkeys of polytope geometrics in terms of heterogeneous and high-index components, surface mobility sites, and hollowness and meso-grooves in potential buildup lithium-ion battery (LIB) designs. We have been fabricated superscalable half-, full-, and large-modulated LIB models by using one dimensional nanorod-like capsules of TiO2@nanocarbon shells (1D-TO@C) as anodes and a diverse range of multifaceted exposure mesopolytopes based 3D-LiFePO4@C (3D-LFPO@C) geometrics as cathodes. Large-scale, multi-functional 3D-LFPO@C polytope cathodes can tailor function of variable LIB model geometrics with a wide range of charging/discharging cycles and excellent energy density. The integration of mesopolytope 3D-LFPO@C cathode and sustainable capsule1D-TO@C anode enables fabrication of superscalable LIB-CR2032 coin-cell models. Our powerful, full-scale LIB-CR2032-coin cell models are attained Coulombic performance efficacy of ∼99.89%, discharge capacity of 93.4% after 2000 cycles, and high specific energy density ≈186.98 Wh kg−1, which overrides the requirement for long-driving range of electric vehicles (EVs). Our finding also indicates that the large-scale pouch LIB model designed with dense packing of LIB-CR2032 coin-cells is technically the first polytope LIB-model that fulfilled the energy storage and tradeoff requirements for EVs.

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