Strain engineering of two-dimensional multilayered heterostructures for beyond-lithium-based rechargeable batteries.

ABSTRACT: Beyond-lithium-ion batteries are promising candidates for high-energy-density, low-cost and large-scale energy storage applications. However, the main challenge lies in the development of suitable electrode materials. Here, we demonstrate a new type of zero-strain cathode for reversible intercalation of beyond-Li⁺ ions (Na⁺, K⁺, Zn²⁺, Al³⁺) through interface strain engineering of a 2D multilayered VOPO₄-graphene heterostructure. In-situ characterization and theoretical calculations reveal a reversible intercalation mechanism of cations in the 2D multilayered heterostructure with a negligible volume change. When applied as cathodes in K⁺-ion batteries, we achieve a high specific capacity of 160 mA h g^-1

SUBMITTER: Xiong P 

PROVIDER: S-EPMC7335097 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature