Solid Thin-Film Battery Using a Densely Packed LiNi0.5Mn1.5O4 Crystal Layer

TL;DR

Researchers developed a high-performance solid-state battery using a densely packed LiNi0.5Mn1.5O4 layer, improving battery efficiency and paving the way for better energy storage.

Contribution

The study demonstrates stable cycling in a solid thin-film battery using densely packed LiNi0.5Mn1.5O4, significantly reducing interface resistance.

Findings

Annealing the battery reduced interface resistance by an order of magnitude.

Densely packed LiNi0.5Mn1.5O4 layers enable stable cycling in solid-state batteries.

The work provides a foundation for all-solid-state Li batteries with high energy density.

Abstract

A 5 V-class LiNi0.5Mn1.5O4 (LNMO)
positive electrode has excellent potential for increasing the energy
density of solid-state Li batteries. In this study, we report the
stable cycling of a solid thin-film Li battery using a densely packed
LNMO crystal layer, which has a high packing density and a well-developed
crystal plane. Annealing a battery reduces the resistance at the interface
of a Li3PO4 solid electrolyte and LNMO for an
order of magnitude, from 5.3 × 102 to 5.7 × 101 Ωcm2, enhancing the battery performance.
This paper lays the groundwork for developing all-solid-state Li batteries
using densely packed LNMO layers.

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