Work

Synthesis and Electrochemical Properties of the Li3PO4-Coated LiNi0.5Mn1.5O4 Cathode Materials for High-Voltage Lithium-Ion Batteries

Year: 2025

Type: article

Abstract: High-voltage spinel (LiNi0.5Mn1.5O4; LNMO) has been a prospective cathode material that may exploit the maximal voltage of 5 V for lithium-ion batteries. However, the practical application has been hindered by the severe electrochemical instability of the Ni2+/Ni4+ redox couple at such a high voltage. Herein, we coated lithium phosphate (Li3PO4) on the surface of the LNMO by a wet-coating method to improve the electrochemical stability. The coating layer provided an effective cathode–electrolyte interphase, which prevented the excessive decomposition of the electrolyte on the surface of LNMO cathode. The Li3PO4-coated LNMO exhibited enhanced rate capability in accordance with the lowered solid-electrolyte interphase (SEI) and charge-transfer resistance values from electrochemical impedance spectroscopy.

Source: Energies

DOI: 10.3390/en18133387

Authors: So Young Choi, Jong Hun Sung, Fuead Hasan, Sangram Keshari Mohanty, Madhusudana Koratikere Srinivasa, Hyun Deog Yoo

Institution: Pusan National University

Language: English

Topic: Advancements in Battery Materials

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: gold

Estimated APC paid: $3,137