ICEVT 2019 Conference

Effect of NaTi2(PO4)3 Coating on Li1,13Ni0,2Co0,2Mn0,47O2 for Higher Capacity Retention
Jotti Karunawan(a), Muhammad Alief Irham(a), Putu Hendra(a), Octia Floweri(b), Akfiny H. Aimon(a)(c), Ferry Iskandar(a*)(b)(c)

(a) Department of Physics, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung (ITB), Jl. Ganesha 10 Bandung, 40132, Indonesia
(b) Research Center for Nanosciences and Nanotechnology (RCNN), Institut Teknologi Bandung (ITB), Jl. Ganesha 10 Bandung, 40132, Indonesia
(c) National Center for Sustainable Transportation Technology (NCSTT) , Institut Teknologi Bandung (ITB), Jl. Ganesha 10 Bandung, 40132, Indonesia
*ferry[at]fi.itb.ac.id


Abstract

LiNixMnyCozO2 (LNCM) with a high Li content (Li-rich LNCM) is a promising new type of cathode material for lithium ion battery (LIB) application. Li-rich LNCM has been reported to deliver higher specific capacity (>250 mAh/g) compared to LNCM cathode with standard Li content. Despite its outstanding performance, some works have reported instability of the material upon cycling. Many researchers have been suggesting the use of carbon, oxide, fluoride, and phosphate compounds as a coating material to improve its stability. In this work, Li1.2Ni0.64Co0.08Mn0.08 (LNCM811), a type of Li-rich LNCM cathode, was successfully synthesized via hydroxide co-precipitation method. The resulted product was then coated with NaTi2(PO4)3 (NTP), a promising phosphate compound with excellent chemical stability and superior ionic conductivity. It was found that NTP-coated LNCM811 delivered better electrochemical properties compared to the pristine one, as was determined using Electrochemical Impedance Spectroscopy (EIS).

Keywords: Lithium ion battery (LIB), LNCM cathode, Li-rich LNCM, surface coating, NaTi_2(PO_4)_3

Topic: Battery Technology and Management System

Link: https://ifory.id/abstract-plain/wCGegkMAb9Fz

Web Format | Corresponding Author (Muhammad Alief Irham)