材料科学
锂(药物)
阴极
离子
化学工程
锂离子电池的纳米结构
表征(材料科学)
工程物理
无机化学
纳米技术
阳极
磷酸钒锂电池
电极
物理化学
有机化学
化学
工程类
内分泌学
医学
作者
Büşra Çetin,Zeyneb Camtakan,Neslihan Yuca
标识
DOI:10.1016/j.matlet.2020.127927
摘要
• Li 1.252 Mn 0.557 Ni 0.123 Co 0.126 Al 0.0142 O 2 cathode was synthesized by sol-gel method. • Characterization results of ICP, XRF and INAA are consistent with an error of <10%. • The capacity of Li-rich NMC shows a promising result compared to commercial NMC111. Lithium rich (Li-rich) transition metal oxide cathodes are considered to be among the most promising intercalation cathode materials used for lithium-ion batteries (LIBs) with their high energy density above 900 Wh/kg. Li 1.252 Mn 0.557 Ni 0.123 Co 0.126 Al 0.0142 O 2 layered Li-rich nickel manganese cobalt (NMC) cathode material was synthesized by sol-gel method. This study aims to reveal the superiority of Li-rich cathode material over existing commercial cathodes. The stoichiometric ratio of Li-rich cathode material was confirmed by Inductively Coupled Plasma Mass Spectroscopy (ICP-MS), portable X-ray Fluorescence (pXRF) and Instrumented Neutron Activation Analysis (INAA). Structural and morphological characterization of Li-rich NMC material was examined with X-ray diffraction (XRD) and Scanning Electron Microscopy-Emission with Energy Dispersive Spectroscopy (SEM-EDS). Electrochemical performances of Li-rich NMC and commercial NMC111 cathode materials in coin cell at C/10, C/5 and 1C were investigated. The discharge capacity of Li-rich NMC and NMC111 was found to be 160, 156, 96 mAhg −1 and 153, 120, 72 mAhg −1 at C/10, C/5, 1C, respectively.
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