☆ 4.6 Article

Spray pyrolysis synthesis of nickel-rich layered cathodes LiNi1-2xCoxMnxO2 (x=0.075, 0.05, 0.025) for lithium-ion batteries

JOURNAL OF ENERGY CHEMISTRY (2018)

期刊

JOURNAL OF ENERGY CHEMISTRY

卷 27, 期 2, 页码 447-450

出版社

ELSEVIER SCIENCE BV

DOI: 10.1016/j.jechem.2017.11.025

关键词

Lithium-ion batteries; Nickel-rich layered cathode; Ultrasonic spray pyrolysis; Powder technology; Composite materials

类别

Chemistry, Applied Chemistry, Physical Energy & Fuels Engineering, Chemical

资金

National Basic Research Program of China [2014CB643406]
National Natural Science Foundation of China [51674296, 51704332]
National Postdoctoral Program for Innovative Talents [BX201700290]
Central South University [2017zzts125]

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摘要

In this study we report a series of nickel-rich layered cathodes LiNi1-2xCoxMnxO2 (x = 0.075, 0.05, 0.025) prepared from chlorides solution via ultrasonic spray pyrolysis. SEM images illustrate that the samples are submicron-sized particles and the particle sizes increase with the increase of Ni content. LiNi0.85Co0.075Mn0.075O2 delivers a discharge capacity of 174.9 mAh g(-1) with holding 93% reversible capacity at 1 C after 80 cycles, and can maintain a discharge capacity of 175.3 mAh g(-1) at 5 C rate. With increasing Ni content, the initial specific capacity increases while the cycling and rate performance degrades in some extent. These satisfying results demonstrate that spray pyrolysis is a powerful and efficient synthesis technology for producing Ni-rich layered cathode (Ni content > 80%). (c) 2017 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.

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