Improving the cycling stability and rate capability of LiMn0.5Fe0.5PO4/C nanorod as cathode materials by LiAlO2 modification

Improving the cycling stability and rate capability of LiMn0.5Fe0.5PO4/C nanorod as cathode materials by LiAlO2 modification

LiMn0.5Fe0.5PO4 (LMFP)@C and LMFP@LiAlO2@C nanorods are successfully synthesized by a solvothermal process followed by a calcination at H2/Ar atmosphere. The carbon coating and LiAlO2 coating does not change the morphology and particle size of LMFP, and all samples show nanorod morphology with 50–10...

Full description

Bibliographic Details
Main Authors: Ting-Feng Yi, Ying Li, Zikui Fang, Ping Cui, Shaohua Luo, Ying Xie
Format: Article
Language:English
Published: Elsevier 2020-03-01
Series:Journal of Materiomics
Online Access:http://www.sciencedirect.com/science/article/pii/S235284781930139X
id doaj-7140d115bbbb40698f85d8277135410d
record_format Article
spelling doaj-7140d115bbbb40698f85d8277135410d2020-11-25T02:13:30ZengElsevierJournal of Materiomics2352-84782020-03-01613344Improving the cycling stability and rate capability of LiMn0.5Fe0.5PO4/C nanorod as cathode materials by LiAlO2 modificationTing-Feng Yi0Ying Li1Zikui Fang2Ping Cui3Shaohua Luo4Ying Xie5School of Materials Science and Engineering, Northeastern University, Shenyang, 110819, China; School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, China; Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province, Qinhuangdao, China; Corresponding author. School of Materials Science and Engineering, Northeastern University, Shenyang, 110819, China.School of Materials Science and Engineering, Northeastern University, Shenyang, 110819, China; School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, ChinaSchool of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan, Anhui, 243002, ChinaSchool of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan, Anhui, 243002, ChinaSchool of Materials Science and Engineering, Northeastern University, Shenyang, 110819, China; School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, China; Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province, Qinhuangdao, ChinaKey Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, 150080, China; Corresponding author.LiMn0.5Fe0.5PO4 (LMFP)@C and LMFP@LiAlO2@C nanorods are successfully synthesized by a solvothermal process followed by a calcination at H2/Ar atmosphere. The carbon coating and LiAlO2 coating does not change the morphology and particle size of LMFP, and all samples show nanorod morphology with 50–100 nm in width and 200–300 nm in length. The results show that LiAlO2 coating can offer rapid charge transfer channels with improved intercalation/de-intercalation kinetics of Li ions, which make an outstanding rate capability and cycling stability of as-synthesized LMFP@LiAlO2@C cathodes. As a result, LiAlO2 coating effectively improves the rate capability and cycling stability of LMFP cathode even at high discharge rates. Hence, LMFP@LiAlO2 (5 wt%)@C indicates an outstanding rate performance with a reversible discharge capacity of 137.6 and 113.2 mAh g−1 discharged at 0.05 C and 5 C rates, and the composite also shows a good cycle performance with an excellent capacity of 107 mAh g−1 and 86.4% capacity retention rate at 5 C rate after 100 cycles. Therefore, the LiAlO2 coating can be considered as an effective way to improve the electrochemical properties of LMFP. Keywords: LiAlO2, LiMn0.5Fe0.5PO4, Cycling stability, Cathode material, Li-ion batteryhttp://www.sciencedirect.com/science/article/pii/S235284781930139X
collection DOAJ
language English
format Article
sources DOAJ
author Ting-Feng Yi
Ying Li
Zikui Fang
Ping Cui
Shaohua Luo
Ying Xie
spellingShingle Ting-Feng Yi
Ying Li
Zikui Fang
Ping Cui
Shaohua Luo
Ying Xie
Improving the cycling stability and rate capability of LiMn0.5Fe0.5PO4/C nanorod as cathode materials by LiAlO2 modification
Journal of Materiomics
author_facet Ting-Feng Yi
Ying Li
Zikui Fang
Ping Cui
Shaohua Luo
Ying Xie
author_sort Ting-Feng Yi
title Improving the cycling stability and rate capability of LiMn0.5Fe0.5PO4/C nanorod as cathode materials by LiAlO2 modification
title_short Improving the cycling stability and rate capability of LiMn0.5Fe0.5PO4/C nanorod as cathode materials by LiAlO2 modification
title_full Improving the cycling stability and rate capability of LiMn0.5Fe0.5PO4/C nanorod as cathode materials by LiAlO2 modification
title_fullStr Improving the cycling stability and rate capability of LiMn0.5Fe0.5PO4/C nanorod as cathode materials by LiAlO2 modification
title_full_unstemmed Improving the cycling stability and rate capability of LiMn0.5Fe0.5PO4/C nanorod as cathode materials by LiAlO2 modification
title_sort improving the cycling stability and rate capability of limn0.5fe0.5po4/c nanorod as cathode materials by lialo2 modification
publisher Elsevier
series Journal of Materiomics
issn 2352-8478
publishDate 2020-03-01
description LiMn0.5Fe0.5PO4 (LMFP)@C and LMFP@LiAlO2@C nanorods are successfully synthesized by a solvothermal process followed by a calcination at H2/Ar atmosphere. The carbon coating and LiAlO2 coating does not change the morphology and particle size of LMFP, and all samples show nanorod morphology with 50–100 nm in width and 200–300 nm in length. The results show that LiAlO2 coating can offer rapid charge transfer channels with improved intercalation/de-intercalation kinetics of Li ions, which make an outstanding rate capability and cycling stability of as-synthesized LMFP@LiAlO2@C cathodes. As a result, LiAlO2 coating effectively improves the rate capability and cycling stability of LMFP cathode even at high discharge rates. Hence, LMFP@LiAlO2 (5 wt%)@C indicates an outstanding rate performance with a reversible discharge capacity of 137.6 and 113.2 mAh g−1 discharged at 0.05 C and 5 C rates, and the composite also shows a good cycle performance with an excellent capacity of 107 mAh g−1 and 86.4% capacity retention rate at 5 C rate after 100 cycles. Therefore, the LiAlO2 coating can be considered as an effective way to improve the electrochemical properties of LMFP. Keywords: LiAlO2, LiMn0.5Fe0.5PO4, Cycling stability, Cathode material, Li-ion battery
url http://www.sciencedirect.com/science/article/pii/S235284781930139X
work_keys_str_mv AT tingfengyi improvingthecyclingstabilityandratecapabilityoflimn05fe05po4cnanorodascathodematerialsbylialo2modification
AT yingli improvingthecyclingstabilityandratecapabilityoflimn05fe05po4cnanorodascathodematerialsbylialo2modification
AT zikuifang improvingthecyclingstabilityandratecapabilityoflimn05fe05po4cnanorodascathodematerialsbylialo2modification
AT pingcui improvingthecyclingstabilityandratecapabilityoflimn05fe05po4cnanorodascathodematerialsbylialo2modification
AT shaohualuo improvingthecyclingstabilityandratecapabilityoflimn05fe05po4cnanorodascathodematerialsbylialo2modification
AT yingxie improvingthecyclingstabilityandratecapabilityoflimn05fe05po4cnanorodascathodematerialsbylialo2modification
_version_ 1724904831977521152

Similar Items