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Solvothermal Synthesis of a Hollow Micro-Sphere LiFePO(4)/C Composite with a Porous Interior Structure as a Cathode Material for Lithium Ion Batteries

To overcome the low lithium ion diffusion and slow electron transfer, a hollow micro sphere LiFePO(4)/C cathode material with a porous interior structure was synthesized via a solvothermal method by using ethylene glycol (EG) as the solvent medium and cetyltrimethylammonium bromide (CTAB) as the sur...

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Autores principales: Liu, Yang, Zhang, Jieyu, Li, Ying, Hu, Yemin, Li, Wenxian, Zhu, Mingyuan, Hu, Pengfei, Chou, Shulei, Wang, Guoxiu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5707585/
https://www.ncbi.nlm.nih.gov/pubmed/29099814
http://dx.doi.org/10.3390/nano7110368
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author Liu, Yang
Zhang, Jieyu
Li, Ying
Hu, Yemin
Li, Wenxian
Zhu, Mingyuan
Hu, Pengfei
Chou, Shulei
Wang, Guoxiu
author_facet Liu, Yang
Zhang, Jieyu
Li, Ying
Hu, Yemin
Li, Wenxian
Zhu, Mingyuan
Hu, Pengfei
Chou, Shulei
Wang, Guoxiu
author_sort Liu, Yang
collection PubMed
description To overcome the low lithium ion diffusion and slow electron transfer, a hollow micro sphere LiFePO(4)/C cathode material with a porous interior structure was synthesized via a solvothermal method by using ethylene glycol (EG) as the solvent medium and cetyltrimethylammonium bromide (CTAB) as the surfactant. In this strategy, the EG solvent inhibits the growth of the crystals and the CTAB surfactant boots the self-assembly of the primary nanoparticles to form hollow spheres. The resultant carbon-coat LiFePO(4)/C hollow micro-spheres have a ~300 nm thick shell/wall consisting of aggregated nanoparticles and a porous interior. When used as materials for lithium-ion batteries, the hollow micro spherical LiFePO(4)/C composite exhibits superior discharge capacity (163 mAh g(−1) at 0.1 C), good high-rate discharge capacity (118 mAh g(−1) at 10 C), and fine cycling stability (99.2% after 200 cycles at 0.1 C). The good electrochemical performances are attributed to a high rate of ionic/electronic conduction and the high structural stability arising from the nanosized primary particles and the micro-sized hollow spherical structure.
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spelling pubmed-57075852017-12-05 Solvothermal Synthesis of a Hollow Micro-Sphere LiFePO(4)/C Composite with a Porous Interior Structure as a Cathode Material for Lithium Ion Batteries Liu, Yang Zhang, Jieyu Li, Ying Hu, Yemin Li, Wenxian Zhu, Mingyuan Hu, Pengfei Chou, Shulei Wang, Guoxiu Nanomaterials (Basel) Article To overcome the low lithium ion diffusion and slow electron transfer, a hollow micro sphere LiFePO(4)/C cathode material with a porous interior structure was synthesized via a solvothermal method by using ethylene glycol (EG) as the solvent medium and cetyltrimethylammonium bromide (CTAB) as the surfactant. In this strategy, the EG solvent inhibits the growth of the crystals and the CTAB surfactant boots the self-assembly of the primary nanoparticles to form hollow spheres. The resultant carbon-coat LiFePO(4)/C hollow micro-spheres have a ~300 nm thick shell/wall consisting of aggregated nanoparticles and a porous interior. When used as materials for lithium-ion batteries, the hollow micro spherical LiFePO(4)/C composite exhibits superior discharge capacity (163 mAh g(−1) at 0.1 C), good high-rate discharge capacity (118 mAh g(−1) at 10 C), and fine cycling stability (99.2% after 200 cycles at 0.1 C). The good electrochemical performances are attributed to a high rate of ionic/electronic conduction and the high structural stability arising from the nanosized primary particles and the micro-sized hollow spherical structure. MDPI 2017-11-03 /pmc/articles/PMC5707585/ /pubmed/29099814 http://dx.doi.org/10.3390/nano7110368 Text en © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Liu, Yang
Zhang, Jieyu
Li, Ying
Hu, Yemin
Li, Wenxian
Zhu, Mingyuan
Hu, Pengfei
Chou, Shulei
Wang, Guoxiu
Solvothermal Synthesis of a Hollow Micro-Sphere LiFePO(4)/C Composite with a Porous Interior Structure as a Cathode Material for Lithium Ion Batteries
title Solvothermal Synthesis of a Hollow Micro-Sphere LiFePO(4)/C Composite with a Porous Interior Structure as a Cathode Material for Lithium Ion Batteries
title_full Solvothermal Synthesis of a Hollow Micro-Sphere LiFePO(4)/C Composite with a Porous Interior Structure as a Cathode Material for Lithium Ion Batteries
title_fullStr Solvothermal Synthesis of a Hollow Micro-Sphere LiFePO(4)/C Composite with a Porous Interior Structure as a Cathode Material for Lithium Ion Batteries
title_full_unstemmed Solvothermal Synthesis of a Hollow Micro-Sphere LiFePO(4)/C Composite with a Porous Interior Structure as a Cathode Material for Lithium Ion Batteries
title_short Solvothermal Synthesis of a Hollow Micro-Sphere LiFePO(4)/C Composite with a Porous Interior Structure as a Cathode Material for Lithium Ion Batteries
title_sort solvothermal synthesis of a hollow micro-sphere lifepo(4)/c composite with a porous interior structure as a cathode material for lithium ion batteries
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5707585/
https://www.ncbi.nlm.nih.gov/pubmed/29099814
http://dx.doi.org/10.3390/nano7110368
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