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Suppressing Fe–Li Antisite Defects in LiFePO4/Carbon Hybrid Microtube to Enhance the Lithium Ion Storage

Suppressing Fe–Li Antisite Defects in LiFePO4/Carbon Hybrid Microtube to Enhance the Lithium Ion... CommuniCtion www.advenergymat.de www.MaterialsViews.com Suppressing Fe–Li Antisite Defects in LiFePO /Carbon Hybrid Microtube to Enhance the Lithium Ion Storage Yihui Zou, Shuai Chen, Xianfeng Yang, Na Ma, Yanzhi Xia, Dongjiang Yang,* and Shaojun Guo* Olive structured LiFePO (LFP) is a good candidate for lithium- ethanol) were found to play an important role in reducing the ion battery (LIB) cathode material due to its high theoretical concentration of Fe–Li antisite defects. However, the concen- −1 capacity of 170 mAh g , high electrochemical potential, good tration of Fe–Li antisite defects reduced is still limited (higher thermal stability, environmental friendliness, and nontox- than 0.99%), which cannot improve the rate performance of [1–3] + [9,10] icity. However, the low Li ion diffusion rate in the LFP LIB efficiently. leads to the poor rate performance for LIB. The problem of low Herein, we report on the synthesis of an ideal crystalline Li ion diffusion rate stems from its sole diffusion pathway, LFP/carbon hybrid microtube (LFP/CMT) with the lowest that is, the diffusion of Li ions is only along the preferen- Fe–Li antisite defects reported (<0.3%) to boost the lithium tial [010] channel of LFP. Unfortunately, 1D channel is easily ion storage. The key concept http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Advanced Energy Materials Wiley

Suppressing Fe–Li Antisite Defects in LiFePO4/Carbon Hybrid Microtube to Enhance the Lithium Ion Storage

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References (33)

Publisher
Wiley
Copyright
Copyright © 2016 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim
ISSN
1614-6832
eISSN
1614-6840
DOI
10.1002/aenm.201601549
Publisher site
See Article on Publisher Site

Abstract

CommuniCtion www.advenergymat.de www.MaterialsViews.com Suppressing Fe–Li Antisite Defects in LiFePO /Carbon Hybrid Microtube to Enhance the Lithium Ion Storage Yihui Zou, Shuai Chen, Xianfeng Yang, Na Ma, Yanzhi Xia, Dongjiang Yang,* and Shaojun Guo* Olive structured LiFePO (LFP) is a good candidate for lithium- ethanol) were found to play an important role in reducing the ion battery (LIB) cathode material due to its high theoretical concentration of Fe–Li antisite defects. However, the concen- −1 capacity of 170 mAh g , high electrochemical potential, good tration of Fe–Li antisite defects reduced is still limited (higher thermal stability, environmental friendliness, and nontox- than 0.99%), which cannot improve the rate performance of [1–3] + [9,10] icity. However, the low Li ion diffusion rate in the LFP LIB efficiently. leads to the poor rate performance for LIB. The problem of low Herein, we report on the synthesis of an ideal crystalline Li ion diffusion rate stems from its sole diffusion pathway, LFP/carbon hybrid microtube (LFP/CMT) with the lowest that is, the diffusion of Li ions is only along the preferen- Fe–Li antisite defects reported (<0.3%) to boost the lithium tial [010] channel of LFP. Unfortunately, 1D channel is easily ion storage. The key concept

Journal

Advanced Energy Materials – Wiley

Published: Dec 1, 2016

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