A novel synthetic route for LiFePO4/C cathode materials by addition of starch for lithium-ion batteries

Luo, Shao Hua; Tang, Zi Long; Zhang, Zhong Tai

doi:10.1016/j.cclet.2006.12.041

Cited by 18 publications

(2 citation statements)

References 9 publications

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“…Carbon-coated is an effective method to improve the dynamic performance of electrode material [2,3] . Moreover, carbon powder directly or sucrose [4] , polystyrene (PS) [5] , Vitamin C (namely Ascorbic Acid) [6] as a carbon source, using the polyvinyl alcohol (PVA) [7] as the reducing agent, I. Belharouak, et.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Synthesis Condition for LiFePO<sub>4</sub>/C Cathode Material

Zhu

Han

Cao

2011

AMR

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This template explains and demonstrates how to prepare your camera-ready paper for Trans Tech Publications. The best is to read these instructions and follow the outline of this text. Common and cheap organic matters (Glucose anhydrous, Citric acid, Vitamin C, Sucrose) were selected for carbon coatings on LiFePO4. The four pre-treatment processes were employed to optimize the carbon coating process, and through solid state-carbothermal reduction synthesis of LiFePO4/C composites. The structure, morphology and electrochemical performance of the material were studied by XRD, SEM and galvanostatic charge-discharge methods. It is observed that the tap density of citric acid coating material can reach 1.44 g/ml. Conductivity increased four orders of magnitude. At room temperature, the initial discharge specific capacity of the materials is as high as 89.6 mAh/g at 5.0 C (corresponding to 850 mA/g). After 30 cycles, the capacity is 83.9 mAh/g and decay only 2.0 %.

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Section: Introductionmentioning

confidence: 99%

Optimization of Synthesis Condition for LiFePO<sub>4</sub>/C Cathode Material

Zhu

Han

Cao

2011

AMR

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“…However, the key drawback limiting its practical application is its low intrinsic electronic and ionic conductivity. People have employed various methods to solve the problems, in-*Corrsponding author (email: houxh5697@163.com) cluding the synthesis of LiFePO 4 /C conductive carbon composite [7][8][9], the addition of dispersed metal powders and doping with cation in Fe-sites [10][11][12]. All these methods have improved its electronic conductivity and its electrochemical properties to some extent.…”

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confidence: 99%

First principles studies on the electronics structures of (Li1−x Me x )FePO4 (Me=Na and Be)

Hou

2010

Chin. Sci. Bull.

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Based on density functional theory (DFT) of the first-principle for cathode materials of lithium ion battery, the electronic structures of (Li 1-x Me x )FePO 4 (Me=Na and Be, x=0-0.40) are calculated by plane wave pseudo-potential method using Cambridge serial total energy package (CASTEP) program. The calculated results show that Li-site doping can improve the electronic conductivity enormously. Doping with Na has a noticeable effect on improving its electrical conductivity. However, serious structural distortion will occur when its doping density is beyond 0.25. In view of this, the best density of doping Na is less than 0.25. Doping with Be has an inconspicuous effect on increasing its electrical conductivity and has good cyclical stability, but it cannot achieve as good results as when it is doped with Na. Therefore we cannot find a middle ground between the two proposals. Considering cost and environmental protection, it is ideal to choose Na. So this method gives a reasonable prediction to the improvement of electronic conductivity through Li-site doping in LiFePO 4 material. lithium ion battery, LiFePO 4 , first-principle, electronic structure Citation:Hou X H, Hu S J. First principles studies on the electronics structures of (Li 1−x Me x )FePO 4 (Me=Na and Be).

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Scalable Preparation of LiFePO₄/C Nanocomposites with sp²‐Coordinated Carbon Coating as High‐Performance Cathode Materials for Lithium‐Ion Batteries

Kretschmer

Sun

et al. 2015

ChemElectroChem

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We hereby report carbon‐coated LiFePO4 cathode materials prepared by industrial ball milling and a solid‐state reaction with Li2CO3, NH4H2PO4, and FeC2O4⋅2 H2O as starting materials. Soluble starch as the primary carbon source was investigated for its capability of generating a highly graphitic carbon coating, whilst sufficiently controlling the crystal growth of LiFePO4. XRD analysis, Raman spectroscopy, and electrochemical testing revealed the significant impact of the amount of starch added to the pre‐sintered precursor on phase purity, carbon quality, and electrochemical performance of the final LiFePO4/C composite. The optimum soluble starch content to achieve a highly sp2‐coordinated carbon coating is 10 wt %, which enabled our LiFePO4/C composite to achieve competitive reversible capacities as well as improved rate performance.

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A novel synthetic route for LiFePO4/C cathode materials by addition of starch for lithium-ion batteries

Cited by 18 publications

References 9 publications

Optimization of Synthesis Condition for LiFePO<sub>4</sub>/C Cathode Material

Optimization of Synthesis Condition for LiFePO<sub>4</sub>/C Cathode Material

First principles studies on the electronics structures of (Li1−x Me x )FePO4 (Me=Na and Be)

Scalable Preparation of LiFePO₄/C Nanocomposites with sp²‐Coordinated Carbon Coating as High‐Performance Cathode Materials for Lithium‐Ion Batteries

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A novel synthetic route for LiFePO4/C cathode materials by addition of starch for lithium-ion batteries

Cited by 18 publications

References 9 publications

Optimization of Synthesis Condition for LiFePO<sub>4</sub>/C Cathode Material

Optimization of Synthesis Condition for LiFePO<sub>4</sub>/C Cathode Material

First principles studies on the electronics structures of (Li1−x Me x )FePO4 (Me=Na and Be)

Scalable Preparation of LiFePO4/C Nanocomposites with sp2‐Coordinated Carbon Coating as High‐Performance Cathode Materials for Lithium‐Ion Batteries

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About

Scalable Preparation of LiFePO₄/C Nanocomposites with sp²‐Coordinated Carbon Coating as High‐Performance Cathode Materials for Lithium‐Ion Batteries