Citation: CHU Dao-Bao, LI Yan, SONG Qi, ZHOU Ying. Synthesis and Properties of LiFePO₄/C Cathode Material with a New Carbon Source[J]. Acta Physico-Chimica Sinica, ;2011, 27(08): 1863-1867. doi: 10.3866/PKU.WHXB20110807 shu

Synthesis and Properties of LiFePO₄/C Cathode Material with a New Carbon Source

1.
Anhui Key Laboratory of Functional Molecular Solids and Molecular-based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, Anhui Province, P. R. China

Received Date: 8 April 2011
Available Online: 10 June 2011
Fund Project: 国家自然科学基金(20476001) (20476001)安徽省自然科学基金(070414160)资助项目 (070414160)

We synthesized LiFePO₄/C composite cathode materials by the rheological phase method with vegetable protein soya bean milk as a carbon source while FePO₄·4H₂O and LiOH·H₂O as raw materials. X-ray diffraction (XRD) and scanning electron microscopy (SEM) results showed that the LiFePO₄/C composite materials had od crystallinity, ultrafine sphere-like particles of 200 nm in size and in situ carbon. The electrochemical performance of LiFePO₄/C by galvanostatic cycling studies showed excellent cycle stability. The LiFePO₄/C cathode material gave a high initial discharge capacity of 156 mAh·g^-1 at 0.1C and the first columbic efficiency was 98.7%. This capacity was still 149 mAh·g^-1 after 40 cycles at 0.1C and its capacity retention was more than 95% while the discharge capacity reached 134.7 mAh·g^-1 at 1C indicating high electrochemical capacity and excellent cycling stability.
- Lithium-ion battery,
- LiFePO₄,
- Cathode material,
- Vegetable protein,
- Carbon coating,
- Bean milk,
- Rheological phase method
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沈阳化工大学材料科学与工程学院沈阳 110142

Synthesis and Properties of LiFePO4/C Cathode Material with a New Carbon Source

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通讯作者: 陈斌, bchen63@163.com

Synthesis and Properties of LiFePO₄/C Cathode Material with a New Carbon Source