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氮摻雜納米碳改性LiFePO4正極材料的研究進展
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武漢科技大學,武漢科技大學,武漢科技大學

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國家自然科學基金(項目號51372178);湖北省杰出青年基金 (項目號2013CFA021)


Research progress of nitrogen-doped nanocarbon modified LiFePO4 positive electrode materials
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The State Key Laboratory of Refractories and Metallurgy, College of Materials and Metallurgy, Wuhan University of Science and Technology,The State Key Laboratory of Refractories and Metallurgy, College of Materials and Metallurgy, Wuhan University of Science and Technology,The State Key Laboratory of Refractories and Metallurgy, College of Materials and Metallurgy, Wuhan University of Science and Technology

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    摘要:

    鋰離子電池是一種高效、清潔的儲能裝置,在便攜式電子產品、儲能設施和電動汽車等領域具有廣泛的應用前景,對于緩解能源危機、環(huán)境污染和優(yōu)化能源結構等方面具有重要意義。橄欖石型LiFePO4是最有前途的鋰離子電池正極材料之一,但較低的本征電子電導率與鋰離子擴散速率限制了其高倍率性能的發(fā)揮及在鋰離子動力電池中的廣泛應用。納米碳材料,尤其氮摻雜的無定形納米碳、碳納米管以及石墨烯等具有電子電導率高,比表面積大,親和力強以及熱、化學穩(wěn)定性好等特點,在改善LiFePO4材料性能方面顯示出獨特的優(yōu)勢。本文從摻雜方法、形貌結構、電化學性能等方面總結氮摻雜納米碳改性LiFePO4正極材料的研究進展,并展望其發(fā)展前景。

    Abstract:

    Lithium-ion batteries (LIBs) are efficient and clean energy storage devices, which offer widely promising applications for consumer electronic products, energy storage facilities and electric vehicles, and have great significance to optimize the energy structure and relieve the energy crisis and environmental pollution. Olivine-type LiFePO4 is one of most promising positive electrode materials for LIBs. However, the intrinsically low electronic conductivity and lithium-ion diffusion velocity result in poor performance of LiFePO4 and hinder its large-scale application for power type LIBs. Nanocarbon materials, especially the nitrogen-doped amorphous carbon, carbon nanotube and graphene, present many merits such as high electronic conductivity, large specific surface area, superior chemical affinity and good thermal or chemical stability etc, which demonstrate unique advantages to improve the electrochemical performances of LiFePO4. In this review, the research progresses of the nitrogen-doped nanocarbon modified LiFePO4 materials have been summarized from the aspects of doping method, morphology and structure, electrochemical performance, and the future developments of the doped nanocarbon modified LiFePO4 materials are outlooked.

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盧吉明,周盈科,田小慧.氮摻雜納米碳改性LiFePO4正極材料的研究進展[J].稀有金屬材料與工程,2017,46(9):2744~2752.[Jiming Lu, Yingke Zhou, Xiaohui Tian. Research progress of nitrogen-doped nanocarbon modified LiFePO4 positive electrode materials[J]. Rare Metal Materials and Engineering,2017,46(9):2744~2752.]
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  • 收稿日期:2016-07-31
  • 最后修改日期:2017-01-22
  • 錄用日期:2017-02-20
  • 在線發(fā)布日期: 2017-11-29
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