Chung, S. Y., J. T. Bloking and Y. M. Chiang (2002). "Electronically Conductive Phospho-Olivines as Lithium Storage Electrodes." Nature Materials 1(2): 123-128.
摘要:Lithium transition metal phosphates have become of great interest as storage cathodes for rechargeable lithium batteries because of their high energy density, low raw materials cost, environmental friendliness and safety. Their key limitation has been extremely low electronic conductivity, until now believedto be intrinsic to this family of compounds. Here we show that controlled cation non-stoichiometry combined with solid-solution doping by metals supervalent to Li+ increases the electronic conductivity of LiFePO4 by a factor of similar to10(8). The resulting materials show near-theoretical energy density at low charge/discharge rates, and retain significant capacity with little polarization at rates as high as 6,000 mA g(-1). In a conventional cell design, they may allow development of lithium batteries with the highest power density yet.
quote]Originally posted by 化學(xué)龍 at 2010-06-02 19:54:40:
室溫下磷酸亞鐵鋰的電子電導(dǎo)率和離子電導(dǎo)率?請(qǐng)附英文參考文獻(xiàn)!謝謝 [/quote],
實(shí)驗(yàn)室報(bào)道當(dāng)0.1C充放電時(shí),可以達(dá)到165mAh/g以上的比容量,實(shí)際達(dá)到135-145mAh/g,基本接近鈷酸鋰的水平
https://wenda.tianya.cn/wenda/thread?tid=1198200fe9885d40
請(qǐng)看MIT蔣先生的2002年Nature mater文章,里面有詳細(xì)的電子電導(dǎo)數(shù)據(jù)以及他們摻雜之后的結(jié)果,
還有通常不用離子電導(dǎo),直接用擴(kuò)散系數(shù),當(dāng)然你可以換算過去。
Chung, S. Y., J. T. Bloking and Y. M. Chiang (2002). "Electronically Conductive Phospho-Olivines as Lithium Storage Electrodes." Nature Materials 1(2): 123-128.
摘要:Lithium transition metal phosphates have become of great interest as storage cathodes for rechargeable lithium batteries because of their high energy density, low raw materials cost, environmental friendliness and safety. Their key limitation has been extremely low electronic conductivity, until now believedto be intrinsic to this family of compounds. Here we show that controlled cation non-stoichiometry combined with solid-solution doping by metals supervalent to Li+ increases the electronic conductivity of LiFePO4 by a factor of similar to10(8). The resulting materials show near-theoretical energy density at low charge/discharge rates, and retain significant capacity with little polarization at rates as high as 6,000 mA g(-1). In a conventional cell design, they may allow development of lithium batteries with the highest power density yet.
quote]Originally posted by 化學(xué)龍 at 2010-06-02 19:54:40:
室溫下磷酸亞鐵鋰的電子電導(dǎo)率和離子電導(dǎo)率?請(qǐng)附英文參考文獻(xiàn)!謝謝 [/quote],