前几天发一篇 危险的高空锂电池 , 危险原因就是锂电池不能耐高温. 最近在Angewandte Chemie International Edition看到一篇相关报道,他的阻燃型锂盐用于燃料电池,热稳定温度可以达到200度,锂电池正在向高温高稳定性迈进! 另外 在Advanced Materials 一个利用Sn 4 P 3 阳极材料的钠离子电池也挺有意思,可逆电容量可达718 mA h g −1. Phosphoryl-Rich Flame-Retardant Ions (FRIONs): Towards Safer Lithium-Ion Batteries † http://onlinelibrary.wiley.com/doi/10.1002/anie.201310867/abstract Abstract The functionalized catecholate, tetraethyl (2,3-dihydroxy-1,4-phenylene)bis(phosphonate) (H 2 -DPC), has been used to prepare a series of lithium salts Li , Li , Li , and Li . The phosphoryl-rich character of these anions was designed to impart flame-retardant properties for their use as potential flame-retardant ions (FRIONs), additives, or replacements for other lithium salts for safer lithium-ion batteries. The new materials were fully characterized, and the single-crystal structures of Li and Li have been determined. Thermogravimetric analysis of the four lithium salts show that they are thermally stable up to around 200 °C. Pyrolysis combustion flow calorimetry reveals that these salts produce high char yields upon combustion. Tin Phosphide as a Promising Anode Material for Na-Ion Batteries http://onlinelibrary.wiley.com/doi/10.1002/adma.201305638/abstract Sn 4 P 3 is introduced for the first time as an anode material for Na-ion batteries. Sn 4 P 3 delivers a high reversible capacity of 718 mA h g −1 , and shows very stable cycle performance with negligible capacity fading over 100 cycles, which is attributed to the confinement effect of Sn nanocrystallites in the amorphous phosphorus matrix during cycling.
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