现代热电池电极材料现状及展望

Research and prospect of modern thermal battery electrode materials

现代热电池基本电化学体系是锂合金 二硫化铁 (LiMx FeS2 )。锂铝 (LiAl)、锂硅 (LiSi)合金已广泛应用 ,三元锂合金也有报道 ,锂硼 (LiB)合金由于几乎完美的特性 (高电位、高容量 )现已引起人们特别关注。FeS2 电压较低 ,但容量大 ;五氧化二钒 (V2 O5)、锂钒氧 (LVO)等其它正极材料电压高、容量较小。热电池发展方向是大功率、长寿命 ,寻找新的热电池正极材料替代现有的FeS2

Thermal battery is a device which is able to supply energy only after it has been activated by rapid application of heat. Modern thermal batteries are based on the lithium alloy/iron disulphide (LiM x/FeS 2) couple. Lithium-aluminum (LiAl) and lithium-silicon (LiSi) have been applied extensively, three-phase alloy has been reported, lithium-boron (LiB) has attracted attention because of its almost ideal properties (high voltage, high electrochemical capacity). FeS 2 has very large capacity at low voltage, but other cathode materials such as vanadium pentoxide (V 2O 5) and lithiated vanadium oxide (LVO) have higher voltage, lower capacity. Development of thermal battery tends to higher power, longer life, so its important to find new cathode materials in place of current FeS 2 in future research