一种染料敏化光辅助充电锂离子二次电池

A kind of dye-sensitized photo-rechargeable Li-ion battery

锂离子二次电池通过电能转化为化学能的方式充电,存在自放电,令电池久置失效;染料敏化太阳电池通过光能转化为电能,即产即用,无法储存。目前已有文献报道的光可充电电池电极的相关材料储存的能量有限,且存在较大自放电现象,导致其储存的化学能无法稳定存在。提供一种低成本、安全可控、便携易操作的光辅助充电锂离子二次电池,该电池能稳定储存光能和电能,几乎不存在自放电现象,在光照下,可降低充电电压0.74 V,节约充电电能29.1%。

Li-ion rechargeable batteries transform electrical energy to chemical energy during charging, which remains self-discharging, leading battery invalid; dye-sensitized solar cells （DSSC） have a real-time transformation from luminous energy to electricity transition, but the electric energy can＇t be stored. The reported ＂photo-rechargeable batteries electrode material＂ which store limited energy have serious self-discharging problem, leading the stored chemical energy unstable. A low-cost, safe, easy-to-control, portable and easy operation photo-rechargeable Li-ion battery was provided. The battery can stably store energy, which nearly solves self-discharge problem, decreases 0.74 V charging voltage and saves 29.1% charging energy under illumination.