新型光辅助充电锂离子电池用电极材料

New kind of electrode materials used for photo-rechargeable lithium-ion batteries

在太阳电池和锂离子电池已经商业化的今天,各自都还有发展空间。鉴于两大电池体系有各自不可替代的优势及无法解决的弱点,可光辅助充电的锂离子电池将它们有机结合起来形成了新型电池。纵观各项相关文献,目前为止,相关电极材料鲜有显著的研究进展。科学家们使用了很多材料进行探索,但是实验结果表明,材料间的能级匹配、光生载流子的高氧化还原电位、材料的表面粗糙度和粒子的粒径大小等等都是需要考虑的重要因素。最终要找到一个既具有高光电转换效率又具有高储存容量的材料还有艰难而漫长的道路。

The solar cells and lithium-ion secondary battery has been commercialized today,but both of them have their own development space.Because there are respective irreplaceable advantages and unsolvable weaknesses in the two battery systems,the photo-rechargeable lithium-ion battery is emerging.The relative literatures were reviewed,but up till now,there was no significant progress in this field of electrode materials.A lot of materials have been investigated,and the results show that there are momentous factors to take into account,such as matching of the energy levels,high redox potentials of the photo-convert carriers,surface roughness of the materials and the particle size.To sum it up,there is a long and formidable way to find high performance material for the photorechargeable lithium-ion batteries.