锂-氧气电池中的水添加剂的关键作用:减少副产物和降低过电位

发布时间：2018-05-30 15:58

  本文选题：理论容量 + 能量密度　； 参考：《物理化学学报》2017年06期

【摘要】：正传统锂离子电池能量密度(200-250 Wh?kg~(-1))的不足严重制约了电动汽车的进一步发展,锂-氧气/空气电池因具有比前者高出约十倍的理论容量和能量密度(约2000 Wh?kg~(-1)),从而吸引了学术界和工业界的广泛关注~1。然而,锂-氧气/空气电池中的很多关键问题都还未得到解决,其倍率性能和循环寿命受限于电解液/电极面对超氧化物亲核攻击的稳定性,以及高充电电位下发生的副反应~2。
[Abstract]:The lack of energy density of conventional Li-ion batteries (200-250 Wha kg-1) has seriously restricted the further development of electric vehicles. Lithium-oxygen / air batteries have a theoretical capacity and energy density of about 10 times higher than the former (about 2000?)? However, many key problems in lithium-oxygen / air batteries have not been solved. Their rate performance and cycle life are limited by the stability of electrolyte / electrode to superoxide nucleophilic attack, and the side reactions at high charging potential.
【作者单位】： 武汉大学化学与分子科学学院;
【分类号】：TM911.41
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本文编号：1955875