材料科学
普鲁士蓝
电化学
阴极
阳极
水溶液
离子
无机化学
化学工程
快离子导体
钠
钾
电极
电解质
物理化学
化学
冶金
有机化学
工程类
作者
Dapeng Zhang,Lianhang Sun,Changhao Wang,Qing Xue,Feng Jin,Weiguang Ran,Tingjiang Yan
标识
DOI:10.1021/acsami.2c00143
摘要
Open-framework structured materials such as Prussian blue analogues and sodium superionic conductor (NASICON) materials have been regarded as promising electrode candidates for aqueous batteries. These materials exhibit outstanding long cycle stability and high rate capacity retention, due to their high ion diffusive rate in the crystal and the stable structure maintenance in the electrochemical reaction process. Herein, an open-framework structured material [Ni(en)2]3[Fe(CN)6]2 (NienHCF) is prepared and first used as a cathode material for aqueous sodium- and potassium-ion batteries. The resultant material exhibits a high output potential and outstanding cycle performance (93.4% after 500 cycles at 1 A g-1) in K-ion batteries. Meanwhile, the electrochemical reaction mechanism is investigated. After coupling with the activated carbon anode, the K-ion full cell has 91.5% capacity retention at 5 A g-1 and retains 77.2% after 1000 cycles at 0.5 A g-1, exhibiting the potential as an electrode material for rechargeable aqueous K-ion and Na-ion batteries.
科研通智能强力驱动
Strongly Powered by AbleSci AI