标题：
Prussian Blue Analogue with Fast Kinetics Through Electronic Coupling for Sodium Ion Batteries
点击次数：
所属单位：
材料科学与技术学院
发表刊物：
ACS Appl. Mater. Interfaces
摘要：
Alternative battery systems based on the chemistry of sodium are being considered to offer sustainability and cost-effectiveness. Herein, a simple and new method is demonstrated to enable nickel hexacyanoferrate (NiHCF) Prussian blue analogues (PBA) nanocrystals to be an excellent host for sodium ion storage by functionalization with redox guest molecule. The method is achieved by using NiHCF PBA powders infiltrated with the 7,7,8,8-tetracyanoquinododimethane (TCNQ) solution. Experimental and ab initio calculations results suggest that TCNQ molecule bridging with Fe atoms in NiHCF Prussian blue analogue leads to electronic coupling between TCNQ molecules and NiHCF open-framework, which functions as an electrical highway for electron motion and conductivity enhancement. Combining the merits including high electronic conductivity, open framework structure, nanocrystal, and interconnected mesopores, the NiHCF/TCNQ shows high specific capacity, fast kinetics and good cycling stability, delivering a high specific capacity of 35 mAh g-1after 2000 cycles, corresponding a capacity loss of 0.035% decay per cycle. © 2017 American Chemical Society.
ISSN号：
1944-8244
是否译文：
否
发表时间：
2017-06-21
合写作者：
聂平,Yuan, Jiaren,王婕,徐桂银,郝亮,庞刚,吴宇婷,张校刚
通讯作者：
张校刚,窦辉
发表时间：
2017-06-21
学位：理学博士学位
职称：教授
所在单位：材料科学与技术学院