Chinese Version
Home | About Journal | Editorial Board | Information for Authors | Copyright Transfer Statement | Contact us
Prussian Blue Cathode Material: Preparation by Ion-Exchange Method and Electrochemical Potassium-Storage Performance
Author NameAffiliationE-mail
SUN Yun-Po School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China  
XIE Jian School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China xiejian1977@zju.edu.cn 
ZHAO Xin-Bing School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China  
ZHUANG Da-Gao Shanghai Han Xing Science and Technology Co., Ltd., Shanghai 201322, China  
ZHANG Gen-Lin Shanghai Han Xing Science and Technology Co., Ltd., Shanghai 201322, China  
Abstract: Na-doped K-based Prussian blue (NKPB) material (K1.9Na0.1Mn[Fe(CN)6]·0.4H2O) was prepared by ion-exchange method using KCl and Na-based Prussian blue (NPB) material(Na2-xMn[Fe(CN)6]z·yH2O) as the precursors. The electrochemical tests reveal that compared with the K-based Prussian blue (KPB) material K1.85Mn[Fe(CN)6]0.98□0.02·0.7H2O (□ is the[Fe(CN)6] vacancy) prepared by a conversional coprecipitation route, the NKPB prepared by ion-exchange method shows higher capacity (the initial discharge capacity at 0.1C reached 136.3 mAh·g-1), longer cycle life (the capacity retention after 100 cycles at 0.5C was 96.1%), and better rate capability (the capacities at 5C and 10C were 87.6 and 68.4 mAh·g-1, respectively). The outstanding electrochemical performance of the NKPB material is ascribed to its high K content, good crystal integrity, Na-ion doping, nanosized particles and the unique open framework structure.
Keywords: potassium-ion battery  cathode material  Prussian blue material  ion-exchange method  electrochemical performance
Hits:  1763
Download times:  682
SUN Yun-Po,XIE Jian,ZHAO Xin-Bing,ZHUANG Da-Gao,ZHANG Gen-Lin.Prussian Blue Cathode Material: Preparation by Ion-Exchange Method and Electrochemical Potassium-Storage Performance[J].Chinese Journal of Inorganic Chemistry,2020,36(1):106-112.
View Full Text  View/Add Comment  Download reader
Chinese Journal of Inorganic Chemistry