沈健教授课题组和周小四教授课题组合作在ANGEWANDTE CHEMIE-INTERNATIONAL EDITION发表研究论文

时间:2020-09-08 来源:化科院 点击数:

A Yolk-Shell-Structured FePO(4)Cathode for High-Rate and Long-Cycling Sodium-Ion Batteries
Zhang, ZZ (Zhang, Zhuangzhuang)[ 1 ] ; Du, YC (Du, Yichen)[ 1 ] ; Wang, QC (Wang, Qin-Chao)[ 2 ] ; Xu, JY (Xu, Jingyi)[ 1 ] ; Zhou, YN (Zhou, Yong-Ning)[ 2 ] ; Bao, JC (Bao, Jianchun)[ 1 ] ; Shen, J (Shen, Jian)[ 1 ]*(沈健); Zhou, XS (Zhou, Xiaosi)[ 1 ]*(周小四)


[ 1 ] Nanjing Normal Univ, Jiangsu Collaborat Innovat Ctr Biomed Funct Mat, Sch Chem & Mat Sci, Jiangsu Key Lab New Power Batteries, Nanjing 210023, Peoples R China
[ 2 ] Fudan Univ, Dept Mat Sci, Shanghai 200433, Peoples R China


ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,202008,10.1002/anie.202008318


Amorphous iron phosphate (FePO4) has attracted enormous attention as a promising cathode material for sodium-ion batteries (SIBs) because of its high theoretical specific capacity and superior electrochemical reversibility. Nevertheless, the low rate performance and rapid capacity decline seriously hamper its implementation in SIBs. Herein, we demonstrate a sagacious multi-step templating approach to skillfully craft amorphous FePO(4)yolk-shell nanospheres with mesoporous nanoyolks supported inside the robust porous outer nanoshells. Their unique architecture and large surface area enable these amorphous FePO(4)yolk-shell nanospheres to manifest remarkable sodium storage properties with high reversible capacity, outstanding rate performance, and ultralong cycle life.

文章链接:
https://onlinelibrary.wiley.com/doi/full/10.1002/anie.202008318

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