Hierarchical ball-in-ball structured nitrogen-doped carbon microspheres as high performance anode for sodium-ion batteries

Xiong, Wei1,2; Wang, Zhenyu1; Zhang, Jianqiao1; Shang, Chaoqun1; Yang, Mingyang1; He, Liqing1; Lu, Zhouguang1

2017-04

10.1016/j.ensm.2017.03.006

Energy Storage Materials   影响因子和分区

2405-8297

Microspheres with ball-in-ball (yolk@ void@ shell) structure have attracted much attention in energy storage materials. However, current fabrication technologies mainly rely on utilizing silica as templates with HF acid etching or hydrothermal methods to fabricate the ball-in-ball structural microspheres, and an additional step (KOH activation) is adopted to generate porous structure. Apparently, it cannot meet the demand for large-scale industrial production, on account of potential explosive risk, lengthy routes, high costs and utilizing highly toxic chemical reagents. Accordingly, to fully bridge the gap between laboratory scale and actual commercial application, we first report a facile precipitation polymerization approach for synthesis of nitrogen-doped hierarchical ball-in-ball (C@ void@ C) carbon microspheres both the shell and yolk having hierarchical structure, without employing templates, surfactant, KOH activation or hydrothermal devices. The as-obtained unique carbon microspheres have a large BET specific surface area of 1250.0 m(2) g(-1). In sodium-ion batteries, this anode material presents excellent electrochemical performance, the discharge specific capacity is as high as 472.5 mAh g(-1) at 50 mA g(-1), and a high reversible specific capacity (104 mAh g-1) is still retained at 5 A g(-1) after 1000 cycles.

Sodium-ion batteries Carbon microspheres Ball-in-ball Nitrogen doped Hierarchical structure

ESCI ; EI ; SCI

英语

第一 ; 通讯

Natural Science Foundation of Shenzhen[JCYJ20150630145302231] ; Natural Science Foundation of Shenzhen[JCYJ20150331101823677]

Materials Science

Materials Science, Multidisciplinary

WOS:000406777800021

ELSEVIER SCIENCE BV

20192907206345

Anodes ; Carbon ; Chemical activation ; Doping (additives) ; Etching ; Hydrothermal synthesis ; Metal ions ; Microspheres ; Nitrogen ; Potassium hydroxide ; Silica

Metallurgy:531.1 ; Electron Tubes:714.1 ; Chemical Reactions:802.2 ; Chemical Products Generally:804 ; Inorganic Compounds:804.2

Web of Science

1.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen, Peoples R China;
2.City Univ Hong Kong, Dept Phys & Mat Sci, Kowloon, Hong Kong, Peoples R China

Xiong, Wei,Wang, Zhenyu,Zhang, Jianqiao,et al. Hierarchical ball-in-ball structured nitrogen-doped carbon microspheres as high performance anode for sodium-ion batteries[J]. Energy Storage Materials,2017,7:229-235.

Xiong, Wei.,Wang, Zhenyu.,Zhang, Jianqiao.,Shang, Chaoqun.,Yang, Mingyang.,...&Lu, Zhouguang.(2017).Hierarchical ball-in-ball structured nitrogen-doped carbon microspheres as high performance anode for sodium-ion batteries.Energy Storage Materials,7,229-235.

Xiong, Wei,et al."Hierarchical ball-in-ball structured nitrogen-doped carbon microspheres as high performance anode for sodium-ion batteries".Energy Storage Materials 7(2017):229-235.