纳米笼
阳极
材料科学
碳化
锂(药物)
化学工程
储能
碳纤维
X射线光电子能谱
介孔材料
阴极
纳米技术
电极
化学
复合材料
催化作用
扫描电子显微镜
物理化学
复合数
有机化学
功率(物理)
物理
量子力学
工程类
内分泌学
医学
作者
Zheng Zhang,Ying Huang,Xiang Li,Shuai Zhang,Quanxing Jia,Tiehu Li
标识
DOI:10.1016/j.cej.2021.129827
摘要
Hollow nanostructures have shown great potential in energy storage and have attracted widespread attention. Here, we report a series of hollow carbon nanocage (HCN) by carbonizing [email protected] core–shell precursor at different temperatures. The study found that when the carbonization temperature is 800 °C, HCN-800 has a good hollow structure, thin shell and large specific surface area, and contains abundant micropores and mesopores. When used as an anode material, even at a current density of 10.0 A g−1, it can still obtain reversible capacities of 236.1 mA h g−1 (5000 cycles, lithium ion batteries LIBs) and 111.7 mA h g−1 (10000 cycles, sodium ion batteries SIBs), showing excellent cycle stability and long cycle lifespan. And this outstanding ability can still be maintained under high areal mass loading. In addition, the lithium/sodium storage behavior was analyzed by CV kinetic analysis, ex-situ XPS and Raman tests. Benefiting from these advantages, HCN-800 can be prepared with higher areal mass loading by 3D printing and exhibit excellent lithium/sodium storage performance, which will bring broad application prospects for the development of high energy density secondary batteries. Finally, by using LiCoO2/Na3V2(PO4)3 cathode and HCN-800 anode to assemble a full cell to study the cycle performance. After 100 cycles at 0.1 A g−1 current density, the reversible capacity of 561.5 mA h g−1 (LIBs) and 164.7 mA h g−1 (SIBs) can be provided respectively, indicates that it has the potential of practical application.
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