超级电容器
介孔材料
材料科学
溶解
兴奋剂
碳纤维
化学工程
球体
纳米技术
电极
复合材料
化学
光电子学
复合数
电容
有机化学
物理
催化作用
物理化学
天文
工程类
作者
Juan Du,Yue Zhang,Haixia Wu,Senlin Hou,Aibing Chen
出处
期刊:Carbon
[Elsevier]
日期:2020-01-01
卷期号:156: 523-528
被引量:103
标识
DOI:10.1016/j.carbon.2019.09.091
摘要
Abstract N-doped hollow mesoporous carbon sphere (N-HMCS) has attracted increasing attention as supercapacitor materials due to its rich mesoporous structure, large cavity, high surface area and suitable N-doping, etc. Herein, an improved dissolution-capture method is applied for preparation of N-HMCS using 3-aminophenol-formaldehyde (AF) resin spheres as carbon precursor. In this process, AF resin spheres preparation, mesoporous silica coating, dissolution-capture are implemented by one-pot process without multiple separation operation, which is beneficial for large-scale preparation. Mesoporous silica shell is in-situ coated on the surface of AF resin spheres, and AF oligomer, which is dissolved in N, N-dimethylformamide, is captured by mesopores on the silica shell. The obtained N-HMCS exhibits a relatively regular spherical shape, carbon shell with rich mesoporous, high surface area and nitrogen doping. As electrode materials in supercapacitor, the N-HMCS shows outstand performance with a high capacitance and a good capacitance retention, indicating its excellent promising in energy storage.
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