氮硫共掺杂中空纳米炭瓶的可控合成
Controllable synthesis of nitrogen and sulfur co-doped hollow carbon nanobottles
李晓芳 1陈晨 1陈卓 1文清清1
作者信息
- 1. 武汉工程大学光学信息与模式识别湖北省重点实验室,湖北武汉 430205
- 折叠
摘要
杂原子掺杂碳材料因优异的电化学性能日益受到重视.以生物质基化合物(果糖)为碳源,油酸钠和三段共聚物为软模板,结合水热碳化法,原位可控合成瓶状结构的氮硫共掺杂中空纳米碳材料.分析碳材料的微观形貌、元素组成和元素结合形态等特性.碳纳米颗粒具有中空瓶状结构,并掺杂了N/S元素.基于微观形貌,推测材料从中空瓶状结构生长成实心花生状结构的演变机理.在6 mol/L KOH溶液中,该材料制得的电极以1 A/g电流在0～1 V循环,比电容为133.2 F/g,以10 A/g电流循环1000次,电容保持率为90％.
Abstract
Heteroatom-doped carbon materials have attracted more and more attention due to their excellent electrochemical performance.Using biomass-based compounds (fructose) as carbon source,sodium oleate and three-segment copolymers as soft templates,combined with hydrothermal carbonization method,nitrogen and sulfur co-doped hollow carbon nanoparticles with the unique bottle-like structure are synthesized in situ and controlled.The microscopic morphology,elemental composition and elemental binding morphology of the carbon nanoparticles are analyzed.Carbon nanoparticles have a hollow bottle-like structure and are doped with N/S elements.Based on the microstructure,the evolution mechanism of the growth of the material from the hollow bottle-like structure to the solid peanut-like structure is obtained.In 6 mol/L KOH solution,the electrode prepared by the material has a specific capacitance of 133.2 F/g at a current of 1 A/g in 0-1 V,the capacitance retention rate is 90％ after 1000 cycles at a current of 10 A/g.
关键词
超级电容器/电极材料/碳材料/纳米材料/氮硫共掺杂/软模板/水热法/纳米炭瓶Key words
supercapacitor/electrode material/carbon material/nanomaterial/nitrogen and sulfur co-doping/soft template/hydrothermal method/carbon nanobottle引用本文复制引用
基金项目
湖北省自然科学基金(2022CFB741)
出版年
2024
国家科技期刊平台
NSTL
万方数据