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

作　　者：李晓芳 陈晨 陈卓 文清清 LI Xiaofang;CHEN Chen;CHEN Zhuo;WEN Qingqing(Hubei Key Laboratory of Optical Information and Pattern Recognition,Wuhan Institute of Technology,Wuhan,Hubei 430205,China)

机构地区：[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

出　　处：《电池》2024年第4期461-466,共6页Battery Bimonthly

基　　金：湖北省自然科学基金(2022CFB741)。

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1 000次,电容保持率为90%。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 

分 类 号：TM533[电气工程—电器]