生物活性炭编织布的制备及其电化学性能研究  

Preparation of Biological Activated Carbon Woven Cloth and Study on its Electrochemical Properties

作　　者：卢嘉欣 梁健俊 Lu Jiaxin;Liang Jianjun(Guangdong Midea Refrigeration Equipment Co.,Ltd.,Foshan 528000;Foshan University,School of Materials Science and Hydrogen Energy,Foshan 528000,China)

机构地区：[1]广东美的制冷设备有限公司,广东佛山528000 [2]佛山科学技术学院材料科学与氢能学院,广东佛山528000

出　　处：《广东化工》2022年第23期96-101,共6页Guangdong Chemical Industry

摘　　要：以商用全棉编织布为碳源,经800℃炭化后,采用KOH或NaF活化处理,制备了电化学性能优良的活性炭布。通过对活性炭布的结构表征和电化学性能测试,研究了活化剂浓度和活化温度对活性炭布的结构形貌和电化学性能的影响。结果表明,随着KOH浓度增大,活性炭布的纤维表面粗糙度增大,但浓度超过2 mol/L,纤维表面出现孔洞,出现过度活化现象,对应的电化学性能降低。随着温度的上升,纤维表面粗糙度增大,至900℃并没有出现过度活化现象。当采用1.5mol/LKOH溶液,800℃活化制备的活性炭布比容量最高,可达57.75 F/g(扫描速度为10 mV/s)。而当采用2 mol/L NaF溶液,1000℃活化获得的活性炭布比容量可达69.34 F/g。这些结果为制备电化学高性能储能活性炭布提供一定的指导作用。Activated carbon cloth with excellent electrochemical properties was prepared by commercial cotton woven cloth as carbon source carbonized at 800 ℃ and subsequently activated by KOH or NaF. The effects of concentration of activator and activation temperature on the structure morphology and electrochemical properties of activated carbon cloth were studied by structural characterization and electrochemical performance test. The results show that with the increase of KOH concentration, the surface roughness of activated carbon cloth fiber increases, but when the concentration exceeds 2 mol/L, the fiber surface exhibits holes and excessive activation phenomenon, and the corresponding electrochemical performance decreases. With the increase of temperature, the surface roughness of the fiber increases, and there is no over-activation phenomenon when the temperature reaches 900 ℃. The electrochemical performance of the fiber enhances with the increase of activation temperature. When activated carbon cloth was fabricated by 1.5 mol/L KOH solution and activization at 800 ℃, its specific capacitance was the highest, up to 57.75 F/g(with scan rate of 10 mV/s). When activated carbon cloth was fabricated by 2 mol/L NaF solution and activization at 1000 ℃, its specific capacitance could reach 69.34 F/g. These results provide guidance for the preparation of electrochemical high performance activated carbon cloth for energy storage.

关 键 词：编织布 活性炭布 超级电容器 生物质 

分 类 号：TQ[化学工程]