• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of solid state electrochemistry >Preparation of activated carbon from waste Camellia oleifera shell for supercapacitor application
【24h】

Preparation of activated carbon from waste Camellia oleifera shell for supercapacitor application

机译：用油茶废壳制备活性炭，用于超级电容器

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The cost-effective activated carbons derived from waste Camellia oleifera shell (COS) by ZnCl _2 activation method are investigated as the active electrode material in electric double-layer capacitors (EDLCs) for the first time. The activation temperature and ZnCl _2/COS impregnation ratio are two key factors affecting the surface area and pore structure of the prepared activated carbons, which accordingly affect their capacitive performances. Electrochemical investigations indicate that the activated carbon (AC-3-600) obtained at the activation temperature of 600 °C and impregnation ratio of 3 shows the maximum specific capacitance of 374 and 266 Fg ~(-1) in 1 mol L ~(-1) H _2SO _4 and 6 mol L ~(-1) KOH electrolytes at 0.2 A g ~(-1), respectively. The high capacitance of the AC-3-600 is attributed to its high surface area (1,935 m ~2 g ~(-1)), high total pore volume (1.02 cm ~3 g ~(-1)), and especially the large percentage of micropores (735 m ~2 g ~(-1)). Meanwhile, the activated carbon presents good cycle stability in both acid and alkaline electrolytes during 5,000 cycles at a fair current density of 4 A g ~(-1). So, we had reasons to believe that the activated carbons from waste COS by ZnCl _2 activation might be one of the innovative carbon electrode materials for EDLCs application.
机译：首次研究了利用ZnCl _2活化法从油茶壳（COS）废油中提取的高性价比活性炭，作为双电层电容器（EDLC）中的活性电极材料。活化温度和ZnCl _2 / COS浸渍比是影响所制备活性炭的表面积和孔结构的两个关键因素，从而影响其电容性能。电化学研究表明，在600°C的活化温度和3的浸渍比下获得的活性炭（AC-3-600）在1 mol L〜（-时）表现出最大比电容374和266 Fg〜（-1）。 1）H _2SO _4和6 mol L〜（-1）KOH电解质分别为0.2 A g〜（-1）。 AC-3-600的高电容归因于其高表面积（1,935 m〜2 g〜（-1）），高总孔体积（1.02 cm〜3 g〜（-1）），尤其是大比例的微孔（735 m〜2 g〜（-1））。同时，活性炭在5,000次循环中在4 A g〜（-1）的公称电流密度下在酸性和碱性电解质中均表现出良好的循环稳定性。因此，我们有理由相信通过ZnCl _2活化从废COS中获得的活性炭可能是用于EDLC的创新碳电极材料之一。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号