• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ACS Sustainable Chemistry & Engineering >Layer-Stacking Activated Carbon Derived from Sunflower Stalk as Electrode Materials for High-Performance Supercapacitors
【24h】

Layer-Stacking Activated Carbon Derived from Sunflower Stalk as Electrode Materials for High-Performance Supercapacitors

机译：层堆叠从向日葵茎衍生的活性炭作为高性能超级电容器的电极材料

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

Recently, interest in the use of carbonaceous materials derived from sustainable biomass wastes for supercapacitors (SCs) has grown. The sustainable sunflower stalk is selected as the raw material for preparing activated carbon (AC), using a simple hydrothermal carbonization (HTC) combining an effective activation method. The as-prepared AC sample possesses a unique mesoporous layer-stacking structure which has an unexpected surface area up to 1505 m(2) g(-1) as well as a pore size of 3.6 nm on average. As an electrode material for SCs, the AC demonstrates high electrochemical storage capacity, with the excellent capacitances of 365 and 263 F g(-1) measured by three-electrode and symmetrical SCs systems, respectively. An outstanding capacitance retention rate and a good stability value maintained after 15 000 cycles are close to 81 and 95%, respectively, which are obtained at a current density of 20 A Further, the symmetrical SCs exhibits an energy density as high as 35.7 Wh kg(-1) under the condition of a power density up to 989 W kg(-1). The electrochemical performances of AC derived from sunflower stalk are much higher than that reported in pervious literatures for other biomass. This work provides a clear, simple, and feasible synthetic path and strategy for converting sustainable waste biomass to activated carbons and also demonstrates that the biomass-derived carbon materials have the potential of high electrochemical performance in the field of energy storage, using different natural waste biomass types as raw materials.
机译：最近，兴趣使用来自可持续生物量废物的碳质材料，用于超级电容器（SCS）。使用简单的水热碳化（HTC），选择可持续向日葵茎作为制备活性炭（AC）的原料，其组合有效活化方法。制备的AC样品具有独特的介孔层堆叠结构，其意外的表面积高达1505μm（2 )g（-1）以及平均孔径为3.6nm。作为SCS的电极材料，AC分别示出了高电化学存储容量，其具有三电极和对称SCS系统的365和263V（-1）的优异电容。在15 000个循环后保持的优异电容保持率和保持良好的稳定性值分别接近81和95％，其在电流密度为20a的电流密度，对称SCS表现出高达35.7 WH kg的能量密度（-1）在功率密度的条件下，高达989 W kg（-1）。来自向日葵茎的AC的电化学性能远高于其他生物量的透析文献中报告的高得多。这项工作提供了一种清晰，简单，可行的合成路径和策略，用于将可持续的废物生物量转换为活性炭，并表明生物质衍生的碳材料在能量储存领域具有高电化学性能的潜力，使用不同的天然废物生物质类型为原料。

著录项

  • 来源
  • 作者

    Wang Xiaodong; Yun Sining; Fang Wen; Zhang Chen; Liang Xu; Lei Zhibin; Liu Zonghuai;

  • 作者单位

    Xian Univ Architecture &

    Technol Sch Mat &

    Mineral Resources FML 13 Yanta Rd Xian 710055 Shaanxi Peoples R China;

    Xian Univ Architecture &

    Technol Sch Mat &

    Mineral Resources FML 13 Yanta Rd Xian 710055 Shaanxi Peoples R China;

    Xian Univ Architecture &

    Technol Sch Mat &

    Mineral Resources FML 13 Yanta Rd Xian 710055 Shaanxi Peoples R China;

    Xian Univ Architecture &

    Technol Sch Mat &

    Mineral Resources FML 13 Yanta Rd Xian 710055 Shaanxi Peoples R China;

    Shaanxi Normal Univ Sch Mat Sci &

    Engn 620 West Changan St Xian 710119 Shaanxi Peoples R China;

    Shaanxi Normal Univ Sch Mat Sci &

    Engn 620 West Changan St Xian 710119 Shaanxi Peoples R China;

    Shaanxi Normal Univ Sch Mat Sci &

    Engn 620 West Changan St Xian 710119 Shaanxi Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学工业;
  • 关键词

    Supercapacitors; Activated carbons; Hydrothermal carbonization; Sustainable biomass; Sunflower stalk;

    机译：超级电容器;活性碳;水热碳化;可持续生物量;向日葵茎;

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