...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Mohr's salt assisted KOH activation strategy to customize S-doped hierarchical carbon frameworks enabling satisfactory rate performance of supercapacitors
【24h】

Mohr's salt assisted KOH activation strategy to customize S-doped hierarchical carbon frameworks enabling satisfactory rate performance of supercapacitors

机译：Mohr的盐辅助KOH激活策略定制S掺杂的等级碳框架，使超级电容器的令人满意的速率性能

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The construction of heteroatom-doped hierarchical carbon frameworks has attracted significant research attention as high-performance electrode materials for supercapacitors. Herein, a facile one-step Mohr's salt-assisted KOH activation strategy has been developed for the production of S-doped hierarchical carbon frameworks with large specific surface area from sustainable spruce bark. We found Mohr's salt plays multiple roles during the synthesizing process by simultaneously acting as an S source, the template to generate mesopores, and the co-activator beyond KOH. As the electrode for supercapacitors, the high specific capacitance of 281 and 156 F g(-1) can be achieved in aqueous electrolyte and ionic liquid electrolyte at 1 A g(-1), respectively. More importantly, the electrode also displays excellent rate capability where a high capacitance can be maintained at large charge-discharge operation. Moreover, the supercapacitor device also demonstrated an energy density is high up to 66.26 Wh kg(-1) at the power density of 875 W kg(-1) in ionic liquid electrolyte. These results acquired could offer a versatile way to convert renewable biomass into value-add porous carbon for electrochemical energy-storage applications. (C) 2021 Elsevier B.V. All rights reserved.
机译：作为超级电容器的高性能电极材料，杂原子掺杂的多层碳框架的构建引起了人们的广泛关注。在此，我们开发了一种简便的一步莫尔盐辅助KOH活化策略，用于从可持续的云杉树皮中生产具有大比表面积的s掺杂分级碳框架。我们发现莫尔盐在合成过程中起着多种作用，同时作为s源、生成中孔的模板和KOH以外的助活化剂。作为超级电容器的电极，在1ag（-1）的水电解质和离子液体电解质中可分别获得281和156fg（-1）的高比电容。更重要的是，该电极还显示出优良的速率性能，在大充放电操作下可以保持高电容。此外，超级电容器装置还表明，在离子液体电解质中，当功率密度为875 W kg（-1）时，能量密度高达66.26 Wh kg（-1）。这些研究结果为将可再生生物质转化为具有附加值的多孔碳以用于电化学储能应用提供了一种通用方法。（c）2021爱思唯尔B.V.保留所有权利。

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