...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >Nitrogen-enriched, ordered mesoporous carbons for potential electrochemical energy storage
【24h】

Nitrogen-enriched, ordered mesoporous carbons for potential electrochemical energy storage

机译：富氮，有序介孔碳，用于潜在的电化学能量存储

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

Nitrogen-doped (N-doped) porous carbons have drawn increasing attention due to their high activity for electrochemical catalysis, and high capacity for lithium-ion (Li-ion) batteries and supercapacitors. So far, the controlled synthesis of N-enriched ordered mesoporous carbons (N-OMCs) for Li-ion batteries is rarely reported due to the lack of a reliable nitrogen-doping protocol that maintains the ordered mesoporous structure. In order to realize this, in this work, ordered mesoporous carbons with controllable N contents were successfully prepared by using melamine, F127 and phenolic resin as the N-source, template and carbon-source respectively via a solvent-free ball-milling method. The as-prepared N-OMCs which showed a high N content up to 31.7 wt% were used as anodes for Li-ion batteries. Remarkably, the N-OMCs with an N content of 24.4 wt% exhibit the highest reversible capacity (506 mA h g(-1)) even after 300 cycles at 300 mA g(-1) and a capacity retention of 103.3%. N-OMCs were also used as electrode materials in supercapacitors and a capacity of 150 F g(-1) at 0.2 A g(-1) with stable cycling up to 2500 times at 1 A g(-1) was achieved. These attractive results encourage the design and synthesis of high heteroatom content ordered porous carbons for applications in the field of energy storage and conversion.
机译：氮掺杂（N掺杂）多孔碳由于其对电化学催化的高活性以及对锂离子（Li离子）电池和超级电容器的高容量而受到越来越多的关注。到目前为止，由于缺乏可靠的氮掺杂协议来维持有序介孔结构，用于锂离子电池的N富集有序介孔碳（N-OMC）的受控合成很少见。为了实现这一点，在这项工作中，通过无溶剂球磨法分别使用三聚氰胺，F127和酚醛树脂作为N源，模板和碳源，成功制备了N含量可控的有序介孔碳。所制得的N-OMC的高N含量高达31.7 wt％，被用作锂离子电池的负极。值得注意的是，即使在300 mA g（-1）下循环300次后，N含量为24.4 wt％的N-OMC仍具有最高的可逆容量（506 mA h g（-1））和103.3％的容量保持率。 N-OMC还用作超级电容器中的电极材料，在0.2 A g（-1）时的容量为150 F g（-1），在1 A g（-1）时达到2500次的稳定循环。这些诱人的结果鼓励了高杂原子含量有序多孔碳的设计和合成，可用于能量存储和转换领域。

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