首页> 外文OA文献 >A Rational Synthesis of Hierarchically Porous, N-Doped Carbon from Mg-Based MOFs: Understanding the Link between Nitrogen Content and Oxygen Reduction Electrocatalysis
【2h】

A Rational Synthesis of Hierarchically Porous, N-Doped Carbon from Mg-Based MOFs: Understanding the Link between Nitrogen Content and Oxygen Reduction Electrocatalysis

机译:从基于镁的MOF合理合成多孔N掺杂碳:理解氮含量与氧还原电催化之间的联系

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

Controlled mixtures of novel Mg-based metal–organic frameworks (MOFs) were prepared, with H+ or K+ as counterions. A linear relation was found between synthesis pH and K/H ratio in the resultant mixture, establishing the tunability of the synthesis. Upon pyrolysis, these precursor mixtures yield nitrogen-doped, hierarchically porous carbons, which have good activity towards the oxygen reduction reaction (ORR) at pH 13. The nitrogen content varies significantly along the homologous carbon series (>400%, 1.3 at% to 5.7 at%), to a much greater extent than microstructural parameters such as surface area and graphitization. This allows us to isolate the positive correlation between nitrogen content and electrocatalytic oxygen reduction ORR activity in this class of metal-free, N-doped, porous carbons.
机译:以H +或K +作为抗衡离子,制备了新型的基于Mg的金属-有机骨架(MOF)的受控混合物。在所得混合物中,合成pH与K / H比之间存在线性关系,从而建立了合成的可调性。热解后,这些前体混合物会生成氮掺杂的分级多孔碳,这些碳在pH值为13时对氧还原反应(ORR)具有良好的活性。氮含量沿同源碳系列显着变化(> 400%,1.3 at%比微观结构参数(例如表面积和石墨化)大得多(5.7 at%)。这使我们能够隔离这类无金属,N掺杂的多孔碳中氮含量与电催化氧还原ORR活性之间的正相关关系。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

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