首页> 外文OA文献 >New copper/GO based material as an efficient oxygen reduction catalyst in an alkaline medium: The role of unique Cu/rGO architecture
【2h】

New copper/GO based material as an efficient oxygen reduction catalyst in an alkaline medium: The role of unique Cu/rGO architecture

机译:新型铜/ GO基材料在碱性介质中可作为有效的氧还原催化剂:独特的Cu / rGO体系结构的作用

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

A new hybrid Cu/rGO catalyst obtained by a thermal treatment of the composite of a copper-based MOF with graphite oxide exhibited a marked catalytic activity for oxygen reduction reaction (ORR) in an alkaline medium, high tolerance to methanol oxidation and superior long-term stability over 20 h. The unique architecture of the copper atoms in the 3D framework of the pristine MOF coupled with the excellent electron transfer properties of rGO lead to materials with a homogenous distribution of copper nanoparticles of specific chemistry assembled within the graphene sheets. Fast O2 adsorption and charge transfer owing to the strong interactions between copper atoms and graphite oxide resulted in highly stable and active Cu/rGO electrodes, compared to the carbonized MOF. The synergistic effect of copper and rGO in the composite leads to a superior ORR activity in terms of long-term stability and high current densities, close to the best performance reported for Pt and other metal-free electrocatalysts.
机译:通过对铜基MOF与氧化石墨的复合材料进行热处理获得的新型杂化Cu / rGO催化剂在碱性介质中对氧还原反应(ORR)表现出显着的催化活性,对甲醇氧化具有很高的耐受性,并且具有优异的长寿命长期稳定性超过20小时。原始MOF的3D框架中铜原子的独特结构,加上rGO的出色电子转移特性,导致在石墨烯片中组装的具有特定化学性质的铜纳米粒子的材料均一分布。与碳化MOF相比,由于铜原子和氧化石墨之间的强相互作用,O2的快速吸附和电荷转移产生了高度稳定和活跃的Cu / rGO电极。在长期稳定性和高电流密度方面,铜和rGO在复合物中的协同作用可导致卓越的ORR活性,接近Pt和其他不含金属的电催化剂的最佳性能。

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