Carbon nanotubes anchored onto hollow carbon for efficient oxygen reduction
Source abstract
Abstract
设计和制备用于高效氧还原反应(ORR)的非贵金属基电催化剂对于清洁能源转换装置的开发至关重要, 但又极具挑战性. 在本工作中,我们通过热解双金属前驱体ZIF-Zn/Co, 成功制备了一种新型的分级中空碳纳米复合材料HNCT-CNT. 该材料富含Co-N x 位点以及原位形成的多壁碳纳米管. 理论和实验表明, HNCT-CNT使ORR中间体的活化能垒降低, 因而表现出了优异的ORR性能. 最佳催化剂表现出较正的半波电位为0.85 V, 极限电流密度高达6.36 mA cm−2, Tafel斜率为58.2 mV dec−1, 且结构稳定性良好. 此外, 基于HNCT-CNT组装的锌空气电池还显示出1.49 V的开路电压和116.56 mW cm−2的功率密度. 综上, 这种无机物模板法为制备金属有机框架化合物衍生的非贵金属基碳纳米电催化剂用于高效的电化学能源领域提供了一种新的方法.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Advanced battery technologies research · Supercapacitor Materials and Fabrication
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (48)
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