Nickel Nanoparticles Encapsulated in Nitrogen-Doped Carbon Nanotubes as Excellent Bifunctional Oxygen Electrode for Fuel Cell and Metal–Air Battery

2018 ◽  
Vol 6 (11) ◽  
pp. 15108-15118 ◽  
Author(s):  
Guoyu Zhong ◽  
Simin Li ◽  
Shurui Xu ◽  
Wenbo Liao ◽  
Xiaobo Fu ◽  
...  
2018 ◽  
Vol 778 ◽  
pp. 275-282
Author(s):  
Noaman Khan ◽  
Saim Saher ◽  
Xuan Shi ◽  
Muhammad Noman ◽  
Mujahid Wasim Durani ◽  
...  

Highly porous ZIF-67 (Zeolitic imidazole framework) has a conductive crystalline metal organic framework (MOF) structure which was served as a precursor and template for the preparation of nitrogen-doped carbon nanotubes (NCNTs) electrocatalysts. As a first step, the chloroplatinic acid, a platinum (Pt) precursor was infiltrated in ZIF-67 with a precise amount to obtain 0.12 mg.cm-2 Pt loading. Later, the infiltrated structure was calcined at 700°C in Ar:H2 (90:10 vol%) gas mixture. Multi-walled nitrogen-doped carbon nanotubes were grown on the surface of ZIF-67 crystals following thermal activation at 700°C. The resulting PtCo-NCNTs electrocatalysts were deposited on Nafion-212 solid electrolyte membrane by spray technique to study the oxygen reduction reaction (ORR) in the presence of H2/O2 gases in a temperature range of 50-70°C. The present study elucidates the performance of nitrogen-doped carbon nanotubes ORR electrocatalysts derived from ZIF-67 and the effects of membrane electrode assembly (MEA) steaming on the performance of proton exchange membrane fuel cell (PEMFC) employing PtCo-NCNTs as ORR electrocatalysts. We observed that the peak power density at 70°C was 450 mW/cm2 for steamed membrane electrode assembly (MEA) compared to 392 mW/cm2 for an identical MEA without steaming.


Carbon ◽  
2020 ◽  
Vol 162 ◽  
pp. 300-307 ◽  
Author(s):  
Dongsheng Xia ◽  
Fei Tang ◽  
Xiaozhang Yao ◽  
Yinping Wei ◽  
Yuefei Cui ◽  
...  

2017 ◽  
Vol 53 (84) ◽  
pp. 11596-11599 ◽  
Author(s):  
Hui Cheng ◽  
Jun-Min Chen ◽  
Qi-Jia Li ◽  
Chang-Yuan Su ◽  
An-Na Chen ◽  
...  

Advanced Co–Mn bimetallic nanoparticles are decorated on high conductivity nitrogen doped carbon nanotubes to serve as the efficient oxygen-catalyst.


2020 ◽  
Vol 381 ◽  
pp. 122681 ◽  
Author(s):  
Yisi Liu ◽  
Lishan Yang ◽  
Bo Xie ◽  
Nian Zhao ◽  
Lun Yang ◽  
...  

2014 ◽  
Vol 156-157 ◽  
pp. 341-349 ◽  
Author(s):  
Petri Kanninen ◽  
Maryam Borghei ◽  
Olli Sorsa ◽  
Elina Pohjalainen ◽  
Esko I. Kauppinen ◽  
...  

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