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Mn Nanoparticles Encapsulated within Mesoporous Helical N‐Doped Carbon Nanotubes as Highly Active Air Cathode for Zinc–Air Batteries
Advanced Sustainable Systems ( IF 6.5 ) Pub Date : 2019-11-07 , DOI: 10.1002/adsu.201900085 Qing Dong 1 , Hui Wang 1 , Shan Ji 2 , Xuyun Wang 1 , Quanbing Liu 3 , Daniel J. L. Brett 4 , Vladimir Linkov 5 , Rongfang Wang 1
Advanced Sustainable Systems ( IF 6.5 ) Pub Date : 2019-11-07 , DOI: 10.1002/adsu.201900085 Qing Dong 1 , Hui Wang 1 , Shan Ji 2 , Xuyun Wang 1 , Quanbing Liu 3 , Daniel J. L. Brett 4 , Vladimir Linkov 5 , Rongfang Wang 1
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The practical application of clean energy conversion and storage technologies, such as fuel cells and metal–air batteries, have been significantly impeded by the high cost and scarcity of precious metal catalysts used for the oxygen reduction reaction (ORR). Transitional metal/carbon compounds are a promising alternative to precious metal catalysts for the ORR. Herein, Mn nanoparticles encapsulated within mesoporous helical N‐doped carbon nanotubes (Mn@HNCNTs) are developed as highly active ORR catalysts. In terms of the onset potential and half‐wave potential for ORR, the optimized Mn@HNCNTs exhibit an excellent ORR performance, which is comparable to Pt/C. When the Mn@HNCNTs are assembled as air cathodes, with zinc foil as the anode in primary zinc–air cells, the obtained cell delivers a higher cell voltage and capacity than the zinc–air cell using Pt/C as the air cathode, as well as many reported cells using TM/CNT‐based air cathodes. The electrocatalytic performance in the zinc–air cell demonstrates that Mn@HNCNTs have great potential for use as ORR catalysts in metal–air batteries.
中文翻译：
Mn纳米颗粒封装在介孔螺旋N掺杂碳纳米管中，作为锌-空气电池的高活性空气阴极。
清洁能源转换和存储技术（例如燃料电池和金属空气电池）的实际应用已被氧气还原反应（ORR）所用的贵金属催化剂的高成本和稀缺性严重阻碍。过渡金属/碳化合物是ORR的有希望的替代贵金属催化剂的替代品。在本文中，封装在介孔螺旋N掺杂碳纳米管（Mn @ HNCNT）中的Mn纳米颗粒被开发为高活性ORR催化剂。就ORR的起始电势和半波电势而言，经过优化的Mn @ HNCNTs具有出色的ORR性能，可与Pt / C媲美。当Mn @ HNCNT作为空气阴极组装时，以锌箔作为一次锌空气电池中的阳极，与使用Pt / C作为空气阴极的锌空气电池以及许多使用基于TM / CNT的空气阴极的报告电池相比，所获得的电池提供更高的电池电压和容量。锌空气电池中的电催化性能表明Mn @ HNCNT具有在金属空气电池中用作ORR催化剂的巨大潜力。
更新日期：2019-12-13
中文翻译：
Mn纳米颗粒封装在介孔螺旋N掺杂碳纳米管中，作为锌-空气电池的高活性空气阴极。
清洁能源转换和存储技术（例如燃料电池和金属空气电池）的实际应用已被氧气还原反应（ORR）所用的贵金属催化剂的高成本和稀缺性严重阻碍。过渡金属/碳化合物是ORR的有希望的替代贵金属催化剂的替代品。在本文中，封装在介孔螺旋N掺杂碳纳米管（Mn @ HNCNT）中的Mn纳米颗粒被开发为高活性ORR催化剂。就ORR的起始电势和半波电势而言，经过优化的Mn @ HNCNTs具有出色的ORR性能，可与Pt / C媲美。当Mn @ HNCNT作为空气阴极组装时，以锌箔作为一次锌空气电池中的阳极，与使用Pt / C作为空气阴极的锌空气电池以及许多使用基于TM / CNT的空气阴极的报告电池相比，所获得的电池提供更高的电池电压和容量。锌空气电池中的电催化性能表明Mn @ HNCNT具有在金属空气电池中用作ORR催化剂的巨大潜力。
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