Ternary doped porous carbon nanofibers with excellent ORR and OER performance for zinc–air batteries
Ternary doped porous carbon nanofibers with excellent ORR and OER performance for zinc–air batteries
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DOI：
10.1039/c8ta02416b
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发表时间：
2018-06
影响因子：
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通讯作者：
Mingguang Wu;Yueqing Wang;Zengxi Wei;Lei Wang;M. Zhuo;Jintao Zhang;Xiaopeng Han;Jianmin Ma
中科院分区：
文献类型：
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作者：
Mingguang Wu;Yueqing Wang;Zengxi Wei;Lei Wang;M. Zhuo;Jintao Zhang;Xiaopeng Han;Jianmin Ma
氧还原反应(ORR)和析氧反应(OER)在锌空气电池的空气电极反应中起着重要的作用。然而，贵金属基催化剂在催化氧化还原和氧化还原过程中存在成本高、稳定性差等问题。碳基材料具有成本低、导电性好、比表面积大、耐久性好等优点，被认为是贵金属催化剂的理想替代品。特别是，碳的杂原子掺杂已被证明是一种提高催化性能的有效方法。在本论文中，我们首次通过静电纺丝和后续热处理的方法合成了N，F，P三元掺杂的大孔碳纤维(NFPC)，作为一次电池和二次电池的双功能催化剂。杂原子在大孔碳纤维中的均匀分布使其对ORR和OER的催化效率大大提高，在锌-空气体系中表现出优异的性能。
The oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) play an important role in the air electrode reactions of rechargeable Zn–air batteries. However, noble metal-based catalysts for the ORR and OER always suffer from high cost and poor stability. Carbon-based materials with many advantages such as low cost, good conductivity, a large specific surface area and considerable durability are considered as promising alternatives to noble metal-based catalysts. In particular, the doping of heteroatoms into carbon has been proven to be an effective method to improve catalytic performance. Herein, we synthesized N, F, P ternary doped macro-porous carbon fibers (NFPC) as a bifunctional catalyst for primary and rechargeable Zn–air batteries for the first time via an electrospinning method with subsequent thermal annealing. The uniform distribution of heteroatoms in the macroporous carbon fibers induced a greatly improved catalytic efficiency towards the ORR and OER, showing exceptional properties in Zn–air systems.