In this paper, as a proof-of-concept study, a newly designed multifunctional composite electrode materials consisting of an interweaving structure of MnO₂ nanowires (NWs)/nanorods (NRs) and carbon nanotubes (CNTs) (MnO₂-NWRs/CNTs) are directly synthesized by a facile and scalable strategy, which show high catalytic activity for both oxygen reduction reaction (ORR)/oxygen evolution reaction (OER) processes and large specific capacitance for supercapacitors (SCs). Such a MnO₂-NWRs/CNTs₃₅₀ material is induced by the strong coupling and synergistic effect between MnO₂-NWRs and CNTs, as well as the coexistence of NRs/NWs and the existence of favorable crystal planes, which enable the multifunctional high-performance in zinc-air batteries (ZABs), magnesium-air batteries (MABs), SCs and also their flexible devices. The MnO₂-NWRs/CNTs₃₅₀ catalyst exhibits high electrochemical activity (ΔE: 0.98 V), decent capacitance (1183 F g⁻¹) and excellent battery performance (specifically, 640 mW cm⁻² for MABs). In MnO₂-NWRs/CNTs₃₅₀, the (110) and (101) crystal planes of MnO₂-NWRs are advantageous for both ORR and OER processes. Additionally, the structural changes of MnO₂-NWRs/CNTs₃₅₀ (the coexistent NRs and NWs) improve the capacitance of the material. Even more encouraging, the interweaving structure endows the flexible rechargeable MABs, ZABs, and SCs with excellent electrochemical performance in terms of both activity and stability.

在本文中，作为概念验证研究，一种新型设计的多功能复合电极材料，由MnO ₂纳米线（NWs）/纳米线（NRs）和碳纳米管（CNT）（MnO ₂ -NWRs / CNTs ）的交织结构组成）是通过一种简便且可扩展的策略直接合成的，该策略对氧还原反应（ORR）/氧释放反应（OER）过程均显示出高催化活性，而超级电容器（SC）则显示出较大的比电容。MnO ₂ -NWRs / CNTs ₃₅₀材料是由于MnO ₂之间的强耦合和协同作用而产生的-NWR和CNT，以及NR / NW的共存和有利的晶面的存在，这使锌-空气电池（ZAB），镁-空气电池（MAB），SC及其它们的多功能性得以实现柔性设备。MnO ₂ -NWRs / CNTs ₃₅₀催化剂表现出高电化学活性（ΔE：0.98 V），良好的电容（1183 F g ^-1）和出色的电池性能（特别是MABs为640 mW cm ^-2）。以MnO _2个-NWRs /碳纳米管₃₅₀，的MnO的（110）和（101）晶面_2个-NWRs对于两个ORR和OER过程是有利的。另外，MnO ₂ -NWR / CNT ₃₅₀的结构变化（共存的NR和NW）可提高材料的电容。更令人鼓舞的是，这种交织结构赋予了柔性可充电MAB，ZAB和SC在活性和稳定性方面都具有出色的电化学性能。