We report a Co₃O₄ exsolved perovskite oxide PrBaMn_1.7Co_0.3O_5+δ (Co₃O₄–PBMCO) that utilizes the Faradaic transfer of metal oxide and favorable OH^– adsorption for an energy storage mechanism, as an active material for hybrid supercapacitors. It demonstrated electrochemical performances supported by both fast oxygen anion intercalation in the interior and Faradaic redox reaction on the surface of the active material, Co₃O₄–PBMCO. The flexible hybrid supercapacitor, Co₃O₄–PBMCO, coated onto the three-dimensional nickel wire (3D-Ni), exhibited outstanding capacitance (capacity) of 1571 F g^–1 (218.54 mAh g⁻¹), good rate capability, and cycle stability. With these performances, the hybrid device exhibited a high energy density of 215.80 Wh kg^–1 and a power density of 1.48 kW kg^–1, which are significantly higher than those of previously reported perovskite oxide-based electrodes. These results verified that our unique metal oxide exsolved layered perovskite oxide is a promising candidate as an active material for hybrid devices that can be widely applied for smart wearable and implantable devices.

中文翻译：

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Co ₃ O ₄溶解的有缺陷的层状钙钛矿氧化物，用于储能系统

我们报告的共₃ ö ₄出溶的钙钛矿氧化物PrBaMn _1.7钴_0.3 ø _{5 +δ}（共₃ ö ₄ -PBMCO），其利用金属氧化物和有利OH的法拉第转移^-吸附的能量储存机构，作为用于活性物质混合超级电容器。它显示了电化学性能，这是由内部快速氧阴离子嵌入和活性材料Co ₃ O ₄ –PBMCO表面上的法拉第氧化还原反应所支持的。柔性混合超级电容器Co ₃ O ₄–包覆在三维镍丝（3D-Ni）上的–PBMCO表现出1571 F g ^–1（218.54 mAh g ^-1）的出色电容（容量），良好的倍率能力和循环稳定性。凭借这些性能，混合动力装置展现出215.80 Wh kg ^–1的高能量密度和1.48 kW kg ^–1的功率密度，远高于先前报道的钙钛矿氧化物基电极。这些结果证明，我们独特的金属氧化物溶解的层状钙钛矿氧化物是有前途的候选材料，可作为可广泛用于智能可穿戴和可植入设备的混合设备的活性材料。