Abstract Binder-free CoMoO4 hexagonal nanosheets have been directly grown on the surface of conductive carbon fabric cloth (CoMoO4@CFC) as a hybrid electrode material for pseudocapacitors (PCs) with outstanding electrochemical properties. The as-prepared CoMoO4@CFC sample was structurally and morphologically characterized using various techniques. Microstructure analysis reveals that the hexagonal like 2D structure possesses mesoporous characteristics with abundant electroactive sites as a charge storage host. The CoMoO4@CFC was evaluated as a positive electrode material for pseudocapacitors, which revealed a maximum specific capacitance of 1210 F/g at 2.5 A/g with exceptional rate capability and outstanding cycling stability of 91% after 10,000 charge/discharge cycles. The 2D mesoporous hexagonal-like structure provides improved electrolyte movement during charging/discharging process and additional active sites for redox reactions. In addition, the charge storage quantification of diffusion and capacitive charge mechanism was determined by employing Power's law, and accordingly, the CoMoO4@CFC electrode was attributed to a high capacitive charge value of (80% at rate 2.5 mV/s). Thus, this work specifies simple and cost-effective method to fabricate pseudocapacitors electrode materials with high energy density and improved cyclic life for energy storage devices.

中文翻译：

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无粘合剂二维六边形 CoMoO4 纳米片中的电荷存储作为赝电容器的氧化还原活性材料

摘要 无粘合剂的 CoMoO4 六边形纳米片直接生长在导电碳织物布 (CoMoO4@CFC) 的表面，作为具有优异电化学性能的赝电容器 (PC) 的混合电极材料。使用各种技术对制备的 CoMoO4@CFC 样品进行结构和形态表征。微观结构分析表明，六边形二维结构具有介孔特性，具有丰富的电活性位点作为电荷存储主体。CoMoO4@CFC 被评估为赝电容器的正极材料，其在 2.5 A/g 下的最大比电容为 1210 F/g，具有出色的倍率性能和 10,000 次充放电循环后 91% 的出色循环稳定性。二维介孔六边形结构在充电/放电过程中提供了改进的电解质运动，并为氧化还原反应提供了额外的活性位点。此外，扩散和电容充电机制的电荷存储量化是通过采用幂定律确定的，因此，CoMoO4@CFC 电极归因于高电容电荷值（80% at rate 2.5 mV/s）。因此，这项工作指定了一种简单且具有成本效益的方法来制造具有高能量密度和改善储能设备循环寿命的赝电容器电极材料。CoMoO4@CFC 电极归因于高电容电荷值（速率为 2.5 mV/s 时为 80%）。因此，这项工作指定了一种简单且具有成本效益的方法来制造具有高能量密度和改善储能设备循环寿命的赝电容器电极材料。CoMoO4@CFC 电极归因于高电容电荷值（速率为 2.5 mV/s 时为 80%）。因此，这项工作指定了一种简单且具有成本效益的方法来制造具有高能量密度和改善储能设备循环寿命的赝电容器电极材料。