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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >One-pot growth of Co(OH)(2) nanowire bundle arrays on in situ functionalized carbon cloth for robust flexible supercapacitor electrodes
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One-pot growth of Co(OH)(2) nanowire bundle arrays on in situ functionalized carbon cloth for robust flexible supercapacitor electrodes

机译：CO（OH）（2）纳米线束阵列的单盆生长在原位官能化碳布中坚固的柔性超级电容电极

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摘要

A one-pot route for coaxial growth of crystallized Co(OH)(2) nanowire arrays on flexible carbon cloth (Co(OH)(2)/CC) has been developed for high-performance bendable pseudocapacitive electrodes. The hydrothermal process is found to result in in situ generation of hydrophilic groups on CC (in situ functionalized), changing its wettability and simultaneously helping the nucleation of Co(OH)(2). Electrochemical tests evidence that the Co(OH)(2)/CC can function as a high-performance electrode with a high areal capacitance up to approximate to 1.13 F cm(-2), excellent cycling performance (nearly 100% capacitance retention after programmed 4000 cycles) and good rate capability (retaining 46.7% of its maximum capacitance at a high current density of 40.8 mA cm(-2)). More importantly, detailed bending tests further demonstrate that the electrode possesses a good mechanical endurance. Even with an extreme bending radius, the majority of the nanowire arrays can still survive and the electrode shows small changes in capacitance (only 7.5% loss) and impendance (11%) compared to the unbent state. The unique mechanical merits of array architecture for robust flexible electrode design are put forward. Our work provides a direct strategy to grow ordered nanoarray energy storage electrodes with in situ functionalization of the current collector to achieve robust mechanical and electrical adhesion.
机译：已经开发了用于柔性碳布（CO（OH）（2）/ CC）的结晶CO（OH）（2）纳米线阵列的结晶CO（OH）（2）纳米线阵列的一锅途径，用于高性能可弯曲的假壳电极。发现水热过程导致在CC上的亲水基团（原位官能化），改变其润湿性并同时有助于有助于CO（OH）（2）的成核。电化学测试证据表明：CO（OH）（2）/ CC可以用作高性能电极的高性能电极，高度电容高达1.13 F cm（-2），优异的循环性能（编程后几乎100％电容保留4000个循环）和良好的速率能力（以40.8 mA cm（-2）的高电流密度保持其最大电容的46.7％）。更重要的是，详细的弯曲测试进一步证明电极具有良好的机械耐久性。即使具有极端弯曲半径，大部分纳米线阵列仍然可以存活，并且电极显示电容的小变化（仅7.5％损耗）和与不注定的状态相比的闭形（＆ 11％）。提出了用于鲁棒柔性电极设计的阵列架构的独特机械优点。我们的作品提供了一种直接策略，以使订购的纳米阵列能量存储电极具有本集电器的原位功能化，以实现稳健的机械和电气粘合。

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