In the quest for economic, efficient, and environmentally benign electrode materials, metal oxides are extensively investigated owing to its non-toxic and higher theoretical capacitance. Herein, we have reported the synthesis of Ni-Mn-oxide as electrode materials. The hydrothermal approach is used for the synthesis of nanoflake with ultra-thin nanosheets of Ni-Mn-oxide on NF. The sample was characterized for morphological, structural, elemental, and chemical composition by carious tools such as FE-SEM, HR-TEM, XRD, and XPS. The cyclic voltammetry measurements show excellent rate capability of Ni-Mn-oxide-NF electrode from lower to higher scan rates with distinctive pseudocapacitive features in 3 M aqueous KOH electrolyte. Based on Faraday redox reactions the enhanced specific capacitance of 1495 F g−1 and 1265 Fg−1 at 1 A g−1 and 2 A g−1 current densities were obtained by galvanostatic charge–discharge measurements. Furthermore, Ni-Mn-oxide-NF electrode reveals excellent cyclic stability till 10,000 GCD cycles with 99 % Coulombic efficiency. Consequently, the overall results of the study demonstrate the promising potential of nano-flaky Ni-Mn-oxide-NF electrode for energy storage with enhanced performance for the practical implementation of supercapacitors.

中文翻译：

---

用于储能超级电容器的 Ni-Mn-oxide-NF 纳米片互连超薄纳米片


在寻求经济、高效和环保的电极材料的过程中，金属氧化物因其无毒和更高的理论电容而被广泛研究。在此，我们报道了 Ni-Mn-oxide 作为电极材料的合成。水热法用于在 NF 上合成具有超薄纳米片的 Ni-Mn-oxide 纳米片。通过 FE-SEM、HR-TEM、XRD 和 XPS 等龋齿工具对样品的形态、结构、元素和化学成分进行了表征。循环伏安法测量表明，Ni-Mn-oxide-NF 电极在较低到较高的扫描速率范围内具有出色的倍率能力，在 3 M 水性 KOH 电解质中具有独特的伪电容特性。基于法拉第氧化还原反应，通过恒电流充放电测量获得了在 1 A g-1 和 2 A g-1 电流密度下 1495 F g-1 和 1265 Fg-1 的增强比电容。此外，Ni-Mn-oxide-NF 电极在 10,000 GCD 循环之前表现出优异的循环稳定性，库仑效率为 99%。因此，该研究的总体结果表明，纳米片状 Ni-Mn-oxide-NF 电极在储能方面具有广阔的潜力，并增强了超级电容器的实际实施性能。