In the last decennium, portable electronic devices such as supercapacitors (SCs), solar cells, and lithium-ion batteries have gained much attention because of their energy storage, high flexibility, extraordinary power density, long cycle lifetime with remarkable mechanical properties, fast charge/discharge foldability, and conformability. These play a key role in the future electrical energy storage field (Pushparaj, Shaijumon, Kumar, Murugesan, Ci, Vajtai, Linhardt, Nalamasu and Ajayan, 2007, Miller, 2012, El-Kady, Strong, Dubin and Kaner, 2012). Among these devices, SCs have been dynamically trusted due to the electrical properties and mechanical honesty of the constitutive materials and their original assembly into a detached and binderless framework (Chen, Rakhi, Hu, Xie, Cui and Alshareef, 2011, Bae, Song, Park, Kim, Liu and Wang, 2011, Choi, Hong, Hong, Hammond and Park, 2011). Dignity of high energy density, high specific capacitance electric double layer capacitors (EDLCs), and pseudo capacitors attached much awareness. Owing to large surface area and more reaction sites, 2D materials, such as layered double hydroxides (LDHs) (Chen, Zhao, Wei, Li and Mi, 2020, Yin, Li, Zhang, Zhao, Luo, Shao and Han, 2020, Xu, Kong, Zhou, Zheng, Huo and Strømme, 2018, Yang, Ye, Liang, Wu, Long, Xu and Wang, 2020), transition metal oxides (TMOs) (Li, Han, Yi, He and Li, 2019, Zhang, Zhang, Sun, Sun and Liu, 2018, Bandgar, Vadiyar, Ling, Chang, Han, Ghule and Kolekar, 2018, Chen, Wang, Luo, Gao, Huang, Zeng and Zhu, 2019), and transition metal sulphide (TMSs) (Bulakhe, Arote, Kwon, Park and In, 2020, Zheng, Tian, Sarwar, Luo and Zhang, 2020, Rafai, Qiao, Naveed, Wang, Younas, Khalid and Cao, 2019, Yasoda, Kumar, Kumar, Ghosh and Batabyal, 2021) have been recommended in the field of energy storages devices. To achieve high specific capacity and rate capability, most of research performed LDHs type charismatic electrode material for SCs applications by reason of their low cost, non-toxicity, tuneable chemical composition, and environmental friendly nature (Zhang, Chen, Hui, San Hui and Lee, 2017, Li, San Hui, Hui, Xia, Fu and Cho, 2017). Zhi et al. 2018) proposed holey NiCo-LDHs thin sheets with 6.37F/cm2, 25F/g and 249F/cm2 areal, gravimetric and volumetric specific capacitance respectively.
Herein, a simple facile strategy is presented to conduct-layer NiMn-LDH/Graphene oxide nanosheet arrays grown on Ni foam. The as-synthesized NiMn-LDH/GO material has been characterized through XRD, Raman spectroscopy. To access the morphology structure, the as-synthesized material has been characterized by scanning electron microscopy (SEM) and TEM techniques (Shandilya and Kumar, 2010). The application purpose adopted cyclic Voltammetry (CV) and galvanometric charging/discharging (GCD) techniques. GCD techniques are preferred with a three-electrode system due to better reliability.