Hierarchical NiO/reduced graphene oxide (rGO) nanohybrids with tunable microstructures were fabricated via the thermal decomposition of Ni(OH)₂/rGO formed by the electrostatic attraction between exfoliated Ni(OH)₂ and GO nanosheets. Characterization study revealed that the size of intercalated NiO nanocrystals could be tuned from 2 nm to 10 nm, and the specific surface area of optimized nanohybrids reached to 255 m²/g. Ionogel polymer electrolyte was prepared by entrapping ionic liquid (EMImBF₄) and lithium salt (LiTFSI) into copolymer (PVdF-HFP). Effect of NiO particle size on the electrochemical performances was evaluated systemically. Asymmetric supercapacitors with as-prepared nanohybrids as anode and commercial activated carbon as cathode were assembled. Aqueous 6 M KOH solution, organic LiPF₆ solution and ionogel polymer were utilized as electrolytes to check their compatibility with nanohybrids. Our study shows that supercapacitors exhibit energy densities of 31.6 Wh/kg, 49 Wh/kg and 146 Wh/kg, respectively, with the above mentioned electrolytes. These results clearly demonstrate that high performance can be actualized by the subtle combination of hybridized electrodes with high voltage formulated ionogel polymer electrolytes.

通过片状Ni（OH）₂和GO纳米片之间的静电吸引作用形成的Ni（OH）₂ / rGO热分解，制备了具有可调微结构的分层NiO /还原氧化石墨烯（rGO）纳米杂化物。表征研究表明，嵌入的NiO纳米晶体的尺寸可以从2 nm调整到10 nm，并且优化的纳米杂化物的比表面积达到255 m ² / g。通过截留离子液体（EMImBF ₄）和锂盐（LiTFSI）制成共聚物（PVdF-HFP）。系统评价了NiO粒径对电化学性能的影响。组装了以制备的纳米杂化物为阳极，商业活性炭为阴极的不对称超级电容器。使用6 M KOH水溶液，有机LiPF ₆溶液和离子凝胶聚合物作为电解质，以检查它们与纳米杂化物的相容性。我们的研究表明，使用上述电解质，超级电容器的能量密度分别为31.6 Wh / kg，49 Wh / kg和146 Wh / kg。这些结果清楚地表明，通过将混合电极与高压配制的离子凝胶聚合物电解质进行微妙的组合，可以实现高性能。