<p>In this paper, zinc–nickel–cobalt ternary metal oxides were selected as the research object, and novel Zn–Ni–Co ternary oxide nano-anode materials were successfully synthesized by a simple solvent-thermal method, and then the anode materials were made to have different numbers of folds by controlling the volume ratios of the components in the mixed solvents. The nano-anode material with more folds has a larger specific surface area, which gives it excellent electrochemical performance when used as an anode material for lithium-ion batteries. Electrochemical analysis of the ZnNiCoOn2 (methanol-to-water volume ratio of 3:4) nano-anode materials prepared from mixed solutions with different volume ratios showed that the ZnNiCoOn2 electrode was able to maintain a capacity of 377.7 mAh∙g⁻¹ when the current density is returned to 0.1 A g⁻¹ after rate performance tests, which was a good cycling performance. At different current densities, the ZnNiCoOn2 electrodes consistently delivered higher power output than the ZnNiCoOn1 (with a methanol-to-water volume ratio of 2:5) electrodes. When the current density was returned to 0.1 A g⁻¹, the ZnNiCoOn2 electrodes still maintained a capacity of 387.2 mAh g⁻¹. Considering their high electrochemical performance and simple preparation, we believe that these unique ZnNiCoOn2 nanosheets are promising anode materials for energy lithium-ion batteries. The novelty of this work lies in the precise control of the wrinkle density in Zn–Ni–Co ternary metal oxide nanosheets simply by adjusting the methanol-to-water volume ratio, which significantly enhances their lithium storage performance as anodes for lithium-ion batteries. This strategy offers a new insight into the efficient design and performance optimization of ternary oxide nanostructures.</p>