SU Zhan,YU Jinshan,PEI Feng,et al.Preparation of NiCo2O4 Supercapacitor Electrode Materials with Controllable Morphology by Solvent-Thermal Method and Research of Their Properties[J].Plating & Finishing,2021,(12):1-6.[doi:10.3969/j.issn.1001-3849.2021.12.001]
溶剂热法制备形貌可控的NiCo2O4超电材料及其性能研究
- Title:
- Preparation of NiCo2O4 Supercapacitor Electrode Materials with Controllable Morphology by Solvent-Thermal Method and Research of Their Properties
- 文献标志码:
- A
- 摘要:
- 采用溶剂热法，通过改变溶剂的组成，合成了具有微球簇状、片层、针状和海胆结构的NiCo2O4样品，探讨了不同相貌结构的形成原因，考察了样品的电化学性能。实验结果表明，水热反应中溶剂比例不同，其介电常数不同，从而影响合成产物NiCo2O4形貌。针状结构的NiCo2O4-15样品有着94.032 m2/g的高比表面积，在1 A/g的电流密度下比电容高达1808.6 F/g，同时在10 A/g电流密度下循环1000次后容量保持率为80 %，表现出优良的电化学性能和循环稳定性，在超级电容器材料领域具有应用前景。
- Abstract:
- NiCo2O4 samples with the structure of microsphere cluster, lamellar, needle and sea urchin were synthesized by solvothermal method with different solvent composition. The formation reasons of different morphologies and structures were discussed and the electrochemical properties of the samples were investigated. The experimental results show that the different proportion of solvent in the hydrothermal reaction will lead to different dielectric constant, and finally affect the morphology of the synthetic product NiCo2O4. The needle structure NiCo2O4-15 sample has a high specific surface area of 94.032 m2/g, with a specific capacitance of 1808.6 F/g at the current density of 1 A/g, and a capacity retention rate of 80 % after circulating 1000 times at the current density of 10 A/g. The excellent electrochemical performance and cyclic stability indicate that it has a broad application prospect in the field of supercapacitor materials.
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备注/Memo
收稿日期： 2020-04-24；修回日期： 2020-05-26
*通信作者： 王宏智（1973—），男，博士，副教授，主要研究方向：新能源材料、金属基复合材料、电沉积与化学沉积等。