水热法制备NiMoO4纳米材料及其电化学性能的研究
Preparation of NiMoO4 Nanomaterials by Hydrothermal Method and Their Electrochemical Properties
艾振宇 1林洪广 1李靖1
作者信息
- 1. 上海第二工业大学能源与材料学院,上海 201209
- 折叠
摘要
NiMoO4纳米材料在新型绿色电池、超级电容器等方面具有潜在的应用价值,利用水热法制备NiMoO4纳米材料,探究不同反应温度对制备材料的表面形貌、结构和电化学性能的影响.研究结果表明,150 ℃反应6 h制备的NiMoO4样品呈现纳米纤维形貌,而且表现出最佳的超级电容器性能.当放电电流密度为0.5 A/g时,其比电容达到600 F/g,即使在10 A/g时,NiMoO4电极仍然能够保持300 F/g的比电容.此外,NiMoO4电极表现出优异的循环寿命,经过6 000次循环充放电(放电电流密度为5 A/g),仍然保持其初始比电容的97％.优异的循环稳定性使NiMoO4成为一种极具前景的高性能超级电容器材料.
Abstract
NiMoO4 nanomaterials have potential applications in new green batteries,supercapacitors,and so on.The hydrothermal method was used to prepare the NiMoO4i nanomaterials.The effects of different reaction temperatures on the surface morphology,structure and electrochemical properties of the prepared materials have been investigated.The results showed that NiMoO4 samples prepared at 150 ℃ for 6 h had nanofiber morphology and exhibited the best supercapacitor performance.When the discharge current density was 0.5 A/g,the specific capacitance reached 600 F/g.The NiMoO4 electrode can still maintain a specific capacitance of 300 F/g even at 10 A/g.In addition,the NiMoO4 electrode presented excellent cycle life,retaining 97％of its initial specific capacitance after 6 000 charge/discharge cycles(at a discharge current density of 5 A/g).The excellent cyclic stability of NiMoO4 makes it become a promising material for high-performance supercapacitors.
关键词
钼酸镍/纳米纤维/水热法/超级电容器Key words
nickel molybdate/nanofibers/hydrothermal method/supercapacitors引用本文复制引用
出版年
2024
NETL
NSTL
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