多级镍钴层状双金属氢氧化物微球的简易合成
及其电化学性能
全文下载: 202205008.pdf
文章编号: 1672-6987(2022)05-0057-07; DOI: 10.16351/j.1672-6987.2022.05.008
董世豪a, 李镇江b, 范晓彦a*(青岛科技大学 a.数理学院; b.材料科学与工程学院,山东 青岛 266042)摘要: 通过简易的一步水热法制备了三维多级结构的多晶镍钴层状双金属氢氧化物(NiCo-LDHs)微球。研究了水热温度和水热时间对样品形貌的影响。研究发现:当水热温度为120 ℃时,可以得到由致密均匀的纳米线互相连接组装成的独特海胆状多级结构的NiCo-LDHs微球。在1 A·g-1下,它的比电容高达1 381 F·g-1。在10 A·g-1下,可以保持592%的比电容。
关键词: 镍钴层状双金属氢氧化物; 多级结构微球; 超级电容器; 比表面积
中图分类号:O 646 文献标志码: A
引用格式: 董世豪,李镇江,范晓彦.多级镍钴层状双金属氢氧化物微球的简易合成及其电化学性能[J]. 青岛科技大学学报(自然科学版), 2022, 43(5): 57-63.
DONG Shihao, LI Zhenjiang, FAN Xiaoyan. Facile synthesis of hierarchical nickel cobalt layered double hydroxide microspheres and its electrochemical properties[J]. Journal of Qingdao University of Science and Technology(Natural Science Edition), 2022, 43(5): 57-63.
Facile Synthesis of Hierarchical Nickel Cobalt Layered Double Hydroxide
Microspheres and Its Electrochemical Properties DONG Shihaoa, LI Zhenjiangb, FAN Xiaoyana
(a. College of Mathematics and Physics; b.College of Materials Science and Engineering,
Qingdao University of Science and Technology, Qingdao 266042, China)
Abstract: Poly-crystalline nickel cobalt layered double hydroxides (NiCo-LDHs) microspheres with three-dimensional (3D) urchin-like hierarchical structure are prepared by a facile one-step hydrothermal method without any templates. The effects of hydrothermal time and temperature on the its morphology are studied. Unique urchin-like hierarchical NiCo-LDHs microspheres composed of interconnected uniform nanowires are acquired at 120 ℃. The specific capacitance is as high as 1 381 F·g-1 at 1 A·g-1, and can be maintained 592% at 10 A·g-1.
Key words: supercapacitors; nickel cobalt layered double hydroxide; hierarchical microspheres; specific surface area
收稿日期: 2021-09-15
基金项目: 山东自然科学基金项目(ZR2020ME042);国家自然科学基金项目(52072196).
作者简介: 董世豪(1995—),男,硕士研究生.*通信联系人.