碳酸根插层镍钴层状双氢氧化物纳米笼的制备及其超级电容器性能研究  

Preparation of Carbonate-intercalated Nickel-cobalt Layered Double Hydroxides and Study of Their Performance in Supercapacitors

作　　者：赵钰滢 迟锦耀 王春凤 王雯娜 肖振宇[1] 邓英[1] Zhao Yuying;Chi Jinyao;Wang Chunfeng;Wang Wenna;Xiao Zhenyu;Deng Ying(Qingdao University of Science and Technology,Shandong,266045;Shandong Shouguang Testing Group Co.,Ltd.,Shandong,262700)

机构地区：[1]青岛科技大学,山东266045 [2]山东寿光检测集团有限公司,山东262700

出　　处：《当代化工研究》2025年第2期188-190,共3页Modern Chemical Research

基　　金：国家自然科学基金项目“界面调控刻蚀策略构筑高能量密度超级电容器电极材料及其性能研究”(项目编号:52372205);青岛科技大学2021年大学生创新训练计划“锂离子电池硅碳复合材料的制备及电化学性能研究”(项目编号:202310426020)。

摘　　要：为应对日益严峻的能源危机和环境挑战,开发具有高效能量转换和存储能力的电极材料成为科研领域的研究热点。研究以ZIF-67为前驱体,先在其表面包覆镍钴层状双氢氧化物,再通过不同尿素含量(100 mg、200 mg、300 mg)进行刻蚀,合成三种具有CO_(3)^(2-)插层的镍钴层状双氢氧化物(C-NC-LDH-100、C-NC-LDH-200、C-NC-LDH-300)。通过SEM、TEM、PXRD和电化学测试对得到的电极材料进行结构和电化学性能的表征。优化后的C-NC-LDH-200具有最优异的电化学性能,在1 A·g^(-1)电流密度下具有1226 F·g^(-1)的比电容。进一步组装了C-NC-LDH-200//AC非对称超级电容器器件,在0.36 kW·kg^(-1)的功率密度下,具有58.70 Wh·kg^(-1)的高能量密度,具有高循环稳定性和实际应用前景。To address the increasingly severe energy crisis and environmental challenges,developing electrode materials with efficient energy conversion and storage capabilities has become a hot topic in research.ZIF-67 is used as a precursor,initially coated with nickel-cobalt layered double hydroxides,and then etched with different urea amount(100 mg,200 mg,300 mg)to synthesize three types of CO_(3)^(2-) intercalated nickel-cobalt layered double hydroxides(C-NC-LDH-100,C-NC-LDH-200,C-NC-LDH-300).The structure and electrochemical properties of the resulting electrode materials are characterized using SEM,TEM,PXRD,and electrochemical testing.The optimized C-NC-LDH-200 exhibits outstanding electrochemical performance,achieving a specific capacitance of 1226 F·g^(-1) at a current density of 1 A·g^(-1).Further,an asymmetric supercapacitor device C-NC-LDH-200//AC is assembled,demonstrating a high energy density of 58.70 Wh·kg^(-1) at a power density of 0.36 kW·kg^(-1),with high cycle stability and promising prospects for practical applications.

关 键 词：金属有机框架 层状双氢氧化物 中空结构 超级电容器 

分 类 号：O614.81[理学—无机化学]