摘要
超级电容器是近年来电化学储能器件研发的热点之一,其电极材料对其性能起决定性作用。为了合成具有优异超电容性能的NiCo基二维层状双氢氧化物(LDH)电极材料,首先通过一步水热法在泡沫镍网表面制备NiCo-LDH纳米阵列;然后在水-乙二醇体系下,通过二次溶剂热反应,制备偏钒酸根掺杂的NiCo-LDH纳米阵列;最后,通过碱转化得到性能优异的电极材料。用此电极与活性碳组装成全固态不对称超级电容器件,在电压为0~1.8 V、功率密度为9 mW/cm^(2)时,器件的能量密度达0.416 mW·h/cm^(2),且具有良好的循环稳定性。
Supercapacitor is one of the hot spots in the research and development of chemical energy storage devices in re⁃cent years,and electrode materials play a decisive role in its performance.In order to synthesize NiCo based two⁃dimen⁃sional layered double hydroxide(LDH)electrode materials with excellent supercapacitor performance,NiCo-LDH nanoar⁃rays were first prepared on the surface of Ni foam by one⁃step hydrothermal method.Then,in a water⁃glycol system,VO3-doped NiCo-LDH nanoarrays were prepared through a secondary solvothermal reaction.Finally,electrode materials with ex⁃cellent performance were obtained through alkali conversion.Using this electrode and activated carbon to assemble an all solid⁃state asymmetric supercapacitor device,the device showed an energy density of 0.416 mW·h/cm^(2) at a voltage of 0 to 1.8 V and a power density of 9 mW/cm^(2),and it had good cycle stability.
作者
许雪棠
王煦凯
张申鹤
黄美香
农舒柳
许诺
XU Xuetang;WANG Xukai;ZHANG Shenhe;HUANG Meixiang;NONG Shuliu;XU Nuo(School of Chemistry and Chemical Engineering,Guangxi University,Nanning 530004,China)
出处
《无机盐工业》
CAS
CSCD
北大核心
2023年第5期52-58,共7页
Inorganic Chemicals Industry
基金
国家自然科学基金项目(22065003)
广西大学“大学生创新创业训练计划”资助项目(202110593026)。
