泡沫镍原位制备NH_(4)NiPO_(4)纳米棒电极材料及其电化学性能研究  

In-situ Preparation of NH_(4)NiPO_(4)Nanorod Electrode Materials with Nickel-foam and Their Electrochemical Performance

作　　者：王智禹 沈苗 杨春明[2] WANG Zhi-yu;SHEN Miao;YANG Chun-ming(Medical College,Hunan Normal University,Changsha 410081,China;College of Chemistry and Chemical Engineering,Hunan Normal University,Changsha 410081,China;College of Pharmaceutical and Bioengineering,Hunan Polytechnic of Chemical Industry,Zhuzhou 412000,China)

机构地区：[1]湖南师范大学医学院,中国长沙410081 [2]湖南师范大学化学化工学院,中国长沙410081 [3]湖南化工职业技术学院制药与生物工程学院,中国株洲412000

出　　处：《湖南师范大学自然科学学报》2021年第5期108-115,共8页Journal of Natural Science of Hunan Normal University

基　　金：湖南省科技计划重点项目(2011GK2014)。

摘　　要：直接利用泡沫镍(NF)制造新型自支撑NH_(4)NiPO_(4)@NF纳米棒电极,不仅降低负载,而且有效利用基底表面积,提高电化学性能。所制备的NH_(4)NiPO_(4)@NF电极在10 A·m^(-2)的电流密度下具有12060 F·m^(-2)的高比电容;在200 A·m^(-2)电流密度下,经过2000圈的充放电循环,比电容的保留量为其初始电容的123.61%。此外,组装得到非对称全固态超级电容器(ASC)装置NH_(4)NiPO_(4)@NF//NF,该装置在375 mW·g^(-1)的功率密度下可提供26.12 mWh·g^(-1)的能量密度,在3000圈循环后稳定性依然保持100%。利用扫描电镜(SEM)、X射线衍射(XRD)和X射线光电子能谱(XPS)对所得电极进行物理表征。该NH_(4)NiPO_(4)@NF电极可以备选用于储能设备高性能电化学材料。In this work,a new type of self-supporting NH_(4)NiPO_(4)@NF nanorod electrode is directly made by using the nickel foam(NF)source.It can not only reduce the load,but also effectively utilize the surface area of active substances to enhance electrochemical performance.The NH_(4)NiPO_(4)@NF electrode has the specific capacitance of 12060 F·m^(-2)at the current density of 10 A·m^(-2).At the current density of 200 A·m^(-2),the retention of the specific capacitance is 123.61%of its initial capacitance after 2000 cycles of charge discharge.In addition,the energy density of 26.12 mWh·g^(-1) can be provided by assembling the asymmetric all-solid-state super capacitor(ASC)NH_(4)NiPO_(4)@NF//NF device at the power density of 375 mW·g^(-1),and the stability of the device remains 100%after 3000 cycles.The physical characteristics of the electrode were analyzed by scanning electron microscope(SEM),X-ray diffraction(XRD)and X-ray photoelectron spectroscopy(XPS).This as-obtained NH_(4)NiPO_(4)@NF electrode could be applied as high-performance electrochemical materials for energy storage.

关 键 词：非对称超级电容器 NH_(4)NiPO_(4) 泡沫镍 纳米棒 

分 类 号：TQ152[化学工程—电化学工业] O614[理学—无机化学]