一种高容量茴香状硫化铜柔性电极的制备及其在超级电容器中的应用  

Preparation of a high capacity fennel shaped flexible copper sulfide electrode and its application in supercapacitors

作　　者：李星 龚神根 孙海珠 LI Xing;GONG Shen-gen;SUN Hai-zhu(Faculty of Chemistry,National and Local Joint Engineering Laboratory of Power Battery,Northeast Normal University,Changchun 130024,China)

机构地区：[1]东北师范大学化学学院,动力电池国家地方联合工程实验室,吉林长春130024

出　　处：《分子科学学报》2023年第2期104-110,共7页Journal of Molecular Science

基　　金：国家自然科学基金资助项目(22035001,51433003,21574018);中央高校基本科研业务费专项资金资助项目(2412019ZD002)。

摘　　要：柔性电极由于在可穿戴电子设备领域具有重要应用而备受关注,然而其制备工艺繁琐、价格昂贵、负载量低和比容量低等问题限制了其发展.为解决这些问题,迫切需要开发负载量大、比容量高的柔性电极材料.本文利用简单的化学电镀和低温固相反应方法,制备了茴香状的CuS@CPCC-24柔性电极材料.这种紧密堆砌的薄片具有大量的孔隙,能够提供足够的活性位点,进而有效增加存储电荷的能力.结果表明,CuS@CPCC-24柔性电极不仅在电流密度为2 mA·cm^(-2)时可达到1150.2 mF·cm^(-2)的最大电容,而且循环稳定性较好,展现了其在柔性储能器件领域具有潜在应用.In the era of rapid development of wearable portable electronic devices,flexible supercapacitors(FSCs)will effectively expand the practical application range of energy storage devices.The device not only requires a certain mechanical strength,but also has a high energy that is the most important function as an energy storage device.Although there have been a lot of research work to find better energy storage equipment,it has not yet achieved the expected function,which restricts the development of wearable electronic devices in a great extent.In particular,flexible electrode is faced with many problems such as complicated preparation process,high cost,low loading capacity and low specific capacity.Therefore,it is urgent to develop new materials with ideal structure to obtain FSCs with high power and high energy density.CuS has attracted much attention because of its rich elements,environmental friendliness and high theoretical capacity.Therefore,researchers prepare many structures based on CuS,such as nanowires,nanosheets,microspheres and nanoflowers,which lays a foundation for the practical application of FSCs.However,the electrochemical performance of pure CuS,especially its cyclic stability,is not as good as expected as most pseudocapacitor materials.To solve this problem,people have to introduce other kinds of highly conductive materials.Some researchers even reduce resistance by reducing the addition of binders,thereby reducing the loss of capacitance and energy density.However,such an approach makes the conductivity improvement limited,because it does not solve the fundamental problem of poor conductivity of CuS.Therefore,the preparation of CuS based active materials with high capacity and high flexibility is still a challenge.In this paper,hexagonal fennel like CuS@CPCC-24 flexible material was prepared by simple electroless plating and low temperature solid phase reaction,and used as electrode material for supercapacitor.The formation process of the hexagonal anise-shaped CuS is gradually assembled from s

关 键 词：柔性电极 CUS 茴香状 超级电容器 

分 类 号：O631[理学—高分子化学]