泡沫镍基底表面氢氧化镍电极材料的原位生长及其电化学性能测试  

In-Situ Growth and Electrochemical Performance Testing of a Nickel Hydroxide Electrode Material on the Surface of Nickel Foam Substrate

作　　者：董瑞婷 DONG Ruiting(College of Chemistry and Food Science,Nanchang Normal University,Nanchang 330032,China)

机构地区：[1]南昌师范学院化学与食品科学学院,江西南昌330032

出　　处：《河南科技》2023年第18期66-69,共4页Henan Science and Technology

基　　金：江西省教育厅科研项目(GJJ2202025、GJJ2202026);南昌师范学院校级科研项目(22XJZR01、22XJZR03)。

摘　　要：【目的】以泡沫镍网为基底和镍源,在温和条件下制备出低内阻的氢氧化镍电极材料。【方法】不加入任何镍源,应用两步活化法,在镍网表面原位生长出镍的氢氧化物,通过扫描电镜(SEM)对电极表面进行形貌分析,并进行电化学性能测试,探讨了活化方式、浸泡时间等影响因素对所得电极的形貌及电化学性能的影响。【结果】当电压窗口0~1.2 V,扫描圈数100圈,浸泡时间50 h所得电极在2 mA/cm2时,面积比电容高达1059 mF/cm2,远大于未活化或单一活化的电极。【结论】该方法温和、简单,原位生长的方式能够提高活性物质的机械附着性和利用率,为相关研究提供参考。[Purposes]A nickel hydroxide electrode material with low internal resistance has been synthe⁃sized using nickel foam as substrate and nickel source under mild conditions.[Methods]Nickel hydrox⁃ide was grown in-situ on the surface of nickel using a two-step activation method,Without adding any other sources of nickel.The electrode surface morphology was analyzed via scanning electron microscopy(SEM),and the electrochemical performance was evaluated.Additionally,factors such as activation method,soaking duration,and other variables on the morphology and electrochemical characteristics of the electrodes were examined.[Findings]Under the conditions of a voltage window of 0~1.2 V,100 scan⁃ning cycles,and a soaking time of 50 hours,the electrode obtained at a current density of 2 mA/cm2 ex⁃hibited an area specific capacitance of 1059 mF/cm2,which was significantly higher than that of the un⁃activated or singly activated electrode.[Conclusions]The method is gentle and straightforward,and the in-situ growth technique can enhance the mechanical adhesion and utilization of the active substances,thereby offering valuable insights for related research.

关 键 词：氢氧化镍电极 原位生长 活化法 超级电容器 

分 类 号：TQ138.13[化学工程—无机化工]