摘要
目的研究同一组成的镍锰氧化物电极材料作为超级电容器在3种碱性电解质溶液的电容性能。方法使用吸附法制备镍锰氧化物电极材料,通过X射线衍射(XRD)和扫描电镜(SEM)等表征手段,对镍锰氧化物的物相结构和微观结构进行表征,在电化学工作站进行三电极测试,表征在不同溶液中的电容性能。结果由球形碳酸锰吸附镍离子在600℃下煅烧10 h后,得到由纳米颗粒组成的球形镍锰氧化物,在电流密度为0.5 A/g,测试电压为0~0.45 V,在电解液KOH,NaOH,LiOH中,Ni_(0.5)Mn_(1.5)O_(3)超级电容器材料首次放电容量分别是50.0,43.6和36.4 F/g,在KOH溶液中的首次放电容量最高,且充放电循环1000次后,容量保持率在96%左右。结论KOH电解质溶液有利于增强Ni_(0.5)Mn_(1.5)O_(3)超级电容器的电容性能。
Purposes—To investigate the capacitive performances of Nickel-Manganese oxide as supercapacitors in different alkaline electrolyte.Methods—The Ni-Mn oxide electrode materials were prepared adsorption method.The composition and morphology of Ni-Mn oxides were characterized by X-ray diffraction(XRD)and scanning electron microscopy(SEM).The capacitive performance as supercapacitors in different electrolyte were tested three-electrode system.Result—The Ni-Mn oxide with spherical nanoparticle composition was obtained by adsorption of nickel ions with manganese carbonate followed by calcination at 600℃for 10 h.The initial discharge capacity of Ni_(0.5)Mn_(1.5)O_(3) as supercapacitor in different electrolyte(KOH,NaOH,LiOH)deliver 50,43.6 and 36.4 F/g,at the current density of 0.5 A/g with the voltage of 0~0.45 V.After charging and discharging for 1000 cycles in KOH electrolyte,the capacity retention rate remains 96%.Conclusion—The KOH electrolyte is beneficial to the capacitive performance of Ni_(0.5)Mn_(1.5)O_(3) as supercapacitor.
作者
谭丹
秦梓翔
窦树梅
李慧勤
卫粉艳
任莉君
TAN Dan;QIN Zi-xiang;DOU Shu-mei;LI Hui-qin;WEI Fen-yan;REN Li-jun(Engineering of Research Center of Advanced Ferroelectric Functional Materials, Shaanxi Key Laboratory of Phytochemistry,College of Chemistry and Chemical Engineer, Baoji University of Arts and Sciences, Baoji 721013, Shaanxi, China)
出处
《宝鸡文理学院学报（自然科学版）》
CAS
2021年第4期28-33,共6页
Journal of Baoji University of Arts and Sciences(Natural Science Edition)
基金
国家自然科学基金项目(51702006)
陕西省教育厅专项科研计划项目(18JK0053)。
关键词
超级电容器
镍锰氧化物
碱性电解质溶液
电容性能
supercapacito
Nickel-Manganese oxide
alkaline electrolyte
capacitive performance
