基于水热法的V_(2)O_(5)纳米颗粒制备及其电化学性能  

Preparation and Electrochemical Performance of V_(2)O_(5) Nanoparticles Based on Hydrothermal Method

作　　者：刘万能 叶浩然 倪航 田玉[1] 朱小龙[1] 郑广[1] LIU Wanneng;YE Haoran;NI Hang;TIAN Yu;ZHU Xiaolong;ZHENG Guang(Key Laboratory of Optoelectronic Chemical Materials and Devices,Ministry of Education,Jianghan University,Wuhan 430056,Hubei,China;Electronic Information School,Wuhan University,Wuhan 430072,Hubei,China)

机构地区：[1]江汉大学光电化学材料与器件教育部重点实验室,湖北武汉430056 [2]武汉大学电子信息学院,湖北武汉430072

出　　处：《江汉大学学报（自然科学版）》2022年第1期11-18,共8页Journal of Jianghan University：Natural Science Edition

基　　金：国家自然科学基金面上项目(61575085);湖北省科技计划项目(2017CFB354)。

摘　　要：V2O5是一种具有层状结构的金属氧化物电极材料,具有较高的理论比电容,通过不同方法可以制备出不同形貌的晶体V_(2)O_(5)微纳材料。为了进一步提升V2O5电极材料的电化学性能,以V2O5粉末为原料,使用水热法在碳布上制备出V_(2)O_(5)前躯体,经过300℃退火制备出平均直径为80 nm的V_(2)O_(5)纳米颗粒,研究了不同V2O5粉末添加量和退火温度对产物形貌的影响。对退火后的V_(2)O_(5)纳米颗粒碳布电极进行电化学性能测试,结果表明该电极具有良好的电化学活性和循环可逆性,电流密度为1 A/g时,比电容为678.6 F/g,具有较优异的倍率性能,较低的内阻,可作为超极电容器的电极材料。V_(2)O_(5) is a metal oxide electrode material with a layered structure and high theoretical specific capacitance.By changing the preparation method,crystal V_(2)O_(5) micro-/nano materials with different morphologies can be prepared.To further improve the electrochemical performance of the V_(2)O_(5) electrode material,this paper used V_(2)O_(5) powder as the raw material to prepare the V_(2)O_(5) precursor on the carbon cloth using the hydrothermal method.After annealing at 300℃,the V2O5 nanoparticles with an average diameter of 80 nm were prepared.The effect of different V2O5 powder addition and annealing temperature on the morphology of the product was discussed.The electrochemical performance of the annealed V_(2)O_(5) nanoparticle carbon cloth electrode was tested.The results showed that the electrode had good electrochemical activity and cycle reversibility.When the current density was 1 A/g,the specific capacitance was 678.6 F/g.It has better rate performance and lowers internal resistance.It can be applied as a supercapacitor electrode material.

关 键 词：V_(2)O_(5)纳米颗粒 比电容 V_(2)O_(5)碳布电极 水热法 

分 类 号：TM912.9[电气工程—电力电子与电力传动]