四氧化三钴纳米材料的制备及其电化学性能研究  

Preparation of Co_(3)O_(4)Nanomaterials and Its Electrochemical Performance

作　　者：张惠萱 字敏[1] Zhang Huixuan;Zi Min(Faculty of Chemistry and Chemical Engineering,Yunnan Normal Uiversity,Kunming 650500,China)

机构地区：[1]云南师范大学化学化工学院,云南昆明650500

出　　处：《山东化工》2022年第9期26-29,32,共5页Shandong Chemical Industry

摘　　要：Co_(3)O_(4)材料的资源较为丰富、能量密度较高、催化活性较高、对环境比较友好,一直被视为很有前景的电极材料而成为大家重点研究对象。本文提出在液相中,利用简单的液相合成法,将硝酸钴作为钴源,将Na OH作为碱源,合成的Co(OH)_(2)作为中间体,再在体系中加入H_(2)O_(2)进行氧化,制备Co_(3)O_(4)纳米材料,该过程可以简单的表示为Co(OH)_(2)→Co_(3)O_(4),电化学性能测试,发现Na OH作为碱源时,所制备的Co_(3)O_(4)纳米材料比电容是最大的,在电流密度为2 A獉g-1的条件下,比电容为130.22 F∙g^(-1)。Co_(3)O_(4)has been regarded as a promising electrode material due to its rich resources,high energy density,high catalytic activity and environmental friendliness.In this paper,Co_(3)O_(4)nanomaterials were synthesized via a simple aqueous method by using Co(NO_(3))_(2)as cobalt source and NaOH as source for synthesis of Co(OH)_(2)intermediates,then add in the system of oxidant H_(2)O_(2).The transformation of Co(OH)_(2)→Co_(3)O_(4)were also proposed.Electrochemical tests shows that Co_(3)O_(4)nanomaterials prepared using NaOH as alkali with higher specific capacity of 130.22 F∙g^(-1)at current density of 2 A∙g^(-1).

关 键 词：Co_(3)O_(4)纳米材料 液相合成 超级电容器 

分 类 号：TQ138.12[化学工程—无机化工]