山东化工2024，Vol.53Issue(21) ：24-27.

不同方法制备MnO2及其在锌基电池正极材料中的研究

Preparation of MnO2 by Different Methods and Its Application in Zinc-based Battery Cathode Materials

张绍丽 吴文茹 陆凤莲 龙云 李青青 吴爱菊 韦朝艳 李琳
山东化工2024，Vol.53Issue(21) ：24-27.
✕
  • 万方数据

不同方法制备MnO2及其在锌基电池正极材料中的研究

Preparation of MnO2 by Different Methods and Its Application in Zinc-based Battery Cathode Materials

张绍丽 1吴文茹 1陆凤莲 1龙云 1李青青 1吴爱菊 1韦朝艳 1李琳1
扫码查看

作者信息

  • 1. 六盘水师范学院化学与材料工程学院,贵州六盘水 553004
  • 折叠

摘要

以高锰酸钾和硫酸锰为原料,分别使用了水热法和共沉淀法制备MnO2,采用了红外光谱(FTIR)、X射线衍射(XRD)以及扫描电子显微镜(SEM)对其结构进行了表征.同时,组装了以MnO2为正极、1 mol/L硫酸锌水溶液为电解液、锌片为负极的电池体系,测定不同方法制备的MnO2在水系锌基电池正极材料中的电化学性能.研究表明,水热法制备的MnO2具有更优异的电化学性能,在100 mA的充放电电流下,最高放电比容量达到333.2 mAh/g,充电比容量达到330.6 mAh/g,首次循环效率为96.1％,在进行100个循环后,效率达到 99.8％.

Abstract

In this paper,MnO2 was prepared from potassium permanganate and manganese sulfate by hydrothermal method and coprecipitation method,respectively.The structure of MnO2 was characterized by infrared spectroscopy(FTIR),X-ray diffraction(XRD)and scanning electron microscopy(SEM).At the same time,a battery system with MnO2 as the positive electrode,1M zinc sulfate solution as the electrolyte and zinc sheet as the negative electrode was assembled,and the electrochemical properties of MnO2 prepared by different methods in the positive electrode material of the aqueous zinc-based battery were measured.The results show that MnO2 prepared by hydrothermal method has better electrochemical performance.At 100 mA charge-discharge current,the highest specific discharge capacity reaches 333.2 mAh/g,the specific charging capacity reaches 330.6 mAh/g,the first cycle efficiency is 96.1％,and after 100 cycles,the efficiency reaches 99.8％.

关键词

水系锌基电池/正极材料/水热法/MnO2

Key words

aqueous zinc ion battery/cathode material/hydrothermal method/MnO2

引用本文复制引用

出版年

2024
山东化工
山东省化工研究院 山东省化工信息中心

山东化工

影响因子：0.249
ISSN：1008-021X
段落导航相关论文