氧化锰纳米颗粒的低温水热合成及其电化学性能

硅酸盐通报 ›› 2018, Vol. 37 ›› Issue (2): 682-685.

氧化锰纳米颗粒的低温水热合成及其电化学性能

朱刚;王留昌;邸琴;韩枭;薛敏

西安文理学院化学工程学院,陕西省表面工程与再制造重点实验室,西安710065

出版日期:2018-02-15 发布日期:2021-01-18
基金资助:
国家自然科学基金(21403166)%西安市科技计划项目(2016CXWL08,CXY1443WL21)%2016年陕西省大学生创新创业项目(20162331)

Low-temperature Hydrothermal Synthesis and Electrochemical Performance of Manganese Oxide Nanoparticles

ZHU Gang;WANG Liu-chang;DI Qin;HAN Xiao;XUE Min

Online:2018-02-15 Published:2021-01-18

摘要/Abstract

摘要： 基于高锰酸钾和葡萄糖之间的氧化还原反应,采用低温水热法合成了氧化锰纳米颗粒材料.应用X-射线衍射、扫描电镜和氮气吸脱附技术对所得材料的结构、形貌和表面性质进行表征.结果表明,所得材料为低结晶性Birnessite型层状氧化锰,比表面积为129 m2/g.电化学测试结果显示,氧化锰纳米颗粒负极材料具有较高的比容量、较好的循环性能和倍率性能.在100 mA/g的电流密度下,首次放电比容量为635 mAh/g.恒流充放电130次后,容量保持率为65.4％.

关键词: 氧化锰纳米颗粒;水热合成;大比表面积;电极材料

Abstract: Manganese oxide nanoparticles have been synthesized based on redox reaction between KMnO4 and glucose with a low-temperature hydrothermal method.The obtained material is characterized by X-ray diffraction,scanning electron microscopy and N2 adsorption-desorption.Results show that the product is Birnessite-type layered manganese oxide with low crystallinity and the specific surface area is 129 m2/g.Electrochemical measurements indicate manganese oxide has high specific capacity,good cycling performance and rate capability as an anode material.It exhibits an initial discharge capacity of 635 mAh/g at the current density of 100 mA/g.And the capacity retention reaches 65.4％ after 130 cycles.

Key words: manganese oxide nanoparticle;hydrothermal synthesis;large specific surface area;electrode material

中图分类号:

O614.7+1

朱刚;王留昌;邸琴;韩枭;薛敏. 氧化锰纳米颗粒的低温水热合成及其电化学性能[J]. 硅酸盐通报, 2018, 37(2): 682-685.

ZHU Gang;WANG Liu-chang;DI Qin;HAN Xiao;XUE Min. Low-temperature Hydrothermal Synthesis and Electrochemical Performance of Manganese Oxide Nanoparticles[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2018, 37(2): 682-685.