水热合成MnOOH纳米片超电容电极材料
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- 英文论文题名：Hydrothermal synthesis of MnOOH nanosheets for supercapacitors electrode
- 论文作者：王露 ; 罗洁 ; 朱丹 ; 刘天宇 ; 刘孝恒
- 英文论文作者：Lu Wang ; Jie Luo ; Dan Zhu ; Tianyu Liu ; Xiaoheng Liu ; Key Laboratory of Education Ministry for Soft Chemistry and Functional Materials ; Nanjing University of Science and Technology ; Key Laboratory of Education Ministry Functional for Molecular Solids ; College of Chemistry and Materials Science ; Anhui Normal University
- 年：2016
- 作者机构：南京理工大学软化学与功能材料教育部重点实验室;安徽师范大学化学与材料学院功能分子固体重点实验室;
- 论文关键词：MnOOH ; 纳米晶 ; 超级电容器 ; 比电容
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十七分会：纳米催化
- 语种：中文
- 分类号：TM53
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十七分会 ; 纳米催化
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：136k
- 原文格式：D
- 会议级别：全国
摘要
超级电容器由于功率高、寿命长且环保成为新能源领域的研究热点,其性能优劣的关键取决于电极材料。本文中我们以四水合乙酸锰为锰源,十六烷基三甲基溴化铵为分散剂,通过水热处理,成功制备出MnOOH纳米片。采用TEM、XRD等手段对材料的晶型和微观形貌进行表征。XRD结果显示在180℃下水热11小时后,产物结晶性好,结构稳定(JCPDS No.41-1379)。TEM照片(Fig.1)表明MnOOH纳米片具有规则的四边形形貌,大小基本一致,约为20 nm左右,且没有明显团聚。我们采用涂覆法制备MnOOH工作电极。分别以铂片、Hg/HgO作为对电极和参比电极,在三电极体系中通过循环伏安、交流阻抗和恒电流充放电技术评估MnOOH纳米片的电化学性能。MnOOH纳米片在电流密度0.5 A·g~(-1)下比电容高达264 F·g~(-1);电流密度为1A·g~(-1)时,经过1000次恒电流充放电,MnOOH纳米片的比电容保留率高达91%。电化学分析结果证实MnOOH纳米片在储能电极材料方面具有潜在的应用价值。
In this report,we obtained MnOOH nanosheets for high-performance supercapacitors electrode through hydrothermal treatment.MnOOH nanosheets were characterized by TEM,X-ray diffraction,and electrochemical experiments.The results revealed the product have a pure crystalline phase and a uniform quadrilateral morphology with the size of about 20 nm.To assess the properties of MnOOH nanosheets for their use in supercapacitors,cyclic voltammetry,electrochemical impedance spectroscopy and galvanostatic charging-discharging tests were performed.MnOOH nanosheets exhibit an outstanding electrochemical performance with high specific capacitance of 264 F·g~(-1) at 0.5 A·g~(-1) and satisfying cycling life of minor loss of 9% after 1000 cycles as an electrode material for supercapacitor.
In this report,we obtained MnOOH nanosheets for high-performance supercapacitors electrode through hydrothermal treatment.MnOOH nanosheets were characterized by TEM,X-ray diffraction,and electrochemical experiments.The results revealed the product have a pure crystalline phase and a uniform quadrilateral morphology with the size of about 20 nm.To assess the properties of MnOOH nanosheets for their use in supercapacitors,cyclic voltammetry,electrochemical impedance spectroscopy and galvanostatic charging-discharging tests were performed.MnOOH nanosheets exhibit an outstanding electrochemical performance with high specific capacitance of 264 F·g~(-1) at 0.5 A·g~(-1) and satisfying cycling life of minor loss of 9% after 1000 cycles as an electrode material for supercapacitor.
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