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乙二醇为还原剂制备铁掺杂二氧化锰及其电容特性研究 被引量:6

Enhanced Electrochemical Properties of Fe-doped Manganese Oxides Synthesized Using Glocol as Reductant
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摘要 通过简单的液相沉淀法制备出棉絮状二氧化锰纳米颗粒,采用掺杂铁离子的方式对二氧化锰进行改性。热重曲线显示,掺杂Fe之后增加了产物中结合水的含量。由SEM可知,加入铁离子之后并没有改变二氧化锰的表面形貌,XRD与面扫结果表明铁离子以均一的方式掺杂到了二氧化锰中。循环伏安与恒电流充放电测试了材料的电化学性能,结果显示当掺杂量为2%时材料具有最好的电化学性能,担载量为3 mg·cm-2的情况下,放电比容量高达347.0 F·g-1,循环1000圈后容量的保持率为81.4%。 A simple liquid-phase process for the fabrication of iron doped manganese oxides nanoparticles was developed by using potassium permanganate as the source of manganese,glycol as reducing agent and iron ion as dopant.Differential thermal analyzer shows that the bound water content increasing with the addition of iron.XRD and Mapping suggest that iron ion has been doped into manganese oxides.the electrochemical properties of the prepared materials are studied using cyclic voltammetry(CV) and galvanostatic charge-discharge test in aqueous electrolyte.The product of Mn-Fe-2.0 shows a very high specific capacity of 347.0 F g-1 and retain 81.4% after 1000 cycles.
出处 《硅酸盐通报》 CAS CSCD 北大核心 2016年第6期1873-1876,1882,共5页 Bulletin of the Chinese Ceramic Society
基金 安徽省人才基金(gxfx ZD2016176) 安徽省自然科学重点基金(KJ2013A079) 材料科学与工程重点学科(AKZDXK2015A01) 安徽高校自然科学研究项目(KJ2016A171) 安徽科技学院大学生创新创业训练计划项目(16XCX35)资助 安徽科技学院自然科学研究项目(ZRC2016486)
关键词 二氧化锰 液相沉淀 铁掺杂 超级电容器 manganese oxides liquid-phase method iron doped supercapacitor
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参考文献13

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