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高性能锂离子电池负极材料一氧化锰/石墨烯复合材料的合成

苗小飞 刘永川 张祥昕 陈素晶 陈远强 张易宁

苗小飞, 刘永川, 张祥昕, 陈素晶, 陈远强, 张易宁. 高性能锂离子电池负极材料一氧化锰/石墨烯复合材料的合成[J]. 工程科学学报, 2017, 39(3): 407-416. doi: 10.13374/j.issn2095-9389.2017.03.013
引用本文: 苗小飞, 刘永川, 张祥昕, 陈素晶, 陈远强, 张易宁. 高性能锂离子电池负极材料一氧化锰/石墨烯复合材料的合成[J]. 工程科学学报, 2017, 39(3): 407-416. doi: 10.13374/j.issn2095-9389.2017.03.013
MIAO Xiao-fei, LIU Yong-chuan, ZHNAG Xiang-xin, CHEN Su-jing, CHEN Yuan-qiang, ZHANG Yi-ning. Synthesis of MnO/reduced graphene oxide composites as high performance anode materials for Li-ion batteries[J]. Chinese Journal of Engineering, 2017, 39(3): 407-416. doi: 10.13374/j.issn2095-9389.2017.03.013
Citation: MIAO Xiao-fei, LIU Yong-chuan, ZHNAG Xiang-xin, CHEN Su-jing, CHEN Yuan-qiang, ZHANG Yi-ning. Synthesis of MnO/reduced graphene oxide composites as high performance anode materials for Li-ion batteries[J]. Chinese Journal of Engineering, 2017, 39(3): 407-416. doi: 10.13374/j.issn2095-9389.2017.03.013

高性能锂离子电池负极材料一氧化锰/石墨烯复合材料的合成

doi: 10.13374/j.issn2095-9389.2017.03.013
基金项目: 

国家自然科学基金青年基金项目(51602310);福建省科学技术资助项目(2014H2008);福建省重点引导性资助项目(2015H0052,2016H0047)

详细信息
  • 中图分类号: TM912.9

Synthesis of MnO/reduced graphene oxide composites as high performance anode materials for Li-ion batteries

  • 摘要: 通过冻干-煅烧合成了一氧化锰/石墨烯(MnO/rGO)复合材料,并将其用作锂离子电池负极材料.在500 mA·g-1的电流密度下,MnO/rGO复合材料表现出高达830 mAh·g-1的可逆容量,且在充放电循环160圈后,其可逆容量依然高达805 mAh·g-1.倍率测试结果显示,循环225圈后,在2.0 A·g-1的电流密度下,其可逆容量高达412 mAh·g-1.复合材料中的石墨烯在提高材料导电性的同时有效地缓解了一氧化锰充放电过程中的体积膨胀.通过对比容量-电压的微分分析,发现复合材料超出一氧化锰理论容量的部分是由形成了更高价态的锰引起的.MnO/rGO复合材料比纯一氧化锰(p-MnO)更容易出现高价态的锰,可能是因为rGO上残留的氧为电极反应提供了额外所需的氧源.该一氧化锰/石墨烯复合材料因其简单绿色的合成过程及优异的电化学性质,有望在未来的锂电负极中得到广泛的实际应用.
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出版历程
  • 收稿日期:  2016-05-17

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