化工学报2017，Vol.68Issue(3)：1116-1121,6.DOI:10.11949/j.issn.0438-1157.20161630
Na0.44MnO2纳米棒/石墨烯正极的制备和电化学储锂性能
Preparation and electrochemical lithium storage properties of Na0.44MnO2 nanorods/graphene cathode
摘要
Abstract
Na0.44MnO2 nanorods were prepared from KMnO4, MnSO4 and NaOH as initial raw materials by hydrothermal soft chemical method. XRD confirmed that the products have S-shaped channel structure, and TEM characterization indicates that Na0.44MnO2 nanorods is single-crystal structure, which can be suited for preparation of high performance cathode material. Graphene prepared by hummer method were used as conductive agent. Electrochemical test research shows that the capacity, cycle and rate performance of Na0.44MnO2 nanorods/graphene are improved with the increase of the amount of graphene. When the content of graphene reached to 45%, the capacity of electrode is up to 192.5 mAh·g?1 at the current density of 0.1 A·g?1. In the rate test, the capacity of electrode is still located at 123.4 mAh·g?1 at the current density of 2.0 A·g?1, and it indicates that these electrode materials have potential application in the next generation of advanced batteries.关键词
水热/制备/纳米材料/石墨烯/锂离子电池Key words
hydrothermal/preparation/nanomaterials/graphene/lithium ion batteries分类
信息技术与安全科学引用本文复制引用
刘才,王丽媛,李建刚,冀德坤,焦玉海,张荣月,徐文星..Na0.44MnO2纳米棒/石墨烯正极的制备和电化学储锂性能[J].化工学报,2017,68(3):1116-1121,6.基金项目
国家自然科学基金项目(61304217) （61304217）
北京市教育委员会科技计划项目(KM201510017001, KM201510017003).supported by the National Natural Science Foundation of China (61304217), the Scientific Research Common Program of Beijing Municipal Commission of Education (KM201510017001, KM201510017003). （KM201510017001, KM201510017003）
