无机材料学报2017，Vol.32Issue(7)：691-698,8.DOI:10.15541/jim20160493
FeS2/RGO纳米复合材料的制备及热电池放电性能
Hydrothermal Synthesis of FeS2/Reduced Graphene Oxide Nanocomposite with Enhanced Discharge Performance for Thermal Battery
杨坤坤 1杨少华 2赵平 1赵彦龙2
作者信息
- 1. 沈阳理工大学 环境与化学工程学院, 沈阳 110159
- 2. 辽宁省特种储备电源工程技术研究中心, 沈阳 110159
- 折叠
摘要
Abstract
FeS2/reduced graphene oxide (RGO) composites were prepared through a facile hydrothermal method us-ing FeCl2, Na2S2O3 and graphene oxide(GO) as the starting materials. X-ray diffractometer (XRD), scanning electron microscope (SEM), laser particle size distribution analyzer, and differential thermal analyzer (DTA) were used to characterize the prepared nanocomposites. The results show that graphene oxide prevents the aggregation of FeS2 par-ticles during the hydrothermal synthesis, and make FeS2 form loose spherical particles. FeS2/RGO exhibits a high spe-cific capacity of 314.9 mAh/g with a cut-off voltage of 1.5 V at constant current density of 100 mA/cm2 and tempera-ture of 450℃ in LiCl-KCl melt, which is 65.6 mAh/g higher than that of FeS2. FeS2/RGO exhibits a high specific ca-pacity of 302.3 mAh/g with a cut-off voltage of 1.5 V at constant current density of 100 mA/cm2 and temperature of 500℃ in LiF-LiCl-LiBr melt, which is 29.8 mAh/g higher than that of FeS2. In contrast with FeS2, the conductivity of the FeS2/RGO cathode material is improved, the resistance of the single cell is relatively lower during discharge proc-ess, thus FeS2/RGO cathode has a better battery discharge capacity.关键词
热电池/正极材料/水热法/FeS2/RGOKey words
thermal battery/cathode material/hydrothermal synthesis/FeS2/RGO分类
信息技术与安全科学引用本文复制引用
杨坤坤,杨少华,赵平,赵彦龙..FeS2/RGO纳米复合材料的制备及热电池放电性能[J].无机材料学报,2017,32(7):691-698,8.
