热还原氧化石墨的可逆储钠性能

Sodium Reservoir Storage Performance of Thermal Reduction Graphite Oxide

采用改进的Hummers方法制备氧化石墨（GO），然后通过热处理方法制备还原氧化石墨（RGO），并分析测试了其结构及储钠性能。结果表明：随着热处理温度升高，与GO相比，RGO的体积膨胀，X射线衍射峰强度降低、层间距减小，结构无序度增加；RGO的首次可逆容量呈现先增大后减小的趋势，在400℃出现最大值为181．6mAh／g。

Graphite oxide （GO） was prepared by an improved Hummers method, and then the reduced graphite oxide （RGO） was prepared by thermal reduction. The structure and performance of sodium reservoir storage were analyzed. The results show that compared to GO, the volume of RGO increases, the intensity of XRD decreases, the layer space reduces, and the disorder degree of structure increases with increasing the heat-treatment temperature. The first reversible capacity of RGO firstly increases and then decreases, and the maximum value at 400 ℃ is 181.6 mAh/g, showing a promising prospect of application.