基于锂离子半电池和全电池的碳包覆氧化铁复合材料的电化学性能研究
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摘要：
采用水热法制备了碳包覆氧化铁(Fe2O3@C)复合材料.直径为30~50nm的Fe2O3类球形颗粒表面有8nm左右的碳包覆层.Fe2O3@C复合材料在锂离子电池中展现出了良好的电化学性能.在Fe2O3@C∥Li半电池中,Fe2O3@C在100mA·g^-1下循环300周后可逆放电比容量为730mAh·g^-1.在LiCoO2∥Fe2O3@C全电池中,Fe2O3@C在电流为50,100,200,400和600mA·g^-1时的放电比容量分别为1140,777,669,557和451mAh·g^-1.
A carbon-coated Fe2O3(Fe2O3@C)composite has been synthesized through hydrothermal method.The obtained Fe2O3 particles have a size of 30-50 nm in diameter,which are coated by about 8 nm carbon layers.Using Fe2O3@C composite as working electrodes,Li metal and commercial LiCoO2 as opposite electrodes respectively,half and full lithium-ion cells are assembled.After 300 cycles at 100 mA·g^-1,the discharge capacity of Fe2O3@C is stable at 730 mAh·g^-1 in half cells.Discharge capacities of 1140,777,669,557 and 451 mAh·g^-1 of Fe2O3@C are achieved at 50,100,200,400 and 600 mA·g^-1 in full cells.
作者：
袁光辉 耿敏 丁欢 张萍 刘新运 张永光
Yuan Guanghui;Geng Min;Ding Huan;Zhang Ping;Liu Xinyun;Zhang Yongguang(School of Chemistry and Chemical Engineering,Research Center of New Advanced Materials,Ankang Research Centre of Zn-Based&Fe-Al Materials and Technology,Ankang University,Ankang 725000,China;Chongqing Academy of Metrology and Quality Inspection,Chongqing 401123,China;Huaqin Power Technology Company Limited,Ankang 725000,China;Research Institute for Energy Equipment Materials,Hebei University of Technology,Tianjin 300130,China)
机构地区：
安康学院化学化工学院 重庆市计量质量检测研究院 华秦储能技术有限公司 河北工业大学能源装备材料技术研究院
出处：
《betway官方app 学报：自然科学版》 CAS 北大核心 2020年第6期64-70,共7页
基金：
国家自然科学基金(21406052) 陕西省科技厅面上项目基金(2019JM-229) 陕西省留学人员科技活动择优资助项目(2019-37) 安康市科技局工业攻关项目基金(2018AK01-12) 国家级大学生创新创业训练计划项目(201911397006).
关键词：
碳包覆 氧化铁 半电池 全电池 电化学性能
carbon-coated Fe2O3 half-cells full-cells electrochemical performance
分类号：
TM2 [一般工业技术—材料科学与工程]
