碳化温度对MOF6前驱体制备多孔碳材料作为锂电池正极材料性能的影响  

Effect of carbonization temperature on performance of MOF6-based porous carbon material for anode material of lithium battery

作　　者：陈坤 王慧[2] 夏薇 李鹏[1] CHEN Kun;WANG Hui;XIA Wei;LI Peng(College of Chemical Engineering,China University of Petroleum,Qingdao 266580,China;Business School,Qingdao Technical College,Qingdao 266555,China)

机构地区：[1]中国石油大学(华东)化学工程学院,山东青岛266580 [2]青岛职业技术学院商学院,山东青岛266555

出　　处：《现代化工》2020年第6期175-178,共4页Modern Chemical Industry

摘　　要：以金属Zn为中心离子、MOF6晶体为前驱体制得纳米多孔碳纤维(PCNF)材料,分析了碳化温度对MOF6为前驱体制备多孔碳材料作为锂电池正极材料性能的影响。结果表明,所有试样孔径尺寸都介于1~30 nm范围内。PCNF-800与PCNF-900材料经BET测试表明具有较小的比表面积与BJH总孔体积和较大的吸附平均孔径。当碳化温度上升后,试样基体内孔径降低,在材料中形成微孔。在C-Co/CP的截面形成条形分布的多层碳纤维,碳纸两侧都形成了具有紧密排列结构的C-Co。PCNF-1000材料具有明显低于其他PCNF材料的循环稳定性,在1100℃下制得的PCNF-1100材料可以作为锂电池正极材料的最佳选择。Nanoscale layered porous carbon fiber(PCNF)material is prepared with Zn as the core ion and MOF6 crystal as the precursor.The influence of carbonization temperature on the performance of PCNF-based lithium sulfur battery is analyzed by experimental test method.Results indicate that the pore sizes of all samples are within the range of 1-30 nm.BET tests demonstrate that PCNF-800 and PCNF-900 materials have smaller specific surface area and BJH total pore volume,and larger adsorption average pore diameter.When the carbonization temperature rises,the pore diameter in the prepared sample matrix decreases and micropores are formed.A strip distribution of multi-layer carbon fiber is formed on the section of C-Co/CP,and C-Co with a tight arrangement structure is formed on both sides of the carbon paper.The cycling stability of PCNF-1000 material is obviously lower than that of other materials.PCNF-1100 material prepared at 1100℃is the best choice of anode material for lithium sulfur battery.

关 键 词：碳化温度 前驱体 多孔碳材料 性能测试 

分 类 号：TQ15[化学工程—电化学工业]