合成了一种石墨烯基纳米复合材料即:由氮掺杂碳层包覆的金属钴纳米颗粒,充分分散于氮掺杂的石墨烯表面。这种纳米复合材料进一步提高了石墨烯的导电性,增加了石墨烯的储锂容量。该材料被用作锂离子电池负极材料,在性能测试中展现了良好...合成了一种石墨烯基纳米复合材料即:由氮掺杂碳层包覆的金属钴纳米颗粒,充分分散于氮掺杂的石墨烯表面。这种纳米复合材料进一步提高了石墨烯的导电性,增加了石墨烯的储锂容量。该材料被用作锂离子电池负极材料,在性能测试中展现了良好的循环性能,在以100 m A·g-1的电流密度循环200圈后,放电容量高达950.1 m Ah·g-1,库伦效率约为98%。展开更多
A six-arm initiating core containing 1,3,5-triazine:N,N’,N″-tris-(4,6-dichloro——triazine-2-yl)-diethylenetriamine(3T-DETA)is synthesize from cyanuric chloride(TCT)and diethylenetriamine(DETA).The optimum reaction ...A six-arm initiating core containing 1,3,5-triazine:N,N’,N″-tris-(4,6-dichloro——triazine-2-yl)-diethylenetriamine(3T-DETA)is synthesize from cyanuric chloride(TCT)and diethylenetriamine(DETA).The optimum reaction conditions include that n(TCT)∶n(DETA)=4∶1,N,N-diisopropylethylamine(DIPEA)is used as base,n(DIPEA)∶n(DETA)=4∶1,tetrahydrofuran as solvent,the flow rate of the THF solution of DETA and DIPEA is 0.67 mL/min,reacted at 0-5℃for 4 h and then at room temperature for 48 h,the product yield could reach to 95.3%.The structure of the target product is characterized by elementary analysis,MS,1H-NMR and FTIR.展开更多
文摘合成了一种石墨烯基纳米复合材料即:由氮掺杂碳层包覆的金属钴纳米颗粒,充分分散于氮掺杂的石墨烯表面。这种纳米复合材料进一步提高了石墨烯的导电性,增加了石墨烯的储锂容量。该材料被用作锂离子电池负极材料,在性能测试中展现了良好的循环性能,在以100 m A·g-1的电流密度循环200圈后,放电容量高达950.1 m Ah·g-1,库伦效率约为98%。
文摘A six-arm initiating core containing 1,3,5-triazine:N,N’,N″-tris-(4,6-dichloro——triazine-2-yl)-diethylenetriamine(3T-DETA)is synthesize from cyanuric chloride(TCT)and diethylenetriamine(DETA).The optimum reaction conditions include that n(TCT)∶n(DETA)=4∶1,N,N-diisopropylethylamine(DIPEA)is used as base,n(DIPEA)∶n(DETA)=4∶1,tetrahydrofuran as solvent,the flow rate of the THF solution of DETA and DIPEA is 0.67 mL/min,reacted at 0-5℃for 4 h and then at room temperature for 48 h,the product yield could reach to 95.3%.The structure of the target product is characterized by elementary analysis,MS,1H-NMR and FTIR.
基金supported by the National Natural Science Foundation of China(20771079)Priority Academic Program Development of Jiangsu Higher Education Institutions,China~~
