CAJ | 학술논문

以聚乙烯吡咯烷酮(PVP)和聚甲基丙烯酸甲酯(PMMA)为原料,通过静电纺丝法结合三步热处理工艺成功制备出多孔碳纳米纤维.采用X射线衍射、扫描电镜、透射电镜和比表面分析仪等测试方法系统地分析了 PVP/PMMA 不同质量比对多孔碳纳米纤维的形貌和电化学性能的影响.实验测试结果表明当 PVP 与 PMMA 质量比为3∶2时,得到的多孔碳纳米纤维的比表面积最大,可达到545.4 m2·g-1,并且具有最好的电化学性能；在0.1 C 充放电速率下50次循环之后样品的放电比容量约为220 mAh·g-1.所有由PVP/PMMA混合原料制备的多孔碳纳米纤维的比容量均高于由PVP原料制备的碳纳米纤维,并具有较好的循环性能.
이취을희필각완동(PVP)화취갑기병희산갑지(PMMA)위원료,통과정전방사법결합삼보열처리공예성공제비출다공탄납미섬유.채용X사선연사、소묘전경、투사전경화비표면분석의등측시방법계통지분석료 PVP/PMMA 불동질량비대다공탄납미섬유적형모화전화학성능적영향.실험측시결과표명당 PVP 여 PMMA 질량비위3∶2시,득도적다공탄납미섬유적비표면적최대,가체도545.4 m2·g-1,병차구유최호적전화학성능；재0.1 C 충방전속솔하50차순배지후양품적방전비용량약위220 mAh·g-1.소유유PVP/PMMA혼합원료제비적다공탄납미섬유적비용량균고우유PVP원료제비적탄납미섬유,병구유교호적순배성능.
Porous carbon nanofibers (PCNFs)have been synthesized via electrospinning of polyvinyl pyr-rolidone/polymethyl methacrylate (PVP/PMMA)composites precursor into polymeric nanofibers,followed by a three-step heat treatment process.The effects of different mass ratios of PVP to PMMA on the porous carbon nanofibers have been studied systematically by using X-ray diffraction (XRD),scanning electronmi-croscopy (SEM),transmission electronmicroscopy (TEM),and Brunauer Emme-Teller (BET)techniques. The results indicate that PCNFs with m (PVP)∶m (PMMA)=3∶2 are mesoporous and exhibit the largest specific surface area of 545.4 m2 ·g-1 without subsequent activation,and the highest capacity about 220 mAh·g-1 at 0.1 C after 50 cycles.The electrochemical measurement shows that the cyclic reversible ca-pacity of all the PCNFs is higher than that of carbon nanofibers prepared by PVP,and all the samples have relatively good cycling stability.