天津工业大学学报
天津工業大學學報
천진공업대학학보
JOURNAL OF TIANJIN POLYTECHNIC UNIVERSITY
2015年
3期
6-11
,共6页
刘延波%李辉%杨文秀%宋学礼
劉延波%李輝%楊文秀%宋學禮
류연파%리휘%양문수%송학례
超级电容器%静电纺丝%聚丙烯腈%隔膜%电化学测试
超級電容器%靜電紡絲%聚丙烯腈%隔膜%電化學測試
초급전용기%정전방사%취병희정%격막%전화학측시
supercapacitor%electrospinning%polyacrylonitrile%diaphragm%electrochemical test
静电纺丝技术制备PAN/PVDF-HFP复合纳米纤维膜,对PAN/PVDF-HFP/PAN三层结构复合膜进行热压处理,对其力学性能进行分析评价,最后组装纽扣型超级电容器,并对其电化学性能进行分析测试.结果表明:静电纺PAN纺丝溶液中DMF/丙酮溶剂体系的最佳配比为7∶3;PAN/PVDF-HFP热压复合最佳温度和时间为120℃和60 s,此时复合膜的断裂强度为13.5 MPa;PAN/PVDF-HFP复合膜作为超级电容器隔膜,其等效串联电阻(ESR)为0.57Ω,小于商品膜Celgard2400的0.64Ω;,CV曲线在5 mV/s扫速下仍保持较好的矩形特征,GCD曲线在0.05 A/g电流密度下比容量为79.55 F/g,高于商品膜Celgard2400的62.78 F/g.
靜電紡絲技術製備PAN/PVDF-HFP複閤納米纖維膜,對PAN/PVDF-HFP/PAN三層結構複閤膜進行熱壓處理,對其力學性能進行分析評價,最後組裝紐釦型超級電容器,併對其電化學性能進行分析測試.結果錶明:靜電紡PAN紡絲溶液中DMF/丙酮溶劑體繫的最佳配比為7∶3;PAN/PVDF-HFP熱壓複閤最佳溫度和時間為120℃和60 s,此時複閤膜的斷裂彊度為13.5 MPa;PAN/PVDF-HFP複閤膜作為超級電容器隔膜,其等效串聯電阻(ESR)為0.57Ω,小于商品膜Celgard2400的0.64Ω;,CV麯線在5 mV/s掃速下仍保持較好的矩形特徵,GCD麯線在0.05 A/g電流密度下比容量為79.55 F/g,高于商品膜Celgard2400的62.78 F/g.
정전방사기술제비PAN/PVDF-HFP복합납미섬유막,대PAN/PVDF-HFP/PAN삼층결구복합막진행열압처리,대기역학성능진행분석평개,최후조장뉴구형초급전용기,병대기전화학성능진행분석측시.결과표명:정전방PAN방사용액중DMF/병동용제체계적최가배비위7∶3;PAN/PVDF-HFP열압복합최가온도화시간위120℃화60 s,차시복합막적단렬강도위13.5 MPa;PAN/PVDF-HFP복합막작위초급전용기격막,기등효천련전조(ESR)위0.57Ω,소우상품막Celgard2400적0.64Ω;,CV곡선재5 mV/s소속하잉보지교호적구형특정,GCD곡선재0.05 A/g전류밀도하비용량위79.55 F/g,고우상품막Celgard2400적62.78 F/g.
PAN/PVDF-HFP composite nanofiber membranes are prepared by electrospinning. The PAN/PVDF-HFP com-posite nanofiber membranes with 3 layer structure are treated by hot pressing and their mechanical properties are analyzed and evaluated. finally a button-type supercapacitor is assembled and its electrochemical performance is determined. The results show that the best ratio of DMF/acetone in electro-spun PAN spinning solution is 7∶3;the optimum hot composite temperature and time for PAN/PVDF-HFP are 120 ℃ and 60 s, respectively, the fracture strength of the composite membrane is 13.5 MPa. PAN/PVDF-HFP composite membrane as separator in supercapacitor, its ESR is 0.57Ωwhich is less than 0.64Ωof commercial film Celgard2400,CV curve remains better rectangle features at 5 mV/s scan rate, GCD curve shows capacitances of 79.55 F/g at 0.05 A/g current density which is higher than 62.78 F/g of commercial film Celgard2400.