近年来,由于可折叠电子屏幕的商业化成功加快了锂离子柔性电池开发进程。文献报道的部分柔性电池虽然在一定程度上实现可折叠化,但是其容量与抗拉伸性能较低。开发高容量、高机械强度柔性锂离子电池迫在眉睫。以二氧化锡为研究对象,采...近年来,由于可折叠电子屏幕的商业化成功加快了锂离子柔性电池开发进程。文献报道的部分柔性电池虽然在一定程度上实现可折叠化,但是其容量与抗拉伸性能较低。开发高容量、高机械强度柔性锂离子电池迫在眉睫。以二氧化锡为研究对象,采用溶胶凝胶涂覆法制备了碳纤维为导电集流体,二氧化锡为活性材料的高容量柔性锂离子电池,测试表明材料在1C电流密度下进行测试充放电性能,循环100次以后得到631 mAh g-1容量,高于目前的商业化石墨碳容量。展开更多
Nanosized SnO 2 powders were synthesized by using the direct pyrolysis means from SnC 2O 4 .The specimens were characterized by TEM, XRD, TG-DTA, FTIR and BET. TEM and XRD showed that the SnO 2 crystallines were less ...Nanosized SnO 2 powders were synthesized by using the direct pyrolysis means from SnC 2O 4 .The specimens were characterized by TEM, XRD, TG-DTA, FTIR and BET. TEM and XRD showed that the SnO 2 crystallines were less than 8 nm in diameter together with a narrow particle size distribution. BET showed that the surface area of SnO 2 was 115.2 m 2/g. FTIR spectra revealed that the absorptions of Sn—O and —OH bonds in SnO 2 ultrafine powders were red-shifted and broadened. According to the curve of TG-DTA, SnC 2O 4 transformed into SnO 2 completely after being calcined at 250 ℃. Further gas sensing experiments testified that the response and recovery times to C 2H 5OH were shorter than those obtained by the conventional precipitation method.展开更多
文摘近年来,由于可折叠电子屏幕的商业化成功加快了锂离子柔性电池开发进程。文献报道的部分柔性电池虽然在一定程度上实现可折叠化,但是其容量与抗拉伸性能较低。开发高容量、高机械强度柔性锂离子电池迫在眉睫。以二氧化锡为研究对象,采用溶胶凝胶涂覆法制备了碳纤维为导电集流体,二氧化锡为活性材料的高容量柔性锂离子电池,测试表明材料在1C电流密度下进行测试充放电性能,循环100次以后得到631 mAh g-1容量,高于目前的商业化石墨碳容量。
文摘Nanosized SnO 2 powders were synthesized by using the direct pyrolysis means from SnC 2O 4 .The specimens were characterized by TEM, XRD, TG-DTA, FTIR and BET. TEM and XRD showed that the SnO 2 crystallines were less than 8 nm in diameter together with a narrow particle size distribution. BET showed that the surface area of SnO 2 was 115.2 m 2/g. FTIR spectra revealed that the absorptions of Sn—O and —OH bonds in SnO 2 ultrafine powders were red-shifted and broadened. According to the curve of TG-DTA, SnC 2O 4 transformed into SnO 2 completely after being calcined at 250 ℃. Further gas sensing experiments testified that the response and recovery times to C 2H 5OH were shorter than those obtained by the conventional precipitation method.
