ωPropionyl camphene was wynthesized in one step from the reaction between propionyl anhydride camphene in ether and ethyl acetate catalysed by ZnCl2 and its GC content in reaction solution was not less than 31%,m...ωPropionyl camphene was wynthesized in one step from the reaction between propionyl anhydride camphene in ether and ethyl acetate catalysed by ZnCl2 and its GC content in reaction solution was not less than 31%,more than the isolation products of camphene.展开更多
通过静电纺丝的方法,制备了磷酸钒锂/碳纳米纤维复合物（LVP/CNF）,经不同温度的高温热处理后,样品形貌虽然发生变化,但仍保持了有序纤维状,且纤维直径随温度升高逐渐变小.通过XRD表征发现600,700,800,900℃下得到样品的结晶度不同,在60...通过静电纺丝的方法,制备了磷酸钒锂/碳纳米纤维复合物（LVP/CNF）,经不同温度的高温热处理后,样品形貌虽然发生变化,但仍保持了有序纤维状,且纤维直径随温度升高逐渐变小.通过XRD表征发现600,700,800,900℃下得到样品的结晶度不同,在600℃时没有成相,800℃和900℃时结晶性较好.在3.0~4.3 V的电压范围下,800℃和900℃煅烧得到的LVP样品的首次放电容量为134 m Ah/g和135 m Ah/g,达到了Li_3V_2（PO_4）_3的理论容量133 m Ah/g.在高倍率充放电条件下,LVP/CNF材料仍然显示出优良的电化学性能.展开更多
文摘ωPropionyl camphene was wynthesized in one step from the reaction between propionyl anhydride camphene in ether and ethyl acetate catalysed by ZnCl2 and its GC content in reaction solution was not less than 31%,more than the isolation products of camphene.
文摘通过静电纺丝的方法,制备了磷酸钒锂/碳纳米纤维复合物（LVP/CNF）,经不同温度的高温热处理后,样品形貌虽然发生变化,但仍保持了有序纤维状,且纤维直径随温度升高逐渐变小.通过XRD表征发现600,700,800,900℃下得到样品的结晶度不同,在600℃时没有成相,800℃和900℃时结晶性较好.在3.0~4.3 V的电压范围下,800℃和900℃煅烧得到的LVP样品的首次放电容量为134 m Ah/g和135 m Ah/g,达到了Li_3V_2（PO_4）_3的理论容量133 m Ah/g.在高倍率充放电条件下,LVP/CNF材料仍然显示出优良的电化学性能.
