Based on the synthesis of 2,2′-bisindan-1,1′,3,3′-tetrone(1),5,5′-dimethyl-2,2′-bisindan-1,1′,3,3′-tetrone(2) was obtained.This paper described the synthetic process and confirmed the characteristic of compound...Based on the synthesis of 2,2′-bisindan-1,1′,3,3′-tetrone(1),5,5′-dimethyl-2,2′-bisindan-1,1′,3,3′-tetrone(2) was obtained.This paper described the synthetic process and confirmed the characteristic of compound 2 by elemental analysis,1H NMR,FTIR and MS,then discussed a possible existing form.Compound 2 maily existed as en-ol form and had H-bonds in the molecule.At the same time,the ESR value of compound 2 was given as g=2.0042,could form stable radical.展开更多
导电聚合物材料具有原料价格低廉、比重轻、具可塑性、微结构便于控制等优点,在锂离子电池方面具有应用的潜力.聚萘是一种良好的导电高分子,它具有许多优良的光电性能.该文以3,4,9,10-二苯四甲酸酐为原料,在一定条件下,经高温煅烧合成...导电聚合物材料具有原料价格低廉、比重轻、具可塑性、微结构便于控制等优点,在锂离子电池方面具有应用的潜力.聚萘是一种良好的导电高分子,它具有许多优良的光电性能.该文以3,4,9,10-二苯四甲酸酐为原料,在一定条件下,经高温煅烧合成一种石墨状聚萘,并以这种石墨状聚萘为锂离子电池正极材料,对其进行探索性研究.通过红外光谱、拉曼光谱、热失重、扫描电镜等分析手段,对合成的石墨状聚萘做了相应的结构和外貌表征;利用恒流充放电、循环伏安和交流阻抗等电化学方法来研究石墨状聚萘的电化学性能.结果表明,通过上述合成方法,成功合成了石墨状聚萘,经电化学性能测试发现石墨状聚萘有较大的放电容量、良好的循环稳定性,在电流密度为100 m Ah·g-1的条件下,首次放电容量高达281.3 m Ah·g-1,100次循环后,容量仍保持在188.4 m Ah·g-1,容量保持率高达66.97%.因此,石墨状聚萘是一种较为理想的锂离子电池的正极材料.展开更多
文摘Based on the synthesis of 2,2′-bisindan-1,1′,3,3′-tetrone(1),5,5′-dimethyl-2,2′-bisindan-1,1′,3,3′-tetrone(2) was obtained.This paper described the synthetic process and confirmed the characteristic of compound 2 by elemental analysis,1H NMR,FTIR and MS,then discussed a possible existing form.Compound 2 maily existed as en-ol form and had H-bonds in the molecule.At the same time,the ESR value of compound 2 was given as g=2.0042,could form stable radical.
文摘导电聚合物材料具有原料价格低廉、比重轻、具可塑性、微结构便于控制等优点,在锂离子电池方面具有应用的潜力.聚萘是一种良好的导电高分子,它具有许多优良的光电性能.该文以3,4,9,10-二苯四甲酸酐为原料,在一定条件下,经高温煅烧合成一种石墨状聚萘,并以这种石墨状聚萘为锂离子电池正极材料,对其进行探索性研究.通过红外光谱、拉曼光谱、热失重、扫描电镜等分析手段,对合成的石墨状聚萘做了相应的结构和外貌表征;利用恒流充放电、循环伏安和交流阻抗等电化学方法来研究石墨状聚萘的电化学性能.结果表明,通过上述合成方法,成功合成了石墨状聚萘,经电化学性能测试发现石墨状聚萘有较大的放电容量、良好的循环稳定性,在电流密度为100 m Ah·g-1的条件下,首次放电容量高达281.3 m Ah·g-1,100次循环后,容量仍保持在188.4 m Ah·g-1,容量保持率高达66.97%.因此,石墨状聚萘是一种较为理想的锂离子电池的正极材料.
