In this work, the Hamiltonian of the two body problem with varying mass was developed in the extended phase space taking into consideration the periastron effects. The short period solution was obtained through constr...In this work, the Hamiltonian of the two body problem with varying mass was developed in the extended phase space taking into consideration the periastron effects. The short period solution was obtained through constructing a second order canonical transformation using “Hori’s” method developed by “Kamel”. The elements of the transformation as well as the inverse transformation were obtained too. The final solution of the problem was derived using “Delva-Hanslmeier” method.展开更多
通过硫化聚合的方法,以四氯苯醌(TCQ)为单体合成了聚硫代苯醌(PBQS)材料。本文改变S的加入量,探讨了不同摩尔比的S和Na_2S对PBQS电极电化学性能的影响。当S和Na_2S摩尔比为0.4时,形成两个氯原子被硫取代的PBQS-0.4稳定结构。PBQS-0.4电...通过硫化聚合的方法,以四氯苯醌(TCQ)为单体合成了聚硫代苯醌(PBQS)材料。本文改变S的加入量,探讨了不同摩尔比的S和Na_2S对PBQS电极电化学性能的影响。当S和Na_2S摩尔比为0.4时,形成两个氯原子被硫取代的PBQS-0.4稳定结构。PBQS-0.4电极放电比容量达到140 m Ah?g^(-1)以上,显现出良好的循环稳定性和优异的倍率性能。而当S和Na_2S摩尔比降至0.25时,氯取代不完全、聚合程度不高;S和Na_2S摩尔比增至0.7:1时,聚合物中可能形成了不稳定的累积S―S键;上述两方面都导致电极性能明显下降。展开更多
文摘In this work, the Hamiltonian of the two body problem with varying mass was developed in the extended phase space taking into consideration the periastron effects. The short period solution was obtained through constructing a second order canonical transformation using “Hori’s” method developed by “Kamel”. The elements of the transformation as well as the inverse transformation were obtained too. The final solution of the problem was derived using “Delva-Hanslmeier” method.
文摘通过硫化聚合的方法,以四氯苯醌(TCQ)为单体合成了聚硫代苯醌(PBQS)材料。本文改变S的加入量,探讨了不同摩尔比的S和Na_2S对PBQS电极电化学性能的影响。当S和Na_2S摩尔比为0.4时,形成两个氯原子被硫取代的PBQS-0.4稳定结构。PBQS-0.4电极放电比容量达到140 m Ah?g^(-1)以上,显现出良好的循环稳定性和优异的倍率性能。而当S和Na_2S摩尔比降至0.25时,氯取代不完全、聚合程度不高;S和Na_2S摩尔比增至0.7:1时,聚合物中可能形成了不稳定的累积S―S键;上述两方面都导致电极性能明显下降。
