Versatile module design of precursor networks enables flexible functionalization of nano-carbon electrode materials to meet the adaptable energy-storage demand. Functionalized heterogeneous networks are more likely to...Versatile module design of precursor networks enables flexible functionalization of nano-carbon electrode materials to meet the adaptable energy-storage demand. Functionalized heterogeneous networks are more likely to decompose by swift temperature programming together with predesign module removal, so high functionality/network transfer from precursor to carbon is still a work in progress. A pre-stabilization route is proposed here to enhance the network strength at early pyrolysis and pin up precursor-level functionalities on the final carbon. Such strategy successfully fixes more electroactive N(4.28-8.86 wt%) into the resultant carbon microspheres compared with non-pretreated carbon(2.89wt%), as well as achieves broad ion-accessible platforms of 1575-2269 m^(2)/g with preset structural superiorities. As a result, a typical acidic device reveals an outstanding specific capacitance of 383 F/g at 10 mV/s. Taking advantage of a novel LiNO_(3)-PAM polymer electrolyte, the upgraded symmetric device displays the maximum specific capacitance of 229 F/g, along with a boosted energy density of 41.1 Wh/kg at 643.4 W/kg. This work opens up a feasible insight into realizing highly efficient precursor/electrode design toward superior system with outstanding energy/power feature and temperature applicability.展开更多
Six soluble quinone-amine polymers (PAQs ) were synthesized from p-benzo-quinone with α, ω-diaminoalkoxypolymethylsiloxa, α, ω-diaminopropylpolymethylsiloxa,isophorone diamine, polyether-ester-amide type diamine a...Six soluble quinone-amine polymers (PAQs ) were synthesized from p-benzo-quinone with α, ω-diaminoalkoxypolymethylsiloxa, α, ω-diaminopropylpolymethylsiloxa,isophorone diamine, polyether-ester-amide type diamine and two kinds of disecondary amine,respectively. Their spectral properties and elemental analysis results are reported.展开更多
本文基于迈克尔加成机理,以对苯醌和乙二胺为原材料合成了一种醌胺聚合物,采用红外波谱和扫描电镜分别对其结构和形貌进行了表征,并以1 M ZnSO_(4)·7H_(2)O为电解质,锌箔为对电极,研究了其作为正极材料在水系锌离子电池中的电化学...本文基于迈克尔加成机理,以对苯醌和乙二胺为原材料合成了一种醌胺聚合物,采用红外波谱和扫描电镜分别对其结构和形貌进行了表征,并以1 M ZnSO_(4)·7H_(2)O为电解质,锌箔为对电极,研究了其作为正极材料在水系锌离子电池中的电化学性能。实验结果表明,其在0.02 A/g下的首圈充放电比容量分别达到159.6 mAh/g和53.7 mAh/g,50次循环后容量保持率为57%,库伦效率保持在90%以上,表现出良好的电化学性能。展开更多
基金financially supported by the National Natural Science Foundation of China(Nos.21875165,51772216,21905207 and 22172111)the Science and Technology Commission of Shanghai Municipality,China(Nos.20ZR1460300,19DZ2271500 and 22ZR1464100)+2 种基金Zhejiang Provincial Natural Science Foundation of China(No.LY19B010003)the Fundamental Research Funds for the Central Universitiesthe Large Equipment Test Foundation of Tongji University。
文摘Versatile module design of precursor networks enables flexible functionalization of nano-carbon electrode materials to meet the adaptable energy-storage demand. Functionalized heterogeneous networks are more likely to decompose by swift temperature programming together with predesign module removal, so high functionality/network transfer from precursor to carbon is still a work in progress. A pre-stabilization route is proposed here to enhance the network strength at early pyrolysis and pin up precursor-level functionalities on the final carbon. Such strategy successfully fixes more electroactive N(4.28-8.86 wt%) into the resultant carbon microspheres compared with non-pretreated carbon(2.89wt%), as well as achieves broad ion-accessible platforms of 1575-2269 m^(2)/g with preset structural superiorities. As a result, a typical acidic device reveals an outstanding specific capacitance of 383 F/g at 10 mV/s. Taking advantage of a novel LiNO_(3)-PAM polymer electrolyte, the upgraded symmetric device displays the maximum specific capacitance of 229 F/g, along with a boosted energy density of 41.1 Wh/kg at 643.4 W/kg. This work opens up a feasible insight into realizing highly efficient precursor/electrode design toward superior system with outstanding energy/power feature and temperature applicability.
文摘Six soluble quinone-amine polymers (PAQs ) were synthesized from p-benzo-quinone with α, ω-diaminoalkoxypolymethylsiloxa, α, ω-diaminopropylpolymethylsiloxa,isophorone diamine, polyether-ester-amide type diamine and two kinds of disecondary amine,respectively. Their spectral properties and elemental analysis results are reported.
