多孔聚合物因具有高比表面积、孔结构可调性、孔隙结构丰富、合成方法多样而引起了广泛关注,在储能领域,可将其炭化后应用在超级电容器的电极材料中。在这项工作中用溶剂热法制备出多孔聚合物(PSC),以PSC为前驱体,一步炭化法制备多孔炭PSC-T。结果表明:多孔炭PSC-T具有石墨化结构,含有大量介孔。其电化学性能优异,在电流密度为1.0A/g时,比电容为190.1F/g,经过5000次的循环充放电后,比电容保留率为90%。
Porous polymers have attracted a lot of attention due to high specific surface area,tunable pore structure,rich pore structure,diverse synthesis methods.In the field of energy storage,they can be charred and used in electrode materials for supercapacitors.In this work,a porous polymer,referred to as PSC,was prepared by solvothermal method.Then,using PSC as precursor,a porous carbon (PSC-T) was further prepared by one-step charring method.The results showed that the PSC-T had a graphitic structure and contained a large number of mesopores.The study also revealed that the porous carbon PSC-750 had excellent electrochemical properties:at a current density of 1.0A/g,the specific capacitance was 190.1F/g and the specific capacitance retention was 90% after 5000 cycles of charging and discharging.
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基金资助
国家自然科学基金(21364004);甘肃省高等学校基本科研业务费资助(056002)
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