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首页> 外文期刊>International Journal of Electrochemical Science >Performances of Platinum and nitrogen Dual-Doped Ordered Mesoporous Carbon as Sulfur Host for Li-S Battery
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Performances of Platinum and nitrogen Dual-Doped Ordered Mesoporous Carbon as Sulfur Host for Li-S Battery

机译：Li-S电池铂和氮双掺杂有序介孔碳作为硫基质的性能

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摘要

Two types of Resorcinol-Formaldehyde (RF) resin based ordered mesoporous carbon materials wereused as sulfur host in lithium sulfur battery system. The effects of carbon material structure, morphology,surface area, pore volume, sulfur loading, electrolyte/sulfur ratio and metallic Pt nanoparticle decorationimpact on the adsorption of polysulfides and battery performance are studied. Results show that carbonmaterial carrying rod-like morphology and hexagonal meso-structure can have high sulfur loading dueto its high specific surface area and large pore volume. While the one with polyhedral particles andordered cubic meso-structure exhibits good cyclic stability and good capacity retention due to its goodadsorption of polysulfides upon its cage-like pores. After in-situ decorating of Pt nanoparticles, theperformance of cyclic stability as well as capacity retention significantly improved and better rateperformance is also gained because of the chemisorption of polysulfides and electro-catalytic activityupon Pt.
机译：在锂硫电池系统中，两种基于间苯二酚-甲醛（RF）树脂的有序介孔碳材料被用作硫主体。研究了碳材料的结构，形貌，表面积，孔体积，硫载量，电解质/硫比和金属Pt纳米颗粒装饰对多硫化物吸附和电池性能的影响。结果表明，具有杆状形态和六方内消旋结构的碳材料由于具有较高的比表面积和较大的孔体积而具有较高的硫载量。而具有多面体颗粒和有序立方内消旋结构的聚合物由于其在其笼状孔上对多硫化物的良好吸附而表现出良好的循环稳定性和良好的容量保持性。在原位修饰Pt纳米粒子后，由于多硫化物的化学吸附和对Pt的电催化活性，其循环稳定性和容量保持能力均得到显着改善，并且还获得了更好的速率性能。

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