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1、物理化学学报(WuliHuaxueXuebao)SeptemberActaPhys.鄄Chim.Sin.,2007,23(9)：1399-14041399[Article]www.whxb.pku.edu.cn有序中孔炭的电化学储氢性能鄢刘宇林李丽霞陈晓红宋怀河(北京化工大学化工资源有效利用国家重点实验室,北京100029)摘要：将蔗糖、聚环氧乙烯鄄聚环氧丙烯鄄聚环氧乙烯三嵌段共聚物和硅源构成的复合物进行预炭化、炭化和除硅处理合成出有序中孔炭,采用XRD、TEM、HRTEM和N2吸脱附等手段对其
2、进行表征,并将有序中孔炭制成电极开展恒流充放电储氢性能研究.结果显示,具有较高比表面积(720m2·g-1)和孔容(0.86cm3·g-1)的有序中孔炭材料的电化学储氢容量为70.1mAh·g-1,高于具有相对较低比表面积(610m2·g-1)和孔容(0.66cm3·g-1)的有序中孔炭储氢容量(64.1mAh·g-1).通过与单壁碳纳米管电极(25.9mAh·g-1)的对比,表明有序中孔炭具有良好的电化学储氢性能和更高的电化学活性.关键词：有序中孔炭;电化学储氢;氢吸附中图分类号：O646Th
3、eElectrochemicalHydrogenStoragePropertiesofOrderedMesoporousCarbons鄢LIUYu鄄LinLILi鄄XiaCHENXiao鄄HongSONGHuai鄄He(StateKeyLaboratoryofChemicalResourceEngineering,BeijingUniversityofChemicalTechnology,Beijing100029,P.R.China)Abstract：Orderedmesoporouscarb
4、onmaterialsweresuccessfullysynthesizedbyaneasymethodofthecarbonizationofsulfuric鄄acid鄄treatedsilica/triblockcopolymer/sucrosecomposites.Themorphologies,structuresandporecharacteristicsofthecarbonmaterialswereinvestigatedbyX鄄raydiffraction(XRD),nitrog
5、enadsorptiondesorptionandtransmissionelectronmicroscopy(TEMandHRTEM)measurements.Onthebasisofcomparingthesurfaceareasandporepropertiesoftwoorderedmesoporouscarbonsobtainedbychangingthecontentofthereactants,theirelectrochemicalhydrogenstoragecapacitie
6、sweretestedbyGalvanostaticcharge鄄dischargemeasurement.Theresultsshowedthatthecarbonmaterial(C鄄P)withhigherspecificsurfacearea(720m2·g-1)andporevolume(0.86cm3·g-1)hadhigherhydrogenstoragecapacity(70.1mAh·g-1)thanthecarbonmaterial(C鄄S)(64.1mAh·g-1)with
7、lowerspecificsurfacearea(610m2·g-1)andporevolume(0.66cm3·g-1).Bothofthetwoorderedmesoporouscarbonsexhibitedhigherhydrogenstoragecapacitiesthanthesingle鄄walledcarbonnanotubes(25.9mAh·g-1).Thecyclicvoltammetrymeasurementindicatedthattheorderedmesoporou
8、scarbonelectrodepossessedhigherelectrochemicalactivitythansingle鄄walledcarbonnanotubeselectrode.KeyWords：Orderedmesoporouscarbon;Electrochemicalhydrogenstorage;Hydrogenadsorption氢能是公认的清洁能源,最有希望在未来替代汽车动力的要求.因此,寻找一种具有高储氢容量的石化能源.在氢能的应用中,氢能的储存是最为关键材料是氢能储
