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dc.contributor.author郎小玲zh_CN
dc.contributor.author江叶坤zh_CN
dc.contributor.author施梅勤zh_CN
dc.contributor.author康凌之zh_CN
dc.contributor.author马淳安zh_CN
dc.contributor.authorLANG Xiao-lingzh_CN
dc.contributor.authorJIANG Ye-kunzh_CN
dc.contributor.authorSHI Mei-qinzh_CN
dc.contributor.authorKANG Ling-zhizh_CN
dc.contributor.authorMA Chun-anzh_CN
dc.date.accessioned2015-09-17T01:48:57Z
dc.date.available2015-09-17T01:48:57Z
dc.date.issued2015-08-28zh_CN
dc.identifier.citation电化学,2015,21(4):336-343.zh_CN
dc.identifier.issn1006-3471zh_CN
dc.identifier.urihttp://dx.doi.org/10.13208/j.electrochem.150415zh_CN
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/93761
dc.description.abstract以酚醛树脂作为碳源,采用嵌段共聚物模板法一步制备新型有序介孔碳化钨/碳(WC/C)纳米颗粒. WC/C颗粒的比表面积为414 m2·g-1,表面的平均孔径约为38 nm,处于介孔范围内(2 ~ 50 nm). 通过调节树脂预聚时间以及碳化温度等条件制备出结构形貌较优的WC/C复合材料,并探讨了材料形成机理. 使用X射线衍射、扫描电镜、透射电镜及氮气吸脱附等方法表征了复合材料的结构. 将贵金属铂负载于WC/C表面制备得新电催化材料Pt-WC/C,使用循环伏安法和计时电流法对Pt-WC/C复合材料的电化学性能进行检测,并与商用碳载铂(Pt/C)材料进行对比. 测试结果发现,Pt-WC/C对甲醇的电催化活性以及稳定性等方面都表现出优于商用Pt/C材料的活性,这主要归功于碳化钨高度分散于碳表面.zh_CN
dc.description.abstractAt present, one of the major hurdles for commercialization of system with direct methanol fuel cell (DMFC) is still the requirement of a significant amount of platinum (Pt) catalyst to achieve an acceptable power density. Pt and Pt-based metals are expensive due to limited supplies. In order to find the catalyst alternative to the Pt metal, we selected tungsten carbide (WC) and its composites as the study object. We synthesized WC with carbon materials as the suitable support to modify the electronic structure and to increase the specific surface area of WC. In this study, tungsten carbide/carbon (WC/C) was prepared by block copolymer template synthesis method using resorcinol-formaldehyde resin (RF) as a carbon source. These novel, ordered, mesoporous WC/C nanocomposites showed high surface areas (414 m2·g-1) and appropriate pore-size (about 38 nm). The experimental conditions including the stirring time of phenol formaldehyde polymer and carburization temperature were systematically studied. The results indicated that the composites had optimized crystal phases and ordered arrangement of pores structures. The characteristics of WC/C composites were determined by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and Brunauer-Emmet-Teller gas adsorption. The Pt nanoparticles were uniformly distributed on WC/C and a new electrocatalyst of Pt-WC/C was prepared by microwave-assisted (MW) polyol method. The electro-catalytic performances of the as-prepared Pt-WC/C and commercial carbon-supported Pt (Pt/C) toward methanol oxidation were compared by cyclic voltammetry and chronoamperometry. It was found that the Pt-WC/C exhibited higher catalytic activity for methanol oxidation than commercial Pt/C catalyst. Especially, the Pt-WC/C achieved the long-term stability which was attributed to the high dispersion of WC with smaller sizes on the surface of carbon.zh_CN
dc.description.sponsorship国家自然科学基金项目(No. 21376220)、福建省科技厅重点项目(No. 2014H0038)及校产学研项目(No. LC2013008)资助zh_CN
dc.language.isozhzh_CN
dc.publisher厦门大学《电化学》编辑部zh_CN
dc.relation.ispartofseries研究论文zh_CN
dc.relation.ispartofseriesArticleszh_CN
dc.source.urihttp://electrochem.xmu.edu.cn/CN/abstract/abstract10174.shtmlzh_CN
dc.subject碳化钨zh_CN
dc.subject嵌段共聚物zh_CN
dc.subject甲醇氧化zh_CN
dc.subject电催化剂zh_CN
dc.subject模板法zh_CN
dc.subjecttungsten carbidezh_CN
dc.subjectblock copolymerzh_CN
dc.subjectmethanol oxidationzh_CN
dc.subjectelectrocatalystzh_CN
dc.subjecttemplate methodzh_CN
dc.title嵌段共聚物模板法一步制备WC/C基底电极材料zh_CN
dc.title.alternativeTungsten Carbide/Carbon Electrode Material Synthesized by Block Copolymer Template Methodzh_CN
dc.typeArticlezh_CN
dc.description.note作者联系地址:1. 浙江工业大学化学工程学院,绿色化学合成技术国家重点实验室培育基地,浙江 杭州 310032;2. 龙岩学院化学与材料学院,福建 龙岩 364000zh_CN
dc.description.noteAuthor's Address: 1. State Key Laboratory Breeding Base for Green Chemistry Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China; 2. College of Chemical and Materials Science, Longyan University, Longyan 364000, Fujian, Chinazh_CN
dc.description.note通讯作者E-mail:science@zjut.edu.cnzh_CN


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