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Design of Metal Structures Encapsulated in N-doped Carbon Layers as Tunable Catalysts for Electrochemical Applications
2017-03-29 | 编辑: | 【 】| | 供稿部门:
    

  报告题目:Design of Metal Structures Encapsulated in N-doped Carbon Layers as Tunable Catalysts for Electrochemical Applications 

  报告人:Prof. Takeo Ohsaka (大坂 武男) 

  报告人单位:日本东京工业大学 

  报告时间:2017330日(星期四)9:30-11:00  

  报告地点:能源楼217报告厅  

  主持人:武建飞 研究员 

  报告摘要: 

  The identification and development of efficient catalysts made of non-precious materials for oxygen reduction reaction (ORR) are essential for the successful operation of a wide range of energy devices. In this presentationearth-abundant nanoparticles of transition metals encapsulated in a nitrogen-doped carbon shell(M@N-C,M = Fe, Co, Ni, Cu or Fe alloys) are proved to be the promising metal catalysts in acidic solutions. By density functional theory calculations and experimental validations, a method of tuning the ORR activity of Me@N-C are quantitatively proposed by controlling the nitrogen-doping level, the thickness of the N-C shells and binary alloying. FeCo@N-C/KB was chosen as the best ORR catalyst because of its onset and half-wave potentials of 0.92 and 0.74 V vs. a reversible hydrogen electrode (RHE), respectively, and its excellent durability. Furthermore, FeCo@N-C/KB possesses a high activity for the hydrogen evolution reaction (HER), thus demonstrating that a good bifunctional ORR and HER catalyst in acidic media. 

  报告人简介:   

  大坂武男,男,理学博士,日本东京工业大学教授,日本电化学会编辑理事、副会长,日本化学学会关东支部副会长,世界级科学家,电分析领域的创始人之一,是阴极氧还原(ORR)动力学、催化剂领域的杰出科学家,是ISEECSECSJACS成员。目前已培养毕业研究生125名,博士生42名,与他人联合培养研究生71名。以第一作者或通讯作者发表SCI论文400余篇,包括J. Am. Chem. Soc.Anal. Chem.J. Mater.Chem. ANano ResearchBiosens. BioelectronLangmuirMacromoleculesElectrochim.Acta等顶级期刊以及ACS CatalysisAnalystElectrochem.Commun.等催化领域权威刊物,论文他引次数达13,268余次,H因子高达60;参与撰写著作38本,专利47篇,并被邀请撰写综述12篇,在电化学领域做出了突出的科学贡献并产生了深远的影响。 

  所获荣誉: 

  日本电化学学会成就奖(2016 

  岛津纪念基金会发明纪念奖(2003.3 

  日本电化学会科学奖(2000.3)) 

  日本化学会青年科学家讲座奖(1988.3 

  研究领域 

  电化学,电分析化学,物理化学,燃料电池催化剂,能源材料,离子液体,纳米材料,纳米生物科学等。 

  代表性论文: 

  1. F. C. AnsonT. Ohsaka, Kinetics of electron-transfer cross-reactions within redox polymers. Coatings of a protonated polylysine copolymer with incorporated electroactive anionsJ. Am. Chem. Soc., 105, 4883-4890(1983). 

  2. N. Oyama, T. Ohsaka, Electrode kinetics of (Fe(CN)64-/3-) and (Fe(CN)53-/2-) complexes confined to polymer film on graphite surfaces, J. Am. Chem. Soc., 105, 6003-6008(1983). 

  3. K. Liu, P. Yu, Y. Lin, Y. Wang, T. Ohsaka, L. Mao, Online Electrochemical Monitoring of Dynamic Change of Hippocampal Ascorbate: Toward a Plattform for In Vivo Evaluation of Antioxidant Neuroprotective Efficiency against Carebral Ischemia Injury, Anal. Chem. 85, 9947-9954 (2013). 

  4.M. R. Rahman, T. Okajima, T. Ohsaka, Selective detection of As(III) at the Au(111)-like polycrystalline gold electrode,Anal.Chem., 82, 9169-9176(2010). 

  5.J. F. Wu, Y. Che, T. Okajima, F. Matsumoto, K. Tokuda and T. Ohsaka. Hydrodynamic Chronocoulometric Determination of Diffusion Coefficients   and Concentrations of Dioxygen in Media of Quinoline, Isoquinoline and Methylquinolines, Anal. Chem.,1999, 71(18): 4056-4060 .  

  6.S.H.Noh, M.H.Seo, X.Ye, Y.Makinose, T.Okajima, N.Matsushita, B.Han,T.Ohsaka, Design of an Active and Durable Catalyst for Oxygen Reduction Reaction Using Encapsulated Cu with N-doped Carbon Shells (Cu@N-C) Activated by CO2 Treatment, J. Mater. Chem.A, 3, 22031-22034(2015). 

  7.C. R. Raj, A. Samanta, S. H. Noh, S. Mondel, T. Okajima, T. Ohsaka, Emerging new generation electrocatalysts for oxygen reduction reaction”,J. Mater. Chem.A, 4, 11156-11178 (2016). 

  8. S.H.Noh, B. Han, T.Ohsaka, First Principles Computational Study of Highly Stable and Active Ternary PtCuNiNanocatalyst for Oxygen Reduction Reaction, Nano Research, 8, 3374-3404(2015). 

  9. Y. Tian, L. Mao, T.Okajima, T.Ohsaka, A carbon fiber microelectrode-based third-generation biosensor for superoxide anion, Biosens.Bioelectron., 21, 557-564(2005). 

  10. J. Wu, D. Zhang, H. Niwa, Y. Harada, M. Oshima, H. Ofuchi, Y. Nabae, T. Okajima, T. Ohsaka,Enhancement in Kinetics of Oxygen Reduction Reaction on a Nitrogen-doped Carbon Catalyst by Introduction of Iron via Electrochemical Methods, Langmuir, 31, 5529-5536(2015). 

  11. S.Kunimura, T.Ohsaka, N.Oyama, Preparation of thin polymeric films on electrode surfaces by electropolymerization of o-aminophenol, Macromolecules, 21,894-900(1988). 

  12. I. Ismail, T. Okajima, S. Kawauchi, T. Ohsaka, Studies on the early oxidation process of dopamine by electrochemical measurements and quantum chemical calculations, Electrochim.Acta, 211, 777-786 (2016). 

  13.A. Muthukrishnan, Y. Nabae, T.Okajima, T.Ohsaka, Kinetic Approach to Investigate the Mechanistic Pathways of Oxygen Reduction on Fe-Containing N-Doped Carbon Catalysts, ACS Catalysis, 5, 5194-5202(2015). 

  14.M. S. El-Deab, F. Kitamura, T. Ohsaka, Poisoning Effect of Selected Hydrocarbon Impurities on the Catalytic Performance of Pt/C Catalysts towards the Oxygen Reduction Reaction, J. Electrochem. Soc.,160, F651-F658 (2013). 

 
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