| 氮化钨-钨/掺氮有序介孔碳复合材料的制备及其氧还原性能 |
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| 引用本文： | 郭虎,李玲慧,王涛,范晓莉,宋力,龚浩,夏伟,姜澄,高斌,何建平.氮化钨-钨/掺氮有序介孔碳复合材料的制备及其氧还原性能[J].无机化学学报,2013,29(18). |
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| 作者姓名： | 郭虎 李玲慧 王涛 范晓莉 宋力 龚浩 夏伟 姜澄 高斌 何建平 |
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| 作者单位： | 南京航空航天大学材料科学与技术学院, 江苏省能量转换材料与技术重点实验室, 南京 210016,南京航空航天大学材料科学与技术学院, 江苏省能量转换材料与技术重点实验室, 南京 210016,南京航空航天大学材料科学与技术学院, 江苏省能量转换材料与技术重点实验室, 南京 210016,南京航空航天大学材料科学与技术学院, 江苏省能量转换材料与技术重点实验室, 南京 210016,南京航空航天大学材料科学与技术学院, 江苏省能量转换材料与技术重点实验室, 南京 210016,南京航空航天大学材料科学与技术学院, 江苏省能量转换材料与技术重点实验室, 南京 210016,南京航空航天大学材料科学与技术学院, 江苏省能量转换材料与技术重点实验室, 南京 210016,南京航空航天大学材料科学与技术学院, 江苏省能量转换材料与技术重点实验室, 南京 210016,南京航空航天大学材料科学与技术学院, 江苏省能量转换材料与技术重点实验室, 南京 210016,南京航空航天大学材料科学与技术学院, 江苏省能量转换材料与技术重点实验室, 南京 210016 |
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| 基金项目： | 国家自然科学基金（No.11575084，51602153）、江苏省自然科学基金（No.BK20160795）和江苏省高校优势学科建设工程（PAPD）项目资助。 |
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| 摘 要： | 采用软模板法制备了氮化钨-钨/掺氮有序介孔碳复合材料（WN-W/NOMC），作为一种高比表面积且价格低廉的阴极氧还原反应催化剂。通过适量添加尿素来改变复合材料中的氮含量，在掺氮量为7%（w/w）时，实验发现材料能够保持完整有序介孔结构，测试其比表面积高达835 m2·g-1，透射电子显微镜（TEM）测试结果显示其催化颗粒均匀地分散在氮掺杂有序介孔碳载体上。在O2饱和的0.1 mol·L-1 KOH溶液中测试了材料的氧还原催化性能（ORR），显示其起始电位为0.87 V（vs RHE），极限电流密度为4.49 mA·cm-2，氧还原反应的转移电子数为3.4，接近于20%（w/w）商业Pt/C的3.8，说明该材料表现出近似4电子的氧还原反应途径。研究结果表明，WN-W/NOMC的催化性能虽然稍弱于商业铂碳（0.99 V，5.1 mA·cm-2），但其具有远超铂碳的循环稳定性和耐甲醇毒化能力。
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| 关 键 词： | 氮化钨 电催化 有序介孔碳 氧还原反应 燃料电池 |
| 收稿时间： | 2018/7/18 0:00:00 |
| 修稿时间： | 2018/9/17 0:00:00 |
Preparation and Catalytic Activity for Oxygen Reduction Reaction of Tungsten Nitirde-Tungsten/Nitrogen Doped Ordered Mesoporous Carbon |
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| GUO Hu,LI Ling-Hui,WANG Tao,FAN Xiao-Li,SONG Li,GONG Hao,XIA Wei,JIANG Cheng,GAO Bin and HE Jian-Ping.Preparation and Catalytic Activity for Oxygen Reduction Reaction of Tungsten Nitirde-Tungsten/Nitrogen Doped Ordered Mesoporous Carbon[J].Chinese Journal of Inorganic Chemistry,2013,29(18). |
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| Authors: | GUO Hu LI Ling-Hui WANG Tao FAN Xiao-Li SONG Li GONG Hao XIA Wei JIANG Cheng GAO Bin and HE Jian-Ping |
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| Institution: | Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China,Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China,Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China,Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China,Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China,Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China,Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China,Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China,Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China and Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
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| Abstract: | Tungsten nitride-Tungsten/nitrogen doped ordered mesoporous carbon(WN/W-NOMC), as a non-precious-metal cathode catalyst for oxygen reduction reaction(ORR), was successfully synthesized through a soft-template method. The amount of nitrogen was adjusted by urea, and when the content of nitrogen was 7%(w/w), the obtained composite had highly ordered mesoporous structure, and its specific surface area reached to 835 m2·g-1. Transmission electron microscope(TEM) shows that the catalytic particles were uniform supported on NOMC. ORR test was conducted in O2-staturated 0.1 mol·L-1 KOH solution, the oneset potential is 0.87 V(vs RHE) and the limiting current density is 4.49 mA·cm-2. The transfer number of electron was 3.4, which was close to commercial 20%(w/w) Pt/C(3.8), indicated that WN-NOMC exhibited an approximate 4e- transfer pathway during the ORR process. Though the catalytic activity is less than Pt/C, the excellent methanol tolerance and long-time electrochemical stability make WN-W/NOMC to be a potential electrode catalyst for ORR. |
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| Keywords: | tungsten nitride electrocatalysis ordered mesoporous carbon oxygen reduction reaction fuel cells |
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