催化学报 ›› 2014, Vol. 35 ›› Issue (6): 877-883.DOI: 10.1016/S1872-2067(14)60126-1

• 研究论文 • 上一篇    下一篇

以细菌纤维素为前驱体简便制备氮掺杂碳纤维气凝胶作为高效氧还原催化剂

孟凡陆a,b, 李霖a,b, 吴中b,c, 钟海霞b,c, 李建忱a, 鄢俊敏a   

  1. a 吉林大学材料科学与工程学院, 汽车材料教育部重点实验室, 吉林长春130012;
    b 中国科学院长春应用化学研究所, 稀土资源利用国家重点实验室, 吉林长春130022;
    c 中国科学院大学, 北京100049
  • 收稿日期:2014-03-31 修回日期:2014-04-28 出版日期:2014-05-30 发布日期:2014-06-03
  • 通讯作者: 鄢俊敏
  • 基金资助:

    中国科学院“百人计划”;国家重点基础研究发展计划(973计划,2014CB932300,2012CB215500);国家自然科学基金(20921002,21101147,21203176).

Facile preparation of N-doped carbon nanofiber aerogels from bacterial cellulose as an efficient oxygen reduction reaction electrocatalyst

Fanlu Menga,b, Lin Lia,b, Zhong Wub,c, Haixia Zhongb,c, Jianchen Lia, Junmin Yana   

  1. a Key Laboratory of Automobile Materials, Ministry of Education, and College of Materials Science and Engineering, Jilin University, Changchun 130012, Jilin, China;
    b State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China;
    c University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2014-03-31 Revised:2014-04-28 Online:2014-05-30 Published:2014-06-03
  • Supported by:

    This work was financially supported by the Hundred Talents Program of Chinese Academy of Sciences, the National Basic Research Program of China (973 Program, 2014CB932300, 2012CB215500), and the National Natural Science Foundation of China (20921002, 21101147, 21203176).

摘要:

数十年来,碳气凝胶因其在催化剂载体、电容器和锂电池电极材料以及吸附剂等领域的潜在应用而备受关注.然而,传统碳气凝胶的制备往往使用昂贵且有毒的前驱体,其方法也较为复杂,不利于大规模生产及应用.本文介绍了一种以细菌纤维素为前驱体制备氮掺杂碳纤维气凝胶的方法.该方法廉价高效,简单易行且对环境无害.所制气凝胶具有密度低、孔隙度高、比表面积大以及导电性良好等优点.它继承了细菌纤维素生物质优异的三维交联多孔结构的特点,可直接用作氧还原催化剂,表现出优异的催化性能,预示着其广泛的应用前景.这在该领域的应用报道尚属首次.

关键词: 碳纤维气凝胶, 氮掺杂碳, 氧还原反应, 细菌纤维素

Abstract:

Carbon aerogels have attracted considerable attention over the past few decades as promising materials for catalyst supports, electrodes for supercapacitors and lithium-ion batteries, and adsorbents. However, expensive and toxic precursors as well as complicated synthetic methods dramatically limit their large-scale production and application. In this work, we developed a facile and effective route to prepare a N-doped carbon nanofiber aerogel (N-CNFA) with low mass density, continuous porosity, high specific surface area, and electrical conductivity from a bacterial cellulose precursor. Because of the highly porous and interconnected 3D structure, the obtained N-doped carbon aerogel was used directly as a catalyst for the oxygen reduction reaction (ORR), and it exhibited superior catalytic activity. This activity was much higher than that obtained without N-doping, and it can potentially be applied to high-performance fuel cells.

Key words: Carbon nanofiber aerogels, N-doped carbon, Oxygen reduction reaction, Bacterial cellulose