静电纺制备高性能钴基复合纤维电催化材料
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- 英文论文题名：High-Performance Cobalt-Based Heterogeneous Nanofiber Electrocatalysts Synthetized by Electrospinning
- 论文作者：缪月娥 ; 刘天西
- 英文论文作者：Yue-E Miao ; Tianxi Liu ; Key Laboratory for Modification of Chemical Fibers and Polymer Materials ; College of Materials Science and Engineering ; Donghua University
- 年：2016
- 作者机构：东华大学材料科学与工程学院纤维材料改性国家重点实验室;
- 论文关键词：静电纺丝 ; 纳米复合纤维 ; 多级结构 ; 非贵金属 ; 电催化反应
- 会议召开时间：2016-11-18
- 会议录名称：中国第四届静电纺丝大会（CICE 2016）摘要集
- 语种：中文
- 分类号：TQ340.64;O643.36
- 学会代码：ZGNM
- 会议名称：中国第四届静电纺丝大会(CICE 2016)
- 会议地点：中国北京
- 主办单位：中国复合材料学会超细纤维材料分会（筹）
- 学会名称：中关村科创纳米技术创新研究会
- 页数：1
- 文件大小：1422k
- 原文格式：D
- 会议级别：全国
摘要
具有高活性和长循环寿命的高性能电催化材料在能源存储与转换系统中尤为重要。静电纺丝技术是一种制备具有优异力学性能、高柔性、高比表面积和易量产的纳米纤维材料的有效方法[1-4]。本论文利用静电纺丝技术制备了氮掺杂碳纳米纤维(NCNF),以此提供一个具有三维导电网络的模板,用于高效负载具有电化学活性的钴基纳米粒子。由此得到具有多级结构的钴基氮掺杂碳纳米纤维复合材料(NCNF@Co_3O_4)(Fig.1a),结合了钴基纳米粒子的高活性、表面高效氮掺杂、以及碳纳米纤维的高导电性,因而在用于氧还原反应催化剂时较Pt/C显示了更正的峰电位、更高的电流密度和稳定性(Fig.1b),有望作为一种无贵金属的燃料电池催化剂得到应用。
High-performance electrocatalysts with excellent catalytic activity and long durability competitive to Pt are urgently necessary for the fast development of energy storage and conversion systems.Electrospinning has been proved to be an efficient technique to produce advanced fibrous materials with robust mechanical strength,fine flexibility,large surface area,and ease of scalable synthesis from various materials(e.g.,polymer,ceramic,carbon)for diverse applications.Herein,nitrogen-doped carbon nanofiber(NCNF) membrane has been developed via electrospinning,acting as a three-dimensionally networked and conductive template for immobilization of electrochemically activecobalt-based nanoparticles.Thus,cobalt-basedNCNF composite fibers with hierarchical structures are obtained,which subtly combine the synergistic effects between the electroactive cobalt-based nanoparticles,efficient surface nitrogen doping and highly conductive NCNF network.Therefore,the cobalt-basedNCNF composite exhibits excellent catalytic activity toward oxygen reduction reactions with positive Epeak potential,high current density and superior durability over the commercial Pt/C catalyst,being promising noble metal-free catalysts for practical fuel cell applications.
High-performance electrocatalysts with excellent catalytic activity and long durability competitive to Pt are urgently necessary for the fast development of energy storage and conversion systems.Electrospinning has been proved to be an efficient technique to produce advanced fibrous materials with robust mechanical strength,fine flexibility,large surface area,and ease of scalable synthesis from various materials(e.g.,polymer,ceramic,carbon)for diverse applications.Herein,nitrogen-doped carbon nanofiber(NCNF) membrane has been developed via electrospinning,acting as a three-dimensionally networked and conductive template for immobilization of electrochemically activecobalt-based nanoparticles.Thus,cobalt-basedNCNF composite fibers with hierarchical structures are obtained,which subtly combine the synergistic effects between the electroactive cobalt-based nanoparticles,efficient surface nitrogen doping and highly conductive NCNF network.Therefore,the cobalt-basedNCNF composite exhibits excellent catalytic activity toward oxygen reduction reactions with positive Epeak potential,high current density and superior durability over the commercial Pt/C catalyst,being promising noble metal-free catalysts for practical fuel cell applications.
引文
[1]Lai FL,Miao YE,Huang YP,Zhang YF,Liu TX.ACSAppl.Mater.Interfaces2016,8,3558.
[2]Yan JJ,Lu HY,Huang YP,Fu J,Mo SY,Wei C,Miao YE,Liu TX.J.Mater.Chem.,42015,3(46),23299.
[3]Huang YP,Lu HY,Gu HH,Fu J,Mo SY,Wei C,Miao YE,Liu TX.Nanoscale2015,7(44),18595.
[4]Huang YP,Miao YE,Fu J,Mo SY,Wei C,Liu TX.J.Mater.Chem.,42015,3(31),16263.
[2]Yan JJ,Lu HY,Huang YP,Fu J,Mo SY,Wei C,Miao YE,Liu TX.J.Mater.Chem.,42015,3(46),23299.
[3]Huang YP,Lu HY,Gu HH,Fu J,Mo SY,Wei C,Miao YE,Liu TX.Nanoscale2015,7(44),18595.
[4]Huang YP,Miao YE,Fu J,Mo SY,Wei C,Liu TX.J.Mater.Chem.,42015,3(31),16263.