Pt-Fe catalyst nanoparticles supported on single-wall carbon nanotubes: Direct synthesis and electrochemical performance for methanol oxidation
Pt-Fe catalyst nanoparticles supported on single-wall carbon nanotubes: Direct synthesis and electrochemical performance for methanol oxidation
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单壁碳纳米管负载的 Pt-Fe 催化剂纳米粒子：甲醇氧化的直接合成和电化学性能
DOI：
10.1016/j.jpowsour.2013.04.104
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发表时间：
2013-11
影响因子：
9.2
通讯作者：
Zhao, Xinluo
中科院分区：
文献类型：
--
作者：
Ma, Xiaohui;Luo, Liqiang;Zhu, Limei;Yu, Liming;Sheng, Leimei;An, Kang;Ando, Yoshinori;Zhao, Xinluo
采用一步氢弧放电蒸发法制备了负载Pt - Fe单壁碳纳米管（SWCNTs）。在蒸发过程中，SWCNTs和Pt-Fe纳米颗粒同时形成。为了获得新型的Pt-Fe /SWCNTs甲醇氧化催化剂，对这些材料进行了高温氢处理和盐酸浸泡提纯和活化。电化学测量结果表明，Pt - fe /SWCNTs催化剂对甲醇氧化的电催化活性比商用Pt/C催化剂高得多，稳定性和耐久性也更好，表明其在直接甲醇燃料电池中具有很大的应用潜力。
Single-wall carbon nanotubes (SWCNTs) supported Pt–Fe nanoparticles have been prepared by one-step hydrogen arc discharge evaporation of carbon electrode containing both Pt and Fe metal elements. The formation of SWCNTs and Pt–Fe nanoparticles occur simultaneously during the evaporation process. High-temperature hydrogen treatment and hydrochloric acid soaking have been carried out to purify and activate those materials in order to obtain a new type of Pt–Fe/SWCNTs catalyst for methanol oxidation. The Pt–Fe/SWCNTs catalyst performs much higher electrocatalytic activity for methanol oxidation, better stability and better durability than a commercial Pt/C catalyst according to the electrochemical measurements, indicating that it has a great potential for applications in direct methanol fuel cells.
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