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Pt/TiSix-NCNT Novel Janus Nanostructure: A New Type of High-Performance Electrocatalyst
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2018-03-06 00:00:00 , DOI: 10.1021/acsami.7b15682 Gaixia Zhang 1, 2 , Mohammad Norouzi Banis 1 , Qiliang Wei 2 , Mei Cai 3 , Yong Zhang 1 , Ruying Li 1 , Shuhui Sun 1, 2 , Xueliang Sun 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2018-03-06 00:00:00 , DOI: 10.1021/acsami.7b15682 Gaixia Zhang 1, 2 , Mohammad Norouzi Banis 1 , Qiliang Wei 2 , Mei Cai 3 , Yong Zhang 1 , Ruying Li 1 , Shuhui Sun 1, 2 , Xueliang Sun 1
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Novel Janus nanostructured electrocatalyst (Pt/TiSix-NCNT) was prepared by first sputtering TiSix on one side of N-doped carbon nanotubes (NCNTs), followed by wet chemical deposition of Pt nanoparticles (NPs) on the other side. Transmission electron microscopy (TEM) studies showed that the Pt NPs are mainly deposited on the NCNT surface where no TiSix (i.e., between the gaps of TiSix film). This feature could benefit the increase in the stability of the Pt NP catalyst. Indeed, compared to the state-of-the-art commercial Pt/C catalyst, this novel Pt/TiSix-NCNT Janus structure showed ∼3 times increase in stability as well as significantly improved CO tolerance. The obvious performance enhancement could be attributed to the better corrosion resistance of TiSix and NCNTs than the carbon black that is used in the commercial Pt/C catalyst. Pt/TiSix-NCNT Janus nanostructures open the door for designing new type of high-performance electrocatalyst for fuel cells and other oxygen reduction reaction-related energy devices.
中文翻译：
Pt / TiSi x -NCNT新型Janus纳米结构：新型高性能电催化剂
通过首先在N掺杂碳纳米管（NCNT）的一侧溅射TiSi x，然后在另一侧湿化学沉积Pt纳米颗粒（NPs），制备出新型的Janus纳米结构电催化剂（Pt / TiSi x -NCNT）。透射电子显微镜（TEM）研究表明，Pt NPs主要沉积在没有TiSi x的NCNT表面上（即TiSi x薄膜的间隙之间）。该特征可以有益于增加Pt NP催化剂的稳定性。实际上，与最先进的商用Pt / C催化剂相比，这种新颖的Pt / TiSi x-NCNT Janus结构显示出约3倍的稳定性增加，并且显着提高了CO耐受性。明显的性能增强归因于TiSi x和NCNT的耐腐蚀性优于商用Pt / C催化剂中使用的炭黑。Pt / TiSi x -NCNT Janus纳米结构为设计用于燃料电池和其他与氧还原反应相关的能源设备的新型高性能电催化剂打开了大门。
更新日期：2018-03-06
中文翻译：
Pt / TiSi x -NCNT新型Janus纳米结构：新型高性能电催化剂
通过首先在N掺杂碳纳米管（NCNT）的一侧溅射TiSi x，然后在另一侧湿化学沉积Pt纳米颗粒（NPs），制备出新型的Janus纳米结构电催化剂（Pt / TiSi x -NCNT）。透射电子显微镜（TEM）研究表明，Pt NPs主要沉积在没有TiSi x的NCNT表面上（即TiSi x薄膜的间隙之间）。该特征可以有益于增加Pt NP催化剂的稳定性。实际上，与最先进的商用Pt / C催化剂相比，这种新颖的Pt / TiSi x-NCNT Janus结构显示出约3倍的稳定性增加，并且显着提高了CO耐受性。明显的性能增强归因于TiSi x和NCNT的耐腐蚀性优于商用Pt / C催化剂中使用的炭黑。Pt / TiSi x -NCNT Janus纳米结构为设计用于燃料电池和其他与氧还原反应相关的能源设备的新型高性能电催化剂打开了大门。
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