文章信息/Info

Title:

Recent Advances on Low-platinum Catalyst with Core-shell Structure for Fuel Cell Application

作者:

余錦南; 廖世軍*

廣東省燃料電池技術重點實驗室，華南理工大學化學與化工學院

Author(s):

YU Jinnan;  LIAO Shijun*

The Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou

關鍵詞:

低鉑催化劑; 核殼結構; 燃料電池; 制備方法

Keywords:

low-platinum catalyst;  core-shell structure;  fuel cell;  preparation method

DOI:

10.7502/j.issn.1674-3962.2018.11.05

文獻標志碼:

A

摘要:

傳統的Pt碳催化劑，由于僅僅處于納米粒子表層的Pt原子參與電催化反應，而大多數位于粒子內層的Pt卻未能得到有效利用，由此造成的燃料電池高昂成本阻礙了它的大規模商業化進程。核殼結構催化劑是近年來出現的一類極其重要的低鉑催化劑，這類催化劑是使用廉價貴金屬、過渡金屬、合金及導電化合物的納米粒子作為核，在其表面覆蓋原子層厚度或者幾個原子層厚度的Pt為殼層而制得的新型高性能催化劑。核殼結構低鉑催化劑可大幅度降低燃料電池的貴金屬Pt的使用量，進而降低燃料電池的成本，是實現質子交換膜燃料電池大規模商業化的希望所在。有關核殼結構低鉑催化劑的研究已成為燃料電池領域最熱門的研究課題之一。本文綜述了近年來核殼結構低鉑催化劑的研究進展，包括核殼結構低鉑催化劑制備技術的研究進展，以廉價貴金屬、合金及導電化合物納米粒子作為核的新型核殼結構低鉑催化劑的設計、制備及其相關研究情況。介紹了不同類型的核與Pt殼層之間的相互作用，討論和總結了影響核殼結構低鉑催化劑電催化活性的相關因素。并對核殼結構低鉑催化劑的研究及其應用進行了展望。關鍵詞:

Abstract:

Traditional Pt/C carbon catalysts, due to the fact that only the Pt atoms in the surface layer of the nanoparticles participate in the electrocatalytic reaction, while most of the Pt in the inner layer of the particles have not been effectively utilized, give rise to the cost of the fuel cell and hinder its commercialization application in large-scale. The low-platinum core-shell catalyst (LPCSC) is a new type of highly active catalyst which employs the nanoparticles of other low price noble metal, transition metal, alloy and conductive compound as the core, where mono layer or several atomic layers of platinum shell deposited on. The LPCSC, which can sharply lower the usage of platinum on fuel cell and thus lower its cost, is considered as the hope for large-scale application of fuel cell. Research about LPCSC has become one of the hottest topics in the field of fuel cell. This review aims to introduce recent advances on LPCSC with highly electrocatalytic activity. We systematically reviewed the latest advances in the preparation methods, and the developments of new type LPCSCs with low price noble metal, alloy and conductive compound as the core, respectively, as well as the investigations on the interaction between the different core and platinum shell. Furthermore, we summarized the affecting factors on the electrocatalytic activity for LPCSC, and prospected the future development and application of the catalysts.