Design of active and stable catalysts by embedding nitrogen-doped carbon oxygen reduction reaction CoxOy nanoparticles into

作     者：Fan Yang Mikel Abadia Chaoqiu Chen Weike Wang Le Li Lianbing Zhang Celia Rogero Andrey Chuvilin Mato Knez 

作者机构：CIC nanoGUNE Consofider Tolosa Hifibidea 76 20018 Donostia-San Sebastian Spain Centro de Fisica de Materials CFM/MPC (CSIC-UPV/EHU) Paseo Manuel de Lardizabal 5 20018 Donostia-San Sebastian Spain School of Life Sciences Northwestern Polytechnical University Xi'an 710072 China Donostia International Physics Center (DIPC) Paseo Manuel de Lardizabal 4 20018 Donostia-San Sebastian Spain IKERBASQUE Basque Foundation for Science Maria Diaz de Haro 3 48013 Bilbao Spain 

基　　金：support by the Spanish Ministry of Economy and Competitivity (MINECO) the Basque government 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2017年第10卷第1期

页      码：97-107页

摘      要：The oxygen reduction reaction （ORR） is essential in research pertaining to life science and energy. In applications, platinum-based catalysts give ideal reactivity, but, in practice, are often subject to high costs and poor stability. Some costefficient transition metal oxides have exhibited excellent ORR reactivity, but the stability and durability of such alternative catalyst materials pose serious challenges. Here, we present a facile method to fabricate uniform CoxOy nanoparticles and embed them into N-doped carbon, which results in a composite of extraordinary stability and durability, while maintaining its high reactivity. The half-wave potential shows a negative shift of only 21 mV after 10,000 cycles, only one third of that observed for Pt/C （63 mV）. Furthermore, after 100,000 s testing at a constant potential, the current decreases by only 17%, significantly less than for Pt/C （35%）. The exceptional stability and durability results from the system architecture, which comprises a thin carbon shell that prevents agglomeration of the CoxOy nanoparticles and their detaching from the substrate.

主 题 词：atomic layer deposition cobalt oxide polydopamine oxygen reduction reaction 

学科分类：07[理学] 

核心收录：

D　O　I：10.1007/s12274-016-1269-5

馆 藏 号：203214946...