用于碱性介质中高效乙醇电氧化的无碳和无粘结剂核壳纳米线阵列。
Carbon- and Binder-Free Core-Shell Nanowire Arrays for Efficient Ethanol Electro-Oxidation in Alkaline Medium.
机构信息
Key Laboratory of Hubei Province for Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology , Wuhan 430081, P. R. China.
Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University , Harbin 150001, P. R. China.
出版信息
ACS Appl Mater Interfaces. 2018 Feb 7;10(5):4705-4714. doi: 10.1021/acsami.7b16615. Epub 2018 Jan 23.
To achieve high electrochemical surface area (ECSA) and avoid carbon support and binder in the anode catalyst of direct ethanol fuel cell, herein, we design freestanding core-shell nickel@palladium-nickel nanowire arrays (Ni@Pd-Ni NAs) without carbon support and binder for high-efficiency ethanol electro-oxidation. Bare Ni nanowire arrays (Ni NAs) are first prepared using the facile template-assistant electrodeposition method. Subsequently, the Ni@Pd-Ni NAs are formed using one-step solution-based alloying reaction. The optimized Ni@Pd-Ni NA electrode with a high ECSA of 64.4 m g exhibits excellent electrochemical performance (peak current density: 622 A g) and cycling stability for ethanol electro-oxidation. The facilely obtained yet high-efficiency core-shell Ni@Pd-Ni NA electrode is a promising electrocatalyst, which can be utilized for oxygen reduction reaction, urea, hydrazine hydrate, and hydrogen peroxide electro-oxidation, not limited to the ethanol electro-oxidation.
为了实现高电化学表面积（ECSA）并避免直接乙醇燃料电池阳极催化剂中的碳载体和粘结剂，本文设计了无碳载体和粘结剂的独立核壳镍@钯-镍纳米线阵列（Ni@Pd-Ni NAs），用于高效乙醇电氧化。首先使用简便的模板辅助电沉积法制备裸镍纳米线阵列（Ni NAs）。随后，通过一步基于溶液的合金化反应形成 Ni@Pd-Ni NAs。优化后的 Ni@Pd-Ni NA 电极具有 64.4 m g 的高 ECSA，表现出优异的电化学性能（峰值电流密度：622 A g）和乙醇电氧化的循环稳定性。这种简便获得的高效核壳 Ni@Pd-Ni NA 电极是一种有前途的电催化剂，可用于氧还原反应、尿素、水合肼和过氧化氢电氧化，不仅限于乙醇电氧化。
Zotero 插件