Improved electrocatalytic properties of bundled B/N co-doped electrospun carbon nanofibers with Pt nanostructures through dopant-induced metal-support interaction (DIMSI)

被引：7

作者：

Shanmugapriya, Sathyanarayanan ^{[1
]}

Zhu, Pei ^{[2
]}

Ganeshbabu, Mariappan ^{[1
]}

Lee, Yun Sung ^{[3
]}

Zhang, Xiangwu ^{[2
]}

Selvan, Ramakrishnan Kalai ^{[1
,2
]}

机构：

[1] Bharathiar Univ, Dept Phys, Energy Storage & Convers Devices Lab, Coimbatore 641046, Tamil Nadu, India

[2] North Carolina State Univ, Wilson Coll Text, Dept Text Engn Chem & Sci, Fiber & Polymer Sci Program, Raleigh, NC 27695 USA

[3] Chonnam Natl Univ, Dept Chem Engn, Gwangju 61186, South Korea

来源：

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2022年 / 284卷

基金：

新加坡国家研究基金会;

关键词：

Boron; Nitrogen; CNFs; Electrocatalyst; DIMSI; OXYGEN REDUCTION REACTION; HYDROGEN EVOLUTION; HIGHLY EFFICIENT; BIFUNCTIONAL ELECTROCATALYSTS; PLATINUM NANOPARTICLES; METHANOL OXIDATION; SUPERIOR ACTIVITY; CODOPED CARBON; POROUS CARBON; BORON;

D O I：

10.1016/j.mseb.2022.115880

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The dispersion of platinum nanoparticles over B/N functionalized carbon nanofibers (CNFs) is studied using a simple electrospinning technique. The ratio of boron and nitrogen for the uniform and agglomeration-free Pt loading is optimized. Among the prepared electrocatalysts, Pt-loaded CNFs with an equal amount of B and N (Pt/HCNF-III) exhibit remarkable electrocatalytic activity towards the oxygen reduction, methanol oxidation, and hydrogen evolution reactions. Pt/HCNF-III provides a significant ECSA (62.57 m(2)/gm). The Pt/HCNF-III being an efficient ORR electrocatalyst follows a 4-electron pathway and renders high half-wave potential. Moreover, Pt/HCNF-III displays relatively high mass activities of 324.77 and 6.17 A g(-1) during MOR and HER, respectively. Pt/HCNF-III also demands a minimal overpotential (54 mV) and Tafel slope (33 mV dec(-1)) during HER. Thus, a unique phenomenon of dopant-induced metal support interaction has enhanced the eletrocatalytic activity, stability, and selectivity of the prepared electrocatalysts.

引用

页数：13