Silica-polydopamine core-shell self-confined templates for ultra-stable hollow Pt anchored N-doped carbon electrocatalysts

Guochang Li; Jian Li; Ziwei Zhou; Congling Li; Chao Cai; Bingkun Guo; Rodney D Priestley; Lei Han; Rui Liu

doi:10.1039/c7dt03021e

Silica-polydopamine core-shell self-confined templates for ultra-stable hollow Pt anchored N-doped carbon electrocatalysts

Dalton Trans. 2017 Dec 21;46(47):16419-16425. doi: 10.1039/c7dt03021e. Epub 2017 Oct 5.

Authors

Guochang Li¹, Jian Li², Ziwei Zhou², Congling Li², Chao Cai², Bingkun Guo³, Rodney D Priestley⁴, Lei Han⁵, Rui Liu²

Affiliations

¹ Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, School of Materials Science and Engineering, and Institute for Advanced Study, Tongji University, Shanghai, 201804, China. ruiliu@tongji.edu.cn and State Key Laboratory Base of Novel Functional Materials and Preparation Science, School of Materials Science & Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China. hanlei@nbu.edu.cn.
² Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, School of Materials Science and Engineering, and Institute for Advanced Study, Tongji University, Shanghai, 201804, China. ruiliu@tongji.edu.cn.
³ Materials Genome Institute, Shanghai University, Shanghai, 200444, China.
⁴ Department of Chemical and Biological Engineering, and Princeton Institute for the Science and Technology of Materials, Princeton University, Princeton, NJ 08544, USA. rpriestl@princeton.edu.
⁵ State Key Laboratory Base of Novel Functional Materials and Preparation Science, School of Materials Science & Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China. hanlei@nbu.edu.cn.

PMID: 28979954
DOI: 10.1039/c7dt03021e

Abstract

We present the use of silica-polydopamine (SiO₂@PDA) core-shell nanoparticles (NPs) as self-confined templates for the fabrication of ultra-stable hollow Pt anchored N-doped carbon nanospheres (Pt/HN-C). SiO₂@PDA nanospheres were fabricated by a facile one-pot process, followed by the deposition of Pt NPs onto the outer shell layer. The confinement and adhesion of the PDA framework ensured the distribution and stability of Pt NPs after carbonization at the carbon shell layer. The converted Pt/HN-C exhibited excellent catalytic performance and durability for the oxygen reduction reaction (ORR).