Journal
ACS CATALYSIS
Volume 13, Issue 3, Pages 1856-1862Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.2c05613
Keywords
encaging structure; single atoms; ultralow loading; oxygen reduction reaction; proton-exchange membrane fuel cell
Categories
Ask authors/readers for more resources
By encaging platinum single atoms and ultrafine nanoparticles into periodic nanopores of three-dimensional graphene-like architecture carbon, a cathode configuration with an ultralow platinum loading exhibits superior mass activity and stability, contributing to the cost reduction of proton-exchange membrane fuel cells.
Ultralow platinum loading and high electrocatalytic performance at the cathode are critical to lower costs of proton-exchange membrane fuel cells (PEMFCs). Encaging platinum catalysts into pore channels by geometric constraints and chemical interactions can orchestrate spatial organization, stabilize multitype sites, minimize platinum loading, and resist surface poisoning. Here, we report the design and synthesis of encaging platinum single atoms and ultrafine nanoparticles to periodic nanopores of three-dimensional graphene-like architecture carbon by a transformative strategy. The PEMFC with such unique cathodic configuration at an ultralow platinum loading of 0.02 mgPt cm-2 exhibits a superior mass activity of 8.30, 1.64 times that of commercial Pt/C, DOE 2025 activity target, respectively, and a great stability with a power density retention of 70.8% after the longterm stability test. This work offers an insight into the design of unique confinement electrocatalysts for electrochemical energy technologies and the industrial implementation of fuel cells.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available