· 논문명 : Facile encapsulation strategy for uniformly-dispersed catalytic nanoparticles/carbon nanofibers toward advanced

                Zn–air battery          

· 저   자 : Seong-Woon Yoon, Dae-Kwon Boo, Hyunmin Na, Tae-Yeon Kim, Hyun-Soo Chang, Ji Sung Park, Su-Ho Cho,

                Ji-Won Jung*, Hyeong Min Jin*

· 게재지 : Journal of Materials Chemistry A (2025, 13, 3339-3349)

· 초록

Catalyst-loaded carbon nanofibers (CNFs) have been a promising platform to enhance the efficiency of key electrochemical 

reactions, crucial for the operation of fuel cells, metal-air batteries, and the reduction of pollutants. A persistent challenge, 

however, has been the uniform distribution and strong binding of ultrafine active catalytic nanoparticles on the CNF surfaces. 

To overcome this issue, this study introduces a facile synthesis strategy using electrospun blended nanofibers of 

polyacrylonitrile and poly(4-vinylpyridine) (P4VP) for the uniform attachment of various metal catalyst ions. Metal complex

ion precursors are selectively loaded into P4VP domains and subsequent one-step pyrolysis to readily obtain CNFs densely

populated with uniformly dispersed metal nanoparticles enveloped by a P4VP-derived nitrogen-doped carbon layer. The final 

C@Ir/CNF1000, composed of iridium nanoparticles (average diameter: ∼3.38 ± 1.18 nm) on CNFs with a carbon overlayer

and carbonized at 1000 °C, significantly improves the dual-functionality and cycle stability of zinc-air batteries. Our findings

present a novel and scalable strategy for improving catalytic efficiency in energy technologies, marking a significant contribution

to the field of sustainable energy and environmental applications.