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Updated: Aug 6, 2026
Zinc-Sponge Battery Electrodes that Suppress Dendrites
Published on: September 29, 2020
Phosphorus-induced 0D/1D intertwined N, P-codoped Fe-N-C hierarchical architectures for highly stable zinc-air
Linlin Wang1, Yafei Guo2, Wenhui Zhao2
1School of Materials Science and Engineering, Northeastern University, Shenyang, Liaoning 110819, PR China; Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province, School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao, Hebei 066004, PR China.
Abstract:
Developing highly efficient and durable non-precious metal electrocatalysts for oxygen reduction reaction (ORR) remains a critical challenge for the practical application of zinc-air batteries (ZABs). Herein, we successfully synthesized a robust N, P-codoped Fe-N-C catalyst featuring a unique 0D/1D intertwined architecture through a phosphorus-induced heteroatom-modulation strategy. By utilizing FePc-encapsulated ZIF-8 as a precursor, the in-situ growth of 1D carbon nanotubes from 0D carbon dodecahedrons was achieved, constructing a 3D hierarchical conductive network. Experimental and mechanistic analyses reveal that P-doping serves as the key morphology director. It not only induces the formation of structural-stable 1D nanotubes to enhance electron transfer but also modulates the electronic density of Fe centers to elevate electro-oxidation resistance. Consequently, the optimized catalyst exhibits a superior half-wave potential (E1/2) of 0.884 V (vs. RHE) in alkaline media. Remarkably, the as-assembled ZAB achieves an exceptional stability of over 1300 h, demonstrating the superior structural integrity and durability of the 0D/1D network. This research offers a strategic design for engineering high-performance and stable Fe-N-C catalysts through synergistic 0D/1D architecture construction.
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