Beilstein Arch. 2026, 20266. https://doi.org/10.3762/bxiv.2026.6.v1
Published 29 Jan 2026
Engineering metal hydroxide–carbon interfaces with controlled microstructure is critical for optimizing electrochemical performance, yet conventional fabrication strategies often suffer from non-uniform deposition and weak interfacial coupling. Herein, we report an electrodeposition-driven strategy to construct Mn(OH)2-decorated carbon nanofiber (CNF) electrodes with tunable morphology and enhanced electrochemical activity. Importantly, polymeric ionomer (Nafion) is employed as a microenvironment-regulating medium, functioning as a binder to govern Mn(OH)2 growth. Specifically, systematic modulation of Nafion concentration induces distinct Mn(OH)2 deposition morphologies, which in turn give rise to pronounced differences in electrical conductivity and interfacial charge-transfer kinetics. The optimized Mn(OH)2/CNF electrodes exhibit the enhanced oxygen evolution reaction activity with lowered charge-transfer resistance, demonstrating the strong correlation between deposition microenvironment, morphological evolution, and electrochemical performance.
Keywords: carbon nanofiber; polymeric ionomer; electrodeposition; manganese hydroxide; oxygen evolution reaction
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Yim, Y.; Kim, M. H.; Jin, D. Beilstein Arch. 2026, 20266. doi:10.3762/bxiv.2026.6.v1
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