Engineering sinter-resistant pyrochlore nanofibers with triple-phase boundaries for acidic oxygen evolution

This work proposes a multiscale electrospinning strategy for synthesizing Tb₂Ru₂O₇. The nanofibers suppress sintering through spatial confinement while hierarchical pores enhance mass transfer. Selecting different precursors allows structural tuning and optimized bubble desorption. The resulting nanofiber-derived catalyst achieves outstanding performance of 10 mA cm^-2 at just 246 mV overpotential.