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.