Overcoming Carbon-Shell Passivation in Biomass-Templated NiFe2O4/rGO@C Composites via a Urea-Assisted One-Pot Optimization Strategy for Enhanced Electrochemical Nitrite Sensing
Biomass-templated spinel ferrite/carbon nanocomposites are promising electrode materials; however, dense carbon shells formed during low-temperature carbonization can block electrolyte access to active sites and impair electrochemical performance. The role of this carbon-shell passivation in biomass-derived ferrite/car...