Hierarchical pore engineering in waste-derived carbons for supercapacitors: bridging the performance gap from three-electrode evaluation to practical two-electrode devices

Description

Mustapha Balarabe Idris, Bhekie Mamba, and Fuku Xolile review supercapacitors built from porous carbons made out of waste. They focus on a known gap: lab tests with a three-part setup often report far higher charge storage than real two-part devices deliver. The review explains why the simpler setup can inflate results, through low material loading, narrow voltage ranges, fluid effects, and ignored internal losses.

The authors then weigh how pore size and layout shape real device behavior. Very high surface area alone often fails, because ions still need open paths and the carbon still needs to carry current well. Layered pore designs and added atoms get a careful reappraisal, with real gains set apart from overstated ones. The review closes with design rules for electrodes that hold up under real test conditions, plus notes on scale-up, repeatability, and environmental cost.

Catalog record

Source: https://europepmc.org/articles/PMC13227491