首页|Herbal residue-derived N, P co-doped porous hollow carbon spheres as high-performance electrocatalysts for oxygen reduction reaction under both alkaline and acidic conditions
Herbal residue-derived N, P co-doped porous hollow carbon spheres as high-performance electrocatalysts for oxygen reduction reaction under both alkaline and acidic conditions
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NSTL
Elsevier
? 2021 Elsevier Inc.Development of carbon-based oxygen reduction reaction (ORR) catalysts with performance superior to noble metals across a wide pH range has been a formidable challenge. Herein, porous hollow carbon spheres co-doped with N, P (NH3-NPCS-900) is directly synthesized from the herbal residues of Lasiosphaera seu Calvatia (LSC). Critically, the N content was significantly enhanced in the presence of ammonia (NH3) and formed a hierarchical porous structure and a large specific surface area (984.7 m2 g?1). With the synergistic effect of these contributions, the NH3-NPCS-900 catalyst exhibit excellent ORR catalytic activity across acidic (E1/2 = 0.615 V) and alkaline solutions (E1/2 = 0.862 V). Zn-air batteries with NH3-NPCS-900 exhibit high peak power density (188 mW cm?2) and better cycle durability (>180 h), showing its potential and promise in applications. This study provides valuable direction and insight into how to develop porous carbon with highly efficient ORR catalytic activity from biomass.
State Key Laboratory of Separation Membranes and Membrane Processes/ National Center for International Joint Research on Separation Membranes School of Materials Science and Engineering Tiangong University
School of Chemistry and Chemical Engineering Tiangong University
NSTL
Elsevier
