02165nas a2200205   4500008004100000022001400041245012400055210006900179260000900248300001400257490000700271520139800278100002301676700003001699700002001729700001801749700002401767700003801791856013001829       2024                        eng d  a0887-062400aCo-incorporated N-doped micro-meso porous carbon as an electrocatalyst for oxygen reduction reaction and Zn-air battery0 aCoincorporated Ndoped micromeso porous carbon as an electrocatal  cAPR   a7196-72070 v383 a<p>
	Metal-organic frameworks are considered ideal precursors for the preparation of transition-metal, heteroatom-doped carbon catalysts that are perceived to be efficient electrocatalysts for energy storage devices. Herein, we demonstrate the synthesis of ZIF-67-derived Co-incorporated N-doped porous carbon catalysts supported on high surface area microporous carbon prepared from a lotus seed shell. The combination of the two carbon catalysts in different weight ratios resulted in Co-incorporated N-doped carbon sheets with tuned surface area and porosity, enabling enhanced oxygen reduction reaction (ORR) activity in an alkaline medium. The optimized carbon catalyst ZL 600 (3:1) exhibited a half-wave potential of 0.79 V vs RHE and a limiting current density of -4.38 mA cm(-2) in 0.1 M KOH solution with higher stability and methanol tolerance. The optimized sample ZL 600 (3:1) demonstrated as a cathode in a zinc-air battery exhibited an open circuit voltage of 1.29 V with a flat discharge profile at a current rate of 10 mA cm(-2). The homemade system produced a specific capacity of 610 mAh g(-1) and a peak power density of 111 mW cm(-2), comparable to the cathode made with Pt/C. The high micro-mesoporosity, pyridinic and pyrrolic nitrogen contents, as well as enriched Co-active centers protected by carbon sheets favorably contributed to the efficient ORR mechanism.</p>
1 aPriya, Vaishna, K.1 aKharabe, Geeta, Pandurang1 aBarik, Sidharth1 aMohamed, Peer1 aKurungot, Sreekumar1 aHareesh, Unnikrishnan, Nair Saras  uhttps://library.ncl.res.in/content/co-incorporated-n-doped-micro-meso-porous-carbon-electrocatalyst-oxygen-reduction-reaction