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Mechanistic insight into collectively exhaustive CoPi-NPC nanosheets for oxygen reduction reaction and Zn-air battery
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DOI：10.1016/j.apcatb.2022.121656.png)
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Abstract
En 中文
Here, we report a collectively exhaustive CoPi-NPC (cobalt phosphate moieties incorporated into the N, P-doped carbon) nanosheets for oxygen reduction reaction (ORR) and rechargeable zinc-air battery (ZAB) applications. The unprecedented CoPi-NPC nanosheets were synthesized from the cobalt-diethyl dithiocarbamate coordination complex by using room-temperature crystallization and carbonization processes. The fabricated nanosheets catalyze the critical ORR via a four-electron transfer through an associative reaction pathway in which the O-O bond cleavage can be recognized as the rate-determining step, offering high positive onset (similar to 0.925 V vs. RHE) and the half-wave potentials (E-1/2 = similar to 0.796 V vs. RHE). The assembled ZAB based on porous CoPi-NPC-900 air cathode delivered the maximum power density of similar to 186 mW cm(-2), and large specific capacity of similar to 729 mAh g(-1). Hence, this study opens up a new avenue to exploit various efficient non-precious electrocatalysts through different transition metal-diethyl dithiocarbamate coordination complexes.
Keywords:
CoPi-NPC-900 nanosheets
Violet-crystals
Cobalt-diethyl dithiocarbamate complex
Oxygen reduction reaction
Zinc-air battery
Journal
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IF:
20.3
Papers:
215
Citations:
16.3W
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Cited Papers