Zeolitic-imidazolate-framework-derived Co@Co3O4 embedded into iron, nitrogen, sulfur Co-doped reduced graphene oxide as efficient electrocatalysts for overall water splitting and zinc-air batteries

Zhu, Junke; Tu, Wenmao; Bai, Ziyu; Pan, Hongfei; Ji, Pengxia; Zhang, Heng; Deng, Zhao; Zhang, Haining

doi:10.1016/j.electacta.2019.134821

Cited by 36 publications

(14 citation statements)

References 50 publications

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“…Up till now, Co/Co 3 O 4 with supported carbon is among the most widely investigated catalysts for ORR in fuel cells [132][133][134]. Yin and coworkers [135] reported the fabrication of bifunctional electrocatalysis (ORR/OER) by the thermal treatment of a combination of cobalt-based MOF with carbon black (CB).…”

Section: Mof-derived Cobalt/cobalt Derivative-nanocarbon Electrocatalystsmentioning

confidence: 99%

Design Engineering, Synthesis Protocols, and Energy Applications of MOF-Derived Electrocatalysts

et al. 2021

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The core reactions for fuel cells, rechargeable metal–air batteries, and hydrogen fuel production are the oxygen reduction reaction (ORR), oxygen evolution reaction (OER), and hydrogen evolution reaction (HER), which are heavily dependent on the efficiency of electrocatalysts. Enormous attempts have previously been devoted in non-noble electrocatalysts born out of metal–organic frameworks (MOFs) for ORR, OER, and HER applications, due to the following advantageous reasons: (i) The significant porosity eases the electrolyte diffusion; (ii) the supreme catalyst–electrolyte contact area enhances the diffusion efficiency; and (iii) the electronic conductivity can be extensively increased owing to the unique construction block subunits for MOFs-derived electrocatalysis. Herein, the recent progress of MOFs-derived electrocatalysts including synthesis protocols, design engineering, DFT calculations roles, and energy applications is discussed and reviewed. It can be concluded that the elevated ORR, OER, and HER performances are attributed to an advantageously well-designed high-porosity structure, significant surface area, and plentiful active centers. Furthermore, the perspectives of MOF-derived electrocatalysts for the ORR, OER, and HER are presented.

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Section: Mof-derived Cobalt/cobalt Derivative-nanocarbon Electrocatalystsmentioning

confidence: 99%

Design Engineering, Synthesis Protocols, and Energy Applications of MOF-Derived Electrocatalysts

et al. 2021

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“…This composite can be used as a bifunctional electrocatalyst and exhibits excellent catalytic activity towards OER (an overpotential of 248 mV to afford 10 mA cm À 2 ) and HER (an overpotential of 66 mV at 10 mA cm À 2 ) in 1 M KOH. [21] Zhang and coworkers reported Co@Co 3 O 4 /FeNS-RGO electrocatalyst derived from Fe/ZIF-67/GO, which delivers overpotentials of 287 mV for OER and 130 mV for HER at 10 mA cm À 2 . When applied as both anode and cathode to build an electrolyzer, it only needs 1.65 V to afford 10 mA cm À 2 .…”

Section: Introductionmentioning

confidence: 99%

Carbon Cloth Supported Nitrogen Doped Porous Carbon Wrapped Co Nanoparticles for Effective Overall Water Splitting

et al. 2021

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The key to the practical application of overall water splitting is to develop high-efficient non-noble metal electrocatalysts. Herein, carbon cloth supported N-doped porous carbon wrapped Co nanoparticles (CC@Co-NPC) are constructed with high bifunctional catalytic activity toward oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in alkaline medium. Benefiting from the exposure of abundant Co active sites, and the synergistic effect between Co particles and N-doped carbon species, the CC@Co-NPC delivers small overpotentials of 286 and 340 mV at 100 mA cm À 2 with Tafel values of 59 and 97 mV dec À 1 towards OER and HER, respectively.

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“…The composite strategy for bifunctionalo xygen electrocatalysis has been demonstrated to be effective in many cases. [46][47][48][49][50][51][52][53][54] For instance, Chen et al reported ac omposite of manganese dioxide andn itrogen-doped carbon nanotubes with high bifunctional electrocatalytic reactivity. [55] The composite of NiFe layered doubleh ydroxides with Co, Nc o-doped carbon nanoframesw as also provedt ob ee ffective for bifunctional oxygen electrocatalysis.…”

Section: Introductionmentioning

confidence: 99%

“…The composite strategy for bifunctional oxygen electrocatalysis has been demonstrated to be effective in many cases . For instance, Chen et al.…”

Section: Introductionmentioning

confidence: 99%

A Composite Bifunctional Oxygen Electrocatalyst for High‐Performance Rechargeable Zinc–Air Batteries

Liu

Chang-xin

et al. 2020

ChemSusChem

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Rechargeable zinc–air batteries are considered as next‐generation energy storage devices because of their ultrahigh theoretical energy density of 1086 Wh kg−1 (including oxygen) and inherent safety originating from the use of aqueous electrolyte. However, the cathode processes regarding oxygen reduction and evolution are sluggish in terms of kinetics, which severely limit the practical battery performances. Developing high‐performance bifunctional oxygen electrocatalysts is of great significance, yet to achieve better bifunctional electrocatalytic reactivity beyond the state‐of‐the‐art noble‐metal‐based electrocatalysts remains a great challenge. Herein, a composite Co3O4@POF (POF=framework porphyrin) bifunctional oxygen electrocatalyst is proposed to construct advanced air cathodes for high‐performance rechargeable zinc–air batteries. The as‐obtained composite Co3O4@POF electrocatalyst exhibits a bifunctional electrocatalytic reactivity of ΔE=0.74 V, which is better than the noble‐metal‐based Pt/C+Ir/C electrocatalyst and most of the reported bifunctional ORR/OER electrocatalysts. When applied in rechargeable zinc–air batteries, the Co3O4@POF cathode exhibits a reduced discharge–charge voltage gap of 1.0 V at 5.0 mA cm−2, high power density of 222.2 mW cm−2, and impressive cycling stability for more than 2000 cycles at 5.0 mA cm−2.

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Zeolitic-imidazolate-framework-derived Co@Co3O4 embedded into iron, nitrogen, sulfur Co-doped reduced graphene oxide as efficient electrocatalysts for overall water splitting and zinc-air batteries

Cited by 36 publications

References 50 publications

Design Engineering, Synthesis Protocols, and Energy Applications of MOF-Derived Electrocatalysts

Design Engineering, Synthesis Protocols, and Energy Applications of MOF-Derived Electrocatalysts

Carbon Cloth Supported Nitrogen Doped Porous Carbon Wrapped Co Nanoparticles for Effective Overall Water Splitting

A Composite Bifunctional Oxygen Electrocatalyst for High‐Performance Rechargeable Zinc–Air Batteries

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