Large-scale defect-rich iron/nitrogen co-doped graphene-based materials as the excellent bifunctional electrocatalyst for liquid and flexible all-solid-state zinc-air batteries

Liu, Yuepeng; Bao, Jiehua; Liu, Guohong; Zhang, Lei; Zhang, Shenzhi; Wang, Likai; Niu, Xueliang; Sun, Peng; Xu, Liping

doi:10.1016/j.jcis.2021.09.070

Cited by 57 publications

(18 citation statements)

References 65 publications

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“…30 As shown in Figure S2 of the Supporting Information, the I D /I G value of Ox-MnCoNi-C (4 h) is 1.05, which indicates the existence of a certain degree of carbon defects similar to previously reported carbon materials. 31,32 The value of I 2D /I G can be used to estimate the number of layers of graphitic carbon. The value of I 2D /I G is calculated to be 0.28, which indicates that the material has a multilayer graphitic carbon structure.…”

Section: Resultsmentioning

confidence: 99%

Highly Efficient and Stable Bifunctional Electrocatalyst with Alloy/Oxide Heterostructures for a Rechargeable Zinc–Air Battery

et al. 2022

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Constructing heterogeneous interfaces between transition metal alloys and oxides in a carbon-based composite catalyst is an effective strategy for boosting the oxygen evolution reaction and oxygen reduction reaction (OER and ORR). Inspired by this concept, a carbon-coated MnCoNi alloy/oxide catalyst (Ox-MnCoNi-C) was synthesized by carbonization of metal−organic frameworks (MOFs) and controllable reoxidation process. Owing to the synergetic interaction between abundant active sites on the heterogeneous interface and the good electron transfer rate of graphitic carbon, Ox-MnCoNi-C exhibits a low potential gap (ΔE) of 0.79 V. Meanwhile, the assembled liquid zinc−air batteries exhibit high power density (125 mW cm −2 ), superior primary discharge specific capacity (822 mAh g Zn −1), and no less than 100 h of steady charging and discharging operation running at 5 mA cm −2 . This approach will provide a generic template for the preparation and extension of MOF-derived carbon composite catalysts applied in oxygen electrocatalysis.

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Section: Resultsmentioning

confidence: 99%

Highly Efficient and Stable Bifunctional Electrocatalyst with Alloy/Oxide Heterostructures for a Rechargeable Zinc–Air Battery

et al. 2022

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“…It is definitely obvious that Fe-N-C or Co-N-C is inferior to Fe-Co-N-C-900 in OER (Figure S9), and simultaneously this result confirmed that suitable pyrolysis temperature and strong coupling between the doped binary Fe-Co particles mitigate electron transfer during OER and provide material with many active sites. 52 FeCo-ZIF shows a rich-edge nanosheet structure, which is conducive to providing additional active sites (Figure 3C). The cake-like structure provides an efficient approach to adsorb and desorb substances (eg, O 2 , *OOH, *O, and *OH) and betters OER through a more hopeful lens.…”

Section: Electrocatalytic Performance For Oermentioning

confidence: 99%

Sawtooth‐edged zeolitic imidazolate framework codoped with Fe and Co as a bifunctional oxygen electrocatalyst for rechargeable liquid/solid zinc‐air batteries

Zhang

Shi

et al. 2022

Intl J of Energy Research

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Summary Because of the practical applications for nonprecious‐alloy catalysts in industrial production, zinc‐air batteries (ZABs) must be urgently developed to design dual‐function electrocatalysts with excellent performance, low price, and facile production steps. This study proposed a newly developed iron, cobalt, and zinc coordination zeolite imidazole skeleton (FeCo‐ZIF), which does not require an additional carbon source and reduces environmental pollution. A flake fluffy structure was formed after pyrolysis enhanced metal particle dispersion. Compared with industrial Pt/C (0.837 V half‐wave potential) and RuO2 (overpotential), novel Fe‐Co‐N‐C‐900 improved oxygen reduction (0.859 V half‐wave potential), and oxygen precipitation (343 mV overvoltage at 10 mA cm−2) characteristics because the combination of Fe and Co favoured bifunctional properties. Liquid and solid ZABs are prepared using Fe‐Co‐N‐C‐900 as an air cathode. Experimental results showed that liquid ZABs present a higher peak power density (125 mW cm−2) and are steadier during cycling than traditional Pt/C + RuO2 catalysts. Liquid and flexible rechargeable ZABs attained the open‐circuit voltages of 1.460 and 1.476 V, respectively. This simple synthesis strategy can provide a novel approach to preparing dual‐function catalysts with energy storage and conversion applications.

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“…[12][13][14] Therefore, exploring an efficient and economical alternative to Pt has become a research hotspot. 15 In this regard, several efforts have been devoted to develop affordable Pt-free electrocatalysts with high activity, such as earth-abundant metal alloys, metal oxides, and carbon-based electrocatalysts. 16,17 Transition metal-nitrogen-carbon (TM-N-C, TM: iron, cobalt, nickel, copper, etc.)…”

Section: Introductionmentioning

confidence: 99%

Introducing mesoporous silica-protected calcination for improving the electrochemical performance of Cu@Fe–N–C composites in oxygen reduction reactions and supercapacitor applications

et al. 2022

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Large-scale defect-rich iron/nitrogen co-doped graphene-based materials as the excellent bifunctional electrocatalyst for liquid and flexible all-solid-state zinc-air batteries

Cited by 57 publications

References 65 publications

Highly Efficient and Stable Bifunctional Electrocatalyst with Alloy/Oxide Heterostructures for a Rechargeable Zinc–Air Battery

Highly Efficient and Stable Bifunctional Electrocatalyst with Alloy/Oxide Heterostructures for a Rechargeable Zinc–Air Battery

Sawtooth‐edged zeolitic imidazolate framework codoped with Fe and Co as a bifunctional oxygen electrocatalyst for rechargeable liquid/solid zinc‐air batteries

Introducing mesoporous silica-protected calcination for improving the electrochemical performance of Cu@Fe–N–C composites in oxygen reduction reactions and supercapacitor applications

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