Heteroatom-doped graphene ‘Idli’: A green and foody approach towards development of metal free bifunctional catalyst for rechargeable zinc-air battery

Patra, Santanu; Choudhary, Raksha; Roy, Ekta; Madhuri, Rashmi; Sharma, Prashant K.

doi:10.1016/j.nanoen.2016.10.006

Cited by 53 publications

(35 citation statements)

References 45 publications

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“…Finally, the majority of the literature includes characterization of as‐obtained ORR electrocatalysts, solely based on half‐cell measurements (3‐electrode cell), while some reports have evaluated the performance in a full device such as an MFC or zinc–air batteries . More efforts are needed in the area of methanol or hydrogen fuel‐cell performance, as well as characterization of membrane electrode assembly (MEA), i.e., anode, cathode, and membrane, electrode structure, ionomer interaction, gas‐diffusion layers, and other interfering parameters .…”

Section: Summary and Perspectivementioning

confidence: 99%

Advanced Biomass‐Derived Electrocatalysts for the Oxygen Reduction Reaction

et al. 2017

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Recent progress in advanced nanostructures synthesized from biomass resources for the oxygen reduction reaction (ORR) is reviewed. The ORR plays a significant role in the performance of numerous energy-conversion devices, including low-temperature hydrogen and alcohol fuel cells, microbial fuel cells, as well as metal-air batteries. The viability of such fuel cells is strongly related to the cost of the electrodes, especially the cathodic ORR electrocatalyst. Hence, inexpensive and abundant plant and animal biomass have become attractive options to obtain electrocatalysts upon conversion into active carbon. Bioresource selection and processing criteria are discussed in light of their influence on the physicochemical properties of the ORR nanostructures. The resulting electrocatalytic activity and durability are introduced and compared to those from conventional Pt/C-based electrocatalysts. These ORR catalysts are also active for oxygen or hydrogen evolution reactions.

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Section: Summary and Perspectivementioning

confidence: 99%

Advanced Biomass‐Derived Electrocatalysts for the Oxygen Reduction Reaction

et al. 2017

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“…Carbon nanomaterials have been adapted as very promising catalysts with high activity and good stability, in addition, the catalytic properties of them could be further improved by the molecular and/or nanoarchitecture engineering under various novel strategies containing heteroatom doping (N, P, S, B, and so on), geometry optimization, and surface functionalization . Significantly, heteroatom doping can greatly boost the ORR activity leading to a favorable formation of OH − via the four‐electron pathway, in particular, various N‐doped carbon materials.…”

Section: Bifunctional Catalystsmentioning

confidence: 99%

Recent Advances toward the Rational Design of Efficient Bifunctional Air Electrodes for Rechargeable Zn–Air Batteries

Meng

Liu

Zhang

et al. 2018

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173

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Large-scale application of renewable energy and rapid development of electric vehicles have brought unprecedented demand for advanced energy-storage/conversion technologies and equipment. Rechargeable zinc (Zn)-air batteries represent one of the most promising candidates because of their high energy density, safety, environmental friendliness, and low cost. The air electrode plays a key role in managing the many complex physical and chemical processes occurring on it to achieve high performance of Zn-air batteries. Herein, recent advances of air electrodes from bifunctional catalysts to architectures are summarized, and their advantages and disadvantages are discussed to underline the importance of progress in the evolution of bifunctional air electrodes. Finally, some challenges and the direction of future research are provided for the optimized design of bifunctional air electrodes to achieve high performance of rechargeable Zn-air batteries.

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“…Besides nitrogen, other kinds of heteroatoms (e.g., sulfur, phosphorus, and boron) are also effective in enhancing the electrocatalytic activity of carbon nanomaterials . Moreover, the doping of two or more kinds of heteroatoms into carbon nanomaterials has also been verified as an efficient strategy to boost highly active electrocatalysts .…”

Section: Efficient Active Materials For Bifunctional Oxygen Electrocamentioning

confidence: 99%

A Review of Precious‐Metal‐Free Bifunctional Oxygen Electrocatalysts: Rational Design and Applications in Zn−Air Batteries

Wang

Tang

Zhang

2018

Adv Funct Materials

588

327

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The bifunctional electrocatalysis of oxygen reduction reactions (ORRs) and oxygen evolution reactions (OERs) is critical for the development of rechargeable Zn-air batteries. Both ORRs and OERs suffer from sluggish kinetics and high overpotentials, and the bifunctional reactivity is limited by the scaling relationship. Therefore, smart designs on electrocatalysts are requested to achieve high bifunctional ORR/OER activity and excellent performance in Zn-air batteries. Herein, the requirements for bifunctional oxygen electrocatalysts are first introduced. Then the recent advances of precious-metal-free active materials and regulation methods of their intrinsic activity are introduced. The structural design principles to improve the accessibility of the active sites are further presented. Finally, a brief overview of the applications of bifunctional oxygen electrocatalysts in Zn-air batteries, including routine liquid batteries and flexible solid-state batteries, is presented. This review affords rational design principles and strategies for nonprecious bifunctional ORR/OER electrocatalysts, which are expected to guide the targeted optimization of electrocatalysts and further exploration of emerging candidates.The electrochemical tests of ORR and ORR are usually performed in a three-electrode system. O 2 -saturated 0.10 or 1.0 m KOH Adv. Funct. Mater. 2018, 28, 1803329 Figure 2. Schematic illustration of how the scaling relationship affect the ORR and OER volcano plots. All panels reproduced with permission. [35]

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Heteroatom-doped graphene ‘Idli’: A green and foody approach towards development of metal free bifunctional catalyst for rechargeable zinc-air battery

Cited by 53 publications

References 45 publications

Advanced Biomass‐Derived Electrocatalysts for the Oxygen Reduction Reaction

Advanced Biomass‐Derived Electrocatalysts for the Oxygen Reduction Reaction

Recent Advances toward the Rational Design of Efficient Bifunctional Air Electrodes for Rechargeable Zn–Air Batteries

A Review of Precious‐Metal‐Free Bifunctional Oxygen Electrocatalysts: Rational Design and Applications in Zn−Air Batteries

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