Edge-doping modulation of N, P-codoped porous carbon spheres for high-performance rechargeable Zn-air batteries

Chen, Si; Zhao, Lanling; Ma, Jizhen; Wang, Yueqing; Dai, Liming; Zhang, Jintao

doi:10.1016/j.nanoen.2019.03.084

Cited by 267 publications

(149 citation statements)

References 44 publications

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“…Dai and co‐workers presented a N/P codoped mesoporous carbon foam with high performance for ORR and OER reactions . It is worth noting that high‐temperature pyrolysis leads to the loss of heteroatoms in the carbon skeleton, thus resulting in topological defects, which improves the degree of graphitization and enhances the electrical conductivity of electrons . In addition to nitrogen and phosphorus codoping, Chen and co‐workers also showed that N/S codoped carbon materials with porosity structure is conducive to maintaining high conductivity and structural stability .…”

Section: Defective Electrode Materials For Rechargeable Batteriesmentioning

confidence: 99%

Defect Engineering on Electrode Materials for Rechargeable Batteries

et al. 2020

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The reasonable design of electrode materials for rechargeable batteries plays an important role in promoting the development of renewable energy technology. With the in‐depth understanding of the mechanisms underlying electrode reactions and the rapid development of advanced technology, the performance of batteries has significantly been optimized through the introduction of defect engineering on electrode materials. A large number of coordination unsaturated sites can be exposed by defect construction in electrode materials, which play a crucial role in electrochemical reactions. Herein, recent advances regarding defect engineering in electrode materials for rechargeable batteries are systematically summarized, with a special focus on the application of metal‐ion batteries, lithium–sulfur batteries, and metal–air batteries. The defects can not only effectively promote ion diffusion and charge transfer but also provide more storage/adsorption/active sites for guest ions and intermediate species, thus improving the performance of batteries. Moreover, the existing challenges and future development prospects are forecast, and the electrode materials are further optimized through defect engineering to promote the development of the battery industry.

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Section: Defective Electrode Materials For Rechargeable Batteriesmentioning

confidence: 99%

Defect Engineering on Electrode Materials for Rechargeable Batteries

et al. 2020

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“…Noble metal‐based materials (e.g., IrO 2 and RuO 2 ) show excellent catalytic activity and stability, but their low earth reserves and high prices hinder further development . For some time in the past, a great deal of effort has been devoted to the preparation of highly active and low‐cost catalysts, such as metal oxides/hydroxides, carbides, sulfides, and phosphides …”

Section: Introductionmentioning

confidence: 99%

Engineering Bimetal Synergistic Electrocatalysts Based on Metal–Organic Frameworks for Efficient Oxygen Evolution

Liu

Kong

Wang

et al. 2019

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Benefiting from metal–organic frameworks (MOFs) unique structural characteristics, their versatility in composition and structure has been well explored in electrochemical oxygen evolution reaction (OER) processes. Here, a ligand/ionic exchange phenomenon of MOFs is reported in alkaline solution due to their poor stability, and the active species and reaction mechanism of MOFs are revealed in the OER process. A series of mixed Ni‐MOFs and Fe‐MOFs are synthesized by straightforward sonication and then directly used as catalyst candidates for OER in alkaline electrolyte. It can be confirmed via ex situ transmission electron microscopic images and X‐ray diffraction patterns analysis, that the bimetallic hydroxide (NiFe‐LDH) is generated in 1.0 m KOH in situ and acts as protagonist for oxygen evolution. The optimized catalyst (FN‐2) exhibits a lower overpotential (275 mV at a current density of 10 mA cm−2) and excellent long‐term stability (strong current density for 100 h without fading). The revelation of the real active species of MOF materials may contribute to better understanding of the reaction mechanism.

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“…They are also attractive as a counter electrode in DSSCs and high‐performing electrode in Li‐ion batteries . Also of interest, edge N,P codoped carbon has been used as a cathode in Zn‐air batteries to show comparable ORR performance to Pt/C catalysts along with excellent OER electrocatalysis …”

Section: Ten Years’ Advancement Of C‐mfecsmentioning

confidence: 99%

“…37 Over the years, single heteroatom-doped, codoped, and even tridoped carbon electrocatalysts in various architectures were demonstrated to consistently show superior ORR performance to Pt/C in alkaline electrolyte, promising to replace the Pt electrode in commercial alkaline fuel cells. [1][2][3][4]38 Even though alkaline fuel cells with platinum as an ORR electrocatalyst were used 50 years ago for the Apollo-11 lunar mission by NASA in 1969 (http://americanhistory.si.edu/ fuelcells/alk/alk3.htm), nowadays most major motor companies work solely on acidic proton exchange membrane or polymer electrolyte membrane (PEM) fuel cells due to their high power density and the commercial availability of PEM. 39 The PEM is a semipermeable membrane made of ionomers and designed to conduct protons (H + ions) only while remaining impermeable to gases, such as oxygen and hydrogen.…”

Section: Ten Years' Advancement Of C-mfecsmentioning

confidence: 99%

Ten years of carbon‐based metal‐free electrocatalysts

et al. 2019

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Since the discovery of the first carbon-based metal-free electrocatalysts (C-MFECs, i.e., N-doped carbon nanotubes) for the oxygen reduction reaction in 2009, the field of C-MFECs has grown enormously over the last 10 years.C-MFECs, as alternatives to nonprecious transition metals and/or precious noble metal-based electrocatalysts, have been consistently demonstrated as efficient catalysts for oxygen reduction, oxygen evolution, hydrogen evolution, carbon dioxide reduction, nitrogen reduction, and many other (electro-) chemical reactions. Recent research and development of C-MFECs have indicated their potential applications in fuel cells, metal-air batteries, and hydrogen generation through water oxidation as well as electrochemical production of various commodity chemicals, such as ammonia, alcohols, hydrogen peroxide, and other useful hydrocarbons. Further research and development of C-MFECs would surely revolutionize traditional energy conversion and storage technologies with minimal environmental impact. In this short review article, we summarize the journey of C-MFECs over the past 10 years with an emphasis on materials development and their structure-property characterization for applications in fuel cells and metal-air batteries. Current challenges and future prospects of this emerging field are also discussed. K E Y W O R D Scarbon, electrocatalysis, energy conversion, energy storage, metal-free electrocatalyst

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Edge-doping modulation of N, P-codoped porous carbon spheres for high-performance rechargeable Zn-air batteries

Cited by 267 publications

References 44 publications

Defect Engineering on Electrode Materials for Rechargeable Batteries

Defect Engineering on Electrode Materials for Rechargeable Batteries

Engineering Bimetal Synergistic Electrocatalysts Based on Metal–Organic Frameworks for Efficient Oxygen Evolution

Ten years of carbon‐based metal‐free electrocatalysts

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