Perovskite nanoparticles@N-doped carbon nanofibers as robust and efficient oxygen electrocatalysts for Zn-air batteries

Lin, Haoqing; Xie, Jian; Zhang, Zhenbao; Wang, Shaofeng; Chen, Dengjie

doi:10.1016/j.jcis.2020.07.116

Cited by 47 publications

(21 citation statements)

References 55 publications

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“…Among the five samples, the Tafel slope of SSCN82 is the lowest, which proves that it has faster OER reaction kinetics. SSCN82 generated a current density of 6.01 mA cm −2 at 1.8 V. For the sake of comparison, the results in our work and the values reported in literature [15,16,[36][37][38][39] are summarized in Table 1. The OER performance of SSCN82 is comparable to the perovskite catalysts.…”

Section: Resultsmentioning

confidence: 73%

Sm0.5Sr0.5Co1−xNixO3−δ—A Novel Bifunctional Electrocatalyst for Oxygen Reduction/Evolution Reactions

et al. 2022

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The development of non-precious metal catalysts with excellent bifunctional activities is significant for air–metal batteries. ABO3-type perovskite oxides can improve their catalytic activity and electronic conductivity by doping transition metal elements at B sites. Here, we develop a novel Sm0.5Sr0.5Co1−xNixO3−δ (SSCN) nanofiber-structured electrocatalyst. In 0.1 M KOH electrolyte solution, Sm0.5Sr0.5Co0.8Ni0.2O3−δ (SSCN82) with the optimal Co: Ni molar ratio exhibits good electrocatalytic activity for OER/ORR, affording a low onset potential of 1.39 V, a slight Tafel slope of 123.8 mV dec−1, and a current density of 6.01 mA cm−2 at 1.8 V, and the ORR reaction process was four-electron reaction pathway. Combining the morphological characteristic of SSCN nanofibers with the synergistic effect of cobalt and nickel with a suitable molar ratio is beneficial to improving the catalytic activity of SSCN perovskite oxides. SSCN82 exhibits good bi-functional catalytic performance and electrochemical double-layer capacitance.

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Section: Resultsmentioning

confidence: 73%

Sm0.5Sr0.5Co1−xNixO3−δ—A Novel Bifunctional Electrocatalyst for Oxygen Reduction/Evolution Reactions

et al. 2022

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“…During the uninterrupted operation within 410 h, the initial discharging–charging efficiency of ZAB was 60.2%, the discharging degradation rate reached 0.17 mV h −1 , and the charging degradation rate was 0.52 mV h −1 . Lin et al synthesized a hybrid catalyst containing LaCoO 3 nanoparticles and N‐doped carbon nanofibers (LCNP@NCNF) and investigated its electrochemical activity 15 . Thanks to the homogenous distribution of perovskite nanoparticles in the micro/mesoporous NCNF, good performance and stable operation stability of the composite catalyst were obtained.…”

Section: The Design Strategies Of Perovskite‐based Oxides For Zabsmentioning

confidence: 99%

“…(b) Crystal structure of ideal perovskite oxide. (c) Timetable of development of perovskite‐based catalysts used in Zn‐air batteries (ZABs) 6–20 …”

Section: Introductionmentioning

confidence: 99%

“…However, many perovskites will be distorted into other phase structures in reality, such as tetragonal structure, orthorhombic structure, or hexagonal structure. Here, the reason for these changes is not [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] fully complying with the above formula. Generally speaking, the tolerance factor t is applied to judge the deviation of perovskite from the ideal one.…”

Section: Introductionmentioning

confidence: 99%

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Nonnoble metal oxides for high‐performance Zn‐air batteries: Design strategies and future challenges

Zheng

Zhang

et al. 2022

Asia-Pacific J Chem Eng

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Nowadays, the increasing demand for safe, clean, and renewable energies has inspired scientists to do massive research on rechargeable Zn-air batteries (ZABs). Thanks to its inherent high theoretical energy density, ZABs have become one of the excellent candidates for the new generation of electric transportations and electrical energy storage systems. Nevertheless, the most significant technical obstacle to the commercialization of ZABs is the tardy oxygen reduction reaction and oxygen evolution reaction (ORR and OER) kinetics of the air electrode. Hence, the development of bifunctional electrocatalysts with advanced ORR/OER catalytic activity and long-term stability is of great significance. Owing to the outstanding advantages of perovskite oxides, scientists have focused their attention on the perovskite-based catalysts. And various strategies have been applied to strengthen their ORR/OER performance, including cation doping, surface structure optimization, nanostructure construction, and composite fabrication. This article concisely outlines the research progress of perovskite-based oxides on ZABs applications. The basic principles of ZABs and the approach to increasing the OER/ORR activity of perovskite oxides as the air electrode of ZABs are illustrated. Finally, this review points out opportunities, possibilities, and future development direction of perovskite-based air electrodes.

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“…[27][28][29] However, there is not a consistent understanding about the origin of the OER activity of the catalysts. Metals or alloys in the TM-N-C catalysts were considered to afford the OER active sites according to some research studies, 30,31 and the OER activities of metal carbides, 32,33 metal nitrides 34,35 and metal oxides [36][37][38][39] were also revealed in other investigations.…”

Section: Introductionmentioning

confidence: 99%

Positive regulation of active sites for oxygen evolution reactions by encapsulating NiFe₂O₄ nanoparticles in N-doped carbon nanotubes in situ to construct efficient bifunctional oxygen catalysts for rechargeable Zn–air batteries

Tang

Lei

et al. 2022

J. Mater. Chem. A

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Perovskite nanoparticles@N-doped carbon nanofibers as robust and efficient oxygen electrocatalysts for Zn-air batteries

Cited by 47 publications

References 55 publications

Sm0.5Sr0.5Co1−xNixO3−δ—A Novel Bifunctional Electrocatalyst for Oxygen Reduction/Evolution Reactions

Sm0.5Sr0.5Co1−xNixO3−δ—A Novel Bifunctional Electrocatalyst for Oxygen Reduction/Evolution Reactions

Nonnoble metal oxides for high‐performance Zn‐air batteries: Design strategies and future challenges

Positive regulation of active sites for oxygen evolution reactions by encapsulating NiFe₂O₄ nanoparticles in N-doped carbon nanotubes in situ to construct efficient bifunctional oxygen catalysts for rechargeable Zn–air batteries

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Perovskite nanoparticles@N-doped carbon nanofibers as robust and efficient oxygen electrocatalysts for Zn-air batteries

Cited by 47 publications

References 55 publications

Sm0.5Sr0.5Co1−xNixO3−δ—A Novel Bifunctional Electrocatalyst for Oxygen Reduction/Evolution Reactions

Sm0.5Sr0.5Co1−xNixO3−δ—A Novel Bifunctional Electrocatalyst for Oxygen Reduction/Evolution Reactions

Nonnoble metal oxides for high‐performance Zn‐air batteries: Design strategies and future challenges

Positive regulation of active sites for oxygen evolution reactions by encapsulating NiFe2O4 nanoparticles in N-doped carbon nanotubes in situ to construct efficient bifunctional oxygen catalysts for rechargeable Zn–air batteries

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Positive regulation of active sites for oxygen evolution reactions by encapsulating NiFe₂O₄ nanoparticles in N-doped carbon nanotubes in situ to construct efficient bifunctional oxygen catalysts for rechargeable Zn–air batteries