Electrospun porous nanorod perovskite oxide/nitrogen-doped graphene composite as a bi-functional catalyst for metal air batteries

Park, Hey Woong; Lee, Dong Un; Zamani, Pouyan; Seo, Min Ho; Nazar, Linda F.; Chen, Zhongwei

doi:10.1016/j.nanoen.2014.09.009

Cited by 170 publications

(106 citation statements)

References 33 publications

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“…Therefore, the improvement in the ORR activity is required for ensuring the bifunctionality of perovskite oxides by reducing the potential gap between ORR and OER. [99] For example, Shanmugam et al reported the synthesis of perovskite LaTi 0.65 Fe 0.35 O 3−δ nanoparticles entangled both at the surface and within the N doped carbon nanorods (NCNR) as a bifunctional ORR and OER catalyst with excellent performance. [100] Song et al further demonstrated the simply mixed, composite catalysts of perovskite oxide catalysts and polypyrrole (pPy).…”

Section: Metal Oxide/carbonmentioning

confidence: 99%

Design of Efficient Bifunctional Oxygen Reduction/Evolution Electrocatalyst: Recent Advances and Perspectives

Huang

Wang

Peng

et al. 2017

Advanced Energy Materials

672

448

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Oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are the two most important reactions in rechargeable metal‐air battery, a promising technology to meet the energy requirements for various applications. The development of low‐cost, highly efficient and stable bifunctional ORR/OER catalysts is critical for a large‐scale application of this technology. In this review, the authors first introduce the fundamentals of bifunctional ORR/OER electrocatalysis in alkaline electrolyte. Various types of nanostructured materials as bifunctional ORR/OER catalysts including metal oxide, hydroxide and sulfide, functional carbon material, metal, and their composites are then reviewed. The crucial factors that can be used to tune the activity of the catalyst towards ORR/OER are summarized, including (1) phase, morphology, crystal facet, defect, mixed‐metal and strain engineering for metal oxide; (2) heteroatom doping, topological defects, and formation of metal‐N‐C structure for carbon material; (3) alloy effect for metal. These experiences lay the foundation for large scale application of metal‐air battery and can also effectively guide the rational design of catalysts for other electrocatalytic reactions.

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Section: Metal Oxide/carbonmentioning

confidence: 99%

Design of Efficient Bifunctional Oxygen Reduction/Evolution Electrocatalyst: Recent Advances and Perspectives

Huang

Wang

Peng

et al. 2017

Advanced Energy Materials

672

448

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“…[8] The potential of such Pt-perovskite composite has recently been demonstrated by Ciucci and co-workers, who reported Pt 3 Ni/reduced Constructing highly active electrocatalysts with superior stability at low cost is a must, and vital for the large-scale application of rechargeable Zn-air batteries. [11] In alkaline environments, SrCoO 3−δ (SC)-derived perovskites have been widely reported for their outstanding OER activities. The optimal sample Pt-SCFP/C-12 exhibits outstanding bifunctional activity for the oxygen reduction reaction and oxygen evolution reaction with a potential difference of 0.73 V. Remarkably, the Zn-air battery based on this catalyst shows an initial discharge and charge potential of 1.25 and 2.02 V at 5 mA cm −2 , accompanied by an excellent cycling stability.…”

Section: Introductionmentioning

confidence: 99%

High‐Performance Platinum‐Perovskite Composite Bifunctional Oxygen Electrocatalyst for Rechargeable Zn–Air Battery

Wang

Sunarso

Lü

et al. 2019

Advanced Energy Materials

105

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Constructing highly active electrocatalysts with superior stability at low cost is a must, and vital for the large‐scale application of rechargeable Zn–air batteries. Herein, a series of bifunctional composites with excellent electrochemical activity and durability based on platinum with the perovskite Sr(Co0.8Fe0.2)0.95P0.05O3−δ (SCFP) are synthesized via a facile but effective strategy. The optimal sample Pt‐SCFP/C‐12 exhibits outstanding bifunctional activity for the oxygen reduction reaction and oxygen evolution reaction with a potential difference of 0.73 V. Remarkably, the Zn–air battery based on this catalyst shows an initial discharge and charge potential of 1.25 and 2.02 V at 5 mA cm−2, accompanied by an excellent cycling stability. X‐ray photoelectron spectroscopy, X‐ray absorption near‐edge structure, and extended X‐ray absorption fine structure experiments demonstrate that the superior performance is due to the strong electronic interaction between Pt and SCFP that arises as a result of the rapid electron transfer via the PtOCo bonds as well as the higher concentration of surface oxygen vacancies. Meanwhile, the spillover effect between Pt and SCFP also can increase more active sites via lowering energy barrier and change the rate‐determining step on the catalysts surface. Undoubtedly, this work provides an efficient approach for developing low‐cost and highly active catalysts for wider application of electrochemical energy devices.

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“…Recently, many research groups have investigated the synthesis of LaCoO 3 nanofibers via electrospinning for a variety of applications, such as photocatalysis, methane conversion, and thermoelectrics [15][16][17]. Recently, it was reported that porous nanorod perovskite La 0.5 Sr 0.5 Co 0.8-Fe 0.2 O 3 combined with N-doped reduced graphene oxide showed comparable performance to commercial Pt/C catalyst for ORR or OER by rotating disk electrode RDE analysis [18]. However, the electrochemical characterization of LaCoO 3 nanofibers as bifunctional catalysts of air electrode in Zn-air rechargeable batteries has not been reported yet.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of electrospun LaCoO3 fibers for oxygen reduction and evolution in rechargeable Zn–air batteries

et al. 2015

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LaCoO 3 fibers were synthesized through the calcination of an electrospun polymer-metal precursor fiber. The electrochemical performance of these fibers for oxygen reduction and evolution reactions was characterized in a KOH solution. Additionally, the electrochemical properties were compared with those of a conventional PtRu/C catalyst and a LaCoO 3 powder, which was synthesized using the Pechini method. The LaCoO 3 fibers had a greater surface area compared with the powder, whereas the crystal structures of the fibers and powder were notably similar. The LaCoO 3 fibers demonstrated better electrochemical properties compared with the LaCoO 3 powder, which was attributed to the increased surface area and number of active sites in the fibers.

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Electrospun porous nanorod perovskite oxide/nitrogen-doped graphene composite as a bi-functional catalyst for metal air batteries

Cited by 170 publications

References 33 publications

Design of Efficient Bifunctional Oxygen Reduction/Evolution Electrocatalyst: Recent Advances and Perspectives

Design of Efficient Bifunctional Oxygen Reduction/Evolution Electrocatalyst: Recent Advances and Perspectives

High‐Performance Platinum‐Perovskite Composite Bifunctional Oxygen Electrocatalyst for Rechargeable Zn–Air Battery

Preparation and characterization of electrospun LaCoO3 fibers for oxygen reduction and evolution in rechargeable Zn–air batteries

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