NDLI: Single crystalline pyrochlore nanoparticles with metallic conduction as efficient bi-functional oxygen electrocatalysts for Zn

Content Provider	Royal Society of Chemistry (RSC)
Author	Risch, Marcel Park, Suhyeon Kim, Min Gyu Shao-Horn, Yang Cho, Jaephil Park, Minjoon Park, Joohyuk Nam, Gyutae Shin, Tae Joo
Copyright Year	2017
Abstract	Oxygen reduction reaction (ORR) or oxygen evolution reaction (OER) electrocatalysts including carbon-, non-precious metal-, metal alloy-, metal oxide-, and carbide/nitride-based materials are of great importance for energy conversion and storage technologies. Among them, metal oxides (e.g., perovskite and pyrochlore) are known to be promising candidates as electrocatalysts. Nevertheless, the intrinsic catalytic activities of pyrochlore oxides are still poorly understood because of the formation of undesirable phases derived from the synthesis processes. Herein, we present highly pure single crystalline pyrochlore nanoparticles with metallic conduction (Pb2Ru2O6.5) as an efficient bi-functional oxygen electrocatalyst. Notably, it has been experimentally shown that the covalency of Ru–O bonds affects the ORR and OER activities by comparing the X-ray absorption near edge structure (XANES) spectra of the metallic Pb2Ru2O6.5 and insulating Sm2Ru2O7 for the first time. Moreover, we followed the interatomic distance changes of Ru–O bonds using in situ X-ray absorption spectroscopy (XAS) to investigate the structural stabilities of the pyrochlore catalysts during electrocatalysis. The highly efficient metallic Pb2Ru2O6.5 exhibited outstanding bi-functional catalytic activities and stabilities for both ORR and OER in aqueous Zn–air batteries.
Starting Page	129
Ending Page	136
Page Count	8
File Format	HTM / HTML PDF
ISSN	17545692
Volume Number	10
Issue Number	1
Journal	Energy & Environmental Science
DOI	10.1039/c6ee03046g
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	ORR Oxygen evolution Carbon Perovskite Pyrochlore Oxygen X-ray absorption spectroscopy X-ray absorption near edge structure Absorption spectroscopy
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Pollution Renewable Energy, Sustainability and the Environment Nuclear Energy and Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Nitrogen-doped cobalt phosphate@nanocarbon hybrids for efficient electrocatalytic oxygen reduction

Chemical interaction and imaging of single Co₃O₄/graphene sheets studied by scanning transmission X-ray microscopy and X-ray absorption spectroscopy

Influence of Li₂O₂ morphology on oxygen reduction and evolution kinetics in Li–O₂ batteries

Perovskite oxides La0.4Sr0.6CoxMn1-xO3 (x = 0, 0.2, 0.4) as an effective electrocatalyst for lithium—air batteries

LiFePO₄–graphene as a superior cathode material for rechargeable lithium batteries: impact of stacked graphene and unfolded graphene

Atomic scale enhancement of metal–support interactions between Pt and ZrC for highly stable electrocatalysts

Interpenetrating Triphase Cobalt-Based Nanocomposites as Efficient Bifunctional Oxygen Electrocatalysts for Long-Lasting Rechargeable Zn–Air Batteries

Electroless deposition and characterization of Fe/FeOx nanoparticles on porous carbon microspheres: structure and surface reactivity

Soft X-ray XANES studies of various phases related to LiFePO₄ based cathode materials

Single crystalline pyrochlore nanoparticles with metallic conduction as efficient bi-functional oxygen electrocatalysts for Zn–air batteries

Similar Documents

Nitrogen-doped cobalt phosphate@nanocarbon hybrids for efficient electrocatalytic oxygen reduction

Chemical interaction and imaging of single Co3O4/graphene sheets studied by scanning transmission X-ray microscopy and X-ray absorption spectroscopy

Influence of Li2O2 morphology on oxygen reduction and evolution kinetics in Li–O2 batteries

Perovskite oxides La0.4Sr0.6CoxMn1-xO3 (x = 0, 0.2, 0.4) as an effective electrocatalyst for lithium—air batteries

LiFePO4–graphene as a superior cathode material for rechargeable lithium batteries: impact of stacked graphene and unfolded graphene

Atomic scale enhancement of metal–support interactions between Pt and ZrC for highly stable electrocatalysts

Interpenetrating Triphase Cobalt-Based Nanocomposites as Efficient Bifunctional Oxygen Electrocatalysts for Long-Lasting Rechargeable Zn–Air Batteries

Electroless deposition and characterization of Fe/FeOx nanoparticles on porous carbon microspheres: structure and surface reactivity

Soft X-ray XANES studies of various phases related to LiFePO4 based cathode materials

Single crystalline pyrochlore nanoparticles with metallic conduction as efficient bi-functional oxygen electrocatalysts for Zn–air batteries

Chemical interaction and imaging of single Co₃O₄/graphene sheets studied by scanning transmission X-ray microscopy and X-ray absorption spectroscopy

Influence of Li₂O₂ morphology on oxygen reduction and evolution kinetics in Li–O₂ batteries

LiFePO₄–graphene as a superior cathode material for rechargeable lithium batteries: impact of stacked graphene and unfolded graphene

Soft X-ray XANES studies of various phases related to LiFePO₄ based cathode materials