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Title: Toward Highly Efficient Electrocatalyst for Li–O 2 Batteries Using Biphasic N-Doping Cobalt@Graphene Multiple-Capsule Heterostructures

Journal Article · · Nano Letters

For the promotion of lithium oxygen batteries available for :practical applications, the development of advanced cathode catalysts with low-high activity, and stable structural properties is demanded. Such development is rooted on certain intelligent catalyst-electrode design that fundamentally facilitates electronic and ionic transport and improves oxygen diffusivity in a porous environment. Here we design a biphasic nitrogen-doped cobalt@grapbene Multiple-capsule heterostructure, combined with a flexible, stable porous electrode architecture, and apply it as promising cathodes for lithium oxygen cells. 'The biphasic nitrogen-doping feature improves the electric conductivity and catalytic activity; the multiple-nanocapsule configuration makes high/uniform electroactive zones possible; furthermore the colander-like porous electrode facilitates the oxygen diffusion, catalytic reaction,and stable deposition of discharge products. As a result, the electrode exhibits much improved electrocatalytic properties associated with unique morphologies of electrochemically grown lithium peroxides.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
DOE Contract Number:
AC02-06CH11357
OSTI ID:
1390804
Journal Information:
Nano Letters, Vol. 17, Issue 5; ISSN 1530-6984
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English

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Cited By (15)

Functionalization of 2D materials for enhancing OER/ORR catalytic activity in Li–oxygen batteries journal August 2019
Co3O4 nanocage derived from metal-organic frameworks: An excellent cathode catalyst for rechargeable Li-O2 battery journal April 2019
One‐Step Route Synthesized Co 2 P/Ru/N‐Doped Carbon Nanotube Hybrids as Bifunctional Electrocatalysts for High‐Performance Li–O 2 Batteries journal May 2019
ZIF-8/ZIF-67-Derived Co-N x -Embedded 1D Porous Carbon Nanofibers with Graphitic Carbon-Encased Co Nanoparticles as an Efficient Bifunctional Electrocatalyst journal May 2018
Atomic‐Layer‐Deposited Amorphous MoS 2 for Durable and Flexible Li–O 2 Batteries journal May 2019
Metal–organic framework derived Co–N-reduced graphene oxide as electrode materials for rechargeable Li–O 2 batteries journal January 2019
Interfacial Super‐Assembled Porous CeO 2 /C Frameworks Featuring Efficient and Sensitive Decomposing Li 2 O 2 for Smart Li–O 2 Batteries journal September 2019
Insights into Structural Evolution of Lithium Peroxides with Reduced Charge Overpotential in Li−O 2 System journal June 2019
Principle understanding towards synthesizing Fe/N decorated carbon catalysts with pyridinic-N enriched and agglomeration-free features for lithium–oxygen batteries journal January 2020
Free-standing N,Co-codoped TiO 2 nanoparticles for LiO 2 -based Li–O 2 batteries journal January 2019
Strategies toward High-Performance Cathode Materials for Lithium-Oxygen Batteries journal May 2018
Research Progress for the Development of Li-Air Batteries: Addressing Parasitic Reactions Arising from Air Composition journal June 2018
Combinational Design of Electronic Structure and Nanoarray Architecture Achieves a Low‐Overpotential Oxygen Electrode for Aprotic Lithium–Oxygen Batteries journal December 2019
Pyridinic-N-dominated carbon frameworks with porous tungsten trioxide nano-lamellae as a promising bi-functional catalyst for Li–oxygen batteries journal January 2018
Functional and stability orientation synthesis of materials and structures in aprotic Li–O 2 batteries journal January 2018