Advertisement

Topics

Easily Decomposed Discharge Products Induced by Cathode Construction for High Energy Efficiency Lithium-Oxygen Batteries.

08:00 EDT 29th March 2019 | BioPortfolio

Summary of "Easily Decomposed Discharge Products Induced by Cathode Construction for High Energy Efficiency Lithium-Oxygen Batteries."

The lithium-oxygen (Li-O2) battery is deemed as a promising candidate for the next generation energy storage system due to its ultrahigh theoretical energy density. However, low energy efficiency and inferior cycle stability induced by the sluggish kinetics of charge transfer in discharge products limit its further development in practical application. In this work, tin dioxide (SnO2) nanoparticles decorated carbon nanotubes (SnO2/CNTs) have been constructed as composite cathodes to manipulate the morphology and component of discharge products in Li-O2 batteries. Owing to the strong oxygen adsorption of SnO2, oxygen reduction reactions tend to occur on composite cathode surfaces, resulting in formation of flake-like discharge products of Li2-xO2 below 10 nm in thickness rather than toroidal particles of several hundred nanometers. Such homogeneous nanosized discharge products with lithium vacancies markedly enhance the electrode kinetics and charge transfer in discharge products. Consequently, the Li-O2 batteries based on the SnO2/CNT cathodes show the small polarization voltage gap, which leads to the superior energy efficiency (80%) compared with that based on the pristine CNT cathodes. The results demonstrate that optimizing the discharge products with nanosized morphology and defective component by cathode construction is an effective strategy to realize the Li-O2 batteries with the increased energy efficiency and the improved cycle stability.

Affiliation

Journal Details

This article was published in the following journal.

Name: ACS applied materials & interfaces
ISSN: 1944-8252
Pages:

Links

DeepDyve research library

PubMed Articles [27642 Associated PubMed Articles listed on BioPortfolio]

All Carbon Dual Ion Batteries.

Dual ion batteries based on Na and PF received considerable attention due to their high operating voltage and the abundant Na resources. Here, cheap and easily-obtained graphite that served as a catho...

Polysulfide trapping in CNF cloth/S cathode with a bifunctional separator for high performance Li-S batteries.

The development of carbon nanofiber (CNF) cloth based cathode is essential to fabricate high energy density and flexible Li-S batteries. Surface modification is usually used to improve the electrochem...

High-Performance Cathode Material of FeF·0.33HO Modified with Carbon Nanotubes and Graphene for Lithium-Ion Batteries.

The FeF·0.33HO cathode material can exhibit a high capacity and high energy density through transfer of multiple electrons in the conversion reaction and has attracted great attention from researcher...

A Theoretical study on the charge and discharge states of Na-ion battery cathode material, Na FePO F.

Na FePO F is a promising cathode material for a Na-ion battery because of its high electronic capacity and good cycle performance. In this work, first principle calculations combined with cluster expa...

Uniform Distribution of Alloying/Dealloying Stress for High Structural Stability of an Al Anode in High-Areal-Density Lithium-Ion Batteries.

Aluminum (Al) is one of the most attractive anode materials for lithium-ion batteries (LIBs) due to its high theoretical specific capacity, excellent conductivity, abundance, and especially low cost. ...

Clinical Trials [8858 Associated Clinical Trials listed on BioPortfolio]

Surveillance of Fungal Infections During Construction Activity

Fungal infections in immunocompromised patients occuring during construction activities in hospitals have repeatedly been reported. However, the question of a causal relation between cons...

Smoking Cessation in Hispanic Construction Workers

Construction workers have the highest rate of smoking among all occupations, and are frequently exposed to a wide range of workplace hazards (e.g. toxins), which interact with smoking to i...

Efficacy of 128-channel EEG Combined With BESA Dipole Localization and Intervention on Brain Waves for Epilepsy

The prevalence of epilepsy is about 0.5% to 1% worldwide, with high disability and mortality rate. The 128-channel electroencephalograph (EEG), combined with BESA dipole localization metho...

Choice of Tube Extremity in Emission of Lowest Radiation Dose in Pediatric Patients

Compare the radiation in pediatric patients thyroid submitted to chest X-ray using the position of the anode and cathode.

A Study of a Smartphone-based Intervention for Suicidal Inpatients

Suicide is the most common form of deadly violence. Indeed, since more than 40,000 people die by suicide each year, people are 2.5 times more likely to die by their own hand than someone e...

Medical and Biotech [MESH] Definitions

A vacuum tube equipped with an electron emitting CATHODE and a fluorescent screen which emits visible light when excited by the cathode ray. Cathode ray tubes are used as imaging devises for TELEVISIONS; COMPUTER TERMINALS; TEXT TELECOMMUNICATION DEVICES; oscilloscopes; and other DATA DISPLAY devices.

Abnormally high temperature intentionally induced in living things regionally or whole body. It is most often induced by radiation (heat waves, infra-red), ultrasound, or drugs.

Monocyclic, bacterially produced or semisynthetic beta-lactam antibiotics. They lack the double ring construction of the traditional beta-lactam antibiotics and can be easily synthesized.

Subunits of the antigenic determinant that are most easily recognized by the immune system and thus most influence the specificity of the induced antibody.

Funding resources and procedures for capital improvement or the construction of facilities.

Advertisement
Quick Search
Advertisement
Advertisement

 


DeepDyve research library

Searches Linking to this Article