Related Experiment Video
Updated: May 3, 2026
10:03
Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
Published on: November 11, 2013
25.6K
Boosting the Structural Stability of High-Voltage Sodium Layered Cathodes via Site-Selective La/Ti Co-Doping
Sreelakshmy Thekkekara1, Pragyan Tripathi2, Jahnavi M Sudharma1
1Indian Institute of Science, Education, and Research, Thiruvananthapuram Maruthamala PO, Thiruvananthapuram, Kerala, 695551, India.
Small (Weinheim an Der Bergstrasse, Germany)
|May 28, 2025
Summary
La/Ti co-doping enhances P2-type sodium layered oxide cathodes for sodium-ion batteries. This strategy improves structural stability and electrochemical performance, paving the way for advanced battery energy density.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- P2-type sodium layered oxides (NNMO) are promising for sodium-ion batteries (SIBs) due to their structure and redox properties.
- Structural instability and capacity fading limit their practical application.
Purpose of the Study:
- To improve the structural stability and electrochemical performance of P2-type Na2/3Ni1/3Mn2/3O2 (NNMO) using La/Ti co-doping.
- To investigate the mechanisms behind the performance enhancement.
Main Methods:
- Synthesis and electrochemical characterization of La/Ti co-doped NNMO (LT-NNMO-0.01).
- In situ X-ray diffraction (XRD) studies.
- Density functional theory (DFT) calculations.
Main Results:
- LT-NNMO-0.01 exhibits enhanced structural stability and improved cycling performance.
- Co-doping facilitates reversible oxygen redox reactions by strengthening TM-O bonds and suppressing oxygen migration.
- Minimized volume changes during cycling contribute to reversible structural evolution.
Conclusions:
- La/Ti co-doping is an effective strategy to overcome the limitations of P2-type layered oxide cathodes.
- This approach enhances the potential of SIBs for high-energy-density applications.
- The study offers a pathway for designing advanced cathode materials for SIBs.
Related Concept Videos
01:35Long-term Potentiation
51.6K
Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre- and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
51.6K
01:25Long-term Potentiation
2.7K
Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
Hebbian LTP
LTP can occur when...
Hebbian LTP
LTP can occur when...
2.7K
01:19Ligand-gated Ion Channels
11.4K
Ligand-gated ion channels are transmembrane proteins with a channel for ions to pass through and a binding site for a ligand. The channel opens only when a ligand attaches to the binding site.
Three Subfamilies of Ligand-gated Ion Channels
Ligand-gated ion channels fall into three subfamilies. The 'Cys-loop' includes the nicotinic acetylcholine receptors, γ-aminobutyric acid (GABA), glycine, and 5-hydroxytryptamine receptors. The second one is the 'Pore-loop' channels that...
Three Subfamilies of Ligand-gated Ion Channels
Ligand-gated ion channels fall into three subfamilies. The 'Cys-loop' includes the nicotinic acetylcholine receptors, γ-aminobutyric acid (GABA), glycine, and 5-hydroxytryptamine receptors. The second one is the 'Pore-loop' channels that...
11.4K
01:30Ligand-Gated Ion Channel Receptor: Gating Mechanism
4.6K
Ligand-gated ion channels are transmembrane proteins that play a vital role in intercellular communication and functions of the nervous system. They allow the influx of ions across the membrane once the neurotransmitter binds, allowing the subsequent transmission of electrical excitation across the neurons. Other ligand-gated ion channels, like the γ-aminobutyric acid (GABA) receptor, permit anions like chloride into the cells on the binding of the GABA molecule. Their entry into the cell...
4.6K
01:30Local Anesthetics: Chemistry and Structure-Activity Relationship
4.9K
Local anesthetics (LAs) are drugs that induce a temporary loss of sensation in a limited body area, preventing pain. Cocaine was the first local anesthetic discovered in the late 19th century. Cocaine is a benzoic acid ester obtained from the leaves of coca shrubs and was often used for its psychotropic effects. Cocaine was first isolated in 1860 by Albert Niemann. Sigmund Freud studied the physiological actions of cocaine. Carl Koller later introduced it into clinical practice in 1884 as a...
4.9K
01:23Local Anesthetics: Mechanism of Action
4.4K
Local anesthetics (LAs) block sensory and motor impulses by inhibiting the sodium channels on the nerve cell membranes. This induces temporary loss of sensation, relieving pain in a specific body area.
Local anesthetics are amphiphilic molecules consisting of a hydrophobic aromatic part linked to a hydrophilic group by an ester or amide linkage. They are weak bases and are usually available as salts, which increases their solubility and stability. Once administered, LAs exist in the body either...
Local anesthetics are amphiphilic molecules consisting of a hydrophobic aromatic part linked to a hydrophilic group by an ester or amide linkage. They are weak bases and are usually available as salts, which increases their solubility and stability. Once administered, LAs exist in the body either...
4.4K