Titanium Substitution Facilitating Oxygen and Manganese Redox in Sodium Layered Oxide Cathode
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F24%3A10254909" target="_blank" >RIV/61989100:27710/24:10254909 - isvavai.cz</a>
Result on the web
<a href="https://www.scopus.com/record/display.uri?eid=2-s2.0-85189781964&origin=resultslist&sort=plf-f&src=s&sid=a4ead8b470657d3c7a3896a0b36dbb74&sot=b&sdt=b&s=TITLE%28Titanium+Substitution+Facilitating+Oxygen+and+Manganese+Redox+in+Sodium+Layered+Oxide+Cathode%29&sl=100&sessionSearchId=a4ead8b470657d3c7a3896a0b36dbb74&relpos=0" target="_blank" >https://www.scopus.com/record/display.uri?eid=2-s2.0-85189781964&origin=resultslist&sort=plf-f&src=s&sid=a4ead8b470657d3c7a3896a0b36dbb74&sot=b&sdt=b&s=TITLE%28Titanium+Substitution+Facilitating+Oxygen+and+Manganese+Redox+in+Sodium+Layered+Oxide+Cathode%29&sl=100&sessionSearchId=a4ead8b470657d3c7a3896a0b36dbb74&relpos=0</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/admi.202400190" target="_blank" >10.1002/admi.202400190</a>
Alternative languages
Result language
angličtina
Original language name
Titanium Substitution Facilitating Oxygen and Manganese Redox in Sodium Layered Oxide Cathode
Original language description
Sodium layered oxide with anion redox activity (SLO-A) stands out as a promising cathode material for sodium-ion batteries due to its impressive capacity and high voltage resulting from Mn- and O-redox processes. However, the SLO-A faces significant challenges in cycling stability and rate performance, primarily due to the poor reversibility and sluggish kinetics of the O-redox. In this study,a novel Ti-doped material, Na2/3Li2/9Mn53/72Ti1/24O2 (NLMTO), exhibiting remarkable characteristics such as a notable rate capacity (130 mAh g-1 at 3C, where 1C equals 200 mA g-1) and excellent cycling retention (85.4% after 100 cycles at 0.5C) is introduced. Employing electrochemical differential analyses, the contributions to the superior performance arising from the Mn- and O-redox processes are quantitatively delineated. The optimized performance of NLMTO is attributed, in part, to the enhanced stability of both bulk and interface structures. The introduction of Ti through substitution not only contributes to this stability but also allows for the fine-tuning of the material's electron configurations. This is achieved by augmenting the density of states near the Fermi energy level, as well as elevating the O 2p and Mn 3d orbits. This research advances sodium-ion battery technology. This study introduces a groundbreaking Ti-doped cathode material with anion redox activity, namely Na2/3Li2/9Mn53/72Ti1/24O2, designed for application in sodium-ion batteries. Notably, this material exhibits outstanding cycling stability, retaining 85.4% of its capacity after 100 cycles at 0.5C, where 1C corresponds to 200 mA g-1. Through quantitative analysis, the optimized performance of this cathode material stems from the enhanced O 2p and Mn 3d orbits, highlighting the contributions from both Mn- and O-redox processes is ascertained. image
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
21000 - Nano-technology
Result continuities
Project
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Continuities
O - Projekt operacniho programu
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Advanced Materials Interfaces
ISSN
2196-7350
e-ISSN
2196-7350
Volume of the periodical
11
Issue of the periodical within the volume
22
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
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UT code for WoS article
001198949600001
EID of the result in the Scopus database
2-s2.0-85189781964