Titanium Substitution Facilitating Oxygen and Manganese Redox in Sodium Layered Oxide Cathode

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Titanium Substitution Facilitating Oxygen and Manganese Redox in Sodium Layered Oxide Cathode

Popis výsledku v původním jazyce

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&apos;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

Název v anglickém jazyce

Titanium Substitution Facilitating Oxygen and Manganese Redox in Sodium Layered Oxide Cathode

Popis výsledku anglicky

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&apos;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

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

21000 - Nano-technology

Projekt

—

Návaznosti

O - Projekt operacniho programu

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Advanced Materials Interfaces

ISSN

2196-7350

e-ISSN

2196-7350

Svazek periodika

11

Číslo periodika v rámci svazku

22

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

—

Kód UT WoS článku

001198949600001

EID výsledku v databázi Scopus

2-s2.0-85189781964