Electrochemical performance enhancement of MnO2 nanowires through silver incorporation for next-generation supercapacitors

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F24%3AA250383N" target="_blank" >RIV/61988987:17310/24:A250383N - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.rsc.org/en/content/articlelanding/2024/ma/d4ma00118d" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2024/ma/d4ma00118d</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d4ma00118d" target="_blank" >10.1039/d4ma00118d</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Electrochemical performance enhancement of MnO2 nanowires through silver incorporation for next-generation supercapacitors

Popis výsledku v původním jazyce

Increased demand for effective energy storage systems emphasizes the urgency to overcome the bottlenecks of existing technology. Supercapacitors (SCs), owing to their high specific power and fast charging/discharging capabilities, are perfect candidates for future energy applications but their low energy density makes them impractical for commercial applications. Because of their high energy density and variable oxidation states, transition metal oxides (TMOs) have great potential as supercapacitor electrode materials. But for practical applications, their poor intrinsic conductivity needs to be improved. Noble metal doping offers a compelling method to raise the conductivity and structural stability of TMOs. Herein, we have prepared AgxMnO2 (x = 0.05, 0.10, and 0.15) to improve the conductivity and structural stability of the electro-active material. FESEM micrographs exhibit cracks on the nanowire (NW) surface by Ag doping, proposing less dead volume. Ag doping also fortified electrode pulverization during charging/discharging cycles by imparting structural stability. These properties enabled Ag0.05MnO2 NWs to demonstrate a specific capacitance of 1027 F g(-1) at a current density of 1 A g(-1). The electrode also retained a capacitance of 93.16% after 10 000 GCD cycles@12 A g(-1) along with 86% rate capability at 9 A g(-1). By tackling critical difficulties such as poor conductivity and structural stability, this study advances energy storage technologies and lays the groundwork for the creation of high-performance supercapacitors for future energy applications.

Název v anglickém jazyce

Electrochemical performance enhancement of MnO2 nanowires through silver incorporation for next-generation supercapacitors

Popis výsledku anglicky

Increased demand for effective energy storage systems emphasizes the urgency to overcome the bottlenecks of existing technology. Supercapacitors (SCs), owing to their high specific power and fast charging/discharging capabilities, are perfect candidates for future energy applications but their low energy density makes them impractical for commercial applications. Because of their high energy density and variable oxidation states, transition metal oxides (TMOs) have great potential as supercapacitor electrode materials. But for practical applications, their poor intrinsic conductivity needs to be improved. Noble metal doping offers a compelling method to raise the conductivity and structural stability of TMOs. Herein, we have prepared AgxMnO2 (x = 0.05, 0.10, and 0.15) to improve the conductivity and structural stability of the electro-active material. FESEM micrographs exhibit cracks on the nanowire (NW) surface by Ag doping, proposing less dead volume. Ag doping also fortified electrode pulverization during charging/discharging cycles by imparting structural stability. These properties enabled Ag0.05MnO2 NWs to demonstrate a specific capacitance of 1027 F g(-1) at a current density of 1 A g(-1). The electrode also retained a capacitance of 93.16% after 10 000 GCD cycles@12 A g(-1) along with 86% rate capability at 9 A g(-1). By tackling critical difficulties such as poor conductivity and structural stability, this study advances energy storage technologies and lays the groundwork for the creation of high-performance supercapacitors for future energy applications.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10400 - Chemical sciences

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Materials Advances

ISSN

2633-5409

e-ISSN

2633-5409

Svazek periodika

—

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

15

Strana od-do

6170-6184

Kód UT WoS článku

001255366100001

EID výsledku v databázi Scopus

2-s2.0-85197248331