Phase transformation of alpha-MnO2 to beta-MnO2 induced by Cu doping: Improved electrochemical performance for next generation supercapacitor

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F23%3AA2402LEE" target="_blank" >RIV/61988987:17310/23:A2402LEE - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0921510723003227?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0921510723003227?via%3Dihub</a>

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

Phase transformation of alpha-MnO2 to beta-MnO2 induced by Cu doping: Improved electrochemical performance for next generation supercapacitor

Original language description

With the advent of wearable/portable electronics and hybrid electric vehicles, supercapacitors have gained much interest owing to their high-power density. This work deals with ultralong MnO2 nanowires reinforced with different Cu contents as a new electrode material for supercapacitors fabrication. X-ray diffraction (XRD) results showed the MnO2 phase transformation from alpha-MnO2 to beta- MnO2 induced by Cu doping. beta-MnO2 due to its highest structural stability is expected to show the excellent cyclic stability of the electrode material. Field emission scanning electron microscopy (FESEM) confirmed the ultralong nanowires morphology. Ultralong nanowires with extremely interconnected network enable efficient electron transport between them, further enhancing the electrical conductivity of the material. Redox peaks present in the CV profile revealed that the preferred charge storage follows faradic mechanism, which was further confirmed by rate law. Nanosized morphology and spongy structure of the current collector exposed the maximal electrode area in conjunction with shielding from electrode pulverization.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10400 - Chemical sciences

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

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

Name of the periodical

MAT SCI ENG B-SOLID

ISSN

0921-5107

e-ISSN

—

Volume of the periodical

—

Issue of the periodical within the volume

116580

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

10

Pages from-to

1-10

UT code for WoS article

001010005300001

EID of the result in the Scopus database

—