Silicon decorated graphene nanoplates modified anode and MnO2 interlayer as a multifunctional polysulfides barrier for advanced pre-lithiation silicon-sulfur batteries

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F25%3A00383281" target="_blank" >RIV/68407700:21220/25:00383281 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.jpcs.2025.112812" target="_blank" >https://doi.org/10.1016/j.jpcs.2025.112812</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jpcs.2025.112812" target="_blank" >10.1016/j.jpcs.2025.112812</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Silicon decorated graphene nanoplates modified anode and MnO2 interlayer as a multifunctional polysulfides barrier for advanced pre-lithiation silicon-sulfur batteries

Popis výsledku v původním jazyce

The development of advanced anodes with high capacity and excellent high-rate cycling performance for next generation of sulfur- based batteries has emerged as a significant area of research. In this study, we present a straightforward approach to design and fabricate silicon/graphene nanoplates using a one-step hydrothermal method. Notably, a pomegranate-like structure is achieved in the silicon/graphene nanoplates (Si/GNP) spheres, with distinctive porous pomegranate architecture not only enhances the electrical conductivity of the active silicon but also accommodates substantial volume changes during cycling. Additionally, to enhance redox reactions and hinder shuttle effect, GNP/MnO2 composites is investigated as an interlayer. The MnO2 particles are in-situ grown on the surface of the GNP. The metal oxide MnO2 can enhance chemical adsorption during the electrochemical cycles. As a result, the cell with GNP/MnO2interlayer and Si/GNP anode spheres exhibit remarkable cycling stability, delivering capacity retention of 986 mAh g-1 after 300 cycles, indicating a commendable cycling performance. The cell performance was investigated across different current densities. Notably, substantial discharge capacities of 831 and 719 mAh g-1 were attained even at 2C and 5C current densities. The synthetic approach we have developed presents an innovative route for high-performance practical anodes and interlayers intended for electrochemical energy storage applications.

Název v anglickém jazyce

Silicon decorated graphene nanoplates modified anode and MnO2 interlayer as a multifunctional polysulfides barrier for advanced pre-lithiation silicon-sulfur batteries

Popis výsledku anglicky

The development of advanced anodes with high capacity and excellent high-rate cycling performance for next generation of sulfur- based batteries has emerged as a significant area of research. In this study, we present a straightforward approach to design and fabricate silicon/graphene nanoplates using a one-step hydrothermal method. Notably, a pomegranate-like structure is achieved in the silicon/graphene nanoplates (Si/GNP) spheres, with distinctive porous pomegranate architecture not only enhances the electrical conductivity of the active silicon but also accommodates substantial volume changes during cycling. Additionally, to enhance redox reactions and hinder shuttle effect, GNP/MnO2 composites is investigated as an interlayer. The MnO2 particles are in-situ grown on the surface of the GNP. The metal oxide MnO2 can enhance chemical adsorption during the electrochemical cycles. As a result, the cell with GNP/MnO2interlayer and Si/GNP anode spheres exhibit remarkable cycling stability, delivering capacity retention of 986 mAh g-1 after 300 cycles, indicating a commendable cycling performance. The cell performance was investigated across different current densities. Notably, substantial discharge capacities of 831 and 719 mAh g-1 were attained even at 2C and 5C current densities. The synthetic approach we have developed presents an innovative route for high-performance practical anodes and interlayers intended for electrochemical energy storage applications.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS

ISSN

0022-3697

e-ISSN

1879-2553

Svazek periodika

205

Číslo periodika v rámci svazku

04

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

—

Kód UT WoS článku

001484691200001

EID výsledku v databázi Scopus

2-s2.0-105003595055