Laser-Processed 2D Germanane on Graphene for Organohydrogel-Based Zinc-Ion Hybrid Capacitors

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F26%3A0201801" target="_blank" >RIV/00216305:26620/26:0201801 - isvavai.cz</a>

Výsledek na webu

<a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC13001108/" target="_blank" >https://pmc.ncbi.nlm.nih.gov/articles/PMC13001108/</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acsnano.5c13803" target="_blank" >10.1021/acsnano.5c13803</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Laser-Processed 2D Germanane on Graphene for Organohydrogel-Based Zinc-Ion Hybrid Capacitors

Popis výsledku v původním jazyce

Group 14 monoelemental two-dimensional (2D) materials beyond graphene, such as silicene and germanene, have gained significant attention in the scientific community. Covalent functionalization of germanene with hydrogen and methyl leads to germanane (hydrogen/methyl-terminated germanene; HGe/MGe). While the optical and electronic properties of HGe and MGe were explored previously, there is no report on their zinc ion storage electrochemistry. Though the layered HGe/MGe sheets have tunable interlayer spacing, which cushions the volume expansion during ion storage, their inferior electrical conductivity limits the charge transfer kinetics. Herein, we demonstrate a single-step, facile approach for in situ decoration of 2D HGe/MGe sheets over laser-induced graphene (LIG) using a pulsed laser and examine their morphological, chemical, and electrochemical (EC) characteristics. The HGe/MGe-decorated LIG is tested as a cathode for a zinc ion hybrid capacitor (ZHC) in an aqueous electrolyte and polyacrylamide organohydrogel to unveil the selective sites for zinc ion electrochemistry by experimental and theoretical aspects. This ZHC design enables a notable Zn2+ storage capacity (104 F g-1 @ 0.25 A g-1 in aqueous electrolyte) for HGe-decorated LIG, whereas MGe-decorated LIG records impressive cyclic stability (capacity retention 83% after 12000 cycles). Density functional theory calculations elucidate favorable adsorption of Zn at MGe and HGe networks. These findings summarize the applicability of 2D functionalized germanane, which has the potential to expand by numerous alkyl chains and terminal groups for targeted energy storage applications.

Název v anglickém jazyce

Laser-Processed 2D Germanane on Graphene for Organohydrogel-Based Zinc-Ion Hybrid Capacitors

Popis výsledku anglicky

Group 14 monoelemental two-dimensional (2D) materials beyond graphene, such as silicene and germanene, have gained significant attention in the scientific community. Covalent functionalization of germanene with hydrogen and methyl leads to germanane (hydrogen/methyl-terminated germanene; HGe/MGe). While the optical and electronic properties of HGe and MGe were explored previously, there is no report on their zinc ion storage electrochemistry. Though the layered HGe/MGe sheets have tunable interlayer spacing, which cushions the volume expansion during ion storage, their inferior electrical conductivity limits the charge transfer kinetics. Herein, we demonstrate a single-step, facile approach for in situ decoration of 2D HGe/MGe sheets over laser-induced graphene (LIG) using a pulsed laser and examine their morphological, chemical, and electrochemical (EC) characteristics. The HGe/MGe-decorated LIG is tested as a cathode for a zinc ion hybrid capacitor (ZHC) in an aqueous electrolyte and polyacrylamide organohydrogel to unveil the selective sites for zinc ion electrochemistry by experimental and theoretical aspects. This ZHC design enables a notable Zn2+ storage capacity (104 F g-1 @ 0.25 A g-1 in aqueous electrolyte) for HGe-decorated LIG, whereas MGe-decorated LIG records impressive cyclic stability (capacity retention 83% after 12000 cycles). Density functional theory calculations elucidate favorable adsorption of Zn at MGe and HGe networks. These findings summarize the applicability of 2D functionalized germanane, which has the potential to expand by numerous alkyl chains and terminal groups for targeted energy storage applications.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

21000 - Nano-technology

Projekt

<a href="/cs/project/GX25-15484X" target="_blank" >GX25-15484X: Inteligentní mikro- a nanoroboti pro čištění vody</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2026

Kód důvěrnosti údajů

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

Název periodika

ACS Nano

ISSN

1936-0851

e-ISSN

1936-086X

Svazek periodika

20

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

14

Strana od-do

8275-8288

Kód UT WoS článku

001703352000001

EID výsledku v databázi Scopus

2-s2.0-105033042537