Graphene Acid for Lithium-Ion Batteries-Carboxylation Boosts Storage Capacity in Graphene

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F22%3A10248946" target="_blank" >RIV/61989100:27640/22:10248946 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989592:15310/21:73610454 RIV/61989592:15640/21:73610454 RIV/61989100:27740/22:10248946

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/epdf/10.1002/aenm.202103010" target="_blank" >https://onlinelibrary.wiley.com/doi/epdf/10.1002/aenm.202103010</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/aenm.202103010" target="_blank" >10.1002/aenm.202103010</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Graphene Acid for Lithium-Ion Batteries-Carboxylation Boosts Storage Capacity in Graphene

Popis výsledku v původním jazyce

Environmentally sustainable, low-cost, flexible, and lightweight energy storage technologies require advancement in materials design in order to obtain more efficient organic metal-ion batteries. Synthetically tailored organic molecules, which react reversibly with lithium, may address the need for cost-effective and eco-friendly anodes used for organic/lithium battery technologies. Among them, carboxylic group-bearing molecules act as high-energy content anodes. Although organic molecules offer rich chemistry, allowing a high content of carboxyl groups to be installed on aromatic rings, they suffer from low conductivity and leakage to the electrolytes, which restricts their actual capacity, the charging/discharging rate, and eventually their application potential. Here, a densely carboxylated but conducting graphene derivative (graphene acid (GA)) is designed to circumvent these critical limitations, enabling effective operation without compromising the mechanical or chemical stability of the electrode. Experiments including operando Raman measurements and theoretical calculations reveal the excellent charge transport, redox activity, and lithium intercalation properties of the GA anode at the single-layer level, outperforming all reported organic anodes, including commercial monolayer graphene and graphene nanoplatelets. The practical capacity and rate capability of 800 mAh g(-1) at 0.05 A g(-1) and 174 mAh g(-1) at 2.0 A g(-1) demonstrate the true potential of GA anodes in advanced lithium-ion batteries.

Název v anglickém jazyce

Graphene Acid for Lithium-Ion Batteries-Carboxylation Boosts Storage Capacity in Graphene

Popis výsledku anglicky

Environmentally sustainable, low-cost, flexible, and lightweight energy storage technologies require advancement in materials design in order to obtain more efficient organic metal-ion batteries. Synthetically tailored organic molecules, which react reversibly with lithium, may address the need for cost-effective and eco-friendly anodes used for organic/lithium battery technologies. Among them, carboxylic group-bearing molecules act as high-energy content anodes. Although organic molecules offer rich chemistry, allowing a high content of carboxyl groups to be installed on aromatic rings, they suffer from low conductivity and leakage to the electrolytes, which restricts their actual capacity, the charging/discharging rate, and eventually their application potential. Here, a densely carboxylated but conducting graphene derivative (graphene acid (GA)) is designed to circumvent these critical limitations, enabling effective operation without compromising the mechanical or chemical stability of the electrode. Experiments including operando Raman measurements and theoretical calculations reveal the excellent charge transport, redox activity, and lithium intercalation properties of the GA anode at the single-layer level, outperforming all reported organic anodes, including commercial monolayer graphene and graphene nanoplatelets. The practical capacity and rate capability of 800 mAh g(-1) at 0.05 A g(-1) and 174 mAh g(-1) at 2.0 A g(-1) demonstrate the true potential of GA anodes in advanced lithium-ion batteries.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

21100 - Other engineering and technologies

Projekt

<a href="/cs/project/GX19-27454X" target="_blank" >GX19-27454X: Ovlivnění elektronických vlastností organometalických molekul pomocí jejich nekovalentních interakcí s rozpouštědly, ligandy a 2D nanosystémy</a><br>

Návaznosti

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

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Advanced Energy Materials

ISSN

1614-6832

e-ISSN

1614-6840

Svazek periodika

12

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

11

Strana od-do

nestrankovano

Kód UT WoS článku

000732712200001

EID výsledku v databázi Scopus

2-s2.0-85121572048