Salt particle suspension electrolyte with trace-water for improving ionic concentrations at interfaces in zinc-based dual-ion batteries

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00627747" target="_blank" >RIV/68378271:_____/25:00627747 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0366555" target="_blank" >https://hdl.handle.net/11104/0366555</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/D5TA00256G" target="_blank" >10.1039/D5TA00256G</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Salt particle suspension electrolyte with trace-water for improving ionic concentrations at interfaces in zinc-based dual-ion batteries

Popis výsledku v původním jazyce

Dual-ion batteries (DIBs) have garnered significant interest due to their cost-effectiveness, high operating voltage, and eco-friendly nature. The electrolyte, serving as the provider of active ions during the charge/discharge cycles, is pivotal to the performance metrics of DIBs, such as capacity, energy density, and lifespan. Despite this, the high-concentration electrolytes that rely heavily on main salts often compromise the cost-effectiveness of DIBs. Therefore, a salt particle suspension electrolyte (SPSE) system has been successfully developed based on a linear carbonate solvent with a trace amount of water and applied in graphite‖zinc and graphite‖graphite DIBs. This innovative SPSE offers a high surface anion concentration that reduces concentration polarization, improves anion utilization efficiency at the electrode surface, and ensures a sufficient anion supply even at relatively low electrolyte concentrations. The prototype DIB, based on a zinc metal-free anode concept utilizing a graphite anode, an expanded graphite cathode, and a SPSE with a zinc trifluoromethylsulfonate [Zn(OTf)2] salt has demonstrated a remarkable discharge capacity of 178.66 mA h g−1 at a current rate of 10 mA g−1, and an impressive 84.7% capacity retention after 240 cycles at 100 mA g−1. The energy density of the battery with respect to the cathode mass soared to 304.8 W h kg−1. Our results provide novel insight into the rational design and construction of superior suspension electrolytes for DIBs, demonstrating a groundbreaking electrolyte formulation strategy that can improve battery performance as well as lower production costs.

Název v anglickém jazyce

Salt particle suspension electrolyte with trace-water for improving ionic concentrations at interfaces in zinc-based dual-ion batteries

Popis výsledku anglicky

Dual-ion batteries (DIBs) have garnered significant interest due to their cost-effectiveness, high operating voltage, and eco-friendly nature. The electrolyte, serving as the provider of active ions during the charge/discharge cycles, is pivotal to the performance metrics of DIBs, such as capacity, energy density, and lifespan. Despite this, the high-concentration electrolytes that rely heavily on main salts often compromise the cost-effectiveness of DIBs. Therefore, a salt particle suspension electrolyte (SPSE) system has been successfully developed based on a linear carbonate solvent with a trace amount of water and applied in graphite‖zinc and graphite‖graphite DIBs. This innovative SPSE offers a high surface anion concentration that reduces concentration polarization, improves anion utilization efficiency at the electrode surface, and ensures a sufficient anion supply even at relatively low electrolyte concentrations. The prototype DIB, based on a zinc metal-free anode concept utilizing a graphite anode, an expanded graphite cathode, and a SPSE with a zinc trifluoromethylsulfonate [Zn(OTf)2] salt has demonstrated a remarkable discharge capacity of 178.66 mA h g−1 at a current rate of 10 mA g−1, and an impressive 84.7% capacity retention after 240 cycles at 100 mA g−1. The energy density of the battery with respect to the cathode mass soared to 304.8 W h kg−1. Our results provide novel insight into the rational design and construction of superior suspension electrolytes for DIBs, demonstrating a groundbreaking electrolyte formulation strategy that can improve battery performance as well as lower production costs.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

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 Materials Chemistry A

ISSN

2050-7488

e-ISSN

2050-7496

Svazek periodika

13

Číslo periodika v rámci svazku

21

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

15871-15882

Kód UT WoS článku

001474097700001

EID výsledku v databázi Scopus

2-s2.0-105003573407