Realizing horizontal magnesium platelet deposition and suppressed surface passivation for high-performance magnesium metal batteries

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F24%3A43929942" target="_blank" >RIV/60461373:22310/24:43929942 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.rsc.org/en/content/articlelanding/2024/ee/d3ee02317f" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2024/ee/d3ee02317f</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d3ee02317f" target="_blank" >10.1039/d3ee02317f</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Realizing horizontal magnesium platelet deposition and suppressed surface passivation for high-performance magnesium metal batteries

Popis výsledku v původním jazyce

Rechargeable magnesium batteries (RMBs) are emerging as promising alternatives to lithium-ion batteries due to their high volumetric capacity and natural abundance. However, challenges arising from severe passivation and uneven deposition in conventional electrolytes persist, resulting in poor reversibility and cycling stability. Herein, a covalent molecule of 1-chloropropane (CP) is introduced into conventional electrolytes to manipulate the kinetics and surface chemistry of Mg anodes. Stemming from the reduced surface energy of the Mg (002) crystal plane from CP-Mg interactions, a horizontally arranged platelet morphology with enhanced (002) orientations is preferentially formed during the electrodeposition process. Moreover, the appropriate lowest unoccupied molecular orbital energy level of CP enables a robust Cl-rich interphase in situ formed on the Mg electrode surface. The planar deposition morphology coupled with the protective interphase can effectively suppress parasitic reactions between Mg electrodes and electrolytes and facilitate the electrochemical reaction kinetics. The as-designed electrolyte achieves reversible Mg plating/stripping with a high coulombic efficiency of 99.79% in asymmetric cells and maintains stable cycling for over 215 h in symmetric cells at an ultrahigh current density of 25 mA cm-2, outperforming previously reported results. This engineered electrolyte also exhibits excellent compatibility with different inorganic/organic cathode materials, offering promising opportunities for RMB applications. 1-chloropropane is introduced into conventional electrolytes to manipulate the kinetics and surface chemistry of Mg anodes, achieving suppressed passivation and planar Mg deposition with enhanced (002) orientations for efficient Mg metal batteries.

Název v anglickém jazyce

Realizing horizontal magnesium platelet deposition and suppressed surface passivation for high-performance magnesium metal batteries

Popis výsledku anglicky

Rechargeable magnesium batteries (RMBs) are emerging as promising alternatives to lithium-ion batteries due to their high volumetric capacity and natural abundance. However, challenges arising from severe passivation and uneven deposition in conventional electrolytes persist, resulting in poor reversibility and cycling stability. Herein, a covalent molecule of 1-chloropropane (CP) is introduced into conventional electrolytes to manipulate the kinetics and surface chemistry of Mg anodes. Stemming from the reduced surface energy of the Mg (002) crystal plane from CP-Mg interactions, a horizontally arranged platelet morphology with enhanced (002) orientations is preferentially formed during the electrodeposition process. Moreover, the appropriate lowest unoccupied molecular orbital energy level of CP enables a robust Cl-rich interphase in situ formed on the Mg electrode surface. The planar deposition morphology coupled with the protective interphase can effectively suppress parasitic reactions between Mg electrodes and electrolytes and facilitate the electrochemical reaction kinetics. The as-designed electrolyte achieves reversible Mg plating/stripping with a high coulombic efficiency of 99.79% in asymmetric cells and maintains stable cycling for over 215 h in symmetric cells at an ultrahigh current density of 25 mA cm-2, outperforming previously reported results. This engineered electrolyte also exhibits excellent compatibility with different inorganic/organic cathode materials, offering promising opportunities for RMB applications. 1-chloropropane is introduced into conventional electrolytes to manipulate the kinetics and surface chemistry of Mg anodes, achieving suppressed passivation and planar Mg deposition with enhanced (002) orientations for efficient Mg metal batteries.

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

<a href="/cs/project/GC20-16124J" target="_blank" >GC20-16124J: Dvojdimenzionální vrstevnaté dichalkogenidy přechodných kovů / nanostrukturované uhlíkové kompozity pro aplikace na elektrochemické uchovávání energie</a><br>

Návaznosti

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

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Energy &amp; Environmental Science

ISSN

1754-5692

e-ISSN

1754-5706

Svazek periodika

17

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

1141-1152

Kód UT WoS článku

001135693200001

EID výsledku v databázi Scopus

2-s2.0-85181944883