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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

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

Project

<a href="/en/project/GC20-16124J" target="_blank" >GC20-16124J: Two-dimensional layered transition metal dichalcogenides/ nanostructured carbons composites for electrochemical energy storage and conversion</a><br>

Continuities

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

Publication year

2024

Confidentiality

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

Name of the periodical

Energy &amp; Environmental Science

ISSN

1754-5692

e-ISSN

1754-5706

Volume of the periodical

17

Issue of the periodical within the volume

3

Country of publishing house

GB - UNITED KINGDOM

Number of pages

12

Pages from-to

1141-1152

UT code for WoS article

001135693200001

EID of the result in the Scopus database

2-s2.0-85181944883