Deeping Insight of Weakly Solvating Halogen-Free Electrolyte in Enhancing the Electrochemical Performance of Magnesium–Sulfur Batteries DOI

Mostafa A. Moselhy,

Abdel Monem Mostafa,

Engy El-Dek

et al.

Langmuir, Journal Year: 2024, Volume and Issue: 40(49), P. 26086 - 26095

Published: Nov. 27, 2024

Magnesium–sulfur (Mg–S) batteries offer a promising energy storage system due to their high theoretical capacity. However, the sluggish conversion reaction kinetics and shuttle effect of magnesium polysulfides hinder practical application. The charge density divalent Mg2+ cations leads slow caused by significant electrostatic interactions between its surrounding solvent anion species. This study probes impact incorporating weakly coordinating tetrahydrofuran (THF) regulate solvation sheath's interfacial chemistry enhance mobility ions in halogen-free electrolyte (HFE) based on Mg(NO3)2. An effective anode/electrolyte interface is engineered protect Mg anode from passivation reduce shuttle. HFE–THF exhibits relatively goodelectrochemical performance, ionic conductivity, low overpotential for plating stripping. Mg–S cells with achieve initial specific capacities approximately 580 mAh g–1, fluctuated Coulombic efficiency at current 20 μA cm–2, extended cycle life compared blank HFE.

Language: Английский

Understanding the Cathode‐Electrolyte Interfacial Chemistry in Rechargeable Magnesium Batteries DOI
Hucheng Shi, Guixin Wang,

Zhechen Wang

et al.

Advanced Science, Journal Year: 2024, Volume and Issue: 11(25)

Published: April 6, 2024

Abstract Rechargeable magnesium batteries (RMBs) have garnered significant attention due to their potential provide high energy density, utilize earth‐abundant raw materials, and employ metal anode safely. Currently, the lack of applicable cathode materials has become one bottleneck issues for fully exploiting technological advantages RMBs. Recent studies on Mg cathodes reveal divergent storage performance depending electrolyte formulation, posing interfacial as a previously overlooked challenge. This minireview begins with an introduction representative cathode‐electrolyte phenomena in RMBs, elaborating unique solvation behavior 2+ , which lays foundation chemistries. It is followed by presenting recently developed strategies targeting promotion desolvation alternative cointercalation approaches circumvent step. In addition, efforts enhance compatibility via development engineering are highlighted. Based abovementioned discussions, this finally puts forward perspectives challenges establishment stable interface fast chemistry

Language: Английский

Citations

18
Research advances of magnesium and magnesium alloys globally in 2023 DOI Creative Commons
Jia She, Jing Chen,

Xiaoming Xiong

et al.

Journal of Magnesium and Alloys, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 1, 2024

Language: Английский

Citations

16
Contact Ion-Pair-Dominated Electrolyte Enabling Inorganic-Rich Solid–Electrolyte Interphase for Long-Cycling Magnesium Metal Anodes DOI
Meng Zhang, Wanyu Zhao, Yuan Liu

et al.

ACS Energy Letters, Journal Year: 2025, Volume and Issue: unknown, P. 552 - 561

Published: Jan. 1, 2025

Mg anodes are hindered by a huge overpotential and limited cycling life, stemming primarily from the unstable interphase between electrolyte. An effective approach lies in establishing an anion-derived, inorganic-rich solid–electrolyte (SEI) that mitigates continuous reduction of Nevertheless, high charge density divalent cations poses significant challenge balancing coordination dissociation anions within Mg2+ solvation sheath. Herein, selecting small-sized OTf–, diglyme solvent, trimethyl phosphate (TMP) as cosolvents with similar donor number (DN) values, electrolyte-dominated Mg2+–OTf– contact ion-pair configuration is achieved, further deriving stable inorganic SEI containing fluoride phosphide components. Among them, TMP can break lattice energy magnesium salts, while OTf– low electron delocalization ensure degree Mg2+, jointly realizing anion chemistry. MgF2 MgS, dominated decomposition at potential 0.6 V (vs Mg/Mg2+), enhance electronic insulation interphase. Consequently, exhibit superior performance over 3200 h polarization (<0.1 V) excellent plating/stripping Coulombic efficiency 1000 cycles 0.1 mA cm–2.

Language: Английский

Citations

2
Insights into Hyper-Efficient Construction of Compact Artificial SEI for Highly Reversible Mg Metal Anode DOI
Yuhang Chen, Xing Shen,

Jingfeng Wang

et al.

ACS Energy Letters, Journal Year: 2024, Volume and Issue: unknown, P. 5616 - 5626

Published: Oct. 29, 2024

Language: Английский

Citations

12
Asymmetric SO3CF3−‐Grafted Boron‐Center Anion Enables Boron‐Containing Interphase for High‐Performance Rechargeable Mg Batteries DOI

Xueting Huang,

Shuangshuang Tan, Jinlong Chen

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(17)

Published: Jan. 4, 2024

Abstract Mg(SO 3 CF ) 2 (Mg(OTf) is a simple and cost‐effective magnesium salt, which can promote the future applications of rechargeable batteries (RMBs). However, Mg(OTf) /ether electrolytes suffer from poor electrochemical properties due to low solubility serious decomposition passivation [Mg 2+ ‐OTf − ] ion pair on Mg. Herein, OTf anion successfully grafted low‐cost fluoride boronic esters (B(OC x H y F 2x‐y+1 obtain asymmetric weak‐coordination boron‐center [B(OC OTf] in ether electrolytes. The ‐OCH (TFE) groups B(TFE) effectively realize charge delocalization B‐O plane, restraining independent pair. co‐decomposition [B(TFE) induces formation B‐containing organic/inorganic interphase, thus achieving reversible Mg plating/stripping. After further solubilization reaction, obtained electrolyte exhibits high average coulombic efficiency 98.13% long‐term cycling stability (1000 h). Notably, long life (capacity retention 90.2% after 600 cycles at 1 C) high‐rate capacity (43.0 mAh g −1 5 Mg/Mo 6 S 8 full cell demonstrate favorable electrolyte/cathode compatibility. This work brings new insights design new‐type Mg‐salts high‐performance for commercial RMBs.

Language: Английский

Citations

11
Recent progress of magnesium electrolytes for rechargeable magnesium batteries DOI
Qi Sun, Shaohua Luo, Rui Huang

et al.

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 515, P. 215956 - 215956

Published: May 20, 2024

Language: Английский

Citations

9
Anion-derived contact ion pairing as a unifying principle for electrolyte design DOI
Stefan Ilić, Sydney N. Lavan, Justin G. Connell

et al.

Chem, Journal Year: 2024, Volume and Issue: 10(10), P. 2987 - 3007

Published: Aug. 26, 2024

Language: Английский

Citations

7
Challenges and Progress in Anode‐Electrolyte Interfaces for Rechargeable Divalent Metal Batteries DOI Creative Commons
Liping Wang, Sibylle Riedel, Zhirong Zhao‐Karger

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(38)

Published: July 31, 2024

Abstract Divalent metal batteries have attracted considerable attention in scientific exploration for sustainable energy storage solutions owing to the abundant reserves of magnesium (Mg) and calcium (Ca), competitive low redox potentials Mg/Mg 2+ (–2.37 V vs SHE) Ca/Ca (–2.87 couples, as well high theoretical capacities both anodes. However, development these faces fundamental challenges stemming from limited cycling stability efficiency Mg/Ca These issues primarily originate sluggish electrochemical kinetics divalent metals, particularly at anode‐electrolyte interfaces. This comprehensive review provides an up‐to‐date overview advancements field interface batteries, covering aspects ranging its formation, morphology, composition their influence on reversible deposition metals. Recent approaches aimed enhancing performance metallic Mg Ca anodes across various electrolytes are summarized discussed, with goal providing insights new strategies future research.

Language: Английский

Citations

6
Critical Ingredients Revitalize Magnesium‐Metal Batteries: Rationality and Challenges DOI Open Access
Jinlei Zhang, Zhonghua Zhang, Hang Zhou

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 4, 2025

Multivalent-metal batteries hold tremendous promise in solving safety and sustainability problems encountered by common lithium-ion batteries, but the lack of ideal electrolyte solutions restricts their large-scale adoption. Tuning structures with functional ingredients, especially amines/methoxy-based amines phosphates, can revitalize multivalent-metal anodes high-voltage cathodes conventional electrolytes, unlocking full potential. However, a rational clear understanding implications these notwithstanding critically important to commercially available design, has not been widely accepted. This concise perspective aims provide timely analysis discussion on ingredients' functionalities solvation shell speciation, interphase evolution, consequently metal plating/stripping kinetics acceleration. In addition prevailing coordination interactions, fresh understandings intermolecular ionization/association unique formation are underscored close relationship between chemistries weakly passivated properties. The existing proposed outlooks expected promote next breakthroughs for rechargeable batteries.

Language: Английский

Citations

0
Anion-Regulated Solvation Structure and Electrode Interface toward Rechargeable Magnesium Batteries DOI
Duo Zhang, Miao Zhou, E. Sheha

et al.

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: March 13, 2025

Developing chlorine-free electrolytes enabling fast Mg2+ transport through a solid/cathode-electrolyte interphase (SEI/CEI) remains critical for rechargeable magnesium batteries (RMBs). However, single-anion often lack the necessary redox properties this requirement. Here, we propose dual-anion electrolyte combining bis(trifluoromethanesulfonyl)imide and 1-butyl-1-methylpiperidinium trifluoromethylsulfonate (PP14CF3SO3) in diglyme 2-methoxyethylamine (MOEA) solvent, achieving efficient Mg plating/stripping, cathode compatibility, high anodic stability. The electrostatic interactions between MOEA Mg2+/CF3SO3– stabilize Mg-anode SEI while fostering CxNy-rich CEI formation. This leads to significantly improved performance Mg∥Mg stainless steel (SS)∥Mg cells, with an extended lifespan over 2500 h average Coulombic efficiency of 98.1%, respectively. Mo6S8∥Mg full cells exhibit excellent rate performance, poly(6,6′,6″-(benzene-1,3,5-triyl)tris(9,10-anthracenedione)) (PBAQ)∥Mg operate at 2.8 V (1 A g–1) ∼70% capacity retention after 200 cycles. work highlights anion-mediated solvation regulation, providing insights into advanced engineering high-performance RMBs.

Language: Английский

Citations

0