Li2MoO4 tailored Anion‐enhanced Solvation Sheath Layer Promotes Solution‐phase Mediated Li‐O2 Batteries DOI Open Access
Fengling Zhang, Zhengqiang Hu,

Jingning Lai

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 16, 2024

Abstract The high overpotential of Li‐O 2 batteries (LOBs) is primarily triggered by sluggish charge transfer kinetics at the reaction interfaces. A typical LiBr redox mediator (RM) catalyst can effectively reduce battery's overpotential. However, it prone to shuttling and corroding Li anode, leading RM loss reduced energy efficiency. To address these challenges, we introduced MoO 4 into LiBr‐containing electrolyte promote solution‐phase mediated LOBs. This addition tailors anion‐enhanced + solvation sheath layer forms a robust anion‐derived solid interphases (SEI) on anode. SEI mitigates corrosion soluble Br 3 − /Br attacks highly reactive oxygen species. Additionally, dispersed high‐density exhibits strong adsorption capabilities for O /LiO Br‐related species during discharge/charge process, thereby promoting growth decomposition in solution phase inhibiting shuttle effect Consequently, LOBs demonstrate exceptional cycling stability (415 cycles) efficiency (86.2 %), paving way sustainable development practical application battery systems.

Language: Английский

Intermolecular Interaction Mediated Potassium Ion Intercalation Chemistry in Ether‐Based Electrolyte for Potassium‐Ion Batteries DOI

Hongliang Xie,

Honghong Liang,

Pushpendra Kumar

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(28)

Published: June 4, 2024

Abstract Electrolyte design is indeed a highly effective strategy to improve battery performance. However, identifying the intermolecular interaction in electrolyte solvation structure rarely reported potassium‐ion batteries. Herein, it discovered that solvent‐solvent can be formed when introducing cyclopentylmethyl ether (CPME) solvent into commonly used 1,2‐dimethoxyethane (DME)‐based electrolytes. Such not only analyzed by 2D 1 H‐ H correlation spectroscopy for first time but also found weaken K + ‐DME significantly, consequently enabling reversible (de‐)intercalation within graphite. By employing this without using any fluorine‐based solvent, new fluorine‐free and low‐concentration ether‐based designed, which compatible with graphite facilitates of high‐energy‐density safe potassium ion sulfur A novel molecular interfacial model further presented analyze behaviors ‐solvent‐anion complexes on electrode surface are affected interactions, elucidating reasons behind superior compatibility performance at scale. This work sheds some light critical role solvent–solvent interactions batteries provides valuable insights engineering enhancing electrolytes

Language: Английский

Citations

25
Solvent-derived organic-rich SEI enables capacity enhancement for low-temperature lithium metal batteries DOI

Xiangkai Yin,

Boyang Li, Hong Liu

et al.

Joule, Journal Year: 2025, Volume and Issue: unknown, P. 101823 - 101823

Published: Feb. 1, 2025

Language: Английский

Citations

5
Covalent organic frameworks for high-performance rechargeable lithium metal batteries: Strategy, mechanism, and application DOI
Conghui Zhang,

Fangkun Li,

Tengteng Gu

et al.

Progress in Materials Science, Journal Year: 2025, Volume and Issue: unknown, P. 101455 - 101455

Published: Feb. 1, 2025

Language: Английский

Citations

1
Indium-MOF as Multifunctional Promoter to Remove Ionic Conductivity and Electrochemical Stability Constraints on Fluoropolymer Electrolytes for All-Solid-State Lithium Metal Battery DOI Creative Commons
Xiong Xiong Liu, Long Pan, Haotian Zhang

et al.

Nano-Micro Letters, Journal Year: 2025, Volume and Issue: 17(1)

Published: May 7, 2025

Abstract Fluoropolymers promise all-solid-state lithium metal batteries (ASLMBs) but suffer from two critical challenges. The first is the trade-off between ionic conductivity ( σ ) and anode reactions, closely related to high-content residual solvents. second, usually consciously overlooked, fluoropolymer’s inherent instability against alkaline anodes. Here, we propose indium-based metal–organic frameworks (In-MOFs) as a multifunctional promoter simultaneously address these challenges, using poly(vinylidene fluoride–hexafluoropropylene) (PVH) typical fluoropolymer. In-MOF plays trio: (1) adsorbing converting free solvents into bonded states prevent their side reactions with anodes while retaining advantages on Li + transport; (2) forming inorganic-rich solid electrolyte interphase layers PVH reacting promote uniform deposition without dendrite growth; (3) reducing crystallinity promoting Li-salt dissociation. Therefore, resulting PVH/In-MOF (PVH-IM) showcases excellent electrochemical stability anodes, delivering 5550 h cycling at 0.2 mA cm −2 remarkable cumulative capacity of 1110 mAh . It also exhibits an ultrahigh 1.23 × 10 −3 S −1 25 °C. Moreover, LiFePO 4 |PVH-IM|Li full cells show outstanding rate capability cyclability (80.0% retention after 280 cycles 0.5C), demonstrating high potential for practical ASLMBs.

Language: Английский

Citations

1
Unraveling Inherent Degradation Mechanism of Electrolyte at High-Voltage and the d2sp3 Hybridization Strategy for Non-Flammable 4.8 V LiCoO2 Battery DOI

Zhaoyu Sun,

Yuxuan Liu, Jiahe Chen

et al.

Published: Jan. 1, 2025

The potential risk of transition metal (TM) ion dissolution is a prevalent issue in nearly all layered oxide cathodes. While the detrimental effects this are widely discussed context cathode material design, implications for electrolyte design receive comparatively less attention. In fact, severe decomposition frequently occurs after TM ions. This phenomenon typically attributed to catalytic However, there lack research that clearly explains destabilization electrolyte. study delves into different interface behaviors between Co3+ and Li+. Near anode surface, significant proportion solvent molecules PF6- ions escape from Li+ solvation sheath, with only small portion contributing formation electrode/electrolyte interface. Subsequently, free reduced, interpolated or deposited anode. contrast, exhibit stronger binding ability than ions, leading challenges desolvation. sheaths demonstrate reduction instability, trapped must be reduced. order mitigate hazard dissolution, fluorinated cathode/electrolyte was applied inhibit Isobutyronitrile (IBN) used capture harmful electrolyte, resulting d2sp3 hybrid orbitals when IBN combines Co3+. stable chelated complex effectively eliminated associated sheaths. developed through hybridization strategy addresses dissolved Co, even 0.1M Co intentionally added LCO batteries utilizing an impressive increase capacity retention, rising 56.6% 84.5% 300 cycles at 4.7 V. Additionally, retention battery 73.3% 200 4.8

Language: Английский

Citations

0
Fluoride Graphdiyne Enhances Polymer Electrolytes Through Regional Electric Potential Synergies for High‐Performance Solid‐State Lithium‐Metal Batteries DOI Open Access
Kaihang Wang, Chao Jiang, Luwei Zhang

et al.

Small, Journal Year: 2025, Volume and Issue: 21(11)

Published: Feb. 12, 2025

Abstract Solid‐state polymer electrolytes (SSPEs) have attracted considerable attention for use in all‐solid‐state lithium‐metal batteries (ASSLMBs). However, their low Li‐ion conductivity, small transference number, and poor interfacial compatibility hinder practical application, which may be associated with the uncoordinated interactions between key components SSPEs including polymers, lithium salts, nanofillers. In this study, fluoride graphdiyne (FGDY) is used as a nanofiller to enhance overall performance of PVDF‐HFP/LiTFSI ASSLMBs through regional electric potential synergies (REPS), refers proper interaction particular ordered difference regions 2D plane SSPEs. Consequently, dissociation LiTFSI promoted, migration Li‐ions accelerated. Moreover, uniform LiF‐rich solid electrolyte interphase efficiently inhibits growth dendrites, guaranteeing excellent stability. The assembled Li//LiFePO 4 Li//LiNi 0.6 Co 0.2 Mn O 2 full cells exhibit reversible capacity stable cycling at 30 °C. This study presents strategy improving by fabricating nanofillers highly regions. Graphdiyne‐based materials, serve optimize REPS, provide wide scope application ASSLMBs.

Language: Английский

Citations

0
Unveiling the Entropic Effect of Electrolytes on Kinetics and Cyclability for Practical Lithium–Sulfur Batteries DOI
Donghyeok Son, Jinuk Kim, Wenhui Zhao

et al.

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

Published: April 23, 2025

Lithium-sulfur (Li-S) batteries under low-temperature and lean electrolyte conditions for practical application are hindered by a sluggish conversion reaction, low sulfur utilization, cycling stability. Herein, we designed high-entropy (HE) mixing three Li salts. The HE simultaneously improves lithium sulfide (Li2S) reaction kinetics, cyclability due to the anticlustering effect on polysulfides, three-dimensional Li2S growth, robust anion-derived solid interphase layer formation, respectively. Consequently, exhibits high initial reversible capacity (1159.9 mAh g-1) stability 40 cycles electrolyte-to-sulfur ratio (3.5 μL mg-1) at pouch cell level. In addition, Li-S with decay of 0.01% per cycle during 200 -15 °C.

Language: Английский

Citations

0
Review—Advances in Rechargeable Lithium-Ion Batteries Utilizing Polyoxometalate-Functionalized Nanocarbon Materials DOI Creative Commons

Samaneh Shahsavarifar,

Morteza Rezapour, Mehdi Mehrpooya

et al.

Journal of The Electrochemical Society, Journal Year: 2024, Volume and Issue: 171(8), P. 080536 - 080536

Published: Aug. 1, 2024

Polyoxometalates (POMs) are inorganic nanoclusters that consist of oxygen and transition metals. These serve as excellent precursors for creating electrode materials contain Additionally, the interaction between POMs carbon substrates produces positive synergistic effects. There has been considerable attention on employing nanostructures (for example nanotubes, graphene, mesoporous carbon) in composite diverse purposes including catalysis, transformation, storage energy, molecular detection, electrical detection. By combining reactive nature with exceptional properties nanostructures, highly desirable features can be achieved. This review delves into extensive use POM/nanocarbon constructing rechargeable lithium-ion batteries, providing an in-depth analysis characteristics techniques employed binding carbon.

Language: Английский

Citations

3
Garnet and Li29Zr9Nb3O40 Modified PEO‐based Hybrid Solid Electrolytes for All‐solid‐state Lithium Metal Batteries DOI
Liu Qing,

H. Q. Lin,

Jie Zhao

et al.

European Journal of Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 27(24)

Published: June 17, 2024

Abstract Inorganic‐organic hybrid solid electrolytes (HSEs) are an important category of electrolyte materials for solid‐state batterie. It is interest and importance to investigate the influence composition content inorganic fillers on electrochemical performance HSEs. In this paper, we fabricated HSEs using polyethylene oxide (PEO) as matrix incorporating different powders active fillers. A series with contents Ga/Nb co‐substituted garnet (Li 6.35 Ga 0.15 La 3 Zr 1.8 Nb 0.2 O 12 , GN‐LLZO) Y‐doped Li 29 9 40 29.3 8.7 Y 0.3 0.3Y‐LZNO) were carefully designed. The ionic conductivity these PEO‐based studied, their in lithium‐ion batteries LiFePO 4 (LFP) cathode material metal anode evaluated. results showed that HSE addition powders, namely PEO LiTFSI @5 % GN‐LLZO +5 %0.3Y‐LZNO (noted PL3) optimized 2.9×10 −4 S cm −1 at room temperature activation energy E a 0.21 eV. has stability window 4.65 V transfer number 0.242. not only enhanced conductivities HSEs, but also exhibited superior interfacial compatibility electrodes, leading improved cycle LFP/PL3/Li battery configuration.

Language: Английский

Citations

2
Li2MoO4 tailored Anion‐enhanced Solvation Sheath Layer Promotes Solution‐phase Mediated Li‐O2 Batteries DOI
Fengling Zhang, Zhengqiang Hu,

Jingning Lai

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 16, 2024

The high overpotential of Li-O

Language: Английский

Citations

2