A Supramolecular Gel that Exhibits Multi‐stimuli Responsiveness and High Conductivity Through Host‐Guest Interactions DOI
Jie Wang, Xiaojing Wu, Hongyan Cai

et al.

European Journal of Organic Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 8, 2024

Abstract A network‐structured supramolecular gel is constructed through host‐guest interactions between conjugated ligands and metal ions, leading to enhanced mechanical properties excellent electrical conductivity. This overcomes the problem of insufficient conductance due presence solvent in interstitial region gel. Supramolecular gels can undergo reversible sol‐gel transitions by controlling pH or temperature system. In addition, a method has been developed determine specific binding ratio molecules conductivity tests, used verify crown ether potassium ions. To explain high metallic gels, DFT SEM have employed elucidate their mechanism.

Language: Английский

Development of Polymer-based Artificial Solid Electrolyte Interphase for Safer Li-Metal Batteries: Challenges, Strategies and Prospects DOI
Tianyi Wang, Xin Liu, Shifei Huang

et al.

Nano Energy, Journal Year: 2024, Volume and Issue: 129, P. 109970 - 109970

Published: July 8, 2024

Language: Английский

Citations

17
Selectively fluorinated aromatic lithium salts regulate the solvation structure and interfacial chemistry for all-solid-state batteries DOI Creative Commons
Shuaishuai Yan, Hao Liu, Yang Lu

et al.

Science Advances, Journal Year: 2025, Volume and Issue: 11(5)

Published: Jan. 31, 2025

Solid polymer electrolytes suffer from the polymer-dominated Li + solvation structure, causing unstable electrolyte/electrode interphases and deteriorated battery performance. Here, we design a class of selectively fluorinated aromatic lithium salts (SFALS) as single conducting to regulate structure interfacial chemistry for all-solid-state metal batteries. By tuning anionic -polyether coupling is weakened, -anion coordination enhanced. The hydrogen bonding between SFALS matrix induces special “triad”-type which improves electrolyte homogeneity mechanical strength, promotes formation an ultrathin robust 2 O-rich solid interphase. Therefore, stable cycling more than 1650 cycles (Coulombic efficiency, 99.8%) LiFePO 4 /Li half cells 580 (97.4% capacity retention) full achieved. This molecular engineering strategy could inspire further advancements functional practical application

Language: Английский

Citations

5
Ionic Liquid‐Based Electrolyte with Multiple Hydrogen Bonding Network Enabling High‐Voltage Stable Proton Batteries Across Wide Temperature Range DOI Creative Commons
Xiaoyu Dong, Zhiwei Li,

Hai Xu

et al.

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

Published: Feb. 14, 2025

Proton batteries are strong contender for next-generation energy storage due to their high safety and rapid response. However, the narrow electrochemical window of acidic aqueous electrolytes limits density stability. Here, an ionic liquid (IL)-based electrolyte (EMImOTf-H3PO4) containing H3PO4 in polar IL solvent 1-ethyl-3-methylimidazolium trifluoromethanesulfonate (EMImOTf) is developed stable high-voltage storage. serving as a proton source interacts with both EMIm+ OTf-, forming intricate hydrogen bonding network that effectively prevents decomposition at voltage. The half-cell EMImOTf-H3PO4 pre-protonated vanadium hexacyanoferrate (H-VHCF) cathode demonstrates 126% improvement Coulombic efficiency over current 1 A g-1. fabricated PTCDA/MXene//EMImOTf-H3PO4//H-VHCF full battery achieves operating voltage 2 V room temperature, surpassing currently reported values batteries. After 30 000 cycles 5 g-1, retains 86.1% its initial capacity. It delivers 87.5 Wh kg-1 power 30.6 kW can maintain operation across temperature range 110 °C (-60 ∼ 50 °C). These findings present new possibilities all-weather grid-scale applications.

Language: Английский

Citations

0
Impact of Spatial Interactions in Polycarbonate-Based Electrolytes on Ion Transport Dynamics and Battery Performance DOI
Ligang Xu, Qing Wang,

Yongchao Shi

et al.

The Journal of Physical Chemistry Letters, Journal Year: 2025, Volume and Issue: unknown, P. 2856 - 2866

Published: March 10, 2025

Polymer electrolytes (PEs) show great promise in next-generation solid-state batteries. The interactions between functional monomers and lithium salts PEs remain ambiguous, constraining the material design strategy aimed at optimizing electrochemical performance. Here, we report on local spatial among components polycarbonate-based electrolytes, as determined through nuclear magnetic resonance (NMR) techniques. We used molecular dynamics simulations to rationalize distribution of ions its effect coordination anions cations. cations were further revealed from an ion perspective using variable temperature NMR techniques, shedding light how mobility is affected by different interactions. Finally, clearly delineate battery performances are Our findings provide direct experimental evidence, revealing affect diffusion level. Overall, this work provides valuable guidance for mechanistic understanding PEs.

Language: Английский

Citations

0
LiPF6-Based Locally High-Concentration Electrolyte Extends the Calendar Life of Lithium-Ion Batteries DOI
Min Ye,

Chu Wang,

Ximo Wang

et al.

Industrial & Engineering Chemistry Research, Journal Year: 2025, Volume and Issue: unknown

Published: March 19, 2025

Language: Английский

Citations

0
Anchoring Side Chains to Carbonate Groups for Reviving Stable Polycarbonate-Based Solid-State Lithium Metal Batteries DOI
Hantao Xu, Wei Deng, Jingyuan Yu

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: May 1, 2025

Polycarbonate-based electrolytes are ideal for solid-state lithium metal batteries (LMBs) due to their wider electrochemical windows and considerable ionic conductivities compared with conventional solid polymer electrolytes. However, polycarbonates encounter severe interfacial side reactions metal, leading the degradation of polymers. Herein, a spontaneously formed restricted conformation is designed via in situ anchoring chains suppress polycarbonate-based The enables shield protect degradable ester bonds cyclic carbonates, suppressing contact between anodes. As proof concept, protected electrolyte demonstrates stable cycling capability Li/Li cell beyond 1000 h at current density 0.5 mA cm-2, assembled LiNi0.8Co0.1Mn0.1O2/Li pouch also achieves similar improvement performance. This work indicates that strategy constructing conformations feasible avenue fabricating highly LMBs.

Language: Английский

Citations

0
The interface compatibility between solid-state electrolytes and lithium/silicon anodes: Challenges, recent progress and perspectives DOI
Jingwen Cui, Ling Zhang, Meng Wang

et al.

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 101, P. 113774 - 113774

Published: Sept. 18, 2024

Language: Английский

Citations

1
A Supramolecular Gel that Exhibits Multi‐stimuli Responsiveness and High Conductivity Through Host‐Guest Interactions DOI
Jie Wang, Xiaojing Wu, Hongyan Cai

et al.

European Journal of Organic Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 8, 2024

Abstract A network‐structured supramolecular gel is constructed through host‐guest interactions between conjugated ligands and metal ions, leading to enhanced mechanical properties excellent electrical conductivity. This overcomes the problem of insufficient conductance due presence solvent in interstitial region gel. Supramolecular gels can undergo reversible sol‐gel transitions by controlling pH or temperature system. In addition, a method has been developed determine specific binding ratio molecules conductivity tests, used verify crown ether potassium ions. To explain high metallic gels, DFT SEM have employed elucidate their mechanism.

Language: Английский

Citations

0