In situ polymerization of solid-state polymer electrolytes for lithium metal batteries: a review

Energy & Environmental Science, Год журнала: 2024, Номер 17(13), С. 4426 - 4460

Опубликована: Янв. 1, 2024

The practical application of commercialized lithium-ion batteries (LIBs) currently faces challenges due to using liquid electrolytes (LEs), including limited energy density and insufficient safety performance.

Язык: Английский

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Development of Polymer-based Artificial Solid Electrolyte Interphase for Safer Li-Metal Batteries: Challenges, Strategies and Prospects

Nano Energy, Год журнала: 2024, Номер 129, С. 109970 - 109970

Опубликована: Июль 8, 2024

Язык: Английский

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Selectively fluorinated aromatic lithium salts regulate the solvation structure and interfacial chemistry for all-solid-state batteries

Science Advances, Год журнала: 2025, Номер 11(5)

Опубликована: Янв. 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

Язык: Английский

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Catalysis of a LiF-rich SEI by aromatic structure modified porous polyamine for stable all-solid-state lithium metal batteries

Chemical Science, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

POP fillers containing aromatic groups with internal π–π effect can catalyze the decomposition of LiTFSI to form a stable LiF-rich SEI layer and inhibit growth lithium dendrites, which helps cycle PEO-based solid-state batteries.

Язык: Английский

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Revisiting Dipole-Induced Fluorinated-Anion Decomposition Reaction for Promoting a LiF-Rich Interphase in Lithium-Metal Batteries

Nano-Micro Letters, Год журнала: 2025, Номер 17(1)

Опубликована: Янв. 20, 2025

Abstract Building anion-derived solid electrolyte interphase (SEI) with enriched LiF is considered the most promising strategy to address inferior safety features and poor cyclability of lithium-metal batteries (LMBs). Herein, we discover that, instead direct electron transfer from surface polar groups bis(trifluoromethanesulfonyl)imide (TFSI − ) for inducing a LiF-rich SEI, dipole-induced fluorinated-anion decomposition reaction begins adsorption Li ions highly dependent on their mobility surface. To demonstrate this, single-layer graphdiyne MXene (sGDY@MXene) heterostructure has been successfully fabricated integrated into polypropylene separators. It found that adsorbed connect electron-donating sGDY@MXene TFSI , facilitating interfacial charge decomposition. However, this does not capture entire picture. The also renders high mobility, enabling them reach optimal sites expedite coordination processes O O=S=O F broken –CF 3 bond cleavage. In contrast, immobilized more lithiophilic pristine retard these cleavage processes. Consequently, accelerated sGDY@MXene. This work highlights dedicate balance between lithiophilicity Li-ion in effectively promoting SEI long-term stability LMBs.

Язык: Английский

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Opening and Constructing Stable Lithium‐ion Channels within Polymer Electrolytes

Angewandte Chemie, Год журнала: 2024, Номер 136(31)

Опубликована: Май 18, 2024

Abstract Lithium‐ion batteries play an integral role in various aspects of daily life, yet there is a pressing need to enhance their safety and cycling stability. In this study, we have successfully developed highly secure flexible solid‐state polymer electrolyte (SPE) through the situ polymerization allyl acetoacetate (AAA) monomers. This SPE constructed efficient Li + transport channel inside effectively improved solid‐solid interface contact reduce interfacial impedance. Furthermore, it exhibited excellent thermal stability, ionic conductivity 3.82×10 −4 S cm −1 at room temperature (RT), number ( t Li+ ) 0.66. The numerous oxygen vacancies on layered inorganic SiO 2 created environment for TFSI − immobilization. Free migrated rapidly C=O equivalence site with poly(allyl acetoacetate) (PAAA) matrix. Consequently, when cycled 0.5C RT, displayed initial discharge specific capacity 140.6 mAh g retention rate 70 % even after 500 cycles. Similarly, higher 5C, demonstrated 132.3 while maintaining

Язык: Английский

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Opening and Constructing Stable Lithium‐ion Channels within Polymer Electrolytes

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(31)

Опубликована: Май 18, 2024

Abstract Lithium‐ion batteries play an integral role in various aspects of daily life, yet there is a pressing need to enhance their safety and cycling stability. In this study, we have successfully developed highly secure flexible solid‐state polymer electrolyte (SPE) through the situ polymerization allyl acetoacetate (AAA) monomers. This SPE constructed efficient Li + transport channel inside effectively improved solid‐solid interface contact reduce interfacial impedance. Furthermore, it exhibited excellent thermal stability, ionic conductivity 3.82×10 −4 S cm −1 at room temperature (RT), number ( t Li+ ) 0.66. The numerous oxygen vacancies on layered inorganic SiO 2 created environment for TFSI − immobilization. Free migrated rapidly C=O equivalence site with poly(allyl acetoacetate) (PAAA) matrix. Consequently, when cycled 0.5C RT, displayed initial discharge specific capacity 140.6 mAh g retention rate 70 % even after 500 cycles. Similarly, higher 5C, demonstrated 132.3 while maintaining

Язык: Английский

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Tailoring Multiple Interactions in Poly (Urethane‐Urea)‐Based Solid‐State Polymer Electrolytes for Long‐Term Cycling Lithium Metal Batteries

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 10, 2025

Abstract Polyethylene oxide (PEO)‐based solid polymer electrolytes (SPEs) are considered as one of the most promising candidates for next‐generation lithium metal batteries. However, their application is limited by poor electrode/electrolyte interfacial stability, low Li‐ions transference number, and weak mechanical strength. Herein, poly (urethane‐urea)‐based SPEs developed to enhance improve transport kinetics, provide superior properties. The (urethane‐urea) structure integrates abundant polar groups rigid conjugated moieties, which facilitate interactions with anions salt in SPEs, promoting number supporting formation a LiF‐rich electrolyte interphase (SEI) guide uniform deposition suppress dendrite growth. Furthermore, supramolecular crosslinked network formed through multiple hydrogen bonds π‐π stacking interactions, enhancing strength toughness SPEs. As result, Li//Li solid‐state symmetric cells assembled this SPE demonstrate stable cycling over 3000 h, while LiFePO 4 retain 93.6% initial capacity after 500 cycles at rate 1C. This work presents feasible design strategy developing highly functional materials.

Язык: Английский

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Composite electrolyte with self‐inserted structure and all‐trans F conformation provides fast Li⁺ transport for solid‐state Li metal batteries

InfoMat, Год журнала: 2024, Номер unknown

Опубликована: Июль 30, 2024

Abstract Solid‐state Li metal battery has attracted increasing interests for its potentially high energy density and excellent safety assurance, which is a promising candidate next generation system. However, the low ionic conductivity + transport number of solid‐state polymer electrolytes limit their practical application. Herein, composite electrolyte with self‐inserted structure proposed using layered double hydroxides (LDHs) as dopant to achieve fast channel in poly(vinylidene‐co‐trifluoroethylene) [P(VDF‐TrFE)] based electrolyte. In such electrolyte, P(VDF‐TrFE) an all‐trans conformation, all fluorine atoms locate on one side chain, providing highways. Meanwhile, LDH can immobilize anions salts electrostatic interactions, promoting dissociation salts, thereby enhancing (6.4 × 10 −4 S cm −1 ) transference (0.76). The anion immobilization effect realize uniform electric field distribution at anode surface suppress dendritic growth. Moreover, hydrogen bonding interaction between chains also endows strong mechanical properties. Thus, room temperature, || symmetric cells be stably cycled over 1000 h current 0.2 mA −2 , full LiFePO 4 cathode deliver capacity retention (>95%) after 200 cycles. This work offers route construct transport. image

Язык: Английский

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The Research Progress on COF Solid-State Electrolytes for Lithium Batteries

Chemical Communications, Год журнала: 2024, Номер 60(74), С. 10046 - 10063

Опубликована: Янв. 1, 2024

This review focuses on the role of different COFs as solid-state electrolytes, aiming to guide development electrolyte materials and battery technology.

Язык: Английский

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