Multifunctional electrolyte additive for high power lithium metal batteries at ultra-low temperatures DOI Creative Commons
Kai Liu, Weili Zhang, Qingqing Feng

и другие.

Research Square (Research Square), Год журнала: 2024, Номер unknown

Опубликована: Дек. 3, 2024

Abstract Ultra-low temperature lithium metal batteries face significant challenges, particularly sluggish ion transport and uncontrolled dendrite formation, especially under high power. An ideal electrolyte requires carrier concentration, low viscosity, rapid desolvation, stable interfaces. However, harmonizing these attributes remains a formidable task. Here, we designed synthesized multifunctional additive, perfluoroalkylsulfonyl quaternary ammonium nitrate (PQA-NO3), which features both cationic (PQA+) anionic (NO3-) components. PQA+ reacts in situ with to form an inorganic-rich solid-electrolyte interphase (SEI) that enhances Li+ through the SEI film. NO3- creates anion-rich, solvent-poor solvation structure, improving oxidation stability at cathode/electrolyte interface reducing Li+-solvent interactions. This allows ether-based electrolytes achieve voltage tolerance, increased ionic conductivity, lower desolvation energy barriers. The Li (40 µm)||NMC811 (3 mAh cm-2) cells developed exhibited cycling -60 ℃ 450 Wh kg-1 pouch cell retained 48.1% capacity -85 ℃, achieving remarkable density of 171.8 kg-1. Additionally, demonstrated discharge rate 3.0 C -50 reaching power 938.5 W kg-1, highlighting electrolyte's potential for high-rate extreme low-temperature environments.

Язык: Английский

Ion‐Conducting Molecular‐Grafted Sustainable Cellulose Quasi‐Solid Composite Electrolyte for High Stability Solid‐State Lithium‐Metal Batteries DOI
Ruixue Wang, Weiliang Dong,

Zhennuo Song

и другие.

Advanced Functional Materials, Год журнала: 2024, Номер 34(37)

Опубликована: Май 8, 2024

Abstract Cellulose‐based solid electrolyte possesses the characteristics of low cost, high strength, and sustainability, has great potential in field solid‐state lithium metal batteries. However, large hydrogen bonds between cellulose molecules make molecular chains tightly arranged, hinder ion conduction, seriously limiting its further development. Herein, an ion‐conducting grafting strategy is proposed for fabrication acetate quasi‐solid composite (CLA‐CN‐LATP QCE) with a superior ionic conductivity 1.25 × 10 −3 S cm −1 at room temperature. Benefited from grafted functional molecules, assembled symmetrical battery exhibits polarization voltage highly stable stripping/plating cycling more than 1200 h 0.1 mA −2 current density. Moreover, it endows LFP|CLA‐CN‐LATP QCE|Li excellent long‐cycle stability 1500 cycles 0.5 C 25 °C capacity retention 92.1%. Importantly, this work provides effective opening transport channel improving interface properties electrolytes electrodes.

Язык: Английский

Процитировано

13
Multifunctional electrolyte additive for high power lithium metal batteries at ultra-low temperatures DOI Creative Commons
Weili Zhang, Yang Lu, Qingqing Feng

и другие.

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Апрель 8, 2025

Язык: Английский

Процитировано

1
Multiple Functional Bonds Integrated Interphases for Long Cycle Sodium‐Ion Batteries DOI
Yongsheng Huang, Qingqing Zhang, Xiao‐Guang Sun

и другие.

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(46)

Опубликована: Июнь 28, 2024

Sodium-ion batteries (SIBs) have garnered significant interest as one of the most promising energy suppliers for power grid storage. However, poor electrode/electrolyte interfacial stability leads to continual electrolyte decomposition and transition metal dissolution, resulting in rapid performance degradation SIBs. In this work, we propose a strategy integrating multiple functional bonds regulate interphase by triple-coupling succinonitrile (SN), sodium hexafluorophosphate (NaPF

Язык: Английский

Процитировано

9
Constructing an Artificial Interface as a Bifunctional Promoter for the Li Anode and the NCM Cathode in Lithium Metal Batteries DOI
Huayu Huang, Shishi Liu, Yuxiang Xie

и другие.

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(45), С. 31137 - 31149

Опубликована: Ноя. 1, 2024

The bottleneck of Li metal batteries toward practical applications lies at inferior cyclability as well dendrite issues. As a promising solution, an interface engineering strategy is proposed herein for the anode through constructing hybrid artificial interface. It assembled onto using photocontrolled free radical polymerization (photo-CRP) polyethylene glycol diacrylate-hexafluorobutyl methacrylate and hexafluorobutyl methacrylate-trifluoroethyl carbonate (PEGDA-HFMBA@HFMBA-FEMC or PH@HF layer). Among such interfaces, interior layer PEGDA-HFMBA exists protective shield with flexibility fracture resistance, while exterior HFMBA-FEMC plays role LiF reservoir to promote mass transfer its even electrodeposition. In meantime, some excess HFMBA FEMC monomers further dissolve into electrolyte molecular additives, followed by in situ generation thin robust LiF-rich cathode (CEI). With resulting anode, Li/NCM811 full cells showcase multifold amplification comparison Bare-Li, covering durable capacity retention 81.8% after 400 cycles. When cutoff voltage elevated 4.5 V working temperature 45 °C, still maintain stable operation extending 300

Язык: Английский

Процитировано

9
Electrolyte Engineering to Construct Robust Interphase with High Ionic Conductivity for Wide Temperature Range Lithium Metal Batteries DOI
Yanan Li, Bo Wen, Na Li

и другие.

Angewandte Chemie International Edition, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 18, 2024

Abstract Unstable interphase formed in conventional carbonate‐based electrolytes significantly hinders the widespread application of lithium metal batteries (LMBs) with high‐capacity nickel‐rich layered oxides (e.g., LiNi 0.8 Co 0.1 Mn O 2 , NCM811) over a wide temperature range. To balance ion transport kinetics and interfacial stability range, herein bifunctional electrolyte (EAFP) tailoring electrode/electrolyte 1,3‐propanesultone as an additive was developed. The resulting cathode‐electrolyte inorganic inner layer organic outer possesses high mechanical flexibility, alleviating stress accumulation maintaining structural integrity NCM811 cathode. Meanwhile, inorganic‐rich solid inhibits side reactions facilitates fast Li + transport. As result, Li||Li cells exhibit stable performance extensive temperatures low overpotentials, especially achieving long lifespan 1000 h at 30 °C. Furthermore, optimized EAFP is also suitable for LiFePO 4 LiCO cathodes (1000 cycles, retention: 67 %). Li||NCM811 graphite||NCM811 pouch lean (g/Ah grade) operate stably, verifying broad electrode compatibility EAFP. Notably, can climate range from −40 °C to 60 This work establishes new guidelines regulation by all‐weather LMBs.

Язык: Английский

Процитировано

9
Emerging concept of lithium-free anodes toward practical high-performance lithium batteries: Present and future DOI

Sihai Bi,

Xu Zhou,

Ruopeng Li

и другие.

Energy storage materials, Год журнала: 2024, Номер 71, С. 103592 - 103592

Опубликована: Июнь 24, 2024

Язык: Английский

Процитировано

8
Morphology-tunable anhydrous MgCO3 synthesis from magnesite solid waste via salicylic acid-Na2EDTA synergistic leaching and carbonation DOI
Jiayi Liu,

Yulian Wang,

Wanzhong Yin

и другие.

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 162168 - 162168

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

1
Enhanced performance in lithium metal batteries: A dual-layer solid electrolyte interphase strategy via perfluoropolyether derivative additive DOI
Yu Zhan, Pengfei Zhai, Tinglu Song

и другие.

Chemical Engineering Journal, Год журнала: 2024, Номер 491, С. 151974 - 151974

Опубликована: Май 6, 2024

Язык: Английский

Процитировано

4
Achieving Uniform Li Deposition and Suppressed Electrolyte Flammability in Li‐Metal Batteries via Designing Localized High‐Concentration Electrolytes DOI
Xingkai Wang, He Huang, Hong Zhang

и другие.

Small, Год журнала: 2024, Номер 20(35)

Опубликована: Май 9, 2024

The increasing need for energy storage devices with high density has led to significant interest in Li-metal batteries (LMBs). However, the use of commercial electrolytes LMBs is problematic due their flammability, inadequate performance at low temperatures, and tendency promote growth lithium dendrites other flaws. This study introduces a localized high-concentration electrolyte (LHCE) that addresses these issues by employing non-flammable components incorporating carefully designed additives enhance flame retardancy low-temperature performance. By optimize electrolyte, it possible attain inorganic-dominated solid interphases on both cathode anode. achievement results uniform deposition lithium, as well suppression decomposition deterioration. Consequently, this LHCE achieve over 300 stable cycles LiNi

Язык: Английский

Процитировано

4
Hybrid Solvent Coupled with Dual-Salt Electrolyte Enables High-Performance Lithium–Metal Batteries DOI

Ruiqi Chai,

Jipeng Xu,

Shuhao Yan

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Фев. 6, 2025

Lithium-metal batteries (LMBs) are widely recognized as the next-generation energy storage technology due to their high density, while commercialization is hindered by low Coulombic efficiency and uncontrolled Li dendrite growth. To address these challenges, an anion-rich solvation structure achieved a hybrid solvent coupled with dual-salt electrolyte. The strongly coordinating DTA binds tightly Li+ in first sheath, weakly FEC occupies second shell. Moreover, FEC, weak ability, allows TFSI- DFOB- enter primary sheath. anion-derived SEIs exhibit enhanced mechanical strength ionic conductivity, leading accelerated transport kinetics inhibited As result, Li||Cu half-cell employing electrolyte delivers average Aurbach of 99.0%. Li||LiNi0.8Co0.1Mn0.1O2 battery exhibits robust capacity retention 90.8% over 300 cycles, demonstrating viability practical LMBs.

Язык: Английский

Процитировано

0