Advancing lithium metal electrode beyond 99.9% coulombic efficiency via super-saturated electrolyte with compressed solvation structure DOI Creative Commons

Wujie Yang,

Aoyuan Chen,

Ping He

и другие.

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

Опубликована: Май 7, 2025

Lithium metal negative electrode is pivotal for advancing high-energy-density lithium batteries. Despite their promise, the inherent poor interfacial stability of electrolytes on and repeated reconstruction solid electrolyte interphase lead to continuous consumption active Li electrolyte, causing rapid failure batteries under practical conditions. Here, we propose compressing spacing between ions anions recruit more around ions, forming tighter solvation clusters, then achieving super-saturated with a 16 M salt concentration in solvent phase. This compressed structure demonstrates enhanced towards electrode, attaining than 99.9% coulombic efficiency Li||Cu cells enabling long cycling life lean-Li full cells. Designed positive material proportion 68%, our pouch cell achieves specific energy 510.3 Wh kg-1 (based total mass cell) maintains stable over 100 cycles.

Язык: Английский

Nonflammable Phosphate‐Based Electrolyte for Safe and Stable Potassium Batteries Enabled by Optimized Solvation Effect DOI

Dianwei Zhang,

Hongwei Fu,

Xuemei Ma

и другие.

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(29)

Опубликована: Май 6, 2024

Abstract Current potassium‐ion batteries (PIBs) are limited in safety and lifetime owing to the lack of suitable electrolyte solutions. To address these issues, herein, we report an innovative non‐flammable design strategy that leverages optimal moderate solvation phosphate‐based solvent which strikes a balance between capability salt dissociation ability, leading superior electrochemical performance. The formulated simultaneously exhibits advantages low concentration (only 0.6 M), viscosity, high ionic conductivity, oxidative stability, safety. Our also promotes formation self‐limiting inorganic‐rich interphases at anode surface, alongside robust cathode‐electrolyte interphase on iron‐based Prussian blue analogues, mitigating electrode/electrolyte side reactions preventing Fe dissolution. Notably, PIBs employing our exhibit exceptional durability, with 80 % capacity retention after 2,000 cycles high‐voltage 4.2 V coin cell. Impressively, larger scale pouch cell, it maintains over 81 its initial 1,400 1 C‐rate average Coulombic efficiency 99.6 %. This work represents significant advancement toward realization safe, sustainable, high‐performance PIBs.

Язык: Английский

Процитировано

34
Advanced Ether‐Based Electrolytes for Lithium‐ion Batteries DOI
Shizhu Wang, Jian‐Yu Shi, Zhenhui Liu

и другие.

Advanced Energy Materials, Год журнала: 2024, Номер unknown

Опубликована: Июль 14, 2024

Abstract Lithium‐ion batteries (LIBs) have emerged as vital elements of energy storage systems permeating every facet modern living, particularly in portable electronic devices and electric vehicles. However, with the sustained economic social development, new‐generation LIBs high density, wide operating temperature range, fast charge, safety are eagerly expected, while conventional ethylene carbonate (EC)‐based electrolytes fail to satisfy corresponding requirements. Comparatively, ether‐based electrolyte fascinating properties recently been revived fields, many advanced exciting performances under developed. This review provides an extensive overview latest breakthroughs concerning applied intercalation cathodes. To systematically outline progression electrolytes, this is categorized from perspective anodes follows: i) graphite anode‐based LIBs; ii) silicon iii) lithium metal LIBs.

Язык: Английский

Процитировано

20
Designing Current Collectors to Stabilize Li Metal Anodes DOI Creative Commons

Zhimeng Hao,

Yong Lü, Gaojing Yang

и другие.

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 5, 2025

Rechargeable batteries employing Li metal anodes have gained increasing attention due to their high energy density. Nevertheless, low stability and reversibility of severely impeded practical applications. Designing current collectors (CCs) with reasonable structure composition is an efficient approach stabilizing the anodes. However, in-depth comprehensive understanding about design principles modification strategies CCs for realizing stable still lacking. Herein, a critical review focusing on rational summarized. First, requirements in are elucidated clarify objectives CCs. Then, including lithiophilic site modification, 3D architecture construction, protective layer crystalline plane engineering, as well corresponding highlighted. On this basis, recent progress development discussed. Finally, future directions suggested focus developing operando monitoring technology, designing cells under conditions close commercial This will spur more insightful researches toward advanced CCs, promote commercialization.

Язык: Английский

Процитировано

4
Nonflammable Phosphate‐Based Electrolyte for Safe and Stable Potassium Batteries Enabled by Optimized Solvation Effect DOI

Dianwei Zhang,

Hongwei Fu,

Xuemei Ma

и другие.

Angewandte Chemie, Год журнала: 2024, Номер 136(29)

Опубликована: Май 6, 2024

Abstract Current potassium‐ion batteries (PIBs) are limited in safety and lifetime owing to the lack of suitable electrolyte solutions. To address these issues, herein, we report an innovative non‐flammable design strategy that leverages optimal moderate solvation phosphate‐based solvent which strikes a balance between capability salt dissociation ability, leading superior electrochemical performance. The formulated simultaneously exhibits advantages low concentration (only 0.6 M), viscosity, high ionic conductivity, oxidative stability, safety. Our also promotes formation self‐limiting inorganic‐rich interphases at anode surface, alongside robust cathode‐electrolyte interphase on iron‐based Prussian blue analogues, mitigating electrode/electrolyte side reactions preventing Fe dissolution. Notably, PIBs employing our exhibit exceptional durability, with 80 % capacity retention after 2,000 cycles high‐voltage 4.2 V coin cell. Impressively, larger scale pouch cell, it maintains over 81 its initial 1,400 1 C‐rate average Coulombic efficiency 99.6 %. This work represents significant advancement toward realization safe, sustainable, high‐performance PIBs.

Язык: Английский

Процитировано

14
Asymmetric ether solvents for high-rate lithium metal batteries DOI
Il Rok Choi, Yuelang Chen, Ajit Shah

и другие.

Nature Energy, Год журнала: 2025, Номер unknown

Опубликована: Фев. 14, 2025

Язык: Английский

Процитировано

1
Non‐Fluorinated Cyclic Ether‐Based Electrolyte with Quasi‐Conjugate Effect for High‐Performance Lithium Metal Batteries DOI
Xiao Zhu, Jiawei Chen, Gaopan Liu

и другие.

Angewandte Chemie International Edition, Год журнала: 2024, Номер 64(1)

Опубликована: Авг. 29, 2024

Fluorinated ether-based electrolytes are commonly employed in lithium metal batteries (LMBs) to attenuate the coordination ability of ether solvents with Li

Язык: Английский

Процитировано

5
Modulating Interfacial Solvation via Ion Dipole Interactions for Low‐Temperature and High‐Voltage Lithium Batteries DOI Open Access

Ping Liang,

Jinhan Li,

Dong Yang

и другие.

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

Опубликована: Ноя. 4, 2024

Extending the stability of ether solvents is pivotal for developing low-temperature and high-voltage lithium batteries. Herein, we elucidate oxidation behavior tetrahydrofuran with ternary BF

Язык: Английский

Процитировано

5
Progresses on advanced electrolytes engineering for high-voltage lithium metal batteries DOI
S.H. Dai,

Wenqiang Fang,

Tianxiang Wang

и другие.

Chemical Engineering Journal, Год журнала: 2024, Номер 500, С. 157269 - 157269

Опубликована: Ноя. 1, 2024

Язык: Английский

Процитировано

4
A Tetrahydropyran‐Based Weakly Solvating Electrolyte for Low‐Temperature and High‐Voltage Lithium Metal Batteries DOI Open Access

Zezhuo Li,

Yaqi Liao, Haijin Ji

и другие.

Advanced Energy Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 17, 2024

Abstract Ether‐based electrolytes show great potential in low‐temperature lithium metal batteries (LMBs) for their low viscosity and decent reduction stability. However, conventional ethers with multidentate chelate sites suffer from oxidation stability high desolvation energy barrier due to the strong coordination between oxygen Li + . Herein, cyclic tetrahydropyran (THP) a unidentate site is designed as solvent, fluoroethylene carbonate (FEC) nitrate (LiNO 3 ) serve additives LMBs. The strain effect endow THP weak affinity ions, which accelerates process induces anion‐derived electrode/electrolyte interface at temperature. formed inorganic‐rich further improves expedites interfacial ion transportation. As result, assembled Li‐LiNi 0.8 Mn 0.1 Co O 2 (NMC811) cell stably cycles 87% capacity retention after 100 −40 °C 4.5 V. 2.7 Ah Li‐NMC811 pouch an density of 403 Wh kg −1 delivers 53% room‐temperature −50 °C. This work reveals that regulating solvents can well optimize realize

Язык: Английский

Процитировано

4
Optimal Blend Between Fluorinated Esters and Fluorinated Ether for High-Performance Lithium-Ion Cells at High Voltage DOI Open Access
Yong Sheng, Bo Liu, Junjiang He

и другие.

Materials, Год журнала: 2025, Номер 18(2), С. 274 - 274

Опубликована: Янв. 9, 2025

An experimental investigation is conducted to identify the optimal blend of fluoroethylene carbonate (FEC), 3,3,3-trifluoropropylene (TFEC), and various fluorinated ethers, including 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether (HFE), 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl (TTE), bis(2,2,2-trifluoroethyl) (BTE), enhance performances lithium-ion cells at high voltage. The cell incorporating TTE exhibits a significantly superior capacity for retention after long-term cycling 4.5 V, which might be attributed improved kinetics lithium ions generation thin, reliable, inorganic-rich electrode-electrolyte interface. This enhancement facilitates greater ion mobility within cell, while effectively suppressing active loss side reactions between electrodes electrolytes elevated voltages. Furthermore, with demonstrates rate capability high-temperature performance. As result inherent safety characteristics these all-fluorinated electrolytes, using formulations show excellent properties under typical abuse scenarios. Except temperatures, none undergo thermal runaway when subjected mechanical or electrical abuse, there are minimal differences in performance across different formulations. Considering electrochemical performance, safety, cost factors, it can concluded that more cooperate FEC TFEC high-performance high-voltage cells.

Язык: Английский

Процитировано

0