Metallic Particles‐Induced Surface Reconstruction Enabling Highly Durable Zinc Metal Anode

Advanced Functional Materials, Год журнала: 2023, Номер 33(38)

Опубликована: Июнь 4, 2023

Abstract Aqueous zinc batteries usher in a renaissance due to their intrinsic security and cost effectiveness, bespeaking vast application foreground for large‐scale energy storage system. However, uncontrolled dendrite growth along with hydrogen evolution severely restricts its reversibility stability practical application. Herein, the surface of Zn metal is reconstructed metallic particles (In, Sn, In 0.2 Sn 0.8 ) diminish defects regulate deposition behavior. The alloyed In–Sn greatly activates lower adsorption barrier expedite plating kinetics confine aggregation. Dense uniform on significantly prevents substrate from dendrites catastrophic damage. Meanwhile, alloy layer embodies high overpotential, ensuring stripping efficiency anode. Consequently, realizes long‐term lifespan up 1800 h low polarization (12 mV) at condition 1 mA cm −2 mAh . When paired sodium vanadate (NVO) cathode, full cell steady operates high‐capacity retention 94.0% after 5000 cycles 5 A g −1 This study provides new insights into surface‐defects dependent process offers guide constructing stable dendrite‐free growth.

Язык: Английский

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Electrochemically and Thermally Stable Inorganics–Rich Solid Electrolyte Interphase for Robust Lithium Metal Batteries

Advanced Materials, Год журнала: 2023, Номер 36(1)

Опубликована: Сен. 9, 2023

Abstract Severe dendrite growth and high‐level activity of the lithium metal anode lead to a short life span poor safety, seriously hindering practical applications batteries. With trisalt electrolyte design, an F‐/N‐containing inorganics–rich solid interphase on is constructed, which electrochemically thermally stable over long‐term cycles safety abuse conditions. As result, its Coulombic efficiency can be maintained 98.98% for 400 cycles. An 85.0% capacity retained coin‐type full cells with 3.14 mAh cm −2 LiNi 0.5 Co 0.2 Mn 0.3 O 2 cathode after 200 1.0 Ah pouch‐type 4.0 72 During thermal runaway tests cycled pouch cell, onset triggering temperatures were increased from 70.8 °C 117.4 100.6 153.1 °C, respectively, indicating greatly enhanced performance. This work gives novel insights into interface potentially paving way high‐energy‐density, long‐life‐span, safe

Язык: Английский

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Cyclopentylmethyl Ether, a Non‐Fluorinated, Weakly Solvating and Wide Temperature Solvent for High‐Performance Lithium Metal Battery

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(21)

Опубликована: Март 23, 2023

Abstract While recent work demonstrates the advantages of weakly solvating solvents in enhancing cyclability LMBs, both new designs and design strategies for high performance solvent, especially physicochemical properties, are still lacking. Here, we propose a molecular to tune power properties non‐fluorinated ether solvent. The resulting cyclopentylmethyl (CPME) have weak wide liquid‐phase temperature range. By optimizing salt concentration, CE is further promoted 99.4 %. Besides, improved electrochemical Li−S battery CPME‐based electrolytes obtained at −20 °C. Li||LFP (17.6 mg cm −2 ) with developed electrolyte maintains >90 % original capacity over 400 cycles. Our concept solvent molecule provides promising pathway window high‐energy‐density LMBs.

Язык: Английский

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40 Years of Low‐Temperature Electrolytes for Rechargeable Lithium Batteries

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(37)

Опубликована: Май 15, 2023

Rechargeable lithium batteries are one of the most appropriate energy storage systems in our electrified society, as virtually all portable electronic devices and electric vehicles today rely on chemical stored them. However, sub-zero Celsius operation, especially below -20 °C, remains a huge challenge for greatly limits their application extreme environments. Slow Li+ diffusion charge transfer kinetics have been identified two main origins poor performance RLBs under low-temperature conditions, both strongly associated with liquid electrolyte that governs bulk interfacial ion transport. In this review, we first analyze kinetic behavior failure mechanism from an standpoint. We next trace history electrolytes past 40 years (1983-2022), followed by comprehensive summary research progress well introducing state-of-the-art characterization computational methods revealing underlying mechanisms. Finally, provide some perspectives future particular emphasis analysis practical application.

Язык: Английский

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Toward Practical Solid‐State Polymer Lithium Batteries by In Situ Polymerization Process: A Review

Advanced Energy Materials, Год журнала: 2023, Номер 13(30)

Опубликована: Июнь 25, 2023

Abstract Although there are various strategies for solid‐state polymer lithium batteries (SSPLBs) manufacturing, the most promising is in situ polymerization process. The process inherits good liquid electrolyte/electrode interfacial contact and compatible with existing lithium‐ion manufacturing processes, making it easy to achieve scale‐up production. However, of current studies on based lab‐level coin cells, while practical pouch cells much less studied. There a huge difference between SSPLBs SSPLBs. Here, as complement reports reviews, systematic review challenges design principles fabricating provided enable comprehensive understanding strategic guidance applications. This thoroughly discusses recent advances regarding fabrication using presents future outlook by processes. Furthermore, critical issues electrode materials highlighted during process, an attempt made call more attention performance

Язык: Английский

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Towards Practical Application of Li–S Battery with High Sulfur Loading and Lean Electrolyte: Will Carbon-Based Hosts Win This Race?

Nano-Micro Letters, Год журнала: 2023, Номер 15(1)

Опубликована: Июнь 7, 2023

Abstract As the need for high-energy–density batteries continues to grow, lithium-sulfur (Li–S) have become a highly promising next-generation energy solution due their low cost and exceptional density compared commercially available Li-ion batteries. Research into carbon-based sulfur hosts Li–S has been ongoing over two decades, leading significant number of publications patents. However, commercialization yet be realized. This can attributed, in part, instability Li metal anode. even when considering just cathode side, there is still no consensus on whether will prove best industrialization Recently, controversy surrounding use materials as ideal practical applications under high loading lean electrolyte conditions. To address this question, it important review results research hosts, assess strengths weaknesses, provide clear perspective. systematically evaluates merits mechanisms various strategies developing host The covers structural design functional optimization detail, providing comprehensive understanding development hosts. also describes efficient machine learning methods investigating Finally, outlook section lists discusses current trends, challenges, uncertainties concludes by presenting our standpoint perspective subject.

Язык: Английский

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In‐Situ Constructing A Heterogeneous Layer on Lithium Metal Anodes for Dendrite‐Free Lithium Deposition and High Li‐ion Flux

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(11)

Опубликована: Янв. 14, 2023

Constructing efficient artificial solid electrolyte interface (SEI) film is extremely vital for the practical application of lithium metal batteries. Herein, a dense SEI film, in which lithiophilic Zn/Lix Zny are uniformly but nonconsecutively dispersed consecutive Li+ -conductors Lix SiOy , Li2 O and LiOH, constructed via situ reaction layered zinc silicate nanosheets Li. The can promote desolvation process solvated-Li+ regulate transfer ions. nonconsecutive metals polarized by internal electric field to boost ions, lower nucleation barrier. Therefore, low polarization ≈50 mV 750 h at 2.0 mA cm-2 symmetric cells, high capacity retention 99.2 % full cells with iron phosphate areal loading ≈13 mg achieved. This work offers new sights develop advanced alkali anodes energy storage.

Язык: Английский

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Integrated Gradient Cu Current Collector Enables Bottom‐Up Li Growth for Li Metal Anodes: Role of Interfacial Structure

Advanced Science, Год журнала: 2023, Номер 10(23)

Опубликована: Июнь 13, 2023

3D Cu current collectors have been demonstrated to improve the cycling stability of Li metal anodes, however, role their interfacial structure for deposition pattern has not investigated thoroughly. Herein, a series integrated gradient Cu-based are fabricated by electrochemical growth CuO nanowire arrays on foil (CuO@Cu), where structures can be readily controlled modulating dispersities arrays. It is found that constructed sparse and dense dispersion both disadvantageous nucleation metal, consequently fast dendrite growth. In contrast, uniform appropriate dispersity enables stable bottom associated with smooth lateral deposition, affording ideal bottom-up pattern. The optimized CuO@Cu-Li electrodes exhibit highly reversible including coulombic efficiency up ≈99% after 150 cycles long-term lifespan over 1200 h. When coupling LiFePO4 cathode, coin pouch full-cells deliver outstanding rate capability. This work provides new insight design toward high-performance anodes.

Язык: Английский

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Eco‐Friendly Tetrahydropyran Enables Weakly Solvating “4S” Electrolytes for Lithium‐Metal Batteries

Advanced Energy Materials, Год журнала: 2023, Номер 13(32)

Опубликована: Июль 6, 2023

Abstract The growth of lithium dendrites hinders the commercial applications lithium‐metal batteries. Electrolytes play a crucial role in influencing electrode/electrolyte interfacial chemistry. Traditional electrolytes adopt strongly solvating solvents to dissolve Li salts, creating an organic‐rich solid electrolyte interface (SEI). + conductivity and mechanical strength SEI are poor, so derived cannot effectively suppress dendrites. weakly (WSE) system can realize inorganic‐rich SEI, demonstrating improved compatibility with metal. However, design rules for WSE not clear. Here, four kinds “4S” (single salt single solvent) designed investigate thickness, pore volume, porosity revealed via reactive force field. results show heterocyclic symmetric tetrahydropyran has most suitable power best stability battery system. This research provides route bridging molecular thermodynamic chemistry gap.

Язык: Английский

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Anode‐Free Alkali Metal Batteries: From Laboratory to Practicability

Advanced Functional Materials, Год журнала: 2024, Номер 34(44)

Опубликована: Май 19, 2024

Abstract Anode‐free alkali metal batteries (AFAMBs) are regarded as the most promising candidates for next‐generation high‐energy systems owing to their high safety, energy density, and low cost. However, restricted supply at cathode, severe dendrite growth, unstable electrode‐electrolyte interface result in Coulombic efficiency severely short cycle life. The optimization strategies mainly based on laboratory‐level coin cells, but effectiveness practical‐level is rarely discussed. This review presents a comprehensive overview of recent developments challenges AFAMBs from laboratory toward practicability. First, advances, major challenges, systematically summarized. More significantly, given vast differences battery structures operating conditions, gap between particularly emphasized this review. In addition, failure mechanisms have been outlined key parameters affecting performance identified. Finally, insightful perspectives practical presented, aiming provide helpful guidance subsequent basic research promote large‐scale commercial applications AFAMBs.

Язык: Английский

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