Co-Solvent Electrolyte Engineering for Stable Anode-Free Zinc Metal Batteries

Journal of the American Chemical Society, Год журнала: 2022, Номер 144(16), С. 7160 - 7170

Опубликована: Апрель 18, 2022

Anode-free metal batteries can in principle offer higher energy density, but this requires them to have extraordinary Coulombic efficiency (>99.7%). Although Zn-based are promising for stationary storage, the parasitic side reactions make anode-free difficult achieve practice. In work, a salting-in-effect-induced hybrid electrolyte is proposed as an effective strategy that enables both highly reversible Zn anode and good stability compatibility toward various cathodes. The as-prepared also work well under wide temperature range (i.e., from -20 50 °C). It demonstrated presence of propylene carbonate, triflate anions involved Zn2+ solvation sheath structure, even at low salt concentration (2.14 M). unique structure results reduction anions, thus forming hydrophobic solid interphase. waterproof interphase along with decreased water activity effectively prevents reactions, ensuring stable unprecedented (99.93% over 500 cycles 1 mA cm-2). More importantly, we design battery exhibits excellent cycling (80% capacity retention after 275 0.5 This provides universal co-solvent electrolytes batteries.

Язык: Английский

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Stable Aqueous Anode‐Free Zinc Batteries Enabled by Interfacial Engineering

Advanced Functional Materials, Год журнала: 2021, Номер 31(26)

Опубликована: Май 7, 2021

Abstract Anode‐free zinc batteries (AFZBs) are proposed as promising energy storage systems due to their high density, inherent safety, low cost, and simplified fabrication process. However, rapid capacity fading caused by the side reactions between in situ formed metal anode electrolyte hinders practical applications. To address these issues, aqueous AFZBs enabled engineering form a stable interphase designed. By introducing multifunctional fluoride (ZnF 2 ) additive into electrolyte, F‐rich interfacial layer is formed. This can not only regulate growth orientation of crystals, but also serve an inert protection against such H generation. Based on synergy effects, deposition/dissolution with reversibility (Coulombic efficiency > 99.87%) cycling performance up 600 h achieved optimized ZnF . With this life significantly improved. The work may initiate research be useful for design energy, low‐cost power sources.

Язык: Английский

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Recent Advances and Perspectives of Zn‐Metal Free “Rocking‐Chair”‐Type Zn‐Ion Batteries

Advanced Energy Materials, Год журнала: 2020, Номер 11(5)

Опубликована: Дек. 18, 2020

Abstract In the past decades, world has witnessed successful commercialization of “rocking‐chair”‐type lithium‐ion batteries with lithium metal free anodes. Owing to their safe, green, easy manufacturing, and cost‐efficiency characteristics, rechargeable zinc have recently received more attention. However, practical application Zn is hampered mainly by dendritic growth anode, which leads poor Coulombic efficiency, hazards, various side reactions. Herein, emerging Zn‐ion are systemically reviewed host anodes instead As an introduction, fundamental principles, advantages, challenges discussed. Subsequently, design principles recent advances cathode, electrolyte for “rocking‐chair” summarized. To conclude, perspectives on future presented. It hoped that this review may provide alternative directions batteries.

Язык: Английский

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From Lithium‐Metal toward Anode‐Free Solid‐State Batteries: Current Developments, Issues, and Challenges

Advanced Functional Materials, Год журнала: 2021, Номер 31(51)

Опубликована: Сен. 13, 2021

Abstract The development of rechargeable batteries with high‐energy density is critical for future decarbonization transportation. Anode‐free Li‐ion batteries, using a bare current collector at the anode side without any excess Li, provide highest volumetric energy ( > 1500 Wh L −1 ) among all possible cell configurations. Furthermore, elimination material coating reduces consumption and greatly simplifies production, which in turn lowers costs. Although significant progress has been made recently by application modified collectors, optimized cycling parameters improved liquid electrolytes, insufficient efficiencies, dendritic growth during lithium plating lead to poor cycle life typically less than 100 cycles as well safety issues. Alternatively, very recent studies have demonstrated anode‐free solid‐state that combine benefits high configuration systems safety, exceeding 1000 cycles. This review provides an overview developments toward highlights issues challenges this nascent field. It concluded that, although major remain present, lessons learned fields electrolytes metal can accelerate practical relevance.

Язык: Английский

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Polymer‐Based Solid‐State Electrolytes for High‐Energy‐Density Lithium‐Ion Batteries – Review

Advanced Energy Materials, Год журнала: 2023, Номер 13(38)

Опубликована: Авг. 29, 2023

Abstract Portable electronic devices and electric vehicles have become indispensable in daily life caused an increasing demand for high‐performance lithium‐ion batteries (LIBs) with high‐energy‐density. This work compares the intrinsic characteristics Li + conduction mechanisms of various electrolytes, aiming at emphasizing their suitability high‐energy‐density LIBs. Among all polymer‐based solid‐state electrolytes (SSEs) are most promising candidates, as they demonstrate comprehensive properties. The advantages disadvantages commonly used polymer matrix materials SSEs discussed, along typical approaches to address limitations. As significant issues cycle stability, development related cathode/electrolyte interfacial contact wetting, electrochemical compatibility, LIBs employing SSEs, well anode/electrolyte chemical stability lithium dendrite suppression comprehensively reviewed analyzed. Finally, perspectives on future research directions developing highlighted building upon existing literature.

Язык: Английский

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Dealloying: An effective method for scalable fabrication of 0D, 1D, 2D, 3D materials and its application in energy storage

Nano Today, Год журнала: 2021, Номер 37, С. 101094 - 101094

Опубликована: Фев. 10, 2021

Язык: Английский

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Design of Robust, Lithiophilic, and Flexible Inorganic‐Polymer Protective Layer by Separator Engineering Enables Dendrite‐Free Lithium Metal Batteries with LiNi_0.8Mn_0.1Co_0.1O₂ Cathode

Small, Год журнала: 2021, Номер 17(13)

Опубликована: Март 10, 2021

Abstract As a promising candidate for the high energy density cells, practical application of lithium‐metal batteries (LMBs) is still extremely hindered by uncontrolled growth lithium (Li) dendrites. Herein, facile strategy developed that enables dendrite‐free Li deposition coating highly‐lithiophilic amorphous SiO microparticles combined with high‐binding polyacrylate acid (SiO@PAA) on polyethylene separators. A lithiated and PAA (lithiated‐SiO/PAA) protective layer synergistic flexible robust features formed metal anode via in situ reaction to offer outstanding interfacial stability during long‐term cycles. By suppressing formation dead random deposition, reducing side reaction, buffering volume changes dissolution, such realizes morphology anode. Furthermore, sufficient ionic conductivity, uniform lithium‐ion flux, interface adaptability guaranteed lithiated‐SiO acid. result, anodes display significantly enhanced cycling coulombic efficiency Li||Li Cu||Li cells. When composite separator applied full cell carbonate‐based electrolyte LiNi 0.8 Mn 0.1 Co O 2 cathode, it exhibits three times longer lifespan than control at current 5 C.

Язык: Английский

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Li-growth and SEI engineering for anode-free Li-metal rechargeable batteries: A review of current advances

Energy storage materials, Год журнала: 2023, Номер 57, С. 508 - 539

Опубликована: Фев. 26, 2023

Язык: Английский

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Two-dimensional MXenes for flexible energy storage devices

Energy & Environmental Science, Год журнала: 2023, Номер 16(10), С. 4191 - 4250

Опубликована: Янв. 1, 2023

The design strategies and internal mechanisms of MXene-based materials in flexible energy storage devices are comprehensively introduced. Besides, the current trends, limitations, future outlooks proposed.

Язык: Английский

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Robust Transport: An Artificial Solid Electrolyte Interphase Design for Anode‐Free Lithium‐Metal Batteries

Advanced Materials, Год журнала: 2022, Номер 35(20)

Опубликована: Дек. 27, 2022

One of the most challenging issues in practical implementation high-energy-density anode-free lithium-metal batteries (AFLMBs) is sharp capacity attenuation caused by mechanical degradation solid electrolyte interphase (SEI). However, developing an artificial SEI to address this issue remains a challenge due trade-off between ionic conductivity and robustness for general conducting films. In study, tenacious composite with integrated heterostructure lithium fluoride (LiF) phosphorus oxynitride (LiPON) prepared using co-sputtering approach achieve both high fracture toughness. The embedded LiF domain has extremely Young's modulus surface energy compared those bulk LiPON film, enabling significant increase toughness order magnitude. Most importantly, interface structure generates additional fast Li+ -transport pathways, providing higher than 10-6 S cm-1 . Consequently, significantly increases cycling lifetime corresponding AFLMBs >250%. This study highlights importance structural integrity provides suggestions designing viable materials high-performance AFLMBs.

Язык: Английский

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