Disordered materials for high-performance lithium-ion batteries: A review

Nano Energy, Journal Year: 2024, Volume and Issue: 121, P. 109250 - 109250

Published: Jan. 3, 2024

Disordered materials (DMs) have become promising in the advancement of lithium-ion batteries (LIBs). Their disordered, open structure is conductive to facilitate efficiency storage. DMs with tunable compositions also possess abundant defects that can interact Li+, further enhancing their electrochemical performances LIBs. Yet, revealing structural origin superior properties DM-based LIBs remains a challenge. In this article, we review recent advances development components for LIBs, such as anodes, cathodes, coating layers, and solid-state electrolytes. We describe primary preparation characterization methods utilized DMs, while describing mechanisms involved DM synthesis. This article addresses correlation between performances. Moreover, elucidate challenges future perspectives summarize key advantages LIB performance over crystalline counterparts, providing insights developing through tailored development.

Language: Английский

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Strategies to regulate the interface between Li metal anodes and all-solid-state electrolytes

Materials Chemistry Frontiers, Journal Year: 2024, Volume and Issue: 8(6), P. 1421 - 1450

Published: Jan. 1, 2024

In this review, the problems of interface between lithium metal anodes and all-solid-state electrolytes are explored modification strategies to solve these summarized.

Language: Английский

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Anion‐modulated Ion Conductor with Chain Conformational Transformation for stabilizing Interfacial Phase of High‐Voltage Lithium Metal Batteries

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(19)

Published: Feb. 23, 2024

Abstract In solid‐state lithium metal batteries (SSLMBs), the inhomogeneous electrolyte‐electrode interphase layer aggravates interfacial stability, leading to discontinuous ion/charge transport and continuous degradation of electrolyte. Herein, we constructed an anion‐modulated ionic conductor (AMIC) that enables in situ construction electrolyte/electrode interphases for high‐voltage SSLMBs by exploiting conformational transitions under multiple interactions between polymer salt anions. Anions modulate decomposition behavior supramolecular poly (vinylene carbonate) (PVC) at electrode interface changing spatial conformation chains, which further enhances ion stabilizes morphology. addition, AMIC weakens “Li + ‐solvation” increases Li vehicle sites, thereby enhancing lithium‐ion number ( t =~0.67). Consequently, || LiNi 0.8 Co 0.1 Mn O 2 cell maintains about 85 % capacity retention Coulombic efficiency >99.8 200 cycles a charge cut‐off voltage 4.5 V. This study provides new understanding anions regulating chain segment electrolyte (SPE) highlights importance environment phases conduction.

Language: Английский

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Enhanced Air Stability and Li Metal Compatibility of Li‐Argyrodite Electrolytes Triggered by In₂O₃ Co‐Doping for All‐Solid‐State Li Metal Batteries

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(18)

Published: Jan. 24, 2024

Abstract Sulfide solid electrolytes (SSEs) have become an ideal candidate material for all‐solid‐state Li metal batteries (ASSLMBs) because of their high ionic conductivity. However, the vile incompatibility and poor air stability SSEs barriers commercial application. Herein, novel 6+2x P 1−x In x S 5−1.5x O 1.5x Cl (0 ≤ 0.1) are synthesized via co‐doped 6 PS 5 Cl. By regulating substitution concentration, prepared 6.12 0.92 0.08 4.88 0.12 exhibits considerable conductivity (2.67 × 10 −3 cm −1 ) enhanced stability. Based on first‐principles density functional theory (DFT) calculation, it is predicted that 3+ replaces 5+ to form InS 4 5− tetrahedron 2− 3 4− group. The mechanism enhancing by In, co‐substituting clarified. More remarkably, formation Li‐In alloys induced 6.16 electrolyte at anode interface beneficial reducing migration barrier Li‐ions, promoting remote migration, Li/SSEs interface. optimized shows superior critical current (1.4 mA −2 satisfactory dendrite inhibition (stable cycle 0.1 over 3000 h). ASSLMBs with reveal This work emphasizes co‐doping address redox issues sulfide electrolytes.

Language: Английский

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Interfacial stability between sulfide solid electrolytes and lithium anodes: Challenges, strategies and perspectives

Nano Energy, Journal Year: 2024, Volume and Issue: 123, P. 109361 - 109361

Published: Feb. 6, 2024

Language: Английский

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Directing Fluorinated Solid Electrolyte Interphase by Solubilizing Crystal Lithium Fluoride in Aprotic Electrolyte for Lithium Metal Batteries

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(16)

Published: Feb. 21, 2024

Abstract Lithium fluoride (LiF) facilitates robust and fast‐ion‐transport solid electrolyte interphase (SEI) in lithium metal batteries. Fluorinated solvents/salts are ubiquitously employed to introduce LiF into SEI through electrochemical decomposition, but this approach is usually at the expense of their continuous consumption. A direct fluorinate that employs crystal limited by its poor solubility current battery formulation. Dissolving high‐dielectric‐constant solvents, like ethylene carbonate (EC) nearly neglected. Herein, feasibility directly fluorinating addition aprotic with assistance EC verified, mechanisms fluorination anti‐acidification explored. The dissolved encapsulated solvent‐/salt‐derived organic skins promote fluorinated SEI. Meanwhile, presence alters hazardous thermodynamic equilibrium, suppressing production acid species mitigate acidification degradation. Such collective benefits yield a capacity retention ratio ≈88% after 150 cycles high areal (4.5 mAh cm −2 ) Li||NCM622 cells. This facile effective contributes an in‐depth understanding formation rational design well‐performing

Language: Английский

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Green mechanochemical Li foil surface reconstruction toward long-life Li–metal pouch cells

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 17(1), P. 260 - 273

Published: Nov. 16, 2023

A green mechanochemical surface treatment strategy endows practical Li metal pouch cells with excellent electrochemical performance, achieving high energy density, stable cycle performance and security.

Language: Английский

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Highly Soluble Lithium Nitrate-Containing Additive for Carbonate-Based Electrolyte in Lithium Metal Batteries

ACS Energy Letters, Journal Year: 2023, Volume and Issue: 8(5), P. 2440 - 2446

Published: May 3, 2023

While lithium nitrate (LiNO3) is widely utilized as an electrolyte additive in ether-based electrolytes for stable deposition, use of LiNO3 conventional carbonate-based very limited due to the poor solubility electrolytes. Herein, a new LiNO3-containing which soluble electrolytes, 1-trimethylsilyl imidazole adduct (TMSILN), has been synthesized by simple method. The electrochemical performance significantly improved Li/Li and NCM622/Li cells with TMSILN containing electrolyte. Our extensive investigations reveal that deposited metal additive-containing circular morphology thin (∼5 nm) surface film decomposition products such Li3N LiNxOy. can be ascribed favorable features SEI presence additive.

Language: Английский

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Modification of Carbonate Electrolytes for Lithium Metal Electrodes

ACS Energy Letters, Journal Year: 2023, Volume and Issue: 8(11), P. 4782 - 4793

Published: Oct. 22, 2023

Lithium metal anodes are crucial in moving toward high-energy-density lithium batteries for a variety of applications, but they suffer from an assortment safety issues and poor long-term cycling performance. The easiest way to address this is modify the currently used electrolytes order improve performance cell. Carbonate-based one few types solvents that not only participate solid electrolyte interphase (SEI) formation also stable up high potentials, making them ideal applications with high-voltage cathodes anodes. While current standard carbonate have performance, modifying by adjusting salt or including additives can lead significant improvements SEI generation battery longevity.

Language: Английский

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Interrelation Between External Pressure, SEI Structure, and Electrodeposit Morphology in an Anode‐Free Lithium Metal Battery

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 14(5)

Published: Nov. 27, 2023

Abstract The interrelation is explored between external pressure (0.1, 1, and 10 MPa), solid electrolyte interphase (SEI) structure/morphology, lithium metal plating/stripping behavior. To simulate anode‐free batteries (AF‐LMBs) analysis performed on “empty” Cu current collectors in standard carbonate electrolyte. Lower promotes organic‐rich SEI macroscopically heterogeneous, filament‐like Li electrodeposits interspersed with pores. Higher inorganic F‐rich more uniform denser film. A “seeding layer” of lithiated pristine graphene (pG@Cu) favors an anion‐derived electrodeposition, enabling extended electrochemical stability at a lower pressure. State‐of‐the‐art performance achieved 1MPa: pG‐enabled half‐cell stable after 300 h (50 cycles) 1 mA cm −2 rate −3 mAh capacity (17.5 µm plated/stripped), cycling Coulombic efficiency (CE) 99.8%. AF‐LMB cells high mass loading NMC622 cathode (21 mg ) undergo 200 cycles CE 99.4% C/5‐charge C/2‐discharge (1C = 178 g −1 ). Density functional theory (DFT) highlights the differences adsorption energy solvated‐Li + onto various crystal planes (100), (110), (111), versus lithiated/delithiated (0001) graphene, giving insight regarding role support surface energetics promoting heterogeneity.

Language: Английский

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