Tailoring the Solvation Sheath of Cations by Constructing Electrode Front‐Faces for Rechargeable Batteries

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(34)

Published: April 9, 2022

Abstract Solvent molecules within the solvation sheath of cations (e.g., Li + , Na Zn 2+ ) are easily to be dehydrogenated especially when coupled with high‐voltage cathodes, and lead detrimental electrolytes decompositions which finally accelerate capacity decays rechargeable batteries. Tremendous efforts devoted tackle this long‐lasting issue. Among them, salt‐concentrated strategies frequently employed tailor improve stabilities electrolytes. However, cost challenges caused by adding extra dose expensive salts, additives/cosolvents in preparing highly concentrated electrolytes, hinder their further utilizations some extent. Introducing porous materials‐based electrode front‐faces on surface electrodes even dilute can transfer high‐energy‐state desolvated solvents from reactive nonconductive material surfaces, thus eliminate contact chances between materials, greatly reduce solvents‐related decomposition issues. Herein, recent advances using metal ions for batteries discussed. Finally, perspectives future opportunities constructing front‐face provided.

Language: Английский

---

Current Status and Future Perspective on Lithium Metal Anode Production Methods

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(13)

Published: Feb. 15, 2023

Abstract Lithium metal batteries (LMBs) are one of the most promising energy storage technologies that would overcome limitations current Li‐ion batteries, based on their low density (0.534 g cm −3 ), reduction potential (−3.04 V vs Standard Hydrogen Electrode) as well high theoretical capacities (3860 mAh −1 and 2061 ). The overall cell mass volume be reduced while both gravimetric volumetric densities greatly improved. Their electrochemical performance, however, is hampered by efficiency at continuous degradation, which related, among other factors, to properties lithium anode (LMA). Hence, production processing LMAs crucial obtain desired enable LMBs. Here, conventional method used for LMAs, combination extraction, electrowinning, extrusion, rolling processes, reviewed. Then, advances in different alternative methods can produce improve described, divided into vapor phase, liquid electrodeposition. Within this last method, anode‐less concept, approaches development advanced collectors illustrated, included.

Language: Английский

---

Tuning Interphase Chemistry to Stabilize High‐Voltage LiCoO₂Cathode Material via Spinel Coating

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(35)

Published: June 3, 2022

Cathode electrolyte interphases (CEIs) are critical to the cycling stability of high-voltage cathodes for batteries, yet their formation mechanism and properties remain elusive. Here we report that compositions CEIs largely controlled by abundant species in inner Helmholtz layer (IHL) can be tuned from material aspects. The IHL LiCoO2 (LCO) was found alter after charging, with a solvent-rich environment results fragile organic-rich CEIs. By passivated spinel Li4 Mn5 O12 coating, achieve an anion-rich thus enabling robust LiF-rich In situ microscopy reveals maintain mechanical integrity at 500 °C, sharp contrast which undergo severe expansion subsequent voids/cracks cathode. As result, spinel-coated LCO exhibits high specific capacity 194 mAh g-1 0.05 C retention 83 % 300 cycles 0.5 C. Our work sheds new light on modulating advanced lithium-ion batteries.

Language: Английский

---

Molecular design of a metal–organic framework material rich in fluorine as an interface layer for high-performance solid-state Li metal batteries

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 451, P. 138819 - 138819

Published: Aug. 28, 2022

Language: Английский

---

Tactics to optimize conversion-type metal fluoride/sulfide/oxide cathodes toward advanced lithium metal batteries

Nano Research, Journal Year: 2023, Volume and Issue: 16(6), P. 8173 - 8190

Published: Feb. 10, 2023

Language: Английский

---

A 700 W⋅h⋅kg⁻¹ Rechargeable Pouch Type Lithium Battery

Chinese Physics Letters, Journal Year: 2023, Volume and Issue: 40(4), P. 048201 - 048201

Published: March 1, 2023

High-energy-density rechargeable lithium batteries are being pursued by researchers because of their revolutionary potential nature. Current advanced practical lithium-ion have an energy density around 300 W⋅h⋅kg −1 . Continuing to increase the a higher level could lead major explosion development in some fields, such as electric aviation. Here, we manufactured pouch-type with both gravimetric 711.3 and volumetric 1653.65 W⋅h⋅L This is achieved through use high-performance battery materials including high-capacity lithium-rich manganese-based cathode thin metal anode high specific energy, combined extremely process technologies high-loading electrode preparation lean electrolyte injection. In this material system, structural stability widened charge/discharge voltage range deposition/dissolution behavior interfacial modified studied.

Language: Английский

---

High-Efficiency Lithium-Ion Transport in a Porous Coordination Chain-Based Hydrogen-Bonded Framework

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(18), P. 10149 - 10158

Published: April 25, 2023

Fast and selective Li+ transport in solid plays a key role for the development of high-performance solid-state electrolytes (SSEs) lithium metal batteries. Porous compounds with tunable pathways are promising SSEs, but comprehensive performances terms kinetics, electrochemical stability window, interfacial compatibility difficult to be achieved simultaneously. Herein, we report porous coordination chain-based hydrogen-bonded framework (NKU-1000) containing arrayed electronegative sites transport, exhibiting superior conductivity 1.13 × 10-3 S cm-1, high transfer number 0.87, wide window 5.0 V. The assembled battery NKU-1000-based SSE shows discharge capacity 94.4% retention after 500 cycles can work over temperature range without formation dendrites, which derives from linear hopping that promote uniformly high-rate flux flexible structure buffer structural variation during transport.

Language: Английский

---

Achieving High‐Power and Dendrite‐Free Lithium Metal Anodes via Interfacial Ion‐Transport‐Rectifying Pump

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(12)

Published: Feb. 2, 2023

Abstract Metallic lithium is a fascinating anode for the next‐generation energy‐dense rechargeable batteries owing to highest theoretical specific capacity and lowest electrochemical potential. Nevertheless, sluggish desolvation kinetics notorious dendritic growth hinder its performance safe operation. Herein, an interlamellar Li + conductor of Ag‐montmorillonite (AMMT) proposed as interfacial ion‐transport‐rectifying pump induce rapid reversible plating/stripping metal. Joint experimental computational analyses reveal that AMMT with negative charge layers inherent channels can lower energy boost transport. The resultant endowed low nucleation barrier (22.2 mV) dendrite‐free features, leading high density (8 mA cm ‐2 ) long lifespan (2500 h). Moreover, corresponding Li||LiFePO 4 achieve steady circulation (500 cycles@82%, 1 C) N/P ratio. This strategy offers fresh insight into constructing robust multifunctional electrolyte/Li interface metal batteries.

Language: Английский

---

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

Advanced Science, Journal Year: 2023, Volume and Issue: 10(23)

Published: June 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.

Language: Английский

---

From Liquid to Solid-State Lithium Metal Batteries: Fundamental Issues and Recent Developments

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 16(1)

Published: Nov. 20, 2023

The widespread adoption of lithium-ion batteries has been driven by the proliferation portable electronic devices and electric vehicles, which have increasingly stringent energy density requirements. Lithium metal (LMBs), with their ultralow reduction potential high theoretical capacity, are widely regarded as most promising technical pathway for achieving batteries. In this review, we provide a comprehensive overview fundamental issues related to reactivity migrated interfaces in LMBs. Furthermore, propose improved strategies involving interface engineering, 3D current collector design, electrolyte optimization, separator modification, application alloyed anodes, external field regulation address these challenges. utilization solid-state electrolytes can significantly enhance safety LMBs represents only viable approach advancing them. This review also encompasses variation design transition from liquid solid electrolytes. Particularly noteworthy is that introduction SSEs will exacerbate differences electrochemical mechanical properties at interface, leading increased inhomogeneity-a critical factor contributing failure all-solid-state lithium Based on recent research works, perspective highlights status developing high-performance

Language: Английский

---