Challenges of polymer electrolyte with wide electrochemical window for high energy solid‐state lithium batteries

InfoMat, Journal Year: 2023, Volume and Issue: 5(3)

Published: Jan. 16, 2023

Abstract With the rapid development of energy storage technology, solid‐state lithium batteries with high density, power and safety are considered as ideal choice for next generation devices. Solid electrolytes have attracted considerable attention key components batteries. Compared inorganic solid electrolytes, polymer better flexibility, machinability, more importantly, contact electrode, low interfacial impedance. However, its ionic conductivity, narrow electrochemical stability window (ESW), poor mechanical properties at room temperature limit practical applications. In recent years, many studies focused on improving conductivity electrolytes; however, few systematic reviews been conducted their ESWs. A electrolyte wide will aid battery operation a voltage, which can effectively improve density. Moreover, toward metal anode is also important. Therefore, this review summarizes progress ESW, discusses factors affecting ESW analyzes strategy to broaden from perspective molecular interaction, structural design, tuning. The trends windows presented. image

Language: Английский

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Mechanism understanding for stripping electrochemistry of Li metal anode

SusMat, Journal Year: 2021, Volume and Issue: 1(4), P. 506 - 536

Published: Dec. 1, 2021

Abstract The pursuit of sustainable energy has a great request for advanced storage devices. Lithium metal batteries are regarded as potential electrochemical system because the extremely high capacity and most negative lithium anode. Dead formed in stripping process significantly contributes to low efficiency short lifespan rechargeable batteries. This review displays critical on current research status about electrochemistry significance robust anode is emphasized. models different scenarios discussed. Specific attention paid understanding principles atom diffusion, reaction, ion diffusion solid electrolyte interphase (SEI), electron transfer with purpose strengthen insights into behavior electrode stripping. factors affecting processes corresponding solutions summarized categorized follows: surface physics, SEI, operational external factors. affords fresh explore design based comprehensive electrochemistry.

Language: Английский

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A Self-Supporting Covalent Organic Framework Separator with Desolvation Effect for High Energy Density Lithium Metal Batteries

ACS Energy Letters, Journal Year: 2022, Volume and Issue: 7(2), P. 885 - 896

Published: Feb. 2, 2022

Covalent organic frameworks (COF) displayed strong affinity between COF and Li+ in terms of previous works. However, the relationship solvent molecules electrolyte was exclusive. Herein, a self-supporting separator (TPB-BD(OH)2-COF) synthesized served as lithium metal batteries. The formation hydrogen bond network is due to interaction hydroxyl functional group (−OH) TPB-BD(OH)2-COF −OH···F −OH···O PF6–, EC EMC within sheath achieve desolvation process realize more aggregative electrolyte, thus reducing free side effects. Therefore, full cell assembled with superior cycling stability reversible capacity 114.3 mAh g–1 after 335 cycles at current density 1C 5 cm–2. Moreover, can perform well even extreme environments (temperature 60 °C).

Language: Английский

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Alloying Strategy for High-Performance Zinc Metal Anodes

ACS Energy Letters, Journal Year: 2022, Volume and Issue: 8(1), P. 457 - 476

Published: Dec. 9, 2022

Owing to the advantages of low cost, high energy density, and environment friendly, aqueous zinc ion batteries (AZIBs) are considered as promising storage devices. Inevitable dendrites, corrosion, passivation, hydrogen evolution reactions anodes have seriously hampered practical application AZIBs. To address above-mentioned issues, anode alloying is proposed an emerging modification strategy. Therefore, it essential systematically summarize obtained research results on strategies analyze new perspectives. Based presented studies anode, different improvement mechanisms described, such artificial interface alloy protective layer, electrostatic shielding effect, heterogeneous seeds zincophilic sites, vertical plane matching strategy, etc. According synthesis methods action, recent advances been summarized. Finally, potential development prospects for further upgrading presented.

Language: Английский

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Covalent Organic Frameworks and Their Derivatives for Better Metal Anodes in Rechargeable Batteries

ACS Nano, Journal Year: 2021, Volume and Issue: 15(8), P. 12741 - 12767

Published: Aug. 5, 2021

Metal anodes based on a plating/stripping electrochemistry such as metallic Li, Na, K, Zn, Ca, Mg, Fe, and Al are recognized promising anode materials for constructing next-generation high-energy-density rechargeable metal batteries owing to their low electrochemical potential, high theoretical specific capacity, superior electronic conductivity, etc. However, inherent issues chemical reactivity, severe growth of dendrites, huge volume changes, unstable interface largely impede practical application. Covalent organic frameworks (COFs) derivatives emerging multifunctional have already well addressed the in past several years due abundant metallophilic functional groups, special inner channels, controllable structures. COFs can solve by interfacial modification, homogenizing ion flux, acting nucleation seeds, reducing corrosion anodes, so on. Nevertheless, related reviews still absent. Here we present detailed review batteries. Meanwhile, some outlooks opinions put forward. We believe catch eyes relevant researchers supply inspiration future research.

Language: Английский

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Layered oxide cathodes for sodium‐ion batteries: From air stability, interface chemistry to phase transition

InfoMat, Journal Year: 2023, Volume and Issue: 5(6)

Published: May 8, 2023

Abstract Sodium‐ion batteries (SIBs) are considered as a low‐cost complementary or alternative system to prestigious lithium‐ion (LIBs) because of their similar working principle LIBs, cost‐effectiveness, and sustainable availability sodium resources, especially in large‐scale energy storage systems (EESs). Among various cathode candidates for SIBs, Na‐based layered transition metal oxides have received extensive attention relatively large specific capacity, high operating potential, facile synthesis, environmental benignity. However, there series fatal issues terms poor air stability, unstable cathode/electrolyte interphase, irreversible phase that lead unsatisfactory battery performance from the perspective preparation application, outside inside oxide cathodes, which severely limit practical application. This work is meant review these critical problems associated with cathodes understand fundamental roots degradation mechanisms, provide comprehensive summary mainstream modification strategies including chemical substitution, surface modification, structure modulation, so forth, concentrating on how improve reduce interfacial side reaction, suppress realizing structural reversibility, fast Na + kinetics, superior electrochemical performance. The advantages disadvantages different discussed, insights into future challenges opportunities also presented. image

Language: Английский

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Will lithium‐sulfur batteries be the next beyond‐lithium ion batteries and even much better?

InfoMat, Journal Year: 2022, Volume and Issue: 4(9)

Published: Aug. 23, 2022

Abstract Lithium‐ion batteries (LIBs) are undoubtedly the current working‐horse in almost all portable electronic devices, electric vehicles, and even large‐scale stationary energy storage. Given problems faced by LIBs, a big question arises as to which battery(ies) would be “Beyond LIBs” batteries. Among front‐runners, lithium‐sulfur (LSBs) have been extensively pursued owing their intrinsically high density extremely low cost. Despite steady sometimes exciting progress reported on sulfur chemistry cell performance at laboratory scales over past decade, one of major bottlenecks is poor cyclability. In this perspective, we examine key challenges opportunities LSBs, well approaches materials, electrode/electrolyte integration levels that can taken transform LSBs from front‐runner real leading champion pursuit LIBs”. While new mechanistic insights very important, propose set near‐future research directions for both liquid solid state where currently on‐going parallel pursuits will converging. The “liquid current” gradually “solid future” expected commercialization coming decade. image

Language: Английский

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Air‐Stable Protective Layers for Lithium Anode Achieving Safe Lithium Metal Batteries

Small Methods, Journal Year: 2022, Volume and Issue: 7(1)

Published: Dec. 18, 2022

With markedly expansive demand in energy storage devices, rechargeable batteries will concentrate on achieving the high density and adequate security, especially under harsh operating conditions. Considering capacity (3860 mA h g-1 ) low electrochemical potential (-3.04 V vs standard hydrogen electrode), lithium metal is identified as one of most promising anode materials, which has sparked a research boom. However, intrinsically reactivity triggers repeating fracture/reconstruction process solid electrolyte interphase, side reactions with dendrites, detrimental to performance (LMBs). Even worse, when exposed air, suffer severe atmospheric corrosion, reaction moisture, leading grievous safety hazards. To settle these troubles, constructing air-stable protective layers (ASPLs) an effective solution. In this review, besides necessity ASPLs highlighted, modified design criteria, focusing enhancing chemical/mechanical stability controlling ion flux, are proposed. Correspondingly, current progress comprehensively summarized discussed. Finally, perspectives developing applicable anodes (LMAs) put forward. This review guides direction for practical use LMAs, further pushing evolution safe stable LMBs.

Language: Английский

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In Situ/Operando Raman Techniques in Lithium–Sulfur Batteries

Small Structures, Journal Year: 2022, Volume and Issue: 3(3)

Published: Feb. 6, 2022

Tremendous efforts have been made to fulfill the promises of lithium–sulfur (Li–S) battery as candidate for next‐generation energy storage devices. However, challenges such capacity degradation and dendrite growth still remain, hampering commercialization Li–S batteries. Different from conventional ion‐insertion‐based lithium battery, electrochemical chemical processes in cathode are based on extremely complex conversion reactions. Together with uncontrollable hostless deposition process anode side, future development batteries faces great difficulty requires deeper understanding fundamental mechanism. Herein, recent applications situ/operando Raman techniques monitoring real‐time variations summarized reveal reaction mechanism guide design strategies improving performances. The concepts advantages studies highlighted, explorations technique discussed, aiming accelerate progress practical applications.

Language: Английский

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Engineering Covalent Organic Frameworks Toward Advanced Zinc‐Based Batteries

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(24)

Published: March 16, 2024

Zinc-based batteries (ZBBs) have demonstrated considerable potential among secondary batteries, attributing to their advantages including good safety, environmental friendliness, and high energy density. However, ZBBs still suffer from issues such as the formation of zinc dendrites, occurrence side reactions, retardation reaction kinetics, shuttle effects, posing a great challenge for practical applications. As promising porous materials, covalent organic frameworks (COFs) derivatives rigid skeletons, ordered structures, permanent porosity, which endow them with application in ZBBs. This review, therefore, provides systematic overview detailing on COFs structure pertaining electrochemical performance ZBBs, following an depth discussion challenges faced by includes dendrites reactions at anode, well dissolution, structural change, slow effect cathode. Then, COF-correlated materials roles various are highlighted. Finally, outlined outlook future development is provided. The review would serve valuable reference further research into utilization

Language: Английский

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