Recent advances in rational design for high-performance potassium-ion batteries

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(13), P. 7202 - 7298

Published: Jan. 1, 2024

The growing global energy demand necessitates the development of renewable solutions to mitigate greenhouse gas emissions and air pollution. To efficiently utilize yet intermittent sources such as solar wind power, there is a critical need for large-scale storage systems (EES) with high electrochemical performance. While lithium-ion batteries (LIBs) have been successfully used EES, surging price, coupled limited supply crucial metals like lithium cobalt, raised concerns about future sustainability. In this context, potassium-ion (PIBs) emerged promising alternatives commercial LIBs. Leveraging low cost potassium resources, abundant natural reserves, similar chemical properties potassium, PIBs exhibit excellent ion transport kinetics in electrolytes. This review starts from fundamental principles structural regulation PIBs, offering comprehensive overview their current research status. It covers cathode materials, anode electrolytes, binders, separators, combining insights full battery performance, degradation mechanisms,

Language: Английский

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Building better solid‐state batteries with silicon‐based anodes

Interdisciplinary materials, Journal Year: 2023, Volume and Issue: 2(4), P. 635 - 663

Published: July 1, 2023

Abstract Silicon (Si)‐based solid‐state batteries (Si‐SSBs) are attracting tremendous attention because of their high energy density and unprecedented safety, making them become promising candidates for next‐generation storage systems. Nevertheless, the commercialization Si‐SSBs is significantly impeded by enormous challenges including large volume variation, severe interfacial problems, elusive fundamental mechanisms, unsatisfied electrochemical performance. Besides, some unknown processes in Si‐based anode, electrolytes (SSEs), anode/SSE interfaces still needed to be explored, while an in‐depth understanding solid–solid chemistry insufficient Si‐SSBs. This review aims summarize current scientific technological advances insights into tackling promote deployment First, differences between various conventional liquid electrolyte‐dominated lithium‐ion (LIBs) with discussed. Subsequently, mechanical contact model, chemical reaction properties, charge transfer kinetics (mechanical–chemical kinetics) anode three different SSEs (inorganic (oxides) SSEs, organic–inorganic composite inorganic (sulfides) SSEs) systemically reviewed, respectively. Moreover, progress SSE‐based on aspects electrode constitution, three‐dimensional structured electrodes, external stack pressure highlighted, Finally, future research directions prospects development proposed.

Language: Английский

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Biomass-derived carbon-sulfur hybrids boosting electrochemical kinetics to achieve high potassium storage performance

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 661, P. 598 - 605

Published: Feb. 1, 2024

Language: Английский

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Conductive Metal–Organic Framework with Superior Redox Activity as a Stable High-Capacity Anode for High-Temperature K-Ion Batteries

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(10), P. 6753 - 6762

Published: Feb. 27, 2024

High-temperature rechargeable batteries are essential for energy storage in elevated-temperature situations. Due to the resource abundance of potassium, high-temperature K-ion drawing increasing research interest. However, raising working temperature would aggravate chemical and mechanical instability KIB anode, resulting very fast capacity fading, especially when high is pursued. Here, we demonstrated that a porous conductive metal–organic framework (MOF), which constructed by N-rich aromatic molecules CuO4 units via π–d conjugation, could provide multiple accessible redox-active sites promised robust structure stability efficient potassium at temperatures. Even 60 °C, this MOF anode deliver initial (455 mAh g–1), impressive rate, extraordinary cyclability (96.7% retention 1600 cycles), much better than those reported anodes. The mechanistic study revealed C═N groups contributed abundant sites; synergistic effect conjugated character reticular architecture facilitated K+/e– transport ensured an insoluble electrode with small volume deformation, thus achieving stable high-capacity storage.

Language: Английский

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Significantly enhanced ion‐migration and sodium‐storage capability derived by strongly coupled dual interfacial engineering in heterogeneous bimetallic sulfides with densified carbon matrix

SusMat, Journal Year: 2024, Volume and Issue: 4(3)

Published: April 28, 2024

Abstract The development of highly efficient sodium‐ion batteries depends critically on the successful exploitation advanced anode hosts that is capable overcoming sluggish reaction kinetics while also withstanding severe structural deformation triggered by large radius Na + ‐insertion. Herein, a hierarchically hybrid material with hetero‐Co 3 S 4 /NiS hollow nanosphere packaged into densified N‐doped carbon matrix (Co /NiS@N‐C) was designed and fabricated utilizing CoNi‐glycerate as self‐sacrifice template, making utmost synergistic effect strong electric field rich active‐sites together outer‐carbon scaffolds remarkable electronic conductivity robust mechanical toughness. As anticipated, as‐fabricated Co /NiS@N‐C affords specific capacity, prolonged cycle lifespan up to 2 400 cycles an only 0.05% fading each at 20.0 A g −1 , excellent rate feature (354.9 mAh 30.0 ), one best performances for most existing /NiS‐based anodes. Ex situ characterizations in tandem theoretical analysis demonstrate reversible insertion‐conversion mechanism initially proceeding de‐/intercalation superior heterogeneous interfacial behavior ‐adsorption ability. Further, full cell capacitor based exhibit impressive electrochemical characteristics cycling performance capability, showcasing its outstanding feasibility toward practical use.

Language: Английский

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Breaking Low-Strain and Deep-Potassiation Trade-Off in Alloy Anodes via Bonding Modulation for High-Performance K-Ion Batteries

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(7), P. 4752 - 4761

Published: Feb. 9, 2024

Alloy anode materials have garnered unprecedented attention for potassium storage due to their high theoretical capacity. However, the substantial structural strain associated with deep potassiation results in serious electrode fragmentation and inadequate K-alloying reactions. Effectively reconciling trade-off between low-strain deep-potassiation alloy anodes poses a considerable challenge larger size of K-ions compared Li/Na-ions. In this study, we propose chemical bonding modulation strategy through single-atom modification address volume expansion during potassiation. Using black phosphorus (BP) as representative generalizing other anodes, established robust P–S covalent network via sulfur doping. This exhibits sustained stability across discharge–charge cycles, elevating modulus K–P compounds by 74%, effectively withstanding induced process. Additionally, reduces formation energies phosphides, facilitating deeper BP anode. As result, modified reversible capacity extended operational lifespan, coupled areal work introduces new perspective on overcoming development high-energy stable potassium-ion batteries.

Language: Английский

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Surface chemistry of electrode materials toward improving electrolyte‐wettability: A method review

InfoMat, Journal Year: 2024, Volume and Issue: unknown

Published: June 19, 2024

Abstract The electrolyte‐wettability at electrode material/electrolyte interface is a critical factor that governs the fundamental mechanisms of electrochemical reaction efficiency and kinetics materials in practical energy storage. Therefore, design construction material surfaces with improved has been demonstrated to be important optimize storage performance material. Here, we comprehensively summarize advanced strategies key progresses surface chemical modification for enhancing materials, including polar atom doping by post treatment, introducing functional groups, grafting molecular brushes, coating situ reaction. Specifically, basic principles, characteristics, challenges these improving are discussed detail. Finally, potential research directions regarding characterization techniques future provided. This review not only insights into but also provides strategic guidance optimization pursuing high‐performance devices. image

Language: Английский

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Heteroatoms‐Doped Mesoporous Carbon Nanosheets with Dual Diffusion Pathways for Highly Efficient Potassium Ion Storage

Small, Journal Year: 2024, Volume and Issue: 20(27)

Published: Jan. 26, 2024

Abstract The high potassization/depotassization energy barriers and lack of efficient ion diffusion pathways are two serious obstacles for carbon‐based materials to achieve satisfactory potassium storage performance. Herein, a facile controllable one‐step exfoliation‐doping‐etching strategy is proposed construct heteroatoms (N, O, S)‐doped mesoporous few‐layer carbon nanosheets (NOS‐C). mixed molten salts KCl/K 2 SO 4 innovatively used as the exfoliators, dopants, etching agents, which enable NOS‐C with expanded interlayer spacing uniformly distributed mesopores adjusted electronic structure surrounding atoms, contributing dual (vertical horizontal) K‐ion pathways, low abundant active sites. Thus, NOS anodes reversible capacity 516.8 mAh g −1 at 0.05 A , superior rate capability 202.8 5 excellent long‐term cyclic stability, their practical application potential demonstrated by assembled potassium‐ion full batteries. Moreover, surface‐interlayer synergetic K + mechanism revealed combined theoretical experimental approach including in situ EIS, Raman, ex XPS, SEM analysis. unique structural engineering provide new pathway devices even beyond.

Language: Английский

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Regulating the Pore Structure of Activated Carbon by Pitch for High-Performance Sodium-Ion Storage

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(14), P. 17553 - 17562

Published: March 27, 2024

The pore structure of carbon anodes plays a crucial role in enhancing the sodium storage capacity. Designing more confined pores is accepted as an effective strategy. However, current design strategies for fail to achieve both high capacity and initial Coulombic efficiency (ICE) simultaneously. Herein, we develop strategy utilizing repeated impregnation precarbonization method liquid pitch regulate activated (AC) material. Driven by capillary coalescence, impregnated into AC, which reduces specific surface area During carbonization process, numerous with diameters less than 1 nm are formed, resulting improved ICE anode. Moreover, ordered layers derived from also enhance electrical conductivity, thereby improving rate capability as-obtained anodes. This enables fabricated material (XA-4T-1300) have 91.1% 383.0 mA h g–1 at 30 g–1. retention 95.5% after 300 cycles A study proposes practical approach adjust microcrystalline structures performance sodium-ion materials.

Language: Английский

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Facile synthesis of CuMn2O4 nanoparticle supported on MoS2 nanorods via hydrothermal route for supercapacitor application

Materials Chemistry and Physics, Journal Year: 2024, Volume and Issue: 322, P. 129517 - 129517

Published: May 27, 2024

Language: Английский

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