Recent Advances and Perspectives of Lewis Acidic Etching Route: An Emerging Preparation Strategy for MXenes

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)

Published: March 15, 2023

Abstract Since the discovery in 2011, MXenes have become rising star field of two-dimensional materials. Benefiting from metallic-level conductivity, large and adjustable gallery spacing, low ion diffusion barrier, rich surface chemistry, superior mechanical strength, exhibit great application prospects energy storage conversion, sensors, optoelectronics, electromagnetic interference shielding biomedicine. Nevertheless, two issues seriously deteriorate further development MXenes. One is high experimental risk common preparation methods such as HF etching, other difficulty obtaining with controllable groups. Recently, Lewis acidic a brand-new strategy for MXenes, has attracted intensive attention due to its safety ability endow uniform terminations. However, comprehensive review etching method not been reported yet. Herein, we first introduce following four aspects: mechanism, terminations regulation, in-situ formed metals delamination multi-layered Further, applications MXene-based hybrids obtained by route sensors microwave absorption are carefully summarized. Finally, some challenges opportunities also presented.

Language: Английский

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Scalable spinning, winding, and knitting graphene textile TENG for energy harvesting and human motion recognition

Nano Energy, Journal Year: 2022, Volume and Issue: 107, P. 108137 - 108137

Published: Dec. 27, 2022

Language: Английский

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Manipulating charge-transfer kinetics and a flow-domain LiF-rich interphase to enable high-performance microsized silicon–silver–carbon composite anodes for solid-state batteries

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(11), P. 5395 - 5408

Published: Jan. 1, 2023

Silicon (Si) anode with high theoretical specific capacity (3579 mAh g−1) offers great promise for realizing high-energy solid-state batteries (SSBs). However, given Si’s huge volume variations during cycling, sluggish kinetics and unfavorable interface stability electrolyte (SSE), its practical potential in SSBs has not been fully exploited. Herein, we propose a design of highly-dense Ag nanoparticles decorated porous microsized Si, which is coated by thin-layer carbon (PS-Ag-C) working as high-performance boosting performance. Specifically, the mechanical stress at interface, originated from large change can be alleviated highly architecture. Meanwhile, continuous charge transfer within Si facilitated introduction nanoparticles, thin layer as-formed Ag-Li alloys, contributes to high-rate capability stable cycling Furthermore, coupled poly (vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP)/Li1.3Al0.3Ti1.7(PO4)3 (LATP) SSE low mobility, flow-domain LiF-rich solid-electrolyte-interphase (SEI) formed, ensuring desirable interfacial stability. Accordingly, as-fabricated PS-Ag-C achieves reversible capacities 3030.3 g−1 0.2 A g−1with an initial Coulombic efficiency 90% 1600 over 500 cycles 1 g−1, respectively. In particular, observed highest areal reaches 4.0 cm−2 100 0.5 Si-based organic-inorganic composite SSEs. Moreover, full cell assembled as-obtained LiNi0.8Co0.1Mn0.1O2 (NCM811) cathode demonstrates This work provides new insights into developing high-capacity durable toward SSBs.

Language: Английский

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Advances and Future Prospects of Micro‐Silicon Anodes for High‐Energy‐Density Lithium‐Ion Batteries: A Comprehensive Review

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: April 9, 2024

Abstract Silicon (Si), stands out for its abundant resources, eco‐friendliness, affordability, high capacity, and low operating potential, making it a prime candidate high‐energy‐density lithium‐ion batteries (LIBs). Notably, the breakthrough use of nanostructured Si (nSi) has paved way commercialization anodes. Despite this, challenges like processing costs, severe side reactions, volumetric energy density have impeded widespread industrial adoption. Micron‐scale (µSi) always faced setbacks compared to nSi due greater volume expansion. However, recent years witnessed resurgence interest in µSi‐based Capitalizing on inherent advantages, including cost tap density, µSi once again captured attention both academic communities. This review begins by contrasting strengths weaknesses nSi, then outline potential solutions enhance performance, covering aspects structural regulation, composite anodes, binder design, electrolyte exploration. Additionally, this work explores application machine learning‐assisted high‐throughput screening. Concluding review, provides insights into future prospects LIBs, outlining proposing integrated coping strategies. anticipates that will provide valuable perspectives commercial Si‐based

Language: Английский

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The Progress of Hard Carbon as an Anode Material in Sodium-Ion Batteries

Molecules, Journal Year: 2023, Volume and Issue: 28(7), P. 3134 - 3134

Published: March 31, 2023

When compared to expensive lithium metal, the metal sodium resources on Earth are abundant and evenly distributed. Therefore, low-cost sodium-ion batteries expected replace lithium-ion become most likely energy storage system for large-scale applications. Among many anode materials batteries, hard carbon has obvious advantages great commercial potential. In this review, adsorption behavior of ions at active sites surface carbon, process entering graphite lamellar, their sequence in discharge analyzed. The controversial mechanism is discussed, four mechanisms summarized. Not only (in carbon) analyzed depth, but also relationships between morphology structure regulation heteroatom doping electrolyte optimization further as well electrochemical performance anodes batteries. It that with will have excellent performance, lower costs be required systems.

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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Electronic Modulation and Structural Engineering of Carbon-Based Anodes for Low-Temperature Lithium-Ion Batteries: A Review

Molecules, Journal Year: 2023, Volume and Issue: 28(5), P. 2108 - 2108

Published: Feb. 23, 2023

Lithium-ion batteries (LIBs) have become the preferred battery system for portable electronic devices and transportation equipment due to their high specific energy, good cycling performance, low self-discharge, absence of memory effect. However, excessively ambient temperatures will seriously affect performance LIBs, which are almost incapable discharging at −40~−60 °C. There many factors affecting low-temperature one most important is electrode material. Therefore, there an urgent need develop materials or modify existing in order obtain excellent LIB performance. A carbon-based anode candidate use LIBs. In recent years, it has been found that diffusion coefficient lithium ion graphite anodes decreases more obviously temperatures, factor limiting its structure amorphous carbon complex; they ionic properties, grain size, surface area, layer spacing, structural defects, functional groups, doping elements may a greater impact on this work, LIBs was achieved by modifying material from perspectives modulation engineering.

Language: Английский

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Discovering Cathodic Biocompatibility for Aqueous Zn–MnO2 Battery: An Integrating Biomass Carbon Strategy

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: Feb. 5, 2024

Developing high-performance aqueous Zn-ion batteries from sustainable biomass becomes increasingly vital for large-scale energy storage in the foreseeable future. Therefore, γ-MnO

Language: Английский

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Recent Advances in Porous Carbon Materials as Electrodes for Supercapacitors

Nanomaterials, Journal Year: 2023, Volume and Issue: 13(11), P. 1744 - 1744

Published: May 26, 2023

Porous carbon materials have demonstrated exceptional performance in various energy and environment-related applications. Recently, research on supercapacitors has been steadily increasing, porous emerged as the most significant electrode material for supercapacitors. Nonetheless, high cost potential environmental pollution associated with preparation process of remain issues. This paper presents an overview common methods preparing materials, including carbon-activation method, hard-templating soft-templating sacrificial-templating self-templating method. Additionally, we also review several emerging such copolymer pyrolysis, carbohydrate self-activation, laser scribing. We then categorise carbons based their pore sizes presence or absence heteroatom doping. Finally, provide recent applications electrodes

Language: Английский

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Homologous Heterostructured NiS/NiS₂@C Hollow Ultrathin Microspheres with Interfacial Electron Redistribution for High‐Performance Sodium Storage

Small, Journal Year: 2023, Volume and Issue: 19(42)

Published: June 15, 2023

Nickel sulfides with high theoretical capacity are considered as promising anode materials for sodium-ion batteries (SIBs); however, their intrinsic poor electric conductivity, large volume change during charging/discharging, and easy sulfur dissolution result in inferior electrochemical performance sodium storage. Herein, a hierarchical hollow microsphere is assembled from heterostructured NiS/NiS2 nanoparticles confined by situ carbon layer (H-NiS/NiS2 @C) via regulating the sulfidation temperature of precursor Ni-MOFs. The morphology ultrathin spherical shells confinement to active provide rich channels ion/electron transfer alleviate effects agglomeration material. Consequently, as-prepared H-NiS/NiS2 @C exhibit superb properties, satisfactory initial specific 953.0 mA h g-1 at 0.1 A , excellent rate capability 509.9 2 superior longtime cycling life 433.4 after 4500 cycles 10 . Density functional theory calculation shows that heterogenous interfaces electron redistribution lead charge NiS NiS2 thus favor interfacial transport reduce ion-diffusion barrier. This work provides an innovative idea synthesis homologous heterostructures high-efficiency SIB electrode materials.

Language: Английский

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