Phase Engineering and Synchrotron-Based Study on Two-Dimensional Energy Nanomaterials

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(17), P. 10750 - 10807

Published: Aug. 15, 2023

In recent years, there has been significant interest in the development of two-dimensional (2D) nanomaterials with unique physicochemical properties for various energy applications. These are often derived from phase structures established through a range physical and chemical design strategies. A concrete analysis real reaction mechanisms 2D requires advanced characterization methods that offer valuable information as much possible. Here, we present comprehensive review on engineering typical focus synchrotron radiation characterizations. particular, intrinsic defects, atomic doping, intercalation, heterogeneous interfaces introduced, together their applications energy-related fields. Among them, synchrotron-based multiple spectroscopic techniques emphasized to reveal phases structures. More importantly, situ employed provide deep insights into structural evolutions under working conditions or processes nanomaterials. Finally, conclusions research perspectives future outlook further light sources integrated discussed.

Language: Английский

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Interfacial growth of N,S-codoped mesoporous carbon onto biomass-derived carbon for superior potassium-ion storage

Nano Research, Journal Year: 2023, Volume and Issue: 17(4), P. 2619 - 2627

Published: Aug. 25, 2023

Language: Английский

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Graphene Oxide Block Derived Edge‐Nitrogen Doped Quasi‐Graphite for High K⁺ Intercalation Capacity and Excellent Rate Performance

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(46)

Published: Oct. 24, 2023

Abstract The intercalation capacity at low potential of carbon‐based anode plays a significant role for developing potassium ion batteries (PIBs) with high energy density. However, the inferior rate and cyclic performance caused by repeated insertion/extraction large K + tremendously restricts practical application PIBs. Herein, quasi‐graphite structure abundant edge‐nitrogen doping, micropores structure, enhanced graphite nanodomains via in situ polymerization oligoaniline in‐between graphene oxide blocks subsequent carbonization is proposed. macro‐ordered multilayered micro‐ordered can provide efficient channels, thus greatly increasing potentials. Moreover, doping (97%) great importance improving transfer kinetics, particularly current densities. As result, exhibits discharge below 0.5 V (303 mAh g −1 0.05 A ), outstanding (113 5 long‐term cycle stability (176 1 after 2000 cycles). mechanism kinetics are systematically probed Raman spectroscopy, ex X‐ray diffraction (XRD) spectra, theoretical calculations. This results demonstrate that construction heteroatom feasible storage.

Language: Английский

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N/S co-doped interconnected hierarchical porous carbon cathode for zinc-ion hybrid capacitors with high energy density

Journal of Power Sources, Journal Year: 2024, Volume and Issue: 613, P. 234937 - 234937

Published: June 21, 2024

Language: Английский

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Coal Tar Pitch Derived sp² Configuration‐Dominated Vacancy‐Rich Carbon with Expand Interlayer Spacing for Low‐Voltage, Durable, and Fast Potassium Storage

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(26)

Published: Feb. 26, 2024

Abstract The low‐voltage charging capacity and rate performance are two crucial but mutually restricted properties of K‐ion batteries. Herein, a sulfonamide amide linkages‐triggered N doping high‐temperature removal strategy is proposed to obtain porous carbon with rich vacancies, high sp 2 hybridized C content (65.3%), large interlayer spacing using coal tar pitch as precursor. Carbon vacancies proved be not only active sites for potassium storage also conducive the fast transfer ions electrons, endowing reversible at low voltage. Moreover, abundant alleviate volume variation, improving cycling stability 8500 cycles (about 3700 h). This work sheds new light on design low‐voltage, durable, anodes, promotes development practical anodes energy density batteries in future.

Language: Английский

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Engineering of edge nitrogen dopant in carbon nanosheet framework for fast and stable potassium-ion storage

Carbon Research, Journal Year: 2024, Volume and Issue: 3(1)

Published: Feb. 27, 2024

Abstract Amorphous carbons are promising candidates as the anode materials for potassium-ion hybrid capacitors (PIHCs). The insufficient storage sites and inferior diffusion kinetics limit their capability. Edge nitrogen morphology engineering effective pathways to construct accessible active enhanced kinetics. However, organic integration of both in amorphous carbon is still challenging. Herein, a “twice-cooking” strategy, including two-step carbonization processes at 700 °C, designed synthesize edge-nitrogen-rich lignin-derived nanosheet framework (EN-LCNF). In first-step process, staged gas releases CO 2 from CaC O 4 decomposition exfoliate matrix into framework. second-step generated CaO reacts with cyanamide units graphitic nitride (g-C 3 N ) form an framework, which then integrated meso-/macropores through sp -hybridized C–N bonds. EN-LCNF high edge-nitrogen level 7.0 at.% delivers excellent capacity 310.3 mAh g −1 50 mA , robust rate capability 126.4 5000 long cycle life. as-assembled PIHCs based on commercial activated cathode show energy density 110.8 Wh kg power 100 W capacitance retention 98.7% after 6000 cycles. This work provides general strategy synthesis advanced storage. Graphical

Language: Английский

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Anchoring Multi‐Coordinated Bismuth Metal Atom Sites on Honeycomb‐Like Carbon Rods Achieving Advanced Potassium Storage

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(45)

Published: July 15, 2024

Abstract Carbonaceous materials are recognized for their high conductivity and adaptable structures, making them potential candidates potassium‐ion batteries (PIBs). Yet, application has been restricted due to challenges like limited potassium storage slow kinetics. Addressing these issues, this study presents a novel method by anchoring nitrogen‐oxygen‐coordinated bismuth metal atom sites onto honeycomb‐like carbon rods, termed Bi‐N 4 ‐O 2 @HCR. This aims enhance PIB performance exploiting carbonaceous materials' strengths mitigating limitations. Through comprehensive experiments theoretical simulations, it is found that enrich facilitate ion migration, thus improving transport efficiency reaction The resulting anode showcased rapid durable storage, with remarkable capacity of 190.7 mAh g −1 at 30 A maintaining 192.2 over 4200 cycles 5 , outperforming many existing anodes. Additionally, in full cell tests, exhibited excellent rate ultra‐long cycle life, sustaining up 8000 stable 88.9 . research underscores the significance incorporating unique on substrates advance battery technology.

Language: Английский

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Anion‐Regulated Sulfur Conversion in High‐Content Carbon Layer Confined Sulfur Cathode Maximizes Voltage and Rate Capability of K–S Batteries

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(15)

Published: Jan. 5, 2024

Potassium-sulfur (K-S) batteries have attracted attention in large-scale energy storage systems. Small-molecule/covalent sulfur (SMCS) can help to avoid the shuttle effect of polysulfide ions via solid-solid conversion. However, content SMCS is relatively low (≤40%), and reactions cause sluggish kinetics discharge potentials. Herein, confined turbo carbon layers with a ≈74.1 wt% C/S co-deposition process. In K-S battery assembled by using as-fabricated SMCS@C as cathode KFSI-EC/DEC an electrolyte, anion-regulated two-plateau solid-state S conversion chemistry novel high potential plateau at 2.5-2.0 V remarkable reversible capacity 384 mAh g

Language: Английский

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Advanced Cathode Designs for High‐Energy Lithium/Sodium–Selenium Battery

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 28, 2025

Abstract Selenium, with its superior conductivity, serves as a promising cathode material in lithium–selenium (Li–Se) and sodium–selenium (Na–Se) batteries, exhibiting faster electron transfer processes volumetric capacity. Nonetheless, challenges such volume expansion, the shuttle effect, slow redox reaction kinetics, low conductivity of discharged products still hinder their commercial application. Extensive research has been conducted on design optimization materials to overcome these issues. This review summarizes latest advancements Se within Li/Na–Se systems, based electrochemical mechanisms batteries origins related challenges. The comprehensive principle advanced stable selenium cathodes is put forward, key role carbon structure analyzed, strategies improve affinity selenide kinetics are discussed. Additionally, it introduces representative polymer‐based metal–organic framework (MOF)‐based cathodes. Some potential modification for active also highlighted, including sulfide composite lithium cathodes, which can significantly enhance Se‐based batteries. Finally, existing research, insights directions future development proposed.

Language: Английский

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N/F/S co-doped 3D interconnected carbon nanosheets with well-developed pores and interlayer spacing for high-performance potassium ion batteries

Journal of Material Science and Technology, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

Language: Английский

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