Hard carbon anodes for sodium-ion batteries: Dependence of the microstructure and performance on the molecular structure of lignin

Journal of Power Sources, Год журнала: 2023, Номер 581, С. 233475 - 233475

Опубликована: Авг. 1, 2023

Язык: Английский

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Pore structure and oxygen content design of amorphous carbon toward a durable anode for potassium/sodium‐ion batteries

Carbon Energy, Год журнала: 2024, Номер unknown

Опубликована: Март 29, 2024

Abstract Both sodium‐ion batteries (SIBs) and potassium‐ion (PIBs) are considered as promising candidates in grid‐level energy storage devices. Unfortunately, the larger ionic radii of K + Na induce poor diffusion kinetics cycling stability carbon anode materials. Pore structure regulation is an ideal strategy to promote cyclic materials by facilitating electrolyte infiltration, increasing transport channels, alleviating volume change. However, traditional pore‐forming agent‐assisted methods considerably increase difficulty synthesis limit practical applications porous Herein, (Ca‐PC/Na‐PC/K‐PC) with different pore structures have been prepared gluconates precursors, amorphous structure, abundant micropores, oxygen‐doping active sites endow Ca‐PC excellent potassium sodium performance. For PIBs, capacitive contribution ratio 82% at 5.0 mV s −1 due introduction micropores high content, while a reversible capacity 121.4 mAh g can be reached 5 A after 2000 cycles. SIBs, stable 101.4 achieved 2 8000 cycles very low decay rate 0.65% for per cycle. This work may provide avenue application field.

Язык: Английский

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Order-in-disordered ultrathin carbon nanostructure with nitrogen-rich defects bridged by pseudographitic domains for high-performance ion capture

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Июль 31, 2024

Carbon materials with defect-rich structure are highly demanded for various electrochemical scenes, but encountering a conflict the deteriorative intrinsic conductivity. Herein, we build highway-mediated nanoarchitecture that consists of ordered pseudographitic nanodomains among disordered nitrogen-doped segments through supramolecular self-assembly strategy. The "order-in-disorder" nanosheet-like carbon obtained at 800 °C (O/D NSLC-800) achieves tradeoff high defect degree (21.9 at% doped nitrogen) and compensated electrical conductivity simultaneously. As expected, symmetrical O/D NSLC-800 electrodes exhibit superior capacitive deionization (CDI) performance, including brackish water desalination (≈82 mgNaCl g−1 cell voltage 1.6 V in 1000 mg L−1 NaCl solution) reusage actual refining circulating cooling water, outperforming most reported state-of-the-art CDI electrodes. implanted lower resistance activation energy charge transfer, which motivates synergy hosting sites multiple nitrogen configurations. Our findings shed light on electrically conductive design advanced applications based molecular-level modulation. widely used technologies. However, their deteriorates over time. Here authors to promote transfer ion capture.

Язык: Английский

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Biomass-Derived Carbon Materials for Advanced Metal-Ion Hybrid Supercapacitors: A Step Towards More Sustainable Energy

Batteries, Год журнала: 2024, Номер 10(5), С. 168 - 168

Опубликована: Май 20, 2024

Modern research has made the search for high-performance, sustainable, and efficient energy storage technologies a main focus, especially in light of growing environmental energy-demanding issues. This review paper focuses on pivotal role biomass-derived carbon (BDC) materials development high-performance metal-ion hybrid supercapacitors (MIHSCs), specifically targeting sodium (Na)-, potassium (K)-, aluminium (Al)-, zinc (Zn)-ion-based systems. Due to their widespread availability, renewable nature, exceptional physicochemical properties, BDC are ideal supercapacitor electrodes, which perfectly balance sustainability technological advancement. delves into synthesis, functionalization, structural engineering advanced biomass-based materials, highlighting strategies enhance electrochemical performance. It elaborates unique characteristics these carbons, such as high specific surface area, tuneable porosity, heteroatom doping, achieving superior capacitance, density, cycling stability Na-, K-, Al-, Zn-ion supercapacitors. Furthermore, compatibility BDCs with electrolytes facilitating ion transport charge mechanisms critically analysed. Novelty arises from comprehensive comparison across systems, unveiling synergistic effects BDCs’ attributes performance each type. also casts current challenges, scalability, cost-effectiveness, consistency, offering insightful perspectives future research. underscores transformative potential MIHSCs paves way next-generation that both high-performing ecologically friendly. calls continued innovation interdisciplinary collaboration explore sustainable thereby contributing advancing green technologies.

Язык: Английский

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Lignin molecular sieving engineering enables high-plateau-capacity hard carbon anodes for sodium-ion batteries

Green Chemistry, Год журнала: 2024, Номер 26(13), С. 7919 - 7930

Опубликована: Янв. 1, 2024

Lignin molecules with different polarities are separated through molecular sieve engineering. The hard carbon prepared using acetone-isolated lignin has the largest closed pore volume, which enables a high plateau capacity of 233 mA h g −1 .

Язык: Английский

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Lignin-Based Polymer Networks Enabled N, S Co-Doped Defect-Rich Hierarchically Porous Carbon Anode for Long-Cycle Li-Ion Batteries

ACS Sustainable Chemistry & Engineering, Год журнала: 2024, Номер 12(7), С. 2881 - 2892

Опубликована: Фев. 6, 2024

The commercial graphitic anode with low specific capacity and serious lithium dendrite growth has limited further improvements of Li-ion batteries (LIBs). Here, we report a hierarchical porous hard carbon N, S codoping (LSCF) that is synthesized using trifunctional sodium lignosulfonate (LS) from the pulp waste as self-sacrificing template, source, sulfur natural chitosan both source nitrogen source. strong hydrogen-bond interaction between LS enabled robust stability framework. And self-template sulfates carbonates formation structure. First-principles calculations indicate LSCF heteroatom doping lower diffusion barrier Li+ higher electron conductivity. As an for LIBs, delivers 350 mAh g–1 at 100 mA 85% retention after 1000 cycles. This work offers one-step low-cost method to fabricate LIBs dual-atom based on green polymers.

Язык: Английский

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Comprehensive Insights into Potassium‐Ion Capacitors: Mechanisms, Materials, Devices and Future Perspectives

Advanced Energy Materials, Год журнала: 2024, Номер 14(29)

Опубликована: Май 17, 2024

Abstract Alkali metal‐ion capacitors integrate two electrodes from both batteries and supercapacitors (SCs), combining the advantages of large capacity, high‐rate performance, long cycle life. Potassium (K) has similar properties to sodium (Na) lithium (Li), however, abundance K in crust is same with Na, much higher than Li. Due fast kinetics low self‐discharge Potassium‐ion (PICs), PICs attract more interest researchers field electrochemical energy storage. The current dilemma that research on inherited sodium‐ion (SICs) lithium‐ion (LICs). Despite advancements electrode materials, there still a lack profound understanding intrinsic issues key challenges PICs. In order provide detailed systematic analysis development PICs, this review, special attention given following Accordingly, full eight sections: i) history, ii) defining equations, iii) storage mechanism, iv) device configuration, v) vi) electrolyte design, vii) technologies, viii) future perspectives. This review provides an intensive theoretical foundation for able pave path practical application

Язык: Английский

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Recent Advances in Functionalized Biomass‐Derived Porous Carbons and their Composites for Hybrid Ion Capacitors

Advanced Science, Год журнала: 2024, Номер unknown

Опубликована: Июль 19, 2024

Hybrid ion capacitors (HICs) have aroused extreme interest due to their combined characteristics of energy and power densities. The performance HICs lies hidden in the electrode materials used for construction battery supercapacitor components. hunt is always on locate best material terms cost-effectiveness overall optimized characteristics. Functionalized biomass-derived porous carbons (FBPCs) possess exquisite features including easy synthesis, wide availability, high surface area, large pore volume, tunable size, functional groups, a range morphologies, thermal chemical stability. FBPCs found immense use as cathode, anode dual recent literature. current review designed around two main concepts which include synthesis properties followed by utilization various types HICs. Among monovalent HICs, lithium, sodium, potassium, are given comprehensive attention, whereas zinc only multivalent HIC that focused upon corresponding literature availability. Special attention also provided critical factors govern concludes providing feasible directions future research aspects

Язык: Английский

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

Carbon Research, Год журнала: 2024, Номер 3(1)

Опубликована: Фев. 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

Язык: Английский

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Hydrogen-bonded organic framework-derived, flower-on-fiber-like, carbon nanofiber electrodes for supercapacitors

Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(11), С. 6712 - 6723

Опубликована: Янв. 1, 2024

Hydrogen-bonded organic frameworks (HOFs) are a new type of porous material and have great potential as electrode precursors because their high porosity.

Язык: Английский

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