Hard Carbon Anodes for Next‐Generation Li‐Ion Batteries: Review and Perspective

Advanced Energy Materials, Год журнала: 2021, Номер 11(38)

Опубликована: Сен. 1, 2021

Abstract Carbonaceous materials have been accepted as a promising family of anode for lithium‐ion batteries (LIBs) owing to optimal overall performance. Among various emerging carbonaceous materials, hard carbons recently gained significant attention high‐energy LIBs. The most attractive features are the enriched microcrystalline structure, which not only benefits uptake more Li + ions but also facilitates intercalation and deintercalation. However, booming application is significantly slowed by low initial Coulombic efficiency, large irreversible capacity, voltage hysteresis. Many efforts devoted address these challenges toward practical applications. This paper focuses on an up‐to‐date overview carbons, with emphasis lithium storage fundamentals material classification well present potential solutions. future prospects perspectives enable in next‐generation highlighted.

Язык: Английский

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Kilogram-Scale Synthesis and Functionalization of Carbon Dots for Superior Electrochemical Potassium Storage

ACS Nano, Год журнала: 2021, Номер 15(4), С. 6872 - 6885

Опубликована: Март 16, 2021

Carbon dot is a type of carbon material with an ultrasmall size less than 10 nm for all three dimensions, which has attracted more and attention due to its useful merits. Unfortunately, the complicated synthesis method low yield largely limit wide large-scale application. Herein, inexpensive high-efficiency aldol condensation under ambient temperature pressure was proposed CDs, can obtain products 1.083 kg in 2 h realize functionalization dots doped nitrogen (NCDs) sulfur/nitrogen doubly (NSCDs), then mechanism structure CDs formation were explained. Moreover, utilizing feature controllable assembly dots, combined theoretical calculations, we have designed functionalized 1D fibers (CF) construct high-performance potassium storage anode materials through induced by Zn compound. Benefitting from microstructure surface functional groups derived N-doped CF (NCF700) exhibits superior electrochemical energy performance ion batteries (PIBs). This study provides low-cost high-yield produce promotes practical application storage.

Язык: Английский

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Electrochemical Zinc Ion Capacitors: Fundamentals, Materials, and Systems

Advanced Energy Materials, Год журнала: 2021, Номер 11(21)

Опубликована: Апрель 22, 2021

Abstract An electrochemical zinc ion capacitor (ZIC) is a hybrid supercapacitor composed of porous carbon cathode and anode. Based on the low‐cost features metal, ZIC potential candidate for safe, high‐power, energy storage applications. ZICs have gained tremendous attention in recent years. However, low densities limited cycling stability are still major challenges developing high‐performance ZICs. First, density by capacitance cathodes. Second, aqueous electrolytes induce parasitic reactions, which results voltage windows poor performances Third, stabilities utilization anodes remain to develop practical This review summarizes progress highlights both promising challenging attributes this emerging technology. Future research directions proposed better, lower cost, more scalable

Язык: Английский

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Self‐Assembled Carbon Superstructures Achieving Ultra‐Stable and Fast Proton‐Coupled Charge Storage Kinetics

Advanced Materials, Год журнала: 2021, Номер 33(49)

Опубликована: Окт. 7, 2021

Designing ingenious and stable carbon nanostructures is critical but still challenging for use in energy storage devices with superior electrochemistry kinetics, durable capacitive activity, high rate survivability. To pursue the objective, a simple self-assembly strategy developed to access superstructures built of nanoparticle embedded plates. The precursors, 2,4,6-trichloro-1,3,5-triazine 2,6-diaminoanthraquinone can form porous organic polymer "protic salt"-type rigid skeleton linked by -NH2 + Cl- - "rivets", which provides cornerstone hydrogen-bonding-guided backbone π-π plane stacking. ameliorative charge density distribution decreased adsorption as-fabricated allow accessibility build-in protophilic sites efficient ion diffusion low barrier. Such thus deliver ultra-stable fast proton-coupled kinetics at structural-chemical defects, contributing unprecedented lifespan (1 000 cycles), high-rate capability (100 A g-1 ) carbon-based supercapacitors, an ultrahigh (128 Wh kg-1 Zn-ion hybrid supercapacitors. self-assembled significantly improve all-round electrochemical performances, hold great promise storage.

Язык: Английский

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Designing and Understanding the Superior Potassium Storage Performance of Nitrogen/Phosphorus Co‐Doped Hollow Porous Bowl‐Like Carbon Anodes

Advanced Functional Materials, Год журнала: 2020, Номер 31(1)

Опубликована: Ноя. 10, 2020

Abstract Potassium‐ion batteries (PIBs) are promising alternatives to lithium‐ion because of the advantage abundant, low‐cost potassium resources. However, PIBs facing a pivotal challenge develop suitable electrode materials for efficient insertion/extraction large‐radius ions (K + ). Here, viable anode material composed uniform, hollow porous bowl‐like hard carbon dual doped with nitrogen (N) and phosphorus (P) (denoted as N/P‐HPCB) is developed high‐performance PIBs. With prominent merits in structure, as‐fabricated N/P‐HPCB manifests extraordinary storage performance terms high reversible capacity (458.3 mAh g −1 after 100 cycles at 0.1 A ), superior rate (213.6 4 long‐term cyclability (205.2 1000 2 Density‐functional theory calculations reveal N/P doping favor facilitating adsorption/diffusion K enhancing electronic conductivity, guaranteeing improved capacity, capability. Moreover, situ transmission electron microscopy conjunction ex Raman spectroscopy confirms exceptional cycling stability originating from excellent phase reversibility robust structure integrity during cycling. Overall, findings shed light on development high‐performance, durable anodes advanced

Язык: Английский

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Lignin derived carbon materials: current status and future trends

Carbon Research, Год журнала: 2022, Номер 1(1)

Опубликована: Июль 29, 2022

Abstract Developing novel techniques to convert lignin into sustainable chemicals and functional materials is a critical route toward the high-value utilization of lignocellulosic biomass. Lignin-derived carbon hold great promise for applications in energy chemical engineering, catalysis environmental remediation. In this review, state-of-art sciences technologies controllable synthesis lignin-derived are summarized, pore structure crystalline morphology controlling methodologies thoroughly outlined critically discussed. Green engineering with cost-effectiveness precise carbonization tuning microstructure future research trends materials. Future directions that could be employed advance commercial then proposed.

Язык: Английский

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Sulfur-Rich Graphene Nanoboxes with Ultra-High Potassiation Capacity at Fast Charge: Storage Mechanisms and Device Performance

ACS Nano, Год журнала: 2020, Номер 15(1), С. 1652 - 1665

Опубликована: Дек. 28, 2020

It is a major challenge to achieve fast charging and high reversible capacity in potassium ion storing carbons. Here, we synthesized sulfur-rich graphene nanoboxes (SGNs) by one-step chemical vapor deposition deliver exceptional rate cyclability performance as battery capacitor (PIC) anodes. The SGN electrode exhibits record of 516 mAh g–1 at 0.05 A g–1, charge 223 mA h 1 stability with 89% retention after 1000 cycles. Additionally, the SGN-based PIC displays highly favorable Ragone chart characteristics: 112 Wh kg–1at 505 W kg–1 28 14618 92% 6000 X-ray photoelectron spectroscopy analysis illustrates storage sequence based primarily on binding structural–chemical defects carbon formation K–S–C K2S compounds. Transmission electron microscopy demonstrates dilation due intercalation, which secondary source low voltage. This intercalation mechanism shown be stable even cycle 1000. Galvanostatic intermittent titration technique yields diffusion coefficients from 10–10 10–12 cm2 s–1, an order magnitude higher than S-free direct electroanalytic/analytic comparison indicates that chemically bound sulfur increases number bonding sites, promotes reaction-controlled over diffusion-controlled kinetics, stabilizes solid electrolyte interphase. also demonstrated initial Coulombic efficiency can significantly improved switching standard carbonate-based ether-based one.

Язык: Английский

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Dual-doped carbon hollow nanospheres achieve boosted pseudocapacitive energy storage for aqueous zinc ion hybrid capacitors

Energy storage materials, Год журнала: 2021, Номер 42, С. 705 - 714

Опубликована: Авг. 15, 2021

Язык: Английский

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Status of rechargeable potassium batteries

Nano Energy, Год журнала: 2021, Номер 83, С. 105792 - 105792

Опубликована: Янв. 19, 2021

Язык: Английский

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A review of hard carbon anode: Rational design and advanced characterization in potassium ion batteries

InfoMat, Год журнала: 2022, Номер 4(2)

Опубликована: Янв. 2, 2022

Abstract K‐ion batteries (KIBs) have attracted tremendous attention and seen significant development because of their low price, high operating voltage, properties similar to those Li‐ion batteries. In the field full batteries, exploring high‐performing low‐cost anode materials for storage is a crucial challenge. Owing excellent cost effectiveness, abundant precursors, environmental benignancy, hard carbons (HCs) are considered promising KIBs. As result, researchers devoted much effort quantify understand underlying mechanisms HC‐based anodes. this review, we mainly introduce electrochemical reaction mechanism HCs in KIBs, summarize approaches further improve performance storage. addition, also highlight some advanced situ characterization methods understanding evolutionary process potassiation–depotassiation process, which essential directional optimization Finally, raise challenges developing smart‐structured HC propose rational design principles perspectives serving as guidance targeted image

Язык: Английский

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