Recent Advances and Perspectives of Battery-Type Anode Materials for Potassium Ion Storage

ACS Nano, Journal Year: 2021, Volume and Issue: 15(12), P. 18931 - 18973

Published: Dec. 3, 2021

Potassium ion energy storage devices are competitive candidates for grid-scale applications owing to the abundancy and cost-effectiveness of potassium (K) resources, low standard redox potential K/K+, high ionic conductivity in K-salt-containing electrolytes. However, sluggish reaction dynamics poor structural instability battery-type anodes caused by insertion/extraction large K+ ions inhibit full K systems. Extensive efforts have been devoted exploration promising anode materials. This Review begins with a brief introduction operation principles performance indicators typical systems significant advances different types materials, including intercalation-, mixed surface-capacitive-/intercalation-, conversion-, alloy-, conversion-/alloy-, organic-type Subsequently, host-guest relationships discussed correlation electrochemical properties, underlying mechanisms, critical issues faced each type material concerning their implementation Several optimization strategies improve highlighted. Finally, perspectives on future trends provided, which aimed at accelerating development

Language: Английский

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

Advanced Materials, Journal Year: 2021, Volume and Issue: 33(49)

Published: Oct. 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.

Language: 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, Journal Year: 2020, Volume and Issue: 31(1)

Published: Nov. 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

Language: Английский

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In Situ Hard‐Template Synthesis of Hollow Bowl‐Like Carbon: A Potential Versatile Platform for Sodium and Zinc Ion Capacitors

Advanced Energy Materials, Journal Year: 2020, Volume and Issue: 10(47)

Published: Oct. 30, 2020

Abstract Metal‐ion capacitors are being widely studied to reach a balance between power and energy output by combining the merits of conventional batteries capacitors. The main challenge for Na‐ion is that battery‐type anode usually has unsatisfactory density long‐term stability since most Na host materials have poor kinetic structural stability. Herein, asymmetric hollow bowl‐like carbon (HBC) rationally designed fabricated through an in situ hard‐template approach. formation originates from subtle control capillary force mechanical strength shell. HBCs possess abundant mesopores, high volumes accessible surface area as well open macropore network. As 3D host, MoSe 2 nanocrystals anchored onto HBC matrix solid‐phase reaction. obtained @HBC nanobowl electrode exhibits pseudocapacitive sodium storage with fast kinetics, improved capacity at currents, cycle stability, which also supported DFT calculations. Sodium ion capacitor full cells using two architectures (MoSe cathode), deliver densities, long life, comparably low self‐discharge rate. Moreover, application zinc‐ion (ZIC) demonstrated.

Language: Английский

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

ACS Nano, Journal Year: 2020, Volume and Issue: 15(1), P. 1652 - 1665

Published: Dec. 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.

Language: Английский

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

Energy storage materials, Journal Year: 2021, Volume and Issue: 42, P. 705 - 714

Published: Aug. 15, 2021

Language: Английский

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Carbonaceous Anode Materials for Non-aqueous Sodium- and Potassium-Ion Hybrid Capacitors

ACS Energy Letters, Journal Year: 2021, Volume and Issue: 6(11), P. 4127 - 4154

Published: Nov. 1, 2021

Sodium- and potassium-ion (Na-/K-ion) hybrid capacitors are promising electrochemical energy storage systems that more cost-effective than corresponding lithium-based alternatives. Their configuration integrates a battery-type anode capacitor-type cathode affords high density, power good cycling stability. However, the primary issue encountered in Na-/K-ion is lack of reliable anodes because sluggish reaction kinetics large Na-/K-ions. In recent years, significant advancements have been achieved carbonaceous their feasibility, natural abundance, low cost, non-toxicity. This review encompasses fundamental principles provides insights into intimate structure–performance relationship anodes. The existing challenges alternative strategies for improving performance emphasized. Finally, future prospects possible directions further presented.

Language: Английский

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Liquid‐State Templates for Constructing B, N, Co‐Doping Porous Carbons with a Boosting of Potassium‐Ion Storage Performance

Advanced Energy Materials, Journal Year: 2020, Volume and Issue: 11(4)

Published: Dec. 18, 2020

Abstract Template‐assistant design and fabrication of porous carbon electrode materials has experienced great progress throughout the past decades yielded lots successes via various gas or solid state templates. Nevertheless, liquid‐state templates are rather rare in preparing to date. In this work, melting B 2 O 3 beads used as both a dopant, leading unique B, N co‐doping hierarchically carbons containing “bubble pool”‐like skeleton built interconnected nanobubbles. Notably, an interesting amending effect doped atoms on N‐doped network can be identified for first time, which creates “paddy field”‐like hybrid microstructure with co‐existence sp short‐range order defective areas, ideal model good conductivity high capacity. Together rich ion diffusing pathways structural integrity skeleton, resultant delivers comprehensive K‐ion storage performance. Therefore, findings demonstrate pore‐making merits liquid templates, may open door exploring more innovations microstructures functionalities applications energy other fields.

Language: Английский

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Eliminating the Micropore Confinement Effect of Carbonaceous Electrodes for Promoting Zn‐Ion Storage Capability

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(39)

Published: Aug. 11, 2022

Zinc-ion capacitors (ZICs) are promising technology for large-scale energy storage by integrating the attributes of supercapacitors and zinc-ion batteries. Unfortunately, insufficient Zn2+ -storage active sites carbonaceous cathode materials mismatch pore sizes with charge carriers lead to unsatisfactory capability. Herein, new insights boosting capability activated nitrogen-doped hierarchical porous carbon (ANHPC-x) reported effectively eliminating micropore confinement effect synchronously elevating utilization sites. Therefore, best-performed ANHPC-2 delivers impressive electrochemical properties ZICs in terms excellent capacity (199.1 mAh g-1 ), density (155.2 Wh kg-1 durability (65 000 cycles). Systematic ex situ characterizations together quartz crystal microbalance Raman spectra measurements reveal that remarkable performance is assigned synergism , H+ SO42- co-adsorption mechanism reversible chemical adsorption. Furthermore, ANHPC-2-based quasi-solid-state ZIC demonstrates an ultralong lifespan up 100 cycles. This work not only provides a strategy improve but also sheds lights on charge-storage advanced electrode materials' design toward practical applications.

Language: Английский

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Tissue-derived carbon microbelt paper: a high-initial-coulombic-efficiency and low-discharge-platform K⁺-storage anode for 4.5 V hybrid capacitors

Energy & Environmental Science, Journal Year: 2021, Volume and Issue: 15(1), P. 158 - 168

Published: Nov. 25, 2021

Sanitary tissue is utilized as the precursor to construct a hard carbon microbelt paper (HCMB), which can be employed high-initial-coulombic-efficiency and low-discharge-platform K + -storage anode for 4.5 V hybrid capacitors.

Language: Английский

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