Recent advances in rational design for high-performance potassium-ion batteries

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(13), P. 7202 - 7298

Published: Jan. 1, 2024

The growing global energy demand necessitates the development of renewable solutions to mitigate greenhouse gas emissions and air pollution. To efficiently utilize yet intermittent sources such as solar wind power, there is a critical need for large-scale storage systems (EES) with high electrochemical performance. While lithium-ion batteries (LIBs) have been successfully used EES, surging price, coupled limited supply crucial metals like lithium cobalt, raised concerns about future sustainability. In this context, potassium-ion (PIBs) emerged promising alternatives commercial LIBs. Leveraging low cost potassium resources, abundant natural reserves, similar chemical properties potassium, PIBs exhibit excellent ion transport kinetics in electrolytes. This review starts from fundamental principles structural regulation PIBs, offering comprehensive overview their current research status. It covers cathode materials, anode electrolytes, binders, separators, combining insights full battery performance, degradation mechanisms,

Language: Английский

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Unraveling the Effect of Intrinsic Carbon Defects on Potassium Storage Performance

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 32(48)

Published: Sept. 28, 2022

Abstract Defects engineering is an attractive strategy to improve the potassium storage performance of carbon anodes. The current studies mainly focus on introduction external defects via heteroatom doping, however, exploration effect intrinsic caused by loss atoms or distortion in crystal lattice still lacking date. Hence, a series materials with different defect levels are developed soft‐template assisted method. It found that content synergistically determined application template and pyrolysis temperature, higher more likely expose enormous edge active sites. This greatly promotes K‐adsorption during surface‐induced capacitive process, therefore strong positive correlation between capacity/capacity retention confirmed. As result, electrode maximum realizes good capacity rate capability long cycle lifespan (225.9 mAh g −1 at 2 A over 2000 cycles). study offers insight into role performance.

Language: Английский

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Fundamental Understanding and Research Progress on the Interfacial Behaviors for Potassium‐Ion Battery Anode

Advanced Science, Journal Year: 2022, Volume and Issue: 9(20)

Published: May 9, 2022

Potassium-ion batteries (PIBs) exhibit a considerable application prospect for energy storage systems due to their low cost, high operating voltage, and superior ionic conductivity. As vital configuration in PIBs, the two-phase interface, which refers K-ion diffusion from electrolyte electrode surface (solid-liquid interface) migration between different particles (solid-solid interface), deeply determines diffusion/reaction kinetics structural stability, thus significantly affecting rate performance cyclability. However, researches on interface are still its infancy need further attentions. This review first starts fundamental understanding of solid-liquid solid-solid interfaces in-depth analyzing effect mechanism improvement strategies them, such as optimization binders, heterostructure design, modulation interlayer spacing, etc. Afterward, research progress these is summarized comprehensively. Finally, major challenges proposed, corresponding solving presented. expected give an insight into importance kinetics, provides guidance developing other advanced anodes PIBs.

Language: Английский

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Revitalizing sodium-ion batteries via controllable microstructures and advanced electrolytes for hard carbon

eScience, Journal Year: 2023, Volume and Issue: 4(3), P. 100181 - 100181

Published: Sept. 1, 2023

Sodium-ion batteries (SIBs) with low cost and high safety are considered as an electrochemical energy storage technology suitable for large-scale storage. Hard carbon, which is inexpensive has both capacity sodium potential, regarded the most promising anode commercial SIBs. However, commercialization of hard carbon still faces technical issues initial Coulombic efficiency, poor rate performance, insufficient cycling stability, due to intrinsically irregular microstructure carbon. To address these challenges, rational design crucial achieving high-performance SIBs, via gaining in-depth understanding its structure–performance correlations. In this context, our review firstly describes mechanism from perspective microstructure's formation. We then summarize state-of-art development providing a critical overview emergence in terms precursor selection, design, electrolyte regulation optimize strategies addressing practical problems. Finally, we highlight directions future achieve believe will serve basic guidance stimulate more exciting research into other types devices.

Language: Английский

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Advanced anode materials for potassium batteries: Sorting out opportunities and challenges by potassium storage mechanisms

Matter, Journal Year: 2023, Volume and Issue: 6(10), P. 3220 - 3273

Published: Aug. 9, 2023

Language: Английский

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Low‐Temperature Carbonized N/O/S‐Tri‐Doped Hard Carbon for Fast and Stable K‐Ions Storage

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 14(4)

Published: Dec. 2, 2023

Abstract Hard carbon stands out as one of the premier anodes for potassium‐ion batteries (PIBs), celebrated its cost‐effectiveness, natural abundance, and high yield. Yet, performance in PIBs remains subpar due to slow kinetics, a result large ionic radius K‐ions. Herein, unique lamellar N/O/S‐tri‐doped hard (NOSHC) has been developed at an impressively low pyrolysis temperature 500°C, showcasing distinct “slope‐dominated” characteristic. NOSHC delivers superior rate with dominant surface‐driven capacitive contribution (71.6% scan 0.5 mV s −1 ), maintaining robust reversible specific capacity 125 mAh g (half peak) even 5 A . Its stability is equally commendable, it sustains substantial 265 after 100 cycles 0.1 retains 210 post‐1000 1 Moreover, undergoes continuous activation via potassiation/depotassiation during cycling. Rich heteroatom doping introduces plethora defects vacancies, creating abundant active sites. The structure, featuring minimal pores, optimizes K‐ions transport by shortening diffusion length. This study unveils potential enhancing harnessing carbonization approach.

Language: Английский

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2023 roadmap for potassium-ion batteries

Journal of Physics Energy, Journal Year: 2023, Volume and Issue: 5(2), P. 021502 - 021502

Published: Feb. 27, 2023

Abstract The heavy reliance of lithium-ion batteries (LIBs) has caused rising concerns on the sustainability lithium and transition metal ethic issue around mining practice. Developing alternative energy storage technologies beyond become a prominent slice global research portfolio. play vital role in shaping future landscape storage, from electrified mobility to efficient utilization renewable energies further large-scale stationary storage. Potassium-ion (PIBs) are promising given its chemical economic benefits, making strong competitor LIBs sodium-ion for different applications. However, many unknown regarding potassium processes materials how it differs sodium understanding solid–liquid interfacial chemistry is massively insufficient PIBs. Therefore, there remain outstanding issues advance commercial prospects PIB technology. This Roadmap highlights up-to-date scientific technological advances insights into solving challenging accelerate development We hope this aids wider community provides cross-referencing other fast-pacing landscape.

Language: Английский

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Unraveling the mechanism of sodium storage in low potential region of hard carbons with different microstructures

Energy storage materials, Journal Year: 2024, Volume and Issue: 67, P. 103269 - 103269

Published: Feb. 15, 2024

Language: Английский

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Sodium symphony: Crafting the future of energy storage with sodium-ion capacitors

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 95, P. 112566 - 112566

Published: June 20, 2024

Language: Английский

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Constructing Active BN Sites in Carbon Nanosheets for High‐Capacity and Fast Charging Toward Potassium Ion Storage

Small, Journal Year: 2023, Volume and Issue: 19(20)

Published: Feb. 17, 2023

Nitrogen doping is an effective strategy to improve potassium ion storage of carbon electrodes via the creation adsorption sites. However, various undesired defects are often uncontrollably generated during process, limiting effect on capacity enhancement and deteriorating electric conductivity. Herein, boron element additionally introduced construct 3D interconnected B, N co-doped nanosheets remedy these adverse effects. This work demonstrates that incorporation preferentially converts pyrrolic species into BN sites with lower energy barrier, further enhancing carbon. Meanwhile, conductivity modulated conjugation between electron-rich electron-deficient accelerating charge-transfer kinetics ions. The optimized samples deliver a high specific capacity, rate capability, long-term cyclic stability (532.1 mAh g-1 at 0.05 A , 162.6 2 over 8000 cycles). Furthermore, hybrid capacitors using anode power density excellent cycle life. study promising approach for adsorptive in materials electrochemical applications.

Language: Английский

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