Simultaneous Regulation on Solvation Shell and Electrode Interface for Dendrite‐Free Zn Ion Batteries Achieved by a Low‐Cost Glucose Additive

Angewandte Chemie International Edition, Journal Year: 2021, Volume and Issue: 60(33), P. 18247 - 18255

Published: May 26, 2021

Dendrite growth and by-products in Zn metal aqueous batteries have impeded their development as promising energy storage devices. We utilize a low-cost additive, glucose, to modulate the typical ZnSO4 electrolyte system for improving reversible plating/stripping on anode high-performance ion (ZIBs). Combing experimental characterizations theoretical calculations, we show that glucose environment can simultaneously solvation structure of Zn2+ anode-electrolyte interface. The engineering alternate one H2 O molecule from primary -6H2 shell restraining side reactions due decomposition active water. Concomitantly, molecules are inclined absorb surface anode, suppressing random dendrite. As proof concept, symmetric cell Zn-MnO2 full with achieve boosted stability than pure electrolyte.

Language: Английский

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High-entropy mechanism to boost ionic conductivity

Science, Journal Year: 2022, Volume and Issue: 378(6626), P. 1320 - 1324

Published: Dec. 22, 2022

Advances in solid-state batteries have primarily been driven by the discovery of superionic conducting structural frameworks that function as solid electrolytes. We demonstrate ability high-entropy metal cation mixes to improve ionic conductivity a compound, which leads less reliance on specific chemistries and enhanced synthesizability. The local distortions introduced into materials give rise an overlapping distribution site energies for alkali ions so they can percolate with low activation energy. Experiments verify high entropy orders-of-magnitude higher conductivities lithium (Li)–sodium (Na) conductor (Li-NASICON), sodium NASICON (Na-NASICON), Li-garnet structures, even at fixed content. provide insight selecting optimal distortion designing conductors across vast compositional space.

Language: Английский

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A dielectric electrolyte composite with high lithium-ion conductivity for high-voltage solid-state lithium metal batteries

Nature Nanotechnology, Journal Year: 2023, Volume and Issue: 18(6), P. 602 - 610

Published: March 9, 2023

Language: Английский

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Rational Design of Electrode Materials for Advanced Supercapacitors: From Lab Research to Commercialization

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(14)

Published: Jan. 18, 2023

Abstract Supercapacitors can harvest electrical energy from intermittent sources and transfer it quickly, but their specific must be raised if they are applied to efficiently power wearable flexible electronics, as well larger equipment. However, the remaining big gap between lab research practical applications seriously hinders further progress of advanced supercapacitors, especially for electrode materials. Consequently, a commercial/usable perspective, clear guideline commercialization is highly desired bringing supercapacitors basic into reality. This review focuses on key factors summarizes recent in field outlines perspectives future research. First, several storage mechanisms illustrated building better supercapacitors. Then, up‐to‐date achievements progresses smart methods toward high‐energy effective strategies commercial‐level mass‐loading high packing density electrodes summarized commented upon. Also, integrated systems application fields commercial also highlighted. Subsequently, directions presented here guide

Language: Английский

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An Advanced High‐Entropy Fluorophosphate Cathode for Sodium‐Ion Batteries with Increased Working Voltage and Energy Density

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(14)

Published: Feb. 3, 2022

Impossible voltage plateau regulation for the cathode materials with fixed active elemental center is a pressing issue hindering development of Na-superionic-conductor (NASICON)-type Na3 V2 (PO4 )2 F3 (NVPF) cathodes in sodium-ion batteries (SIBs). Herein, high-entropy substitution strategy, to alter detailed crystal structure NVPF without changing central V atom, pioneeringly utilized, achieving simultaneous electronic conductivity enhancement and diffusion barrier reduction Na+ , according theoretical calculations. The as-prepared carbon-free V1.9 (Ca,Mg,Al,Cr,Mn)0.1 (HE-NVPF) can deliver higher mean 3.81 more advantageous energy density up 445.5 Wh kg-1 which attributed by diverse transition-metal crystalline. More importantly, introduction help realize disordered rearrangement at Na(2) sites, thereby refrain from unfavorable discharging behaviors low-voltage region, further lifting working full Na-ion storage high plateau. Coupling hard carbon (HC) anode, HE-NVPF//HC SIB cells specific 326.8 5 C power 2178.9 W . This route means unlikely potential NASICON-type unchangeable becomes possible, inspiring new ideas on elevating cathodes.

Language: Английский

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Freestanding Metal–Organic Frameworks and Their Derivatives: An Emerging Platform for Electrochemical Energy Storage and Conversion

Chemical Reviews, Journal Year: 2022, Volume and Issue: 122(11), P. 10087 - 10125

Published: April 21, 2022

Metal–organic frameworks (MOFs) have recently emerged as ideal electrode materials and precursors for electrochemical energy storage conversion (EESC) owing to their large specific surface areas, highly tunable porosities, abundant active sites, diversified choices of metal nodes organic linkers. Both MOF-based MOF-derived in powder form been widely investigated relation synthesis methods, structure morphology controls, performance advantages targeted applications. However, engage them applications, both binders additives would be required postprocessed electrodes, fundamentally eliminating some the sites thus degrading superior effects MOF-based/derived materials. The advancement freestanding electrodes provides a new promising platform EESC thanks apparent merits, including fast electron/charge transmission seamless contact between current collectors. Benefiting from synergistic effect structures materials, outstanding can achieved, stimulating increasing enthusiasm recent years. This review timely comprehensive overview on structural features fabrication techniques electrodes. Then, latest advances are summarized devices electrocatalysis. Finally, insights into currently faced challenges further perspectives these feasible solutions discussed, aiming at providing set guidance promote development scale-up production commercial

Language: Английский

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Electron and Ion Transport in Lithium and Lithium-Ion Battery Negative and Positive Composite Electrodes

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(4), P. 1327 - 1363

Published: Feb. 9, 2023

Electrochemical energy storage systems, specifically lithium and lithium-ion batteries, are ubiquitous in contemporary society with the widespread deployment of portable electronic devices. Emerging applications such as integration renewable generation expanded adoption electric vehicles present an array functional demands. Critical to battery function electron ion transport they determine output under application conditions what portion total contained can be utilized. This review considers processes for active materials well positive negative composite electrodes. Length time scales over many orders magnitude relevant ranging from atomic arrangements short times conduction large format batteries years operation. Characterization this diversity demands multiple methods obtain a complete view involved. In addition, we offer perspective on strategies enabling rational design electrodes, role continuum modeling, fundamental science needed continued advancement electrochemical systems improved density, power, lifetime.

Language: Английский

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Defect‐Selectivity and “Order‐in‐Disorder” Engineering in Carbon for Durable and Fast Potassium Storage

Advanced Materials, Journal Year: 2021, Volume and Issue: 34(7)

Published: Dec. 1, 2021

Defect-rich carbon materials possess high gravimetric potassium storage capability due to the abundance of active sites, but their cyclic stability is limited because low reversibility undesirable defects and deteriorative conductivity. Herein, in situ defect-selectivity order-in-disorder synergetic engineering via a self-template strategy reported boost K+ -storage capacity, rate simultaneously. The defect-sites are selectively tuned realize abundant reversible carbon-vacancies with sacrifice poorly heteroatom-defects through persistent gas release during pyrolysis. Meanwhile, nanobubbles generated pyrolysis serve as self-templates induce surface atom rearrangement, thus embedding nanographitic networks defective domains without serious phase separation, which greatly enhances intrinsic structure ensures concentration fast charge-transfer kinetics simultaneously, leading capacity (425 mAh g-1 at 0.05 A ), high-rate (237.4 1 superior (90.4% retention from cycle 10 400 0.1 ). This work provides rational facile tradeoff between conductivity, gives deep insights into mechanism storage.

Language: Английский

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In Situ Catalytic Polymerization of a Highly Homogeneous PDOL Composite Electrolyte for Long‐Cycle High‐Voltage Solid‐State Lithium Batteries

Advanced Energy Materials, Journal Year: 2022, Volume and Issue: 12(39)

Published: Aug. 25, 2022

Abstract High energy density solid‐state lithium batteries require good ionic conductive solid electrolytes (SE) and stable matching with high‐voltage electrode materials. Here, a highly homogeneous poly(1,3‐dioxolane) composite electrolyte (CSE) membrane that can satisfy the above‐mentioned requirements by in situ catalytic polymerization effect of yttria stabilized zirconia (YSZ) nanoparticles on 1,3‐dioxolane (DOL), is reported. The well‐dispersed YSZ nanoparticle catalyst leads to conversion DOL monomers up 98.5%, which enlarges its electrochemical window exceeding 4.9 V. also significantly improves room temperature conductivity (2.75 × 10 −4 S cm −1 ) enhances cycle life metal anode. Based this CSE, Li(Ni 0.6 Co 0.2 Mn )O 2 (NCM622)‐based battery shows long over 800 cycles. This investigation encourages polymer SE toward practical high batteries.

Language: Английский

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Life‐Cycle Assessment Considerations for Batteries and Battery Materials

Advanced Energy Materials, Journal Year: 2021, Volume and Issue: 11(33)

Published: July 14, 2021

Abstract Rechargeable batteries are necessary for the decarbonization of energy systems, but life‐cycle environmental impact assessments have not achieved consensus on impacts producing these batteries. Nonetheless, life cycle assessment (LCA) is a powerful tool to inform development better‐performing with reduced burden. This review explores common practices in lithium‐ion battery LCAs and makes recommendations how future studies can be more interpretable, representative, impactful. First, should focus analyses resource depletion long‐term trends toward resource‐intensive material extraction processing rather than treating known reserves as fixed quantity being depleted. Second, account operations that deviate from industry best‐practices may responsible an outsized share sector‐wide impacts, such artisanal cobalt mining. Third, explore at least 2–3 manufacturing facility scales capture size‐ throughput‐dependent dry room conditioning solvent recovery. Finally, must transition away kg mass functional unit instead make use kWh storage capacity lifetime throughput.

Language: Английский

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