Bridging multiscale interfaces for developing ionically conductive high-voltage iron sulfate-containing sodium-based battery positive electrodes

Nature Communications, Год журнала: 2023, Номер 14(1)

Опубликована: Июнь 22, 2023

Non-aqueous sodium-ion batteries (SiBs) are a viable electrochemical energy storage system for grid storage. However, the practical development of SiBs is hindered mainly by sluggish kinetics and interfacial instability positive-electrode active materials, such as polyanion-type iron-based sulfates, at high voltage. Here, to circumvent these issues, we proposed multiscale interface engineering Na2.26Fe1.87(SO4)3, where bulk heterostructure exposed crystal plane were tuned improve Na-ion performance. Physicochemical characterizations theoretical calculations suggested that Na6Fe(SO4)4 phase facilitated ionic densifying migration channels lowering barriers. The (11-2) Na2.26Fe1.87(SO4)3 promoted adsorption electrolyte solution ClO4- anions fluoroethylene carbonate molecules, which formed an inorganic-rich conductive interphase positive electrode. When tested in combination with presodiated FeS/carbon-based negative electrode laboratory- scale single-layer pouch cell configuration, Na2.26Fe1.87(SO4)3-based enables initial discharge capacity about 83.9 mAh g-1, average voltage 2.35 V specific retention around 97% after 40 cycles 24 mA g-1 25 °C.

Язык: Английский

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“Fast-Charging” Anode Materials for Lithium-Ion Batteries from Perspective of Ion Diffusion in Crystal Structure

ACS Nano, Год журнала: 2024, Номер 18(4), С. 2611 - 2648

Опубликована: Янв. 15, 2024

"Fast-charging" lithium-ion batteries have gained a multitude of attention in recent years since they could be applied to energy storage areas like electric vehicles, grids, and subsea operations. Unfortunately, the excellent density fail sustain optimally while are exposed fast-charging conditions. In actuality, crystal structure electrode materials represents critical factor for influencing performance. Accordingly, employing anode with low diffusion barrier improve "fast-charging" performance battery. this Review, first, principle battery ion path briefly outlined. Next, application prospects various structures evaluated search stable, safe, long lifespan, solving remaining challenges associated high power safety. Finally, summarizing research advances typical materials, including preparation methods advanced morphologies latest techniques ameliorating Furthermore, an outlook is given on ongoing breakthroughs batteries. Intercalated (niobium-based, carbon-based, titanium-based, vanadium-based) favorable cycling stability predominantly limited by undesired electronic conductivity theoretical specific capacity. addressing electrical these constitutes effective trend realizing fast-charging. The conversion-type transition metal oxide phosphorus-based capacity typically undergoes significant volume variation during charging discharging. Consequently, alleviating expansion significantly fulfill

Язык: Английский

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Unlocking Charge Transfer Limitations for Extreme Fast Charging of Li‐Ion Batteries

Angewandte Chemie International Edition, Год журнала: 2022, Номер 62(4)

Опубликована: Ноя. 16, 2022

Extreme fast charging (XFC) of high-energy Li-ion batteries is a key enabler electrified transportation. While previous studies mainly focused on improving Li ion mass transport in electrodes and electrolytes, the limitations charge transfer across electrode-electrolyte interfaces remain underexplored. Herein we unravel how kinetics dictates rechargeability cells. cathode-electrolyte interface found to be rate-limiting during XFC, but energy barrier at both cathode anode have reduced simultaneously prevent plating, which achieved through electrolyte engineering. By unlocking limitations, 184 Wh kg-1 pouch cells demonstrate stable XFC (10-min 80 %) otherwise unachievable, lifetime 245 21700 quintupled (25-min %).

Язык: Английский

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Immobilizing Redox‐Active Tricycloquinazoline into a 2D Conductive Metal–Organic Framework for Lithium Storage

Angewandte Chemie International Edition, Год журнала: 2021, Номер 60(46), С. 24467 - 24472

Опубликована: Сен. 14, 2021

Heteroaromatic-conjugated aromatic molecules have inspired numerous interests in rechargeable batteries like Li-ion batteries, but were limited by low conductivity and easy dissolution electrolytes. Herein, we immobilize a nitrogen-rich molecule tricycloquinazoline (TQ) CuO4 unit into two-dimensional (2D) conductive metal-organic framework (MOF) to unlock their potential for Li+ storage. TQ was identified redox activity with the first time. With synergistic effect of unit, 2D MOF, named Cu-HHTQ (HHTQ=2,3,7,8,12,13-hexahydroxytricycloquinazoline), can facilitate /e- transport ensure resilient electrode, resulting high capacity 657.6 mAh g-1 at 600 mA extraordinary high-rate capability impressive cyclability. Our findings highlight an efficient strategy constructing electrode materials energy storage combining multiple redox-active moieties MOFs.

Язык: Английский

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State of the art of lithium-ion battery material potentials: An analytical evaluations, issues and future research directions

Journal of Cleaner Production, Год журнала: 2023, Номер 394, С. 136246 - 136246

Опубликована: Фев. 2, 2023

Язык: Английский

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