Effects of Sodium Sources on Nonaqueous Precipitation Synthesis of β″-Al₂O₃ and Formation Mechanism of Uniform Ionic Channels

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 16, 2025

High-temperature and long-term sintering of β″-Al2O3 solid electrolyte (Beta″ Alumina Solid Electrolyte, BASE) can easily cause Na2O volatilization. It reduces the (SE) quality, resulting in low ion conductivity electrolyte. is also difficult to form uniform ionic channels. This work designs a simple nonaqueous precipitation through de-etherification heterogeneous polymerization reaction between optimal sodium source ethoxide aluminum isopropoxide synthesize highly active precursor powders with Na-O-Al as skeleton, effectively reducing synthesis temperatures minimizing Importantly, residual organic groups temperature 1150 °C promote formation situ carbon uniformly. In-situ mass fraction about 3.98% will uniformly distributed transport channels diameter 1-3 μm when at 1580 °C. These ensure migration rate ions 0.028 S/cm 300

Language: Английский

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Recent progress in application of polymers in potassium‑sulfur batteries

Journal of Energy Storage, Journal Year: 2025, Volume and Issue: 112, P. 115590 - 115590

Published: Jan. 29, 2025

Language: Английский

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Conductive Carbon Fibrous Interlayer Embedded with MoS₂@CNT Composites for Mitigating Polysulfide Shuttling by Absorption and Catalysis in Lithium–Sulfur Batteries

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: March 21, 2025

Lithium–sulfur batteries (LSBs) have emerged as promising energy storage systems due to their high density, low cost, and environmental friendliness. However, the "shuttle effect" of lithium polysulfides (LiPSs) leads rapid capacity decay poor cycle stability in LSBs, hindering further development application LSBs. In addition, it is difficult for existing strategies provide effective adsorption catalytic properties while simultaneously ensuring ion transport. To address this issue, a composite film made carbon fibers embedded with MoS2@CNT proposed an interlayer between separator cathode. Results show that such conductive can effectively capture LiPSs catalyze transformation. The as-assembled LSBs deliver initial discharge-specific 1179.03 mAh/g at 0.5 C, 1086.33 remains after 100 cycles. During long-term cycling tests, discharge capacities 463.13 rate per 0.07% 500 cycles 3 representing reduction 0.06% compared commercial (0.13%). This work demonstrates potential independent design fibrous films composites enhancing battery performance. not only efficient network accelerating transport but also suppress shuttle effect transformation LiPSs, boosting electrochemical reaction kinetics.

Language: Английский

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Effects of Aluminum Sources on Nonaqueous Precipitation Synthesis of Β'' -Al 2 O 3 , Mechanism And Reaction Process Research

Published: Jan. 1, 2025

β''-Al2O3 solid electrolyte (Beta'' Alumina Solid Electrolyte, BASE) ionic migration channels forming main methods typically rely on poreforming agents, freeze casting, and intermediate-stage sintering. However, it is difficult to form uniformly distributed control the process result. Herein, a novel facile nonaqueous precipitation method promote formation of uniform in BASE designed. In situ formed aluminum isopropoxide acts as polymerization self catalytic promoter de-etherification heterogeneous reaction between sodium ethoxide, with polymer product Na-O-Al skeleton elemental distribution. The in-situ carbon at 1150 ℃ mass fraction 4.11% promotes Na-ions diameter 1~3 µm when sintered 1580 ℃. These bring up rate conductivity 0.028 S/cm 300

Language: Английский

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Effects of aluminum source on nonaqueous precipitation synthesis of β''-Al2O3 and its mechanism research

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 644, P. 237068 - 237068

Published: April 18, 2025

Language: Английский

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Corn-straw derived nitrogen and oxygen codoped carbon host for advanced sodium sulfur batteries by regulating the formation of C S bonds

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 696, P. 137822 - 137822

Published: May 7, 2025

Language: Английский

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Improving microgrid hosting capacity: A two-stage BONMIN solver-based framework for battery storage allocation and operational energy management strategy

PLoS ONE, Journal Year: 2025, Volume and Issue: 20(5), P. e0323525 - e0323525

Published: May 16, 2025

The growing concerns over fossil fuel dependency, environmental impacts, and escalating energy expenses highlight the critical importance of enhancing system efficiency. This study presents a dual-phase optimization approach for improving grid-connected microgrid (μG) operations, focusing on Sodium-Sulfur (NaS) Sodium Nickel Chloride (Na-NiCl₂) battery storage systems. problem was structured as mixed-integer nonlinear programming (MINLP) model resolved using GAMS software with its embedded open-source BONMIN solver. initial phase establishes optimal (BSS) allocation methods to optimize renewable source (RES) self-consumption (SC), increase hosting capacity (HC), minimize operational expenses. Building these results, second develops strategies reduce total operating costs further. research evaluates five scenarios incrementally increasing number BSSs, ranging from one units. Through this systematic analysis, work demonstrates that both quantity type BSS units significantly impact μG costs. most efficient configuration emerged in Case 3, where three Na-NiCl₂ achieved 32.35% reduction Additionally, integration demonstrated notable improvements HC SC rates.

Language: Английский

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Review on Cooperative Catalysis for Room‐Temperature Sodium‐Sulfur Batteries

Small, Journal Year: 2025, Volume and Issue: unknown

Published: May 16, 2025

Abstract The low cost and high energy density characteristics of room‐temperature sodium‐sulfur (RT Na‐S) batteries remarkably promote the development sustainable large‐scale energy‐storage systems. However, there are serious problems with shuttle effect slow conversion kinetics caused by polysulfide dissolution in RT Na‐S batteries, which can lead to decreased coulombic efficiency, rapid capacity degradation, poor rate performance, hindering practical application batteries. Recently, numerous multimodal approaches have been attempted address these issues, thereby promoting cycling stability raising a higher level. is still lack comprehensive systematic summary catalyst design based on cooperative catalysis principle. In this review, advantages, operation mechanisms, main challenges first introduced. After that, latest progress catalysts elaborately summarized, exploring corresponding work mechanisms principles Finally, future research directions for developing high‐performance presented.

Language: Английский

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A systematical review on preparation, microstructure, cyclic parameters, and anchoring NaPSs of cathodes containing electrocatalysts for room-temperature sodium‑sulfur batteries

Applied Energy, Journal Year: 2024, Volume and Issue: 381, P. 125162 - 125162

Published: Dec. 23, 2024

Language: Английский

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