3.3 V customizable, recyclable, and remanufacturable flexible symmetric supercapacitors

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 179025 - 179025

Published: Feb. 1, 2025

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A Practical High‐Performance Lithium‐Ion Capacitor Fabricated with Dual Graphene‐Based Electrode Materials

Advanced Materials Technologies, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 16, 2025

Abstract Lithium‐ion capacitors (LICs) hold great promise by merging the benefits of lithium‐ion batteries and supercapacitors. However, their performance is frequently constrained a disparity in kinetic properties cathode anode. This study introduces dual graphene‐based approach aimed at improving efficiency functionality LICs demonstrates successful large‐scale production graphene (SHSG) using self‐propagating high‐temperature synthesis method. In cathode, SHSG forms continuous network, reducing interfacial resistance, enhancing conductivity achieving capacity 85.9 mAh g −1 . anode, improves ion diffusion reaction interfaces, increasing from 247.9 to 286.6 A full LIC cell assembled with 10% both electrodes peak energy density 106.3 Wh kg retains 33 4.4 kW , which calculated based on total mass electrodes. Additionally, 1100 F pouch developed, showcasing its potential for practical storage. work underscores transformative role optimizing advancing storage technologies.

Language: Английский

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Fabrication of pitch-derived hard carbon via bromination-assisted pyrolysis strategy for sodium-ion batteries

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

Published: Jan. 1, 2025

Pitch-derived hard carbon materials are considered one of the most promising anodes for sodium-ion batteries (SIBs) due to their low cost and high yields. However, they largely limited by inferior specific capacity rate capability, resulting from easy graphitization pitch precursor during high-temperature carbonization. Herein, a simple bromination modification coupled with pyrolysis strategy was proposed fabricate pitch-derived (BHC-x), aiming engineer microstructure optimize electrochemical performance SIBs. The detailed experimental investigations demonstrated that brominated obtained via hydrothermal treatment underwent cross-linking polycondensation in presence bromine species at 350 °C, thereby forming unique disordered closed structure process. As result, optimized BHC-1500, rich defect sites suitable interlayer spacing 0.358 nm, exhibited reversible 250.0 mA h g-1 0.1 A an initial coulombic efficiency (ICE) 79.8%. It still maintained 150.0 5 g-1, outperforming unbrominated counterparts (152.1 g-1). This work proposes new insights into optimization pitch-based high-performance

Language: Английский

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Development Prospect of Energy Storage Technology in Inner Mongolia Under the Goal of Carbon Peaking and Carbon Neutrality

E3S Web of Conferences, Journal Year: 2025, Volume and Issue: 625, P. 01026 - 01026

Published: Jan. 1, 2025

Driven by the “dual carbon” goals, energy storage technology, as a key measure to promote transformation and ensure stable operation of power system, has received increasing attention. Due its abundant renewable resources vast land resources, Inner Mongolia become area for development technology. This paper summarizes current research status future prospects technology in Mongolia, with particular focus on pumped electrochemical technologies.

Language: Английский

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Patterned Design of the Electric Heating Element Achieves Efficient Joule Heating

Advanced Engineering Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 29, 2025

Electric heating technology is critical for aerospace de‐icing systems due to its efficiency and controllability. However, traditional electric elements such as resistance wires metal coatings have low thermal conductivity, poor high‐temperature resistance, insufficient structural flexibility, which severely limit their application in composites. This study introduces carbon nanotube (CNT)/nanocellulose fiber (CNF) composite films a solution. CNTs, with exceptional stability, mechanical strength, enhance efficiency. Through the patterned design, further optimized, heat distribution during process made more uniform. Experimental results show that when mass ratio of CNTs CNFs 10:1, conductivity material reaches 2.68 W/(m·K), it exhibits significant Joule effect. When power density 0.4 W cm −1 2 , CNTs/CNFs (10:1) film can rapidly reach 140.6 °C after 10 s heating. Additionally, use fiber‐reinforced composites improves durability system, allowing system operate stably under high‐frequency cycles, significantly enhancing reliability service life. high capability allows rapid local temperature elevation, reducing energy consumption boosting

Language: Английский

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