Aluminium alloys and composites for electrochemical energy systems

Progress in Materials Science, Journal Year: 2024, Volume and Issue: 146, P. 101322 - 101322

Published: May 31, 2024

Language: Английский

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Design of advanced composite battery materials based on nanoporous functional materials with different dimensionality

Nano Energy, Journal Year: 2024, Volume and Issue: 130, P. 110161 - 110161

Published: Aug. 24, 2024

Language: Английский

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A Novel Hierarchical Porous Covalent Organic Framework as Multi‐Active‐Center Anode for High‐Performance Sodium Ion Capacitors

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 10, 2024

Abstract Sodium‐ion capacitors (SICs) by virtue of synergizing the merits batteries and supercapacitors are promising in energy‐storage applications. However, they face significant challenges due to mismatch between sluggish Faradaic reaction anode swift non‐Faradaic cathode. Here, in‐situ growth a covalent organic framework (TA‐DH‐COF) with multiple active sites (C = O, C N, C) on graphene aerogels (GA) is reported synthesize novel TA‐DH‐COF/GA hierarchical pores for SICs. Benefiting from synergistic effect molecular design structural engineering, obtained possesses abundant accessible efficient ions electrons transport pathways. Combining theoretical calculations spectroscopic studies, it revealed that Na‐storage mechanism transportation kinetics based reversible Na + coordination through four‐stage process, featuring capacitive energy storage characteristics. When coupled an activated carbon (AC) cathode, TA‐DH‐COF/GA||AC SIC device displays ultrahigh energy/power densities (≈56 Wh kg −1 ≈10 000 W ) long‐term cyclic stability 88.8% capacity retention after 18 cycles, outperforming existing counterparts. This study illuminates potential COF‐based materials SICs achieve high density.

Language: Английский

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Recent Progress in Covalent Organic Frameworks for Cathode Materials

Polymers, Journal Year: 2024, Volume and Issue: 16(5), P. 687 - 687

Published: March 2, 2024

Covalent organic frameworks (COFs) are constructed from small molecules through reversible covalent bonds, and therefore considered a special type of polymer. Small divided into nodes connectors based on their roles in the COF’s structure. The connector generally forms bonds with node two reactive end groups. adjustment length facilitates pore size. Due to diversity COFs have formed large family since synthesis 2005. Among them, COF containing redox active groups such as –C=O–, –C=N–, –N=N– has received widespread attention field energy storage. ordered crystal structure ensures arrangement consistent size pores, which is conducive formation unobstructed ion channels, giving these high-rate performance long cycle life. voltage specific capacity jointly determine density cathode materials. For COFs’ materials, plateau sites’ VS metallic lithium mostly between 2 3 V, great room for improvement. However, there currently no feasible strategy this. Therefore, previous studies mainly improved theoretical materials by increasing number sites. We summarized progress research types recent years found that functional can be six subcategories. According different groups, also Here, we summarize structure, unit, surface area, capacity, range COFs.

Language: Английский

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Superlattice cathodes endow cation and anion co-intercalation for high-energy-density aluminium batteries

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Sept. 16, 2024

Conventionally, rocking-chair batteries capacity primarily depends on cation shuttling. However, intrinsically high-charge-density metal-ions, such as Al

Language: Английский

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