Iron-based metal-organic frameworks and their derivatives for high-performance supercapacitors

Next Materials, Journal Year: 2024, Volume and Issue: 7, P. 100362 - 100362

Published: Sept. 3, 2024

Language: Английский

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Permselective Metal–Organic Framework-Based Separators via In Situ Self-Assembly for High-Performance Lithium Metal Batteries

Energy & Fuels, Journal Year: 2024, Volume and Issue: 38(18), P. 18054 - 18061

Published: Sept. 3, 2024

Lithium metal batteries (LMBs) have garnered considerable interest because of their substantial theoretical capacity. However, development is hampered due to the grave issue hazardous lithium dendrites arising from inhomogeneous (Li) electrodeposition. An effective strategy for addressing dendritic growth regulate migration behavior target molecules and/or ions during cycling. Herein, we demonstrate an in situ self-assembly where metal–organic frameworks (MOFs) grow on a polypropylene separator homogeneously along certain orientation. By integration abundant functional groups and secondary structural units, continuous, uniform, defect-free distribution MOFs substrate membrane was achieved. The intrinsic subnanochannels significantly benefit transfer Li+ restrain chaotic movement ions, resulting high number (0.86) enhanced ionic conductivity. Consequently, highly stable plating/stripping observed, leading efficacious deposition cycling over 1200 h at 2 mAh cm–2. Additionally, permselective MOF-based with tunable channel sizes promises broad applicability LMBs. Our approach paves new pathway strategies separators, which expected help develop advanced LMBs energy density long-life performance.

Language: Английский

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Organic‐Inorganic Dual‐Network Composite Separators for Lithium Metal Batteries

Macromolecular Rapid Communications, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 14, 2024

Abstract The suboptimal ionic conductivity of commercial polyolefin separators exacerbates uncontrolled lithium dendrite formation, deteriorating metal battery performance and posing safety hazards. To address this challenge, a novel organic‐inorganic composite separator designed is prepared to enhance ion transport effectively suppress growth. This features thermally stable, highly porous poly(m‐phenylene isophthalamide) (PMIA) electrospun membrane, coated with ultralong hydroxyapatite (HAP) nanowires that promote “ion flow redistribution.” synergistic effects the nitrogen atoms in PMIA hydroxyl groups HAP hinder anion while facilitating efficient Li + conduction. Meanwhile, optimized unilateral pore structure ensures uniform transport. These results show 19 µm‐thick HAP/PMIA achieves remarkable (0.68 mS cm −1 ) high lithium‐ion transference number (0.51). Lithium symmetric cells using exhibit lifespan exceeding 1000 h low polarization, significantly outperforming polypropylene separators. Furthermore, enables LiFePO 4 ||Li achieve an enhanced retention 97.3% after 200 cycles at 1 C demonstrates impressive rate capability discharge capacity 72.7 mAh g 15 C.

Language: Английский

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Synergic Effect between La-Mof and Mxene: Revolutionizing Tpu with Improved Mechanical Strength and Fire Safety

Published: Jan. 1, 2024

Language: Английский

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The chiral nematic liquid crystal of hydroxypropyl methylcellulose coated on separator: Break through safety of LIBs with high electrochemical performances

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 682, P. 784 - 794

Published: Dec. 6, 2024

Language: Английский

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Nanocubic transition metal sulfides (FeMn)S2@NC synthesised by MOFs facily for supercapacitors

Vacuum, Journal Year: 2024, Volume and Issue: 231, P. 113819 - 113819

Published: Nov. 8, 2024

Language: Английский

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