Another Way to Realize LiMn2O4 as a Solid Electrolyte DOI Open Access

Jingzhen Du,

Zewen Sun,

Bohao Peng

et al.

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

Published: Dec. 19, 2024

Abstract The development and application of solid‐state electrolytes (SSEs) play a crucial role in advancing lithium metal batteries (LMBs). Consequently, the search for high‐performance, economic, easily fabricated SSEs has become prevailing trend. In this work, we explore an alternative approach to design traditional commercial lithium‐ion cathode material, spinel‐type LiMn 2 O 4 (LMO) as SSE. By blending LMO with poly(vinylidene difluoride) combining two layers polyethylene (PE) film on top bottom, effectively reduce its high electronic conductivity, thereby creating PE/LMO/PE SSE demonstrates ionic conductivity (3.15 × 10 −4 S cm −1 at 35°C), low (7.31 −11 ), good interfacial contact stability both anode, LiFePO nickel‐rich Li[Ni 0.8 Co 0.1 Mn ]O cathodes. This study offers new direction electrochemically active material LMO, while providing simple feasible solution SSEs. Additionally, it opens up perspectives selecting high‐performance use LMBs, paving economic path toward commercialization batteries.

Language: Английский

Direct Laser Scribing of All‐Solid‐State In‐Plane Proton Microsupercapacitors on Ionic Covalent Organic Framework Films DOI Open Access
X Li, Dong‐Dong Han,

Ye‐Can Zhang

et al.

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

Published: March 10, 2025

Abstract Proton microsupercapacitors (MSCs) are promising energy storage devices for cutting‐edge applications. However, all‐solid‐state designs face challenges due to the need synergistic innovations in electrolytes, electrodes, and interface engineering. Herein, direct laser scribing of metal‐free in‐plane proton MSCs reported on ionic covalent organic framework (iCOF) films. The solid‐state AA‐stacked iCOF electrolytes with perfect 2D channels ( d = 0.33 nm) prepared by vacuum filtration, exhibiting conductivities from 0.23 4.7 mS cm −1 depending humidity. Furthermore, patterned carbon electrodes fabricated via situ carbonization iCOFs, forming a seamless electrolyte‒electrode interface. To reveal photophysical features insulating iCOFs conductive laser‐treated femtosecond transient absorption experiments carried out. multiphysics simulation indicates that electric field is uniformly distributed at electrode−electrolyte Notably, resulting MSC exhibits an ultrahigh specific capacitance (≈10.13 mF −2 101.3 F −3 ), high volumetric density (2.52 mWh rapid scan rate (1000 mV s excellent cycling stability (no degradation after 50 000 cycles). This approach provides high‐performance MSCs, revealing great potential applications intelligent microsystems.

Language: Английский

Citations

2
Covalent organic frameworks and their composites as enhanced energy storage materials DOI

Divya Divya,

H K Mishra,

Ritambhara Jangir

et al.

Chemical Communications, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Fabrication, and preparation methods of COFs along with a complete review the last one decade's progress in field energy storage conversion devices, notably batteries, capacitors fuel cells, has been presented.

Language: Английский

Citations

1
Geomimetic Interfacial Hydrothermal Synthesis of Crystalline Ionic Vinylene‐Linked Covalent Organic Frameworks DOI Open Access
Dongchuang Wu, Hao Wang, Lun Wang

et al.

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

Published: Feb. 5, 2025

Abstract Ionic vinylene‐linked covalent organic frameworks (ivCOFs) with ionic characteristics and highly conjugated structures have been promising functional materials. However, both the number of reported COFs its synthetic methodologies still be limited. Herein, two new kinds (named as COF‐NUC‐1 COF‐NUC‐2) are synthesized by novel geomimetic interfacial hydrothermal synthesis for first time. Due to insolubility aldehyde monomers in water, a molecule/water interface is created, where water‐soluble N‐ethyl‐2,4,6‐trimethylpyridinium bromide (ETMP‐Br) can react via interface‐confined Knoevenagel condensation reaction. The resultant show high crystallinity, chemical stability, hydrophilic nature. Benefiting from electron‐withdrawing redox properties pyridinium salts, as‐fabricated memristor based on film shows stable nonvolatile memory effects, featuring ON/OFF current ratio 0.66 × 10 3 small switch‐on voltage −0.68 V. This work expands realm ivCOFs deepens understanding synthesis.

Language: Английский

Citations

0
Membranes constructing with excellent performances for aqueous zinc-ion battery: A review DOI

Juan Wu,

Mengyao Li, Haoyu Li

et al.

Coordination Chemistry Reviews, Journal Year: 2025, Volume and Issue: 531, P. 216478 - 216478

Published: Feb. 8, 2025

Language: Английский

Citations

0
Anion-Exchange Strategy for Ru/RuO2-Embedded N/S-Co-Doped Porous Carbon Composites for Electrochemical Nitrogen Fixation DOI Open Access

Shahzeb Ali Samad,

Xuanzi Ye,

Zhiya Han

et al.

Polymers, Journal Year: 2025, Volume and Issue: 17(4), P. 543 - 543

Published: Feb. 19, 2025

Ionic porous polymers have been widely utilized efficiently to anchor various metal atoms for the preparation of metal-embedded heteroatom-doped carbon composites as active materials electrocatalytic applications. However, rational design heteroatom and elements in HPC-based remains a significant challenge, due tendency aggregation nanoparticles during pyrolysis. In this study, nitrogen (N)- sulfur (S)-enriched ionic covalent organic framework (iCOF) incorporating viologen thieno[3,4-b] thiophene (TbT) was constructed via Zincke-type polycondensation. The synthesized iCOF possesses crystalline structure with pore size 3.05 nm, low optical band gap 1.88 eV, superior conductivity 10-2.672 S cm-1 at 333 K, confirming conjugated nature our novel iCOF. By applying precursor, ruthenium ruthenium(IV) oxide (Ru/RuO2) nanoparticle-embedded N/S-co-doped composite (NSPC-Ru) prepared by using two-step sequence anion-exchange pyrolysis processes. electrochemical reduction reaction (eNRR) application, NSPC-Ru achieves an impressive NH3 yield rate 32.0 μg h-1 mg-1 Faradaic efficiency 13.2% -0.34 V vs. RHE. Thus, innovative approach proposes new route iCOF-derived enhanced NRR performance.

Language: Английский

Citations

0
Mass Transport Based on Covalent Organic Frameworks DOI
Jianwei Yang, Bo Wang, Xiao Feng

et al.

Accounts of Chemical Research, Journal Year: 2025, Volume and Issue: unknown

Published: April 11, 2025

ConspectusMass transport is fundamental to biological systems and industrial processes, governing chemical reactions, substance exchange, energy conversion across various material scales. In systems, ion transport, such as proton migration through voltage-gated channels, regulates cellular potential, signaling, metabolic balance. transporting molecules solid, liquid, or gas phases dictates reactant contact diffusion rates, directly impacting reaction efficiency conversion. Optimizing these processes necessitates the design of efficient interfaces channels enhance mass transport.Crystalline porous materials, particularly covalent organic frameworks (COFs), offer an excellent platform for investigating optimizing transport. With ordered, pre-engineered nano- subnanometer pores, COFs enable confined garnered significant attention conversion, catalysis, drug delivery, adsorption, separation applications. Deeper investigations into mechanism in at molecular level are crucial advancing materials science, chemistry, engineering.Our group focuses on explore multisubstance cooperative mechanisms structure-activity relationships ions, water, gases. We have expanded linker chemistry by developing irreversible α-aminoketone-linked introducing Suzuki coupling COF preparation. proposed strategies side-chain-induced dipole-facilitated stacking prenucleation slow growth achieve record large pore sizes highly oriented nanochannels. implemented exfoliation interwoven strategy accelerate complex interfaces, refined permeability sieve-based membranes precise size engineering, elucidated effects hydrophobicity/hydrophilicity water phase transition diffusion. Building insights, we designed novel open framework ionomers tailor microenvironment electrocatalytic uncovered multiple mechanisms. The synergistically enhanced three-phase effectively modulates electrochemical CO2 reduction pathway significantly boosts power density proton-exchange membrane fuel cells (PEMFCs).In this Account, summarize recent advances COF-based emphasizing nanochannel construction strategies, including linkage, size, orientation, function gradient modulations. discuss functional COFs, correlations between structure properties, their applications separation, storage, catalysis. Finally, outline current challenges future opportunities synthetic mechanisms, By understanding phenomena from microscopic particles macroscopic scales, Account aims provide aligning with offering insights catalytic performance.

Language: Английский

Citations

0
An Alkynyl-Based Olefin-linked Covalent Organic Framework as an Anode Material for Potassium-ion Batteries DOI Creative Commons

Bertha Lotsi,

Luke Schkeryantz, Cuong Dang

et al.

Polymer, Journal Year: 2025, Volume and Issue: unknown, P. 128453 - 128453

Published: April 1, 2025

Language: Английский

Citations

0
Processable and Recyclable Covalent Organic Framework Gel Electrolytes DOI
Zhiwen Fan, Juntao Tang, Wei Zhang

et al.

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

Published: April 25, 2025

Abstract Covalent organic framework (COF)‐based electrolytes with abundant ordered channels and accessible interaction sites have shown great potential in energy storage transformation, although their practical applications are strongly impeded by inherent insolubility non‐melt processability. Developing processable COF gel recycling them remains a formidable challenge. In this study, the processing of to gels demonstrated through interlayer manipulation enable solution‐reconstruction for first time, inspired working principle wedges. Good solution‐processability powders strong acid mediums is achieved inserting oxygen atoms into its promote charge repulsion. This modification enabled readily dispersable as colloidal nanosheets an aqueous solution trifluoroacetic (TFA). Starting from here, modulated competitive interactions among TFA, COF, water molecules, reconfigure materials between gelified colloidally dispersed states. The reconfigured maintains mechanical properties long cycle life electrolyte battery (>800 h). approach realizes can recycle out repeated use, offering new insights strategies preparation sustainable recycling.

Language: Английский

Citations

0
Quasi-Solid-State Electrolytes: Bridging the gap between solid and liquid electrolytes for Zinc-Ion batteries DOI
Tao Xue,

Jinpeng Guan,

Yongbiao Mu

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162994 - 162994

Published: April 1, 2025

Language: Английский

Citations

0
Another Way to Realize LiMn2O4 as a Solid Electrolyte DOI Open Access

Jingzhen Du,

Zewen Sun,

Bohao Peng

et al.

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

Published: Dec. 19, 2024

Abstract The development and application of solid‐state electrolytes (SSEs) play a crucial role in advancing lithium metal batteries (LMBs). Consequently, the search for high‐performance, economic, easily fabricated SSEs has become prevailing trend. In this work, we explore an alternative approach to design traditional commercial lithium‐ion cathode material, spinel‐type LiMn 2 O 4 (LMO) as SSE. By blending LMO with poly(vinylidene difluoride) combining two layers polyethylene (PE) film on top bottom, effectively reduce its high electronic conductivity, thereby creating PE/LMO/PE SSE demonstrates ionic conductivity (3.15 × 10 −4 S cm −1 at 35°C), low (7.31 −11 ), good interfacial contact stability both anode, LiFePO nickel‐rich Li[Ni 0.8 Co 0.1 Mn ]O cathodes. This study offers new direction electrochemically active material LMO, while providing simple feasible solution SSEs. Additionally, it opens up perspectives selecting high‐performance use LMBs, paving economic path toward commercialization batteries.

Language: Английский

Citations

1