Electrochemical coupling in subnanometer pores/channels for rechargeable batteries

Chemical Society Reviews, Год журнала: 2024, Номер 53(8), С. 3829 - 3895

Опубликована: Янв. 1, 2024

This review categorizes subnanometer pores/channels (SNPCs) from structural perspective and demonstrates electrochemical couplings in SNPCs for batteries while proposing corresponding challenges future research directions.

Язык: Английский

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2D Molecular Sheets of Hydrogen‐Bonded Organic Frameworks for Ultrastable Sodium‐Ion Storage

Advanced Materials, Год журнала: 2021, Номер 33(51)

Опубликована: Окт. 10, 2021

There has been growing research interest in hydrogen bonded organic frameworks (HOFs) by virtue of their great structural crystallinity, large surface areas and porosity. Their potential electrochemical applications, unfortunately, remains elusive because weak bonds would dissociate solution that eventually compromises the integrity. Herein, it is demonstrated this issue may be overcome designing introducing multisite bonding within HOFs. 2D molecular sheets are prepared using diaminotriazole as linkers for first time. In spite thickness (≈1 nm), they chemically stable mechanically robust, have diminished solubility most polar or nonpolar solvents. This solution-stable HOF exhibits an excellent performance Na+ ion storage. particular, enables exceptional cycle life >10 000 cycles at 1 A g-1 , which far superior to other electrode materials. Theoretical simulations indicate activation barrier intralayer interlayer diffusion ions small.

Язык: Английский

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Dispersions of 1,3,4-Oxadiazole-Linked Conjugated Microporous Polymers with Carbon Nanotubes as a High-Performance Electrode for Supercapacitors

ACS Applied Energy Materials, Год журнала: 2022, Номер 5(3), С. 3677 - 3688

Опубликована: Март 8, 2022

In this study, we used classical and simple Sonogashira couplings to construct three 1,3,4-oxadiazole-linked conjugated microporous polymers (OXD-CMPs) through the reaction of 2,5-bis(4-bromophenyl)-1,3,4-oxadiazole (OXD-Br2) as a common partner with structurally diverse units ethynyl triphenylamine, tetraphenylethene, pyrene, respectively. We several methods, both spectroscopic microscopic, characterize OXD-CMPs. Each OXD-CMP displayed high thermal stability. The Py-OXD-CMP possessed pores having sizes in range 1.20–2.25 nm surface area (298 m2 g–1). These OXD-CMPs interacted singled-walled carbon nanotubes (CNTs), stabilized noncovalent π–π interactions, afford OXD-CMP/CNT composites that were suitable for supercapacitor devices. Among our composites, Py-OXD-CMP/CNT composite offered specific capacitance 504 F g–1 superior retention (91.1%) over 2000 cycles.

Язык: Английский

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Ultrastable porous organic/inorganic polymers based on polyhedral oligomeric silsesquioxane (POSS) hybrids exhibiting high performance for thermal property and energy storage

Microporous and Mesoporous Materials, Год журнала: 2021, Номер 328, С. 111505 - 111505

Опубликована: Окт. 19, 2021

Язык: Английский

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Constructing Conjugated Microporous Polymers Containing the Pyrene-4,5,9,10-Tetraone Unit for Energy Storage

ACS Applied Energy Materials, Год журнала: 2022, Номер 5(8), С. 10130 - 10140

Опубликована: Июль 29, 2022

In this work, we reported the rational design and synthesis of two pyrene-4,5,9,10-tetraone (PT)-linked conjugated microporous polymers (PT-CMPs) as organic electrode precursors in energy storage applications, which were prepared through Sonogashira polycondensation reaction ethynyl pyrene (Py-T)/tetraphenylethene (TPE-T) common units with brominated tetraene (PT-Br2) a redox-active unit. We employed microscopic, spectroscopic, N2 adsorption/desorption isotherm analyses to investigate thermal stability, molecular structure, porosity properties both newly obtained PT-CMPs. Thermogravimetric analysis (TGA) revealed that synthesized PT-CMPs feature moderate stability. TheP-PT-CMP exhibited high BET surface area up 300 m2 g–1 total pore volume was 0.34 cm3 g–1, based on sorption analyses. Notably, P-PT-CMP framework displayed very capacitance 400 F superior stability 80% over 5000 cycles at 10 A according supercapacitor performance. addition, have evaluated electrochemical performance symmetric coin supercapacitor, showing great potential for real-life applications electrical (EES).

Язык: Английский

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Spirobifluorene-Based Conjugated Microporous Polymer-Grafted Carbon Nanotubes for Efficient Supercapacitive Energy Storage

ACS Applied Energy Materials, Год журнала: 2022, Номер 5(3), С. 3706 - 3714

Опубликована: Март 8, 2022

Conjugated microporous polymers (CMPs) are promising electrode materials for electrochemical energy storage, but their poor redox activity and electric conductivity limit practical applications. Herein, CMPs obtained from the Buchwald–Hartwig coupling reaction using a spirobifluorene bromide core p-phenylenediamine linker (SACMPs) grafted onto multiwalled carbon nanotube (MWCNT) via one-step in situ polymerization. The as-prepared composite (MWCNT@SACMP) exhibits high surface area of 514 m2 g–1, excellent activity, reasonable conductivity. As expected, MWCNT@SACMP presents specific capacitance 594 F g–1 at current density 1.0 A when content MWCNTs is around 10 wt %, which improved by 252% 236 SACMP. symmetric two-electrode supercapacitor assembled with shows an efficient 254 28.53 W h kg–1 power 900 can retain 84.38% its initial after 6000 cycles. This work thus CMP/MWCNT material storage.

Язык: Английский

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Ultrastable Three-Dimensional Triptycene- and Tetraphenylethene-Conjugated Microporous Polymers for Energy Storage

ACS Applied Energy Materials, Год журнала: 2022, Номер 5(11), С. 14239 - 14249

Опубликована: Окт. 18, 2022

In this study, we used one-pot polycondensation through Suzuki cross-coupling to prepare three three-dimensional (3D) conjugated microporous polymers (CMPs; Try-Ph-Th, Try-Ph-Py, and Try-Ph-TPE) containing triptycene (Try) moieties connected thiophene (Th), pyrene (Py), tetraphenylethene (TPE) units. Thermogravimetric analysis (TGA) revealed that the thermal stabilities of Try-Ph-Py CMP (Td10 = 605 °C; char yield 80 wt %) Try-Ph-TPE 517 71 were higher than those Try-Ph-Th 471 65 other materials. The sample possessed a high specific surface area (up 700 m2 g–1) pore volume (0.45 cm3 g–1), based on N2 adsorption/desorption analyses as well superior electrochemical performance, characterized by capacity 245 F g–1 at current density 0.5 A g–1. CMPs exhibited high-capacity retentions 75.00, 85.71, 92.85%, respectively. addition their extraordinary three-electrode these provided capacitances (53, 84.2, 166 g–1, respectively) when real supercapacitors.

Язык: Английский

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Ultrastable Conjugated Microporous Polymers Containing Benzobisthiadiazole and Pyrene Building Blocks for Energy Storage Applications

Molecules, Год журнала: 2022, Номер 27(6), С. 2025 - 2025

Опубликована: Март 21, 2022

In recent years, conjugated microporous polymers (CMPs) have become important precursors for environmental and energy applications, compared with inorganic electrode materials, due to their ease of preparation, facile charge storage process, π-conjugated structures, relatively high thermal chemical stability, abundance in nature, surface areas. Therefore, this study, we designed prepared new benzobisthiadiazole (BBT)-linked CMPs (BBT-CMPs) using a simple Sonogashira couplings reaction by 4,8-dibromobenzo(1,2-c;4,5-c')bis(1,2,5)thiadiazole (BBT-Br

Язык: Английский

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Carbonized Aminal-Linked Porous Organic Polymers Containing Pyrene and Triazine Units for Gas Uptake and Energy Storage

Polymers, Год журнала: 2023, Номер 15(8), С. 1891 - 1891

Опубликована: Апрель 14, 2023

Porous organic polymers (POPs) have plenteous exciting features due to their attractive combination of microporosity with π-conjugation. Nevertheless, electrodes based on pristine forms suffer from severe poverty electrical conductivity, precluding employment within electrochemical appliances. The conductivity POPs may be significantly improved and porosity properties could further customized by direct carbonization. In this study, we successfully prepared a microporous carbon material (Py-PDT POP-600) the carbonization Py-PDT POP, which was designed using condensation reaction between 6,6′-(1,4-phenylene)bis(1,3,5-triazine-2,4-diamine) (PDA-4NH2) 4,4′,4′′,4′′′-(pyrene-1,3,6,8-tetrayl)tetrabenzaldehyde (Py-Ph-4CHO) in presence dimethyl sulfoxide (DMSO) as solvent. obtained POP-600 high nitrogen content had surface area (up 314 m2 g−1), pore volume, good thermal stability N2 adsorption/desorption data thermogravimetric analysis (TGA). Owing area, as-prepared showed excellent performance CO2 uptake (2.7 mmol g−1 at 298 K) specific capacitance 550 F 0.5 A compared POP (0.24 28 g−1).

Язык: Английский

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Engineering Polymeric Nanofluidic Membranes for Efficient Ionic Transport: Biomimetic Design, Material Construction, and Advanced Functionalities

ACS Nano, Год журнала: 2022, Номер 16(11), С. 17613 - 17640

Опубликована: Ноя. 2, 2022

Design elements extracted from biological ion channels guide the engineering of artificial nanofluidic membranes for efficient ionic transport and spawn biomimetic devices with great potential in many cutting-edge areas. In this context, polymeric can be especially attractive because their inherent flexibility benign processability, which facilitate massive fabrication facile device integration large-scale applications. Herein, state-of-the-art achievements are systematically summarized. Theoretical fundamentals underlying both synthetic introduced. The advances then detailed aspects structural design, material construction, chemical functionalization, emphasizing broad reticular/topological variety as well considerable property tunability. After that, Review expands on examples evolving these into macroscopic potentials addressing compelling issues energy conversion storage systems where is highly desirable. Finally, a brief outlook possible future developments field provided.

Язык: Английский

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