Lignin as Polymer Electrolyte Precursor for Stable and Sustainable Potassium Batteries

ChemSusChem, Journal Year: 2022, Volume and Issue: 15(12)

Published: April 1, 2022

Potassium batteries show interesting peculiarities as large-scale energy storage systems and, in this scenario, the formulation of polymer electrolytes obtained from sustainable resources or waste-derived products represents a milestone activity. In study, lignin-based membrane is designed by crosslinking pre-oxidized Kraft lignin matrix with an ethoxylated difunctional oligomer, leading to self-standing membranes that are able incorporate solvated potassium salts. The in-depth electrochemical characterization highlights wide stability window (up 4 V) and ionic conductivity exceeding 10-3 S cm-1 at ambient temperature. When metal cell prototypes assembled, electrolyte attains significant performances, initial specific capacity 168 mAh g-1 0.05 A excellent operation for more than 200 cycles, which unprecedented outcome biosourced batteries.

Language: Английский

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Recent Advances in Layered Metal‐Oxide Cathodes for Application in Potassium‐Ion Batteries

Advanced Science, Journal Year: 2022, Volume and Issue: 9(18)

Published: April 27, 2022

Abstract To meet future energy demands, currently, dominant lithium‐ion batteries (LIBs) must be supported by abundant and cost‐effective alternative battery materials. Potassium‐ion (KIBs) are promising alternatives to LIBs because KIB materials KIBs exhibit intercalation chemistry like comparable densities. In pursuit of superior batteries, designing developing highly efficient electrode indispensable for meeting the requirements large‐scale storage applications. Despite using graphite anodes in instead sodium‐ion (NIBs), suitable cathodes is extremely challenging has attracted considerable research attention. Among various cathode materials, layered metal oxides have interest owing their tunable stoichiometry, high specific capacity, structural stability. Therefore, recent progress metal‐oxide comprehensively reviewed application fundamental material design, classification, phase transitions, preparation techniques, corresponding electrochemical performance presented. Furthermore, challenges opportunities associated with oxide presented practical KIBs.

Language: 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, Journal Year: 2022, Volume and Issue: 5(3), P. 3677 - 3688

Published: March 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.

Language: Английский

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A review on recent key technologies of lithium-ion battery thermal management: External cooling systems

Results in Engineering, Journal Year: 2022, Volume and Issue: 16, P. 100703 - 100703

Published: Oct. 18, 2022

Recently, due to having features like high energy density, efficiency, superior capacity, and long-life cycle in comparison with the other kinds of dry batteries, lithium-ion batteries have been widely used for storage many applications e.g., hybrid power micro grids, electric vehicles, medical devices. However, performance degradation safety issues exist because abnormal temperature increment cell. So that guarantee enhance its performance; must be preserved during operation a specific range temperature. So, an adequate battery thermal management system (BTMS) is needed reduce maximum battery. In literature, BTMS can classed as either internal or external systems based upon which battery's treated, one. This article introduces updated comprehensive review research interested strategies provide deep understanding recent key technologies BTMS. addition, practical guidelines recommended enhancing applicability such technology.

Language: Английский

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A Two-Dimensional Borophene Supercapacitor

ACS Materials Letters, Journal Year: 2022, Volume and Issue: 4(10), P. 1929 - 1936

Published: Sept. 6, 2022

This work introduces a new two-dimensional (2D) borophene-based (BB) supercapacitor produced by chemical vapor deposition method and used in the facile fabrication of nanosupercapacitors (spin-coating on graphite substrates). Structural properties as-prepared borophene sheets are fully characterized via AFM, HRTEM, FESEM, Raman spectrum 2D is scrutinized discussed, as well electrochemical response fabricated nanosupercapacitors. A high specific capacity (sCap) 350 F g–1 attributed to device according tests, that almost three times higher than previous boron-based supercapacitors surpasses best reported materials including graphene. Based surface charge-storage mechanism, it posited electrical conductivity area electrode highly affect performance supercapacitor. Simulation studies also conducted using joint density-functional theory (JDFT), results which agreement with outcomes experiments. Application newly synthesized BB current study expected be promising energy storage field, inventive class sensing devices, novel sensitive biosensors.

Language: Английский

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