keyword
https://read.qxmd.com/read/38534617/synthesis-and-properties-of-polyvinylidene-fluoride-hexafluoropropylene-copolymer-li-6-ps-5-cl-gel-composite-electrolyte-for-lithium-solid-state-batteries
#1
JOURNAL ARTICLE
Xinghua Liang, Xueli Shi, Lingxiao Lan, Yunmei Qing, Bing Zhang, Zhijie Fang, Yujiang Wang
Gel electrolytes for lithium-ion batteries continue to replace the organic liquid electrolytes in conventional batteries due to their advantages of being less prone to leakage and non-explosive and possessing a high modulus of elasticity. However, the development of gel electrolytes has been hindered by their generally low ionic conductivity at room temperature and high interfacial impedance with electrodes. In this paper, a poly (vinylidene fluoride)-hexafluoropropylene copolymer (PVdF-HFP) with a flexible structure, Li6 PS5 Cl (LPSCl) powder of the sulfur-silver-germanium ore type, and lithium perchlorate salt (LiClO4 ) were prepared into sulfide gel composite electrolyte films (GCEs) via a thermosetting process...
March 14, 2024: Gels
https://read.qxmd.com/read/38534597/poly-vinylidene-fluoride-hexafluoropropylene-lithium-titanium-aluminum-phosphate-based-gel-polymer-electrolytes-synthesized-by-immersion-precipitation-for-high-performance-lithium-metal-batteries
#2
JOURNAL ARTICLE
Xuanan Lu, Jianguo Luo, Lingxiao Lan, Bing Zhang, Zhikun Chen, Yujiang Wang, Xinghua Liang, Qinglie Mo
Gel polymer electrolytes (GPEs) have high safety and excellent electrochemical performance, so applying GPEs in lithium batteries has received much attention. However, their poor lithium ion transfer number, cycling stability, and low room temperature ionic conductivity seriously affect the utilization of gel polymer electrolytes. This paper successfully synthesized flexible poly (vinylidene fluoride-hexafluoropropylene)-lithium titanium aluminum phosphate (PVDF-HFP-LATP) gel polymer electrolytes using the immersion precipitation method...
March 4, 2024: Gels
https://read.qxmd.com/read/38533021/composite-polymer-electrolyte-based-on-poly-vinylidene-fluoride-hexafluoropropylene-pvdf-hfp-for-solid-state-batteries
#3
JOURNAL ARTICLE
Zhongran Yao, Fen Qi, Lin Ye, Qiang Sun, Xiaoyong Gu, Xiaowei Yang, Kongjun Zhu
Using solid-state electrolytes (SSEs) with excellent thermal and electrical stability to replace liquid electrolytes, and assembling solid-state lithium-ion batteries (SSLIBs) is considered the best solution to these safety issues. However, it is difficult for a single electrolyte to have the characteristics of high ionic conductivity, low interface resistance, and high stability of the counter electrode at the same time. In this work, the composite polymer electrolyte membrane (CPE) of inorganic Li1.3 Al0...
March 30, 2024: Heliyon
https://read.qxmd.com/read/38532249/zwitterionic-polymer-ionogel-electrolytes-supported-by-coulombic-cross-links-impacts-of-alkali-metal-cation-identity
#4
JOURNAL ARTICLE
Mossab K Alsaedi, Meron Y Tadesse, Venkat Ganesan, Matthew J Panzer
Zwitterionic (ZI) polymers enable the formation of noncovalent cross-links within ionic liquid electrolytes (ILEs) to create nonflammable, mechanically robust, and highly conductive ionogel electrolytes. In this study, ZI homopolymer poly(2-methacryloyloxyethyl phosphorylcholine) [poly(MPC)] scaffolds are synthesized in situ within lithium and/or sodium salt-based ILEs to construct a series of ionogels that contain between 3 and 15 wt % poly(MPC). Room-temperature ionic conductivity values of these ionogels are found to vary between approximately 1...
March 26, 2024: Journal of Physical Chemistry. B
https://read.qxmd.com/read/38530048/hybrid-hydrogen-bonding-strategy-to-construct-instantaneous-self-healing-highly-elastic-ionohydrogel-for-multi-functional-electronics
#5
JOURNAL ARTICLE
Hongfei Huang, Lijie Sun, Luzhi Zhang, Yalin Zhang, Youwei Zhang, Shunan Zhao, Shijia Gu, Wei Sun, Zhengwei You
Gels show great promise for applications in wearable electronics, biomedical devices, and energy storage systems due to their exceptional stretchability and adjustable electrical conductivity. However, the challenge lies in integrating multiple functions like elasticity, instantaneous self-healing, and a wide operating temperature range into a single gel. To address this issue, a hybrid hydrogen bonding strategy to construct gel with these desirable properties is proposed. The intricate network of hybrid strong weak hydrogen bonds within the polymer matrix enables these ionohydrogel to exhibit remarkable instantaneous self-healing, stretching up to five times their original length within seconds...
March 26, 2024: Small
https://read.qxmd.com/read/38527200/the-electrochemistry-of-stable-sulfur-isotopes-versus-lithium
#6
JOURNAL ARTICLE
Xue-Ting Li, Yao Zhao, Yu-Hui Zhu, Wen-Peng Wang, Ying Zhang, Fuyi Wang, Yu-Guo Guo, Sen Xin, Chunli Bai
Sulfur in nature consists of two abundant stable isotopes, with two more neutrons in the heavy one (34 S) than in the light one (32 S). The two isotopes show similar physicochemical properties and are usually considered an integral system for chemical research in various fields. In this work, a model study based on a Li-S battery was performed to reveal the variation between the electrochemical properties of the two S isotopes. Provided with the same octatomic ring structure, the cyclo -34 S8 molecules form stronger S-S bonds than cyclo -32 S8 and are more prone to react with Li...
April 2, 2024: Proceedings of the National Academy of Sciences of the United States of America
https://read.qxmd.com/read/38526508/reactive-carbon-capture-enables-co-2-electrolysis-with-liquid-feedstocks
#7
JOURNAL ARTICLE
Douglas J D Pimlott, Yongwook Kim, Curtis P Berlinguette
ConspectusThe electrochemical reduction of carbon dioxide (CO2RR) is a promising strategy for mitigating global CO2 emissions while simultaneously yielding valuable chemicals and fuels, such as CO, HCOO- , and C2 H4 . This approach becomes especially appealing when integrated with surplus renewable electricity, as the ensuing production of fuels could facilitate the closure of the carbon cycle. Despite these advantages, the realization of industrial-scale electrolyzers fed with CO2 will be challenged by the substantial energy inputs required to isolate, pressurize, and purify CO2 prior to electrolysis...
March 25, 2024: Accounts of Chemical Research
https://read.qxmd.com/read/38526168/constructing-sequential-type-ii-heterojunction-cqds-bi-2-s-3-tinbo-photoanode-with-superior-charge-transfer-capability-toward-stable-photoelectrochemical-water-splitting
#8
JOURNAL ARTICLE
Yanjie Pan, Zhenbiao Dong, Dongmei Qin, Baopeng Liu, Lulu Cui, Sheng Han, Hualin Lin
Efficient charge transfer and light-trapping units are pivotal prerequisites in the realm of Ti-based photoanode photoelectrochemical (PEC) water splitting. In this work, we successfully synthesized a ternary carbon quantum dots/Bi2 S3 quantum dots/Nb-doped TiO2 nanotube arrays (CQDs/Bi2 S3 /TiNbO) composite photoanode for PEC water splitting. CQDs/Bi2 S3 /TiNbO composite photoanode exhibited a considerably elevated photocurrent density of 8.80 mA cm-2 at 1.23 V vs the reversible hydrogen electrode, which was 20...
March 25, 2024: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/38522089/status-and-prospect-of-two-dimensional-materials-in-electrolytes-for-all-solid-state-lithium-batteries
#9
REVIEW
Xuexia Lan, Na Luo, Zhen Li, Jing Peng, Hui-Ming Cheng
Replacing liquid electrolytes and separators in conventional lithium-ion batteries with solid-state electrolytes (SSEs) is an important strategy to ensure both high energy density and high safety. Searching for fast ionic conductors with high electrochemical and chemical stability has been the core of SSE research and applications over the past decades. Based on the atomic-level thickness and infinitely expandable planar structure, numerous two-dimensional materials (2DMs) have been exploited and applied to address the most critical issues of low ionic conductivity of SSEs and lithium dendrite growth in all-solid-state lithium batteries...
March 24, 2024: ACS Nano
https://read.qxmd.com/read/38520380/stabilizing-solid-electrolyte-interphase-on-liquid-metal-via-dynamic-hydrogel-derived-carbon-framework-encapsulation
#10
JOURNAL ARTICLE
Hanning Zhang, Wei Zhang, Dan Luo, Siyu Zhang, Lingqiao Kong, Huan Xia, Qian Xie, Gang Xu, Zhongwei Chen, Zhengming Sun
Eutectic gallium-indium liquid metal (EGaIn-LM), with a considerable capacity and unique self-healing properties derived from its intrinsic liquid nature, has gained tremendous attention for lithium-ion batteries (LIBs) anode applications. However, the fluidity of the LM could trigger continuous consumption of the electrolyte, and its liquid-solid transition during the lithiation/de-lithiation process may result in the rupture of the solid electrolyte interface (SEI). Herein, we employed LM as an initiator to in-situ assemble the 3D hydrogel framework for dynamic encapsulating itself, the LM nanoparticles could be homogeneously confined into the hydrogel-derived carbon framework (HDC) after calcination...
March 23, 2024: Advanced Materials
https://read.qxmd.com/read/38517395/dual-parasitic-effect-enables-highly-reversible-zn-metal-anode-for-ultralong-25-000-cycles-aqueous-zinc-ion-batteries
#11
JOURNAL ARTICLE
Chenhui Ma, Xin Wang, Wenqiang Lu, Konghua Yang, Nan Chen, Heng Jiang, Chunzhong Wang, Huijuan Yue, Dong Zhang, Fei Du
The use of electrolyte additives is an efficient approach to mitigating undesirable side reactions and dendrites. However, the existing electrolyte additives do not effectively regulate both the chaotic diffusion of Zn2+ and the decomposition of H2 O simultaneously. Herein, a dual-parasitic method is introduced to address the aforementioned issues by incorporating 1-ethyl-3-methylimidazolium trifluoromethanesulfonate ([EMIm]OTf) as cosolvent into the Zn(OTf)2 electrolyte. Specifically, the OTf- anion is parasitic in the solvent sheath of Zn2+ to decrease the number of active H2 O...
March 22, 2024: Nano Letters
https://read.qxmd.com/read/38516087/block-copolymer-synthesis-in-ionic-liquid-via-polymerisation-induced-self-assembly-a-convenient-route-to-gel-electrolytes
#12
JOURNAL ARTICLE
Georgia L Maitland, Mingyu Liu, Thomas J Neal, James Hammerton, Yisong Han, Stephen D Worrall, Paul D Topham, Matthew J Derry
We report for the first time a reversible addition-fragmentation chain transfer polymerisation-induced self-assembly (RAFT-PISA) formulation in ionic liquid (IL) that yields worm gels. A series of poly(2-hydroxyethyl methacrylate)- b -poly(benzyl methacrylate) (PHEMA- b -PBzMA) block copolymer nanoparticles were synthesised via RAFT dispersion polymerisation of benzyl methacrylate in the hydrophilic IL 1-ethyl-3-methyl imidazolium dicyanamide, [EMIM][DCA]. This RAFT-PISA formulation can be controlled to afford spherical, worm-like and vesicular nano-objects, with free-standing gels being obtained over a broad range of PBzMA core-forming degrees of polymerisation (DPs)...
March 20, 2024: Chemical Science
https://read.qxmd.com/read/38505384/structural-morphological-electrical-and-dielectric-properties-of-na-2-cu-5-si-2-o-7-2-for-assibs
#13
JOURNAL ARTICLE
Mohamed Ben Bechir, Mehdi Akermi
Solid inorganic electrolyte materials are fundamental components for constructing all-solid-state sodium-ion batteries. These solid electrolytes offer considerable benefits related to safety, electrochemical performance, and mechanical stability in comparison to liquid organic electrolyte systems. This study investigates the sodium ion conduction mechanism and relaxation kinetics in the sorosilicate material Na2 Cu5 (Si2 O7 )2 , a potential solid electrolyte, using impedance spectroscopy. Analysis of the DC conductivity data demonstrates that sodium ion mobility follows Arrhenius behavior with a thermal activation energy barrier of 1...
March 14, 2024: RSC Advances
https://read.qxmd.com/read/38504492/effects-of-temperature-and-dc-electric-fields-on-perfluorooctanoic-acid-sorption-kinetics-to-activated-carbon
#14
JOURNAL ARTICLE
Yongping Shan, Huijuan Hao, Yuzhou Yin, Naiwen Hu, Mingxiu Zhan, Dong Ma, Yongguang Yin, Wentao Jiao, Lukas Y Wick
Sorption to activated carbon is a common approach to reducing environmental risks of waterborne perfluorooctanoic acid (PFOA), while effective and flexible approaches to PFOA sorption are needed. Variations in temperature or the use of electrokinetic phenomena (electroosmosis and electromigration) in the presence of external DC electric fields have been shown to alter the contaminant sorption of contaminants. Their role in PFOA sorption, however, remains unclear. Here, we investigated the joint effects of DC electric fields and the temperature on the sorption of PFOA on activated carbon...
March 19, 2024: Environmental Science & Technology
https://read.qxmd.com/read/38501047/ionic-liquid-electrolyte-selection-for-high-voltage-supercapacitors-in-high-temperature-applications
#15
JOURNAL ARTICLE
Ahmed Bahaa, Ayoob Alhammadi, Kallidanthiyil Chellappan Lethesh, Rahmat Agung Susantyoko, Musbaudeen O Bamgbopa
Systematic analyses of electrolyte physicochemical properties are important to screen ionic liquids (ILs) and understand the electrochemical performance of supercapacitor electrolytes. This study harmonizes the evaluation of electrochemical performance and transport properties of eight shortlisted ILs from 22 commercially available hydrophobic ILs toward achieving a <mml:math xmlns:mml="https://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mo>≥</mml:mo></mml:mrow></mml:math> 5 V supercapacitor capable of high-temperature operation (up to 353...
2024: Frontiers in Chemistry
https://read.qxmd.com/read/38499898/gel-polymer-electrolyte-based-dual-screen-printed-electrodes-for-the-headspace-quantification-of-4-ethylphenol-and-ethanethiol-simultaneously-in-wines
#16
JOURNAL ARTICLE
Paula Portugal-Gómez, Olga Domínguez-Renedo, M Asunción Alonso-Lomillo
The identification and correction of negative factors, such as 4-ethylphenol and ethanethiol, is important to comply with food safety regulations and avoid economic losses to wineries. A simple amperometric measurement procedure that facilitates the simultaneous quantification of both compounds in the gas phase has been developed using fullerene and cobalt (II) phthalocyanine-modified dual screen-printed electrodes coated with a room temperature ionic liquid-based gel polymer electrolyte. The replacement of the typical aqueous supporting electrolyte by low-volatility ones improves both operational and storage lifetime...
March 19, 2024: Mikrochimica Acta
https://read.qxmd.com/read/38497316/dual-ion-conductors-from-liquid-to-solid
#17
REVIEW
Tao Yu, Wenjie Ning, Haoyu Li, Shaohua Guo, Haoshen Zhou
The traditional working principle within lithium-ion batteries relies on Li+ shuttling between the cathode and anode, namely the rocking-chair mechanism. A single working ion constrains the possibilities for battery design and the selection of electrode materials, while realizing multiple working ions offers the potential to break through the fundamental principles of traditional battery construction. Accordingly, it is necessary to develop dual-ion conductors to enable the migration of multiple working ions...
March 18, 2024: Nanoscale Horizons: the Home for Rapid Reports of Exceptional Significance in Nanoscience and Nanotechnolgy
https://read.qxmd.com/read/38496271/epoxy-based-multifunctional-solid-polymer-electrolytes-for-structural-batteries-and-supercapacitors-a-short-review
#18
REVIEW
Nitai Chandra Adak, Sungmook Lim, Guk-Hwan Lee, Wonoh Lee
The potential applications of epoxy-based solid polymer electrolytes are continually expanding because of their versatile characteristics. These characteristics include mechanical rigidity, nonvolatility, nonflammability, and electrochemical stability. However, it is worth noting that pure epoxy-based solid polymer electrolytes inherently exhibit lower ion transport capabilities when compared to traditional liquid electrolytes. Striking a balance between high mechanical integrity and superior ionic conductivity at room temperature poses a significant challenge...
2024: Frontiers in Chemistry
https://read.qxmd.com/read/38496044/activation-energies-of-heterogeneous-electrocatalysis-a-theoretical-perspective
#19
REVIEW
Zachary Levell, Yuanyue Liu
Heterogeneous electrochemistry is important for various applications. However, currently, there is limited information about activation energies. In this invited review, we review the challenges associated with calculating these activation energies. Specifically, we highlight three key difficulties in atomistic modeling: liquid structure, electrode potential, and electrolyte ions, along with state-of-the-art methods to address them. We aim to inspire more studies in the field of activation energies to better understand and design heterogeneous electrocatalysts...
March 13, 2024: ACS Mater Au
https://read.qxmd.com/read/38494762/unprotected-organic-cations%C3%A2-the-dilemma-of-highly-li-concentrated-ionic-liquid-electrolytes
#20
JOURNAL ARTICLE
Shaoning Zhang, Shengan Wu, Jinkwang Hwang, Kazuhiko Matsumoto, Rika Hagiwara
Highly Li-concentrated electrolytes have been widely studied to harness their uniquely varying bulk and interface properties that arise from their distinctive physicochemical properties and coordination structures. Similar strategies have been applied in the realm of ionic liquid electrolytes to exploit their improved functionalities. Despite these prospects, the impact of organic cation behavior on interfacial processes remains largely underexplored compared to the widely studied anion behavior. The present study demonstrates that the weakened interactions between cations and anions engender "unprotected" organic cations in highly Li-concentrated ionic liquid electrolytes, leading to the decomposition of electrolytes during the initial charge...
March 17, 2024: Journal of the American Chemical Society
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