MOLECULES
·
2023
·Vol. 28
·期 4
·1554
·
IF 4.6
Feng Pan,Shuang Wang,Zhipeng Yong,Xiaodong Wang,Chenglong Li,Dan Liang,Xiaorui Wang,Han Sun,Yinghe Cui,Zhe Wang
In this study, an ionogel electrolyte (PAIM-X) consisting of 1-vinyl-3-methylimidazole bis (trifluoromethyl sulfonyl) imide ([VMIM][TFSI]), Polyacrylamide (PAAm), and MXene were prepared. The conductivity of PAIM-X and integral area of the voltammetric curve of the supercapacitor (PAIMSC) were improved by adding MXene. The addition of [VMIM][TFSI] enhanced the conductivity and applicable temperature of the ionogel electrolyte. At 90 °C, the conductivity of PAIM-4 can reach 36.4 mS/cm. In addition, spherical polyaniline with good electrochemical properties was synthesized and coated on graphite paper as an active substance. An all-solid-state supercapacitor was composed of PAIM-4, polyaniline electrode with 1.2 V potential window, pseudo-capacitors and high quality capacitors. The solvent 1-ethyl-3-methylimidazolium bis (trifluoromethyl sulfonyl imide) ([EMIM][TFSI]) and methanesulfonic acid (MSA) were introduced into the ionogel to promote the redox reaction of polyaniline (PANI). The mass specific capacitance of PAIMSC was 204.6 F/g and its energy density could reach 40.92 Wh/kg, which shows great potential for practical application at high temperature. The device had good rate performance and cycle performance, and its capacitance retention rate was still 91.56% after 10,000 cycles. In addition, the supercapacitor can work within the temperature range of −20 °C to 90 °C. These excellent electrochemical properties indicate that PAAm/IL/Mxene-X has broad application space and prospect.Keywords:ionogel;Mxene;high temperature;flexible supercapacitors
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-12
·
IF 14.7
He Xiangnan,Zhang Biao,Liu Qingjiang,Chen Hao,Cheng Jianxiang,Jian Bingcong,Yin Hanlin,Li Honggeng,Duan Ke,Zhang Jianwei,Ge Qi
Ionogels are promising material candidates for ionotronics due to their excellent ionic conductivity, stretchability, and thermal stability. However, it is challenging to develop 3D printable ionogels with both excellent electrical and mechanical properties. Here, we report a highly conductive and stretchable nanostructured (CSN) ionogel for 3D printing ionotronic sensors. We propose the photopolymerization-induced microphase separation strategy to prepare the CSN ionogels comprising continuous conducting nanochannels intertwined with cross-linked polymeric framework. The resultant CSN ionogels simultaneously achieves high ionic conductivity (over 3 S m −1 ), high stretchability (over 1500%), low degree of hysteresis (0.4% at 50% strain), wide-temperature-range thermostability (−72 to 250 °C). Moreover, its high compatible with DLP 3D printing enables the fabrication of complex ionogel micro-architectures with high resolution (up to 5 μm), which allows us to manufacture capacitive sensors with superior sensing performances. The proposed CSN ionogel paves an efficient way to manufacture the next-generation capacitive sensors with enhanced performance.
研究领域:
材料科学
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电子工程
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Dong Wu,Mi Wang,Wen Yu,Gui-Gen Wang,Jiaheng Zhang
For thousands of years, wood has been utilized as a natural, abundant, and sustainable material for structural construction and furniture. To enhance its value, we have developed a simple process that can directly convert low-value wood (including cracked wood, chips, shives, and other wood residues) into high-performance all-cellulose ionogels. This process involves delignification, in situ dissolution of cellulose, and self-assembly of molecular cellulose chains. The resulting ionogel exhibits excellent properties such as high ion conductivity (∼60 mS/cm), mechanical strength (∼6 MPa), and self-healing capability (∼10 min). Notably, it also demonstrates exceptional freeze tolerance, withstanding temperatures as low as −50 °C while maintaining high ion conductivity (∼6.4 mS/cm). The ionogel is a versatile substrate for flexible electronic circuits. We have developed a sensor utilizing this ionogel that is breathable, flexible, and highly responsive to temperature, humidity, and strain. Furthermore, we have used it as a gel electrolyte to create supercapacitors with exceptional performance even in low-temperature conditions. The ionic liquid can be reused, with an all-cellulose framework that breaks down naturally in moist soil within 15 days. This sustainable method of producing high-performance ionogels from low-value wood has immense potential in shaping the next generation of soft, intelligent devices.
研究领域:
材料科学
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可持续发展
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生物工程
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 76
·72149-72154
·
IF 3.289
Bin Dai,Degang Deng,Hua Yu,Lei Lei,Yinyan Li,Chenxia Li,Shiqing Xu
Carbon dots, the new member of carbon materials, have attracted much attention for their alluring optical properties showing intense blue and green emission. Herein, carbon dots were synthesized by the hydrothermal method. Eu3+ β-diketonate complexes with characteristic emission were selected as the lanthanide resource. Silica-based ionogels were prepared by a sol–gel route, the ionic liquids in the ionogels were extracted with acetonitrile, and nano-sized pores among the ionogels were obtained. The carbon dots and Eu3+ complexes were homogeneously entrapped in the ionogels without any devitrification by doping the ionic liquid solution in the silica network of the ionogels. The obtained Eu3+-doped ionogel-functionalized carbon dot monoliths are transparent and uniform with promoted mechanical properties and stability. The carbon dots were confined in the nano-sized pores among the ionogels, resulting in there being a certain distance between the carbon dots, as well as preventing them from aggregating, which contributed to a high photoluminescence. The monoliths emit bright white photoluminescence under UV excitation after various studies of the proportion of carbon dots and Eu3+ complexes. Eu3+-doped ionogel-functionalized carbon dot monoliths provide new potential for applications of carbon nanoparticles in optoelectronic devices.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
·
2025
·Vol. 122
·期 15
·e2417978122
·
IF 9.1
Jiayu Wang,Shilong Zhang,Lingling Li,Xiaoliang Wang,Jiaofeng Xiong,Qingning Li,Weizheng Li,Feng Yan
Solvents within gels enhance the mobility of polymer chain segments while concurrently diminishing interchain interactions, thereby facilitating the ductility of glassy polymers at the cost of their mechanical strength. Here, we develop a solvent toughening strategy for the preparation of highly compressible and high-strength ionogels in the glassy state. This approach leverages the synergistic effects of the slow dissociation-shift kinetics of solvent ionic liquids and polymer crystallization. Ionogels exhibit an ultimate compressive stress of 2.3 GPa (at 98% compressive strain), toughness of 1219.3 MJ m−3, and energy dissipation rate of 81.9% (at 70% compression strain). The highly interacting ionic bonds of solvent and the fast crystallization of polymers under load toughen the ionogels and confer impact hardening and efficient energy dissipation behavior under fast impact. A 500-μm-thick ionogel coating can protect fragile items, such as glass, from impact damage. Ionogels, renowned for their impact resistance, hold promise for various applications across industries including human body implants, equipment, transportation, and aerospace.
研究领域:
材料科学
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力学
·
工程学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Wenjing Li,Xuelin Dong,Lihua Zhu,Heqing Tang
It is urgently needed to develop highly efficient and selective adsorbents for enrichment and separation of Re(VII) from Mo(VI) to obtain metallic rhenium. By tuning cross-link of chitosan, ionic gel capsules (CSN) were prepared, which had a core-shell structure and wrapped N263 (methyl trioctyl ammonium chloride) as an extractant. After being characterized, the CSN capsules were used as a green adsorbent for separation of ReO 4 − from MoO 4 2− . It was found that the gel yielded good adsorption capacities for Re(VII) in a wide pH range from pH 2 to 12. The adsorption of Re(VII) on the gel followed the Langmuir model, exhibiting a maximum adsorption capacity of 222 mg g −1 for Re. The adsorbent showed good adsorption capacities for Mo(VI) at pH < 2, but little at pH > 3.5. Therefore, the enrichment and separation of Re(VII) from Mo(VI) could be easily achieved by using the gel adsorbent in a wide pH range from 4 to 12, showing a separation factor β Re/Mo with values of 10 3 –5 × 10 4 . A mechanism was proposed for the selective adsorption of Re(VII). The extractant N263 wrapped in the capsule core provides excellent extractive adsorption ability for Re(VII) through ion association extraction, generating ion association complex R 4 N + ∙ReO 4 − in the adsorbent. The gel shell was composed of cross-linked chitosan induced by sodium tripolyphosphate, and functioned as a blocking layer for the adsorption of Mo(VI), being possibly related to a special interaction between Mo and P as observed in the formation of phosphorus molybdenum heteropolyacid and/or the crosslinking with Mo and chitosan. The CSN gel was successfully applied to separate ReO 4 − from a practical alkaline solution.
研究领域:
环境科学
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材料科学
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生物化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2019
·Vol. 55
·期 9
·3991-4004
·
IF 3.442
Liu Jiahang,Song Hongzan,Wang Zihao,Zhang Jianxin,Zhang Jun,Ba Xinwu
A novel chemical cross-linked ionogels with excellent self-healability, stretchability, and reprocessability based on gelatin have been synthesized via the Schiff base reaction in ionic liquid of 1-ethyl-3-methylimidazolium acetate (EMIMAc). Rheological measurements revealed that the plateaus modulus in storage modulus increases with increase in the content of gelatin. These ionogels displayed good thermal mechanical stability, and the chemical networks were not destroyed even at temperature up to 140 °C. High stretchability was obtained and the elongation at break for the as-prepared ionogel could even reach 368.6%. Importantly, the prepared ionogels showed excellent self-healability and reprocessability. Remarkably, the ionogels exhibited superior ionic conductivity and room temperature ionic conductivity was higher than 1.0 × 10 −3 S/cm. Furthermore, supercapacitors with this ionogel electrolyte showed temperature-dependent specific capacitance and remarkable flexible performance. Therefore, the as-prepared self-healable and reprocessable ionogels from the nature of gelatin, with highly ionic conductivity and stretchability, could be considered an excellent electrolyte candidate for various next-generation stretchable electronics.
研究领域:
材料科学
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能源存储
·
柔性电子
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
·
2022
·
IF 19.069
Sijing Liu,Yuewang Yang,Shusheng Chen,Jiongzhi Zheng,Dong Gyu Lee,Dan Li,Jinglei Yang,Baoling Huang
Flexible ionic thermoelectric materials with large thermopowers show great promise for ultrasensitive thermal detection in wearable devices . Here large and tunable p- and n-type thermopowers are reported in stretchable and self-healing ionogels made of a fluorocarbon elastomer poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP), an ionic liquid 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (EMIMTFSI) and a salt acting as the thermopower regulator. Particularly, a self-healing n-type ionic thermoelectric material is developed for the first time. The thermopower of the resultant ionogels varies from + 30 mV K −1 to − 21 mV K −1 at 90% relative humidity. Meanwhile, the ionogels exhibit excellent stretchability up to 1700% and appropriate Young’s modulus of around 0.26 MPa. Both the mechanical and thermoelectric properties can self-heal spontaneously after damage. Taking advantage of the large p and n-type thermopowers, the stretchable self-healing ionogels are integrated as a flexible thermoelectric detector with 10 pairs of p- and n-type legs on copper electrodes, showing a total thermopower of 0.25 V K −1 operating with a low temperature difference of 1–2 K.
研究领域:
材料科学
·
柔性电子
·
热电技术
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2023
·
IF 13.3
Dengfeng Zhang,Xiujuan Li,Junyue Li,Qiye Wang,Xuemei Dong,Yueyue Wu,Zifan Li,Xinyi Xie,Zhengdong Liu,Fei Xiu,Wei Huang,Juqing Liu
Ionogels are extremely soft ionic materials that can undergo large deformation while maintaining their structural and functional integrity. Ductile ionogels can absorb energy and resist fracture under external load, making them an ideal candidate for wearable electronics, soft robotics, and protective gear. However, developing high-modulus ionogels with extreme toughness remains challenging. Here, a facile one-step photopolymerization approach to construct an acrylic acid (AA)-2-hydroxyethylacrylate (HEA)-choline chloride (ChCl) eutectogel (AHCE) with ultrahigh modulus and toughness is reported. With rich hydrogen bonding crosslinks and phase segregation, this gel has a 99.1 MPa Young's modulus and a 70.6 MJ m −3 toughness along with 511.4% elongation, which can lift 12 000 times its weight. These features provide extreme damage resistance and electrical healing ability, offering it a protective and strain-sensitive coating to innovate anticutting fabric with motion detection for human healthcare. The work provides an effective strategy to construct robust ionogel materials and smart wearable electronics for intelligent life.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Jiale Zhang,Zhuangzhuang Ma,Maojian Li,Minghao Lou,Hongqiang Wang,Lichao Jia
Ionogel has gained attention as a promising material for flexible electronic skin (e-skin), due to its exceptional conductivity, compositional stability, and biocompatibility. Nevertheless, establishing a seamless interface between ionogel and human skin remains a significant challenge. This study presents the design and fabrication of a nanonet-supported ionogel with a thickness of ≈16 µm, marking it the thinnest ionogel reported to date. This ultrathin ionogel exhibits remarkable toughness (5.51 MJ m − 3 ), a broad strain range (0–375%), and impressive fatigue resistance, enduring over 3000 cycles. Additionally, it offers excellent water resistance and a high water vapor transmission rate (WVTR), supporting perspiration and enhancing skin breathability. Moreover, the ultrathin ionogel has potential as a carrier in transdermal drug delivery systems (TDDS), highlighting its suitability for biomedical applications. Wearable devices incorporating this ultrathin ionogel facilitate continuous, sensitive, and highly accurate monitoring of physiological signals, positioning it as a promising material for future flexible e-skin material.
研究领域:
材料科学
·
生物医学工程
·
柔性电子皮肤
✓ 已验证
产品关联
DOI
高影响因子
Royal Society Open Science
·
2018
·Vol. 5
·期 6
·
IF 2.504
Shishun Bai,Xin Wang,Jaana Vapaavuori,Xianru He
This study describes a simple yet efficient approach for the preparation of an ionic gel that is also elastomeric in its solid-state bulk form. A series of poly(2-(diethylamino)ethyl methacrylate-co-lauryl methacrylate) P(DMAEMA-co-LMA) copolymers were synthesized first by radical polymerization. Quaternization of the PDMAEMA component in tetrahydrofuran enables the formation of supramolecular network, giving rise to an ion gel. An elastomer with an elongation at break of over 600% was obtained from the gel. The elastomer, connected by supramolecular ionic cross-links, is solvoplastic in certain solvents. The simple yet efficient approach of the formation of ion-gel and the dried elastomer allows fast preparation of both gel-like and solid-state elastic materials for various applications where recyclability is required.
研究领域:
材料科学
·
高分子化学
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yang Zhou,Lulu Wang,Yinping Liu,Xiaohang Luo,Yiqi He,Yingchun Niu,Quan Xu
Conductive gels are promising soft ionic conductors for stretchable and flexible electronics. However, the integration of multiple functions into one gel remains a great challenge, as the tailoring of these properties is mutually exclusive. In this paper, a simple photopolymerization method is designed to prepare polyacrylic acid/ionic liquid /hydroxypropyl cellulose (PIH) ionogels, which have high transparency (89 %), and superior electrical conductivity (0.379 mS/cm). Owing to the dynamic and reversible nature between the polymer chains, the ionogel possesses good self-healing capability (79.6 %) and self-adhesive properties (242.32–742.76 kPa, typical substrate at room temperature). At the same time, the excellent chemical stability of ionic liquids ensures that PIH ionogels still have good temperature sensitivity (-30 ∼ 110 °C) in extremely harsh environments. Wearable strain sensors based on PIH ionogels can sensitively detect and distinguish body movements, such as limb bending, pronunciation, and pulse. When PIH ionogels are used as a temperature sensor, a cryptographic device with a temperature alarm and an externally stimulated UV switch is designed by using the excellent transparency and temperature response of PIH ionogels. It is believed that the designed ionogel will show great prospects in wearable devices and flexible encryption.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）