COLLOIDS AND SURFACES B-BIOINTERFACES
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2021
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IF 5.268
Jinling Liu,Jie Ai,Jiawen Chen,Ying Guo,Jianrong Lin,Qinhui Chen
The anisotropic Janus gel shows more diverse characteristic and responsiveness due to its asymmetric chemical structure. Herein, the water/oil PDA-PAA/PBMA-PEHMA Janus gel was prepared by one-step polymerization of incompatible monomers. In this Janus gel, PDA-PAA layer possesses good adhesion effect and self-healing property attributing to the chemical bonds and the hydrogen bonds among DA, AA, or each other, and the π-π stacking of DA. The IPN structure of the water phase and the oil phase makes Janus gel have good mechanical properties. The above chemical and physical effects dissipate a large amount of energy when PDA-PAA/PBMA-PEHMA Janus gel is subjected to external forces, so it has excellent fatigue resistance. The hydrophilic PDA-PAA side and the lipophilic PBMA-PEHMA side show different swelling responses in the oil-water medium. The internal stress difference caused by this different swelling makes the Janus gel show curl toward different directions in different media. Then, conductivity media of NaCl added in PDA-PAA layer endows Janus gel with anisotropic conductivity. It is possible to judge the hydrophilic and hydrophobic properties of solution by monitoring the current change of conductive Janus gel. Conductive Janus gel can also be used to monitor human body motion and micro motion. This conductive/insulating Janus gel is suitable for flexible sensor used in harsh environment.
研究领域:
材料科学
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生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Xiaohong Sun,Jinhui Zhang,Xueyan Li,Qinglu Peng,Xuliang Yang,Qingju Liu,Longzhou Zhang
The inherent trade-off between mechanical robustness and ionic transport efficiency in gel electrolytes has posed a long-standing challenge for advancing solid-state zinc-air batteries. Conventional approaches struggle to reconcile micron-scale pores (essential for mechanical reinforcement) with macroporous networks (critical for rapid ion migration). In this study, a novel strategy was employed to introduce micropores onto the skeleton of a macroporous gel. The X-ray tomography reveals this secondary structure for the first time. The zinc-air battery assembled by this gel exhibit the high ion conductivity of 205 mS cm −1 and undertake a stress of 984 Kpa. Additionally, the lifetimes of button cell and flexible Zinc-air battery reach 120 h and 97 h respectively.
研究领域:
材料科学
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能源工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Yuzhen Qian,Zeyi Wang,Lin Wang,Xinyu Sun,Xiaoyong Qiu,Jingcheng Hao
A persistent challenge for electrolytes is achieving simultaneous compatibility with both electrodes under high-voltage conditions, which has restricted the power output of energy storage devices. Herein, we developed an integrated Janus gel electrolyte with a bilayer heterostructure to extend the potential limits on both the cathode and anode. This electrolyte consisted of a deep eutectic solvent (DES) gel phase and an ionic liquid (IL) gel phase. The DES gel layer functioned as the anolyte, benefiting from its reduction tolerance through internal H-bond interactions, while the IL gel phase served as the catholyte, taking advantage of the high oxidation resistance of TFSI - . Moreover, the miscibility between DES and IL enabled full integration of the intermediate layer, effectively reducing interfacial transmission impedance and promoting ions migration. The fabricated Janus gel demonstrated a wide electrochemical window (4.70 V), satisfactory ionic conductivity (3.57 mS/cm), and excellent temperature tolerance. A supercapacitor incorporating this Janus gel electrolyte delivered an energy density of 89.4 Wh/kg at the power density of 646.2 W/kg under the voltage window of 3.6 V (−1.8∼1.8 V), along with robust cycling stability over 10,000 charge–discharge cycles. An energy density of 31.4 Wh/kg at a power density of 386.5 W/kg could be maintained in the voltage range of 0∼1.8 V. This research provides novel insights into the design of engineered electrolytes that are high compatible with both the cathode and anode in high-voltage applications.
研究领域:
材料科学
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能源存储技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Polymer Materials
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2025
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IF 4.7
Hua Chen,Pengda Fang,Mingchen Yang,Jiangtao Yu,Xinyu Ma,Yin Hu,Feng Yan
Rechargeable electrochromic Zn-ion batteries (RZEBs) which combine electrochromic properties with energy storage capabilities, represent a promising development in the field of transparent batteries. The aqueous electrolytes are crucial for enhancing the kinetics and capacity of the cathode in RZEBs. However, the Zn anode suffers from hydrogen evolution reaction (HER), dendrite growth, and formation of byproducts due to excess water. Herein, we designed an integrated Janus gel electrolyte by incorporating a propylene carbonate-based organogel with a hydrogel electrolyte. The Janus gel electrolyte not only facilitates efficient Zn insertion in the cathode with short self-coloring time and good cyclic stability but also effectively mitigates water-induced corrosion in the Zn anode. Specifically, the Zn//Cu batteries exhibit a high Coulombic efficiency of 97.91%. Furthermore, the Zn//WO3 batteries exhibit a specific capacity of 43.64 mA h g–1 with a capacity retention of 60.84% after 160 cycles. This work provides an effective electrolyte design that significantly enhances the cycle stability of RZEBs.
研究领域:
材料科学
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能源存储与转换
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Ying Yuan,Zhiqiang Tang,Zhihao Yang,Xiluan Wang
Functional hydrogel sensors have shown explosive growth in the health and medical fields. However, the uniform adhesion and the complicated polymerization process of hydrogels seriously hinder their further development. Herein, inspired by the layered structure of human skin, we prepare a Janus gel using in-situ polymerization. Based on the lignin-Fe 3+ dual catalytic system, the rapid polymerization of the gel was achieved at room temperature. By tailoring the mass ratio of lignin and Fe 3+ in the precursor, the adhesion of the upper and bottom layers can be easily adjusted. In addition, hydrophobic association is introduced into the upper layer to improve the gel's mechanical properties. The obtained asymmetric bilayer gel has a significant difference in adhesion (7 times), and exhibits excellent mechanical properties in the elongation at break (1437 %) and the breaking strength (463.2 kPa). Moreover, the bilayer gel also has good freezing and UV resistance. We use the bilayer gel as a wearable strain sensor, which shows a wide strain detection range of 0–800 % (maximum gauge factor = 5.3). The proposed simple strategy avoids UV irradiation and heating processes, which provides a new idea for the rapid polymerization of multifunctional Janus hydrogels with adjustable performances.
研究领域:
材料科学
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化学工程
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生物医学工程
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传感器与执行器
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）