ACS Applied Energy Materials
·
2024
·
IF 5.4
Haitao Zhang,Xinglin Jiang,Shanshan Wu,Xiang Chu,Tao Xiang
Environmentally friendly and self-healable supercapacitors (EFSH-supercapacitors) hold promise to support high safety and extend the lifetime when undergoing mechanical loads and, therefore, share great application in flexible wearable electronics. Here, we develop this kind of a supercapacitor through using a polyampholyte (PA) hydrogel that possesses the capability of salt permeation and self-healing. The ionic conductivity of the PA hydrogel is largely enhanced (up to 13.2 mS cm–1) by both bonding and adsorbing NaCl salt. The balanced electrical and mechanical performance of NaCl infiltrated PA hydrogel facilitates strong electrode–electrolyte interfacial linkage and low charge transfer resistance, which enables the EFSH-supercapacitor to have state-of-the-art electrochemical properties. We show that supercapacitor after structural failure as PA hydrogel electrolyte is cut into two pieces, for which stored energy was previously completely damped, can now be rapidly (8 min) and repeatedly repaired (∼54% after four times self-healing). We also prove that the damage of the whole supercapacitor including both electrodes and electrolyte can also be successfully repaired. The electrolyte-dried supercapacitor recovers to efficient work by adding synthetic sweat, demonstrating its practical application in wearable electronics.
研究领域:
材料科学
·
能源技术
·
柔性电子学
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产品关联
DOI
高影响因子
Polymer Chemistry
·
2020
·Vol. 12
·期 5
·670-679
·
IF 5.342
Zijian Shao,Shanshan Wu,Qian Zhang,Hui Xie,Tao Xiang,Shaobing Zhou
Stimuli-responsive materials with shape deformation properties play an important role in many fields such as artificial muscles, soft robots, and tissue engineering. Among them, stimuli-responsive hydrogels as actuators possessing shape deformation properties have been focused on. In this paper, a polyampholyte-based hydrogel with gradient pore construction is synthesized by a facile one-step random copolymerization, in which two sides of the reaction mold possess different hydrophilicity and hydrophobicity. The micro-Fourier transform infrared spectra prove the gradient distribution of chemical composition. Owing to the gradient pore construction and the ionic bonds, the polyampholyte-based hydrogel can rapidly change the shape when exposed to the environmental-friendly stimulus of water and recover to the original shape in salt solution, and the maximum bending angle reaches about 180°. Besides, this hydrogel actuator has a shorter recovery time compared with response time and the response/recovery time ratio is 2. By adjusting chemical and non-chemical factors including physical cross-link content, aspect ratio, salt solution concentration and soaking time, shape deformation degree and response/recovery time are controllable. Gradient pore construction and locomotion make this hydrogel actuator become a potential material for multiple applications.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry B
·
2021
·Vol. 9
·期 8
·2010-2015
·
IF 6.331
Xinyao Li,Lingshu Kong,Guanghui Gao
Hydrogel-based flexible sensors have been extensively investigated, but inevitably, some hydrogels will not work properly at low temperature or recover their original property after deformation. In this work, a polyampholyte hydrogel was successfully prepared by introducing zwitterionic monomers with hydrophobic association. The electrostatic interaction based on polyelectrolyte provides excellent stretchability, fatigue resistance and self-recovery. It was important that the hydrogel, as an excellent strain sensor, exhibited a high electrical conductivity of 0.041 S cm−1, a low temperature resistance of −31.7 °C, and a high sensitivity in the strain range of 0–500%. The hydrogel sensor is used for human motion detection, including joint movement, vocalization, and walking. Predictably, the hydrogel will provide stable performance in a complex temperature environment and exhibited a wide range of applications in physiological signal monitoring, electronic skin and soft robots.
研究领域:
材料科学
·
生物医学工程
·
传感器技术
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产品关联
DOI
PubMed
高影响因子
Gels
·
2025
·Vol. 11
·期 3
·203
·
IF 5.3
Ye Sun,Dominic John,Yuxin Yan,Xueliang Feng,Qingrong Wei,Chunxin Ma,Zhenzhong Liu,Haimei Mao,Tuck-Whye Wong,Yun Chen
Polyzwitterion (PZW) hydrogel has excellent marine anti-biofouling performance, but it is difficult to effectively work for a long time in natural seawater due to its weak mechanical strength. In this study, a new natural rubber (NR)-PZW composite hydrogel has been reported for long-term anti-biofouling by simply dispersing NR latex into the poly(sulfobetaine methacrylate) (PSBMA) hydrogel network. First of all, owing to the PZW hydrogel network having an anti-polyelectrolyte effect, this NR-PZW hydrogel can provide outstanding anti-biofouling performance, including broad-spectrum anti-bacteria, anti-algae, and anti-protein properties in marine environments. Furthermore, it has a composited natural rubber nanoparticle with a hydrophilic negatively charged outer protein membrane, which can uniformly disperse in the hydrogel to significantly improve its mechanical properties. Therefore, this composited hydrogel can provide not only highly enhanced tensile strength (0.52 MPa) but also ultra-high breaking elongation (738%), which can effectually resist harsh seawater environments. As a result, the NR-PZW composite hydrogel can achieve excellent anti-biofouling performance for more than 3 months within a real marine environment. This work can provide an excellent, robust polyzwitterionic hydrogel for long-term marine anti-biofouling, which will also inspire new strategies for anti-biofouling materials.
研究领域:
材料科学
·
生物学
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产品关联
DOI
PubMed
高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Xuanxuan Du,Zhiheng Xie,Hanchao Zhang,Shoukun Jiang,Xing Su,Jintu Fan
Atmospheric water harvesting (AWH) presents great potential in addressing the increasing global challenges in freshwater and energy supply, especially in arid and semi-arid regions. The recent AWH materials focus primarily on maximizing water uptake, while conventional approaches prioritize hygroscopicity at the expense of mechanical integrity, which severely limits their applicability in real-world scenarios. In this study, a novel tunable hygroscopic mix-charged polyzwitterionic hydrogel (THMPH) is reported that achieves dual excellence in outstanding moisture absorbency and mechanical robustness. Owing to the broad ionic crosslink's degree enabling the rigid skeletal framework and energy-dissipative sacrificial networks, THMPH exhibits more than 200 times higher mechanical ductility (225 kPa tensile strength retention at 200% mass swelling ratio) in comparison with the commonly-used AWH zwitterionic polybetaine. The optimized topological structure coupled with improved lithium chloride binding affinity results in excellent water uptake (2.9 g g −1 at 25 °C, 70% RH). When THMPH is used for daytime photovoltaic panel cooling, it can provide a 15 °C temperature reduction of a PV panel under 1 kW m −2 solar irradiation, resulting in a 7.33% increase in solar energy conversion efficiency. This hydrogel design paradigm, synergizing superior hygroscopicity with exceptional mechanical robustness, demonstrates significant potential for advancing practical applications.
研究领域:
材料科学
·
环境科学
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产品关联
DOI
PubMed
高影响因子
ACS Applied Polymer Materials
·
2023
·
IF 5
Huihui Zheng,Hongwei Zhou,Zhao Wang,Shuman Zhang,Hongli Zhang
Hydrogels are promising materials for flexible wearable sensors, but they often suffer from unpredictable mechanical damage. In this work, self-healing polyampholyte hydrogels are developed and explored in constructing wearable mechanosensors including resistive strain sensors and capacitive pressure sensors. In order to prepare the polyampholyte hydrogels, sodium p-styrenesulfonate (NaSS) and (methacryloxyethyl)trimethylammonium chloride (DMC) are used as the anionic and cationic monomers, respectively, and N,N′-methylenebis(acrylamide) (MBAA) is used as the chemical cross-linking agent. The resulting hydrogels, denoted as NaSS/DMC polyampholyte hydrogels, exhibit outstanding self-healing ability, transparency, ionic conductivity, and stretchability. Resistive strain sensors assembled from such polyampholyte hydrogels exhibit a gauge factor (GF) of 2.9 over a strain range of 0–350%, a low response time of 250 ms, and excellent cycling stability. Moreover, sandwich-structured capacitive pressure sensors are assembled utilizing polyampholyte hydrogels containing reliefs as the electrodes. The pressure sensors achieve a GF of 2.17 kPa–1, a sensing range of 0–7.35 kPa, and high cycling stability. The applications of such wearable mechanosensors in monitoring various strains and pressures in daily life are demonstrated. Overall, this work not only develops a smart hydrogel with outstanding self-healing ability but also provides a clue to construct soft electronics for wearable devices.
研究领域:
材料科学
·
生物医学工程
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Ya-Lan Zhao,Yin Li,Rong Chen,Liangliang Zhu,Guo-Xing Li,Hai-Xia Shen,Qing Li,Su Chen
The scarcity of freshwater has become a growing threat for human life, which sparks intense interests in hydrogel evaporator towards seawater desalination. Thus, methods allowing the rapid synthesis of high-performance hydrogel evaporator is highly desirable. In this work, we develop polyzwitterionic hydrogel by using zwitterionic monomer (2-Methacryloyloxy)ethyl]dimethyl-(3-sulfopropy, DMAPS) via frontal polymerization (FP) method, which is time- and energy-saving, allowing the preparation of hydrogels within several minutes. Meanwhile, the polyzwitterionic hydrogel shows higher swelling ratios and water evaporation performance than that prepared by common strategy. The polyzwitterionic hydrogel has anti-polyelectrolyte effects, showing electrostatic interaction between the anionic/cationic groups and salt ions, which is beneficial to the swelling capacity and evaporation performance in high salinity brines. Specially, by regulating the DMAPS content, a maximum seawater evaporation rate of 3.62 kg·m −2 h −1 under simulated sunlight and a maximum seawater evaporation rate of 3.57 kg·m −2 h −1 under natural sunlight are achieved, which holds great potentials in seawater desalination. This work proposes a polyzwitterionic hydrogel with high evaporation rate in seawater via a facile FP strategy, which enables the preparation of a variety of high-performance hydrogel evaporators in a rapid fashion.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2019
·Vol. 9
·期 4
·2081-2091
·
IF 3.049
Jiajia Shen,Miao Du,Ziliang Wu,Yihu Song,Qiang Zheng
Biological fouling, where marine microorganisms attach densely to various submerged surfaces, has been a serious economic problem worldwide. Different from most antifouling approaches based on stiff and solid materials or coatings, a soft and wet coating composed of zwitterionic polymer was prepared in this paper. With the combination of the anti-polyelectrolyte effect of poly-N-(3-sulfopropyl)-N-(methacryloxyethyl)-N,N-dimethylammonium betaine (PSBMA) and the typical polyelectrolyte effect of polyacrylic acid (PAA), a bicomponent hydrogel coating with weak swelling in saline solution was achieved, which could avoid peeling from solid substrates. The bicomponent hydrogel coating showed strong tensile properties and good compression performance and slipperiness. Although the large Young's modulus of the coating relatively weakens the drag reduction effect, entering the mixed lubrication region in low sliding rate is easy and a low friction coefficient at a high rate could thus be obtained. With the aid of silane coupling agent and weak deformation in water and saline solution, the hydrogel coating could be bound tightly on solid surfaces. After strong sandy water abrasion, the bicomponent hydrogel coating could maintain its original state without any cracks and peeling. The hydrogel coating exhibits good anti-bacterial adhesion and anti-protein adsorption. The bicomponent zwitterionic hydrogel coating reported here provides a new strategy for marine antifouling and drag reduction studies.
研究领域:
材料科学
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海洋生物学
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表面化学
·
高分子科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yutong Tian,Jinwei Zhou,Huiquan Gu,Baojiang Jiang
Fresh water scarcity and the sustainable utilization of nuclear energy are two pressing and intertwined global challenges. Herein, a novel multi-functional hydrogel-based platform (PSHDU) is proposed to address the issues through simultaneous photothermal interfacial solar seawater evaporation (ISSE) and seawater uranium extraction (SUE). The PSHDU operates efficiently through the synergistic interaction of three core components: the photothermal conversion unit, uranium adsorption unit, and substrate material. The photothermal conversion unit employs mesoporous polydopamine nanospheres (mPDA), while the uranium adsorption function is achieved by amine-ratio-regulated UiO-66-NH 2 (U6N). The solvent-induced phase-separated polyzwitterionic hydrogel (PSH X ) integrates a solvent-tunable porous architecture with its unique anti-polyelectrolyte effect, demonstrating rapid swelling and efficient water transport capabilities in high-salinity environments, which formed a more stable and highly hydrated evaporation platform. This design not only enhances the system salt resistance and hydration properties but also achieves efficient water transport by optimizing the pore structure. Benefiting from the synergistic promotion of mPDA and U6N, PSHDU not only shows an efficient natural seawater evaporation rate up to 4.55 kg m −2 h −1 but also exhibits a uranium extraction capacity of 289.33 mg g −1 under simulated solar sunlight (1 kW m −2 ), simultaneously, which is 37.05% higher than that of PHSD (without the addition of U6N) and 36.48% higher than that of itself without light. Meanwhile, PSHDU maintains outstanding antifouling property, salt resistance and 96% of its evaporation performance after a 72 h cyclic stability test. Therefore, as a multi-functional evaporation platform, PSHDU can simultaneously alleviate the existing shortages of freshwater and uranium and provide ideas and possibilities for integrating more novel functions into ISSE materials.
研究领域:
材料科学
·
环境科学
·
能源技术
·
化学工程
·
核科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Qing Zhao,Dengyu Li,Liyan Zhao,Siyu Zhang,Shengnan Wang,Xuejiao Zhang
Enhancing water convection to dilute surface brine has proven effective in suppressing salt precipitation during interfacial solar evaporation (ISE), but excessive water transport often leads to heat loss. Herein, we develop a zwitterionic poly(sulfobetaine methacrylate) (PSBMA) hydrogel-based ISE system that self-regulates water transport across a wide salinity range. The hydrogel exhibits a tunable swelling ratio and reduced water evaporation enthalpy due to a strong anti-polyelectrolyte effect, enabling efficient water evaporation with minimal thermal loss. Numerical simulations show that the salt-binding capacity of the hydrogel induces a reversed salt concentration gradient, which enhances both water pumping and backward salt diffusion. This mechanism prevents salt accumulation and ensures consistent evaporation. As a result, the system achieves a stable water evaporation rate exceeding 2.0 kg m −2 h −1 across salinities from 0 to 20 wt%, maintaining long-term performance without salt crystallization or structural degradation. This work demonstrates a promising strategy for designing self-adaptive evaporators with both high energy efficiency and excellent salt resistance across varying saline conditions.
研究领域:
可再生能源
·
材料科学
·
环境工程
·
化学工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Xiaobin Li,Jun Shi,Chenguang Kong,Cunzhi Li,Hangzhou Wang,Shumin Jiang,Yang Li
Currently, diverse hydrogels with multiple functionalities have attracted considerable attention. However, due to poor adaptability in real-life application scenarios for example in drying air and underwater, the hydrogels developed to date have not yet realized most of their promising applications, particularly in flexible electronics. Herein, inspired by the process of preparing the outermost layer of sugar coating on Tanghulu, a traditional Chinese winter snack, we report a dipping-ultraviolet (UV) encapsulation method for affording hydrogels with excellent water retention and anti-swelling capacity. A photoinitiator-grafted polymer chain (PGPC) with UV curing capability is prepared by 4-benzoylphenyl acrylate (ABP) and hydrophobic monomers radical polymerization , which is uncrosslinked during synthesis. After dipping and UV irradiation, the PGPC on the polyacrylamide (PAAm) hydrogel surface is cross-linked by benzophenone (BP) chemistry to form a coating network. Furthermore, the PGPC-coated hydrogel PAAm demonstrates great anti-drying properties with a weight fraction of up to 0.85 ± 0.02 after 21 h at 50 °C and anti-swelling capacity with a weight fraction of down to 1.01 ± 0.01 after 120 h in deionized water . Benefiting from the BP chemistry, the versatility of this method is demonstrated using various hydrogels such as polyvinyl alcohol (PVA) and polyzwitterionic hydrogel. As a proof-of-concept, the coated-hydrogel-based sensor shows strong signals anti-interference ability in ambient air and underwater. This work provides a promising route for encapsulating different hydrogels endowing weak hydrogels with strong environmental adaptability.
研究领域:
材料科学
·
化学工程
·
聚合物化学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 43
·24325-24335
·
IF 12.732
Longwei Li,Lanshuang Zhang,Wenbin Guo,Caiyun Chang,Jing Wang,Zifeng Cong,Xiong Pu
The rechargeable aqueous Zn battery is promising for next-generation wearable energy storage devices, due to its outstanding safety and low cost. Herein, we report a high-performance dual-ion Zn battery with both cations and anions hosted in the polyaniline (PANI) cathode. Of special interest is that a polyzwitterionic hydrogel electrolyte is specifically designed to regulate both the anion and cation transport, which originates from the strong electrostatic interaction between polyzwitterions with counter free ions. The ion-conducting and mechanical properties are then optimized by adjusting the polyzwitterionic content in the hydrogel networks. The intrinsic regulated anion/cation transport channels result in stable and uniform plating/stripping behaviors of the Zn metal anode, and meanwhile promote the cation/anion hosting reaction in the PANI cathode. These synergistic effects provide the Zn/PANI battery with excellent electrochemical performances, achieving a capacity of 102.5 mA h g−1 and a high retention rate of 87.5% after 600 cycles at 5 A g−1. Furthermore, a solid-state pouch cell is prepared for wearable devices with demonstrated excellent electrochemical performances, high flexibility and safety.
研究领域:
能量存储
·
材料科学
·
电化学
✓ 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）