Article
Biochemistry & Molecular Biology
Yitong Xie, Shishuai Gao, Junyu Jian, Xiaoyu Shi, Chenhuan Lai, Chunpeng Wang, Feng Xu, Fuxiang Chu, Daihui Zhang
Summary: A skin-mimicking strategy was developed to fabricate cellulose-enhanced hydrogels with high strength, elasticity, conductivity, and anti-freezing ability. Two methods, in situ polymerization and solvent replacement, were compared to incorporate conductive and anti-freezing components into hydrogels. The hydrogels prepared by in situ polymerization showed higher strength (1.0 MPa), while the solvent-replaced hydrogels exhibited higher elastic recovery properties (94.6%) and conductivity (4.5 S/m).
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Materials Science, Multidisciplinary
Bohua Zhao, Qianying Chen, Gaohuan Da, Jinrong Yao, Zhengzhong Shao, Xin Chen
Summary: A highly stretchable, transparent, self-adhesive silk-based hydrogel with anti-freezing and anti-drying properties has been successfully developed, suitable for use in a strain/temperature dual sensor. It exhibits good peeling strength on different substrates and has promising potential for application in soft electronic devices.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Biochemistry & Molecular Biology
Guangyuan Mu, Wenting He, Jia He, Yaseen Muhammad, Zhongfeng Shi, Bo Zhang, Liqin Zhou, Zhenxia Zhao, Zhongxing Zhao
Summary: Ionic conductive hydrogels have gained extensive attention in flexible pressure sensor applications due to their mechanical flexibility and high conductivity. However, maintaining the electrical and mechanical properties of traditional hydrogels at low temperatures remains a challenge. In this study, a novel hydrogel composite was developed by combining a rigid Ca-rich silkworm excrement cellulose with a flexible hydroxypropyl methylcellulose through hydrogen bonding and double ionic bonds. The resulting hydrogel exhibited excellent compression properties, high ionic conductivity, and frost resistance, enabling pressure detection in a wide temperature range with high sensitivity and durability.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Applied
Miao Li, Dong Chen, Xia Sun, Zesheng Xu, Yutong Yang, Yongming Song, Feng Jiang
Summary: A one-pot method for preparing ionic conductive hydrogels with high stretchability, fast response, wide operating temperature range, and long-term stability has been proposed. The resulting hydrogel sensor shows excellent signal sensing capability and cycling stability under extreme conditions, with high sensitivity to compressive deformation and temperature, demonstrating multifunctional sensing performance. This work provides a feasible approach for the long-term use of hydrogels as wearable devices in extreme environments and daily life.
CARBOHYDRATE POLYMERS
(2022)
Article
Materials Science, Multidisciplinary
Shuwang Wu, Ta-Wei Wang, Yingjie Du, Bowen Yao, Sidi Duan, Yichen Yan, Mutian Hua, Yousif Alsaid, Xinyuan Zhu, Ximin He
Summary: The use of potassium acetate in polyvinyl alcohol hydrogels improves mechanical properties, anti-freezing capacity, and conductivity, making them suitable for a wide range of conditions.
NPG ASIA MATERIALS
(2022)
Article
Polymer Science
Yi Gao, Cuilian Wei, Shuangliang Zhao, Wei Gao, Zequan Li, Hong Li, Jianju Luo, Xianyu Song
Summary: This study reports a one-pot method for preparing a double network hydrogel with excellent mechanical properties and high water retention. It also demonstrates the potential application of the hydrogel in flexible sensors.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Chenyan Zhang, Jikui Wang, Shuo Li, Xinquan Zou, Huixian Yin, Yicheng Huang, Feilong Dong, Peiyuan Li, Yaoting Song
Summary: Polyacrylamide/sodium alginate/LiCl hydrogel was constructed to enhance the anti-freezing property without deficiencies of tensile and electrical performance. The semi-interpenetrating network formed through hydrogen bonding performed excellent mechanical property. LiCl contributed to the high ionic conductivity and sensitivity.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Engineering, Environmental
Qiuyu Xu, Mohan Hou, Lifang Wang, Xuepeng Zhang, Lifang Liu
Summary: This study utilizes starch/polyvinyl alcohol (PVA) dual-network hydrogel as a substrate to improve the internal compatibility of hydrogels. The hydrogel exhibits high mechanical properties, anti-freezing, anti-bacterial, and electrical conductivity. The assembled hydrogel sensor effectively detects external stimulations and demonstrates high sensitivity and stability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Applied
Yanyu Yang, Manhua Zhou, Junbo Peng, Xing Wang, Yang Liu, Wanjie Wang, Decheng Wu
Summary: In this study, robust and anti-freezing hydrogel-substrate combinations were successfully constructed by enhancing the adhesion between hydrogels and substrates through a unique linking method. The combinations demonstrated high interfacial toughness even at low temperatures, making them suitable for utilization as multi-model flexible sensors. This work provides a platform for the construction and emerging applications of robust, anti-freezing, and stable-performance hydrogel-based systems.
CARBOHYDRATE POLYMERS
(2022)
Article
Polymer Science
Zeyu Zhang, Patrizio Raffa
Summary: In this study, a zwitterionic conductive hydrogel with excellent mechanical properties and anti-freezing performance was developed and successfully applied in flexible sensors. The addition of LiCl in the polymer matrix enhanced the hydrogel's anti-freezing performance and water retaining properties, while the synergy of chemical and physical crosslinking improved its mechanical performance. Moreover, the integration of PANI resulted in stable conductivity, high sensitivity, and fast response and recovery times for the hydrogel.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Polymer Science
Rujun Dai, Yiyan Gao, Yibo Sun, Kai Shi, Guanghui Gao, Huixuan Zhang
Summary: Conductive hydrogels with excellent flexibility, durability, and functional diversity have great potential in flexible strain sensors. However, most hydrogels lose their properties when frozen and crystallized in low-temperature environments. This study successfully prepared a hydrogel with freezing resistance and water retention by introducing amylopectin, polyvinyl alcohol, lithium chloride, and glycerol. The hydrogel exhibited excellent tensile strain, stress, water retention, and freeze resistance. It also showed biocompatibility and the ability to detect both large and small strains. This research provides a new direction for the development of wearable sensors.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Chemistry, Applied
Meng Zhang, Yaxuan Wang, Kun Liu, Yang Liu, Ting Xu, Haishun Du, Chuanling Si
Summary: Hydrogels with flexibility, versatility, and high sensitivity are important in wearable sensor design. The preparation of high-performance hydrogel-based sensors that can withstand extreme cold conditions is challenging. This study constructs a novel anti-freezing composite hydrogel based on polyacrylamide (PAM), LiCl, and PEDOT:PSS coated cellulose nanofibrils (PAM/PEDOT:PSS/CNF). The addition of CNF improves the mechanical strength and conductivity of the hydrogel, while LiCl enhances freezing tolerance. The composite hydrogel is used to assemble flexible sensors with high sensitivity for detecting human movements and physiological activities.
CARBOHYDRATE POLYMERS
(2023)
Article
Biochemistry & Molecular Biology
Lian Shu, Zhongguo Wang, Xiong-Fei Zhang, Jianfeng Yao
Summary: Ionic conducting hydrogels (ICHs) that exhibit high ionic conductivity and desirable mechanical properties under extreme conditions have been successfully prepared by dissolving cotton linter pulp in a ZnCl2/CaCl2 solution and cross-linking with epichlorohydrin (ECH). The ICHs demonstrate fast response, durable sensitivity, and the ability to work at subzero temperatures, making them ideal for multi-functional sensors in healthcare monitoring and flexible electronics.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Physical
Yajuan Deng, Tianbao Li, Qin Tu, Jinyi Wang
Summary: Flexible and wearable hydrogel sensors have attracted significant interest due to their potential applications in human-machine interfaces, human-activity monitoring, and personal healthcare diagnosis. This study presents a healable, adhesive, and conductive hydrogel sensor that incorporates polydopamine decorated carbon nanotubes (PDA-CNTs) and FeCl3 into an acrylamide-co-acrylic acid polymer matrix. The hydrogel sensor exhibited good stretchability and high sensitivity, as well as fast and repeatable self-healing ability. It also demonstrated stable and accurate monitoring of human motions.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Nanoscience & Nanotechnology
Shengqu Liu, Yuehui Zhong, Xiaoling Zhang, Menghan Pi, Xiaoyu Wang, Ruijie Zhu, Wei Cui, Rong Ran
Summary: In this study, a durable supercapacitor with remarkable capacitance retention under mechanical deformation is developed by utilizing a double-network hydrogel as an electrolyte. The hydrogel electrolyte, prepared by soaking in a high concentration of ZnSO4 solution, exhibits high deformability and adhesion to diverse surfaces. The resulting flexible supercapacitor shows high specific capacitance and excellent capacitance retention under tension, compression, and bending, even after 4000 charge-discharge cycles.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Jianren Huang, Xiaoxiang Yang, Jiaotao Liu, Shiuh-chuan Her, Jinquan Guo, Jianfeng Gu, Lunhui Guan
Article
Mechanics
Jianhong Gao, Xiaoxiang Yang, Jinquan Guo, Jianren Huang
COMPOSITE STRUCTURES
(2020)
Article
Chemistry, Physical
Bing Huang, Yaqi Cui, Rongtao Hu, Jianren Huang, Lunhui Guan
Summary: The electrochemical method of producing H2O2 is a promising approach, with carbon materials as catalysts requiring pore channel engineering to enhance the ORR activity. This study successfully prepared carbon nanospheres with excellent activity through a soft-template method, achieving high production rate of H2O2 in neutral solution.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Engineering, Environmental
Guoqi Chen, Oudong Hu, Jing Lu, Jianfeng Gu, Kai Chen, Jianren Huang, Linxi Hou, Xiancai Jiang
Summary: A dynamic elastic molecular double network (DN) hydrogel electrolyte was designed, exhibiting remarkable stretchability, strong adhesion, and high ionic conductivity, to be used in the fabrication of a highly flexible all-solid-state supercapacitor.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Bing Huang, Hengyue Xu, Nannan Jiang, Minghao Wang, Jianren Huang, Lunhui Guan
Summary: In this study, a Co-HMT metal-organic framework was used as the precursor, and a fast-quenching method was employed to synthesize a catalyst with RuO2 nanorods loaded on ATO. The optimized catalyst exhibited a small overpotential and stable performance, enabling it to reach a certain current density at a low voltage in practical applications.
Article
Engineering, Chemical
Hu Wang, Huang Lin, Xulian Hu, Zhaoxi Zhou, Qihui Chen, Maochun Hong, Heqing Fu
Summary: In this article, sandwich-shaped anisotropically conductive hydrogels were developed with high electrical conductivity, strong moisture retention, and high mechanical properties. The hydrogels exhibited excellent self-healing properties and fatigue resistance, with a self-healing efficiency of up to 90%. The addition of nanographene and a binary solvent consisting of glycerin and water enhanced the mechanical properties and antifreezing function of the hydrogels, respectively. The sandwich-shaped hydrogel strain sensors showed great potential in flexible sensors with their rapid response and high sensitivity.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Danhua Song, Feilong Jiang, Daqiang Yuan, Qihui Chen, Maochun Hong
Summary: A novel metal-organic framework (FJI-H38) with adaptive ultramicropores and multiple active sites has been developed for efficient CO2 separation from air. It has a high adsorption capacity and selectivity for CO2, even in high humidity conditions. The material also exhibits excellent stability, recyclability, and can be synthesized in large quantities, making it a practical adsorbent for trace CO2 capture from the air.
Article
Chemistry, Multidisciplinary
Shaochuan Li, Caiping Liu, Qihui Chen, Feilong Jiang, Daqiang Yuan, Qing-Fu Sun, Maochun Hong
Summary: Coordination hosts based on flexible ligands have been attracting attention due to their adaptive cavities that exhibit induced-fit guest binding and enzymatic catalysis. In this study, a series of homo/heterometallic coordination hosts were synthesized using a flexible ligand and blocking units. The structures formed tube/cage shapes through self-assembly, and structural transformations were achieved through ligand transmetalation. Acid-base resistance testing revealed that one of the tubular complexes showed efficient catalysis for CO2 to CO32- conversion.
Article
Chemistry, Multidisciplinary
Jin Bai, Jianren Huang, Qirui Wu, Lunhui Guan
Summary: Graphene oxide (GO) has excellent mechanical and chemical characteristics, but its expansion and instability in water limit its application. In this study, nitrogen-doped GO (NGO) was successfully obtained and its inter-layer structure and permeability were controlled by adjusting the reduction degree of GO and doping amount of nitrogen. The synthesized NGO membranes showed better permeability than the initial GO membranes without sacrificing the rejection rate.
Article
Chemistry, Physical
Hongjie Chen, Jianren Huang, Jiantao Liu, Jianfeng Gu, Jundong Zhu, Bing Huang, Jin Bai, Jinquan Guo, Xiaoxiang Yang, Lunhui Guan
Summary: This study incorporates reduced graphene oxide and graphene oxide into a hydrogel network to develop an organohydrogel with high toughness and conductivity, showing reliable performance in a wide temperature range. The organohydrogel, designed for multifunctional sensors, exhibits excellent mechanical and electronic properties, suitable for strain/pressure and temperature sensing. This work provides a new paradigm for designing wearable multifunctional sensors or E-skin for detecting human motion or temperature in the future.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Physical
Jianren Huang, Jianfeng Gu, Jiantao Liu, Jinquan Guo, Huiyong Liu, Kun Hou, Xiancai Jiang, Xiaoxiang Yang, Lunhui Guan
Summary: The innovative flexible sensor described in the text has the capability to monitor human motion reliably and self-sustainably, with high energy density and power density. The ionic hydrogel electrolyte used in the device exhibits environmental durability, strain-resistance, and high sensitivity, making it a promising technology for applications in wearable electronics and health monitoring.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Multidisciplinary
Jiayue Tian, Luyao Liu, Kang Zhou, Zixiao Hong, Qihui Chen, Feilong Jiang, Daqiang Yuan, Qingfu Sun, Maochun Hong
Article
Materials Science, Multidisciplinary
Dong Wu, Kang Zhou, Jiayue Tian, Caiping Liu, Feilong Jiang, Daqiang Yuan, Qihui Chen, Maochun Hong
JOURNAL OF MATERIALS CHEMISTRY C
(2020)