6 results on '"Jiang, Shaohua"'
Search Results
2. Hierarchically core-shell structured nanocellulose/carbon nanotube hybrid aerogels for patternable, self-healing and flexible supercapacitors.
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Cheng, Xiaoyu, Wang, Huixiang, Wang, Shaowei, Jiao, Yue, Sang, Chenyu, Jiang, Shaohua, He, Shuijian, Mei, Changtong, Xu, Xinwu, Xiao, Huining, and Han, Jingquan
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CARBON nanotubes , *ENERGY density , *ENERGY storage , *SUPERCAPACITORS , *BORAX , *CELLULOSE fibers , *HYDROGELS , *SELF-healing materials , *POLYMER networks - Abstract
[Display omitted] The flexible and self-healing supercapacitors (SCs) are considered to be promising smart energy storage devices. Nevertheless, the SCs integrated with flexibility, lightweight, pattern editability, self-healing capabilities and desirable electrochemical properties remain a challenge. Herein, an all-in-one self-healing SC fabricated with the free-standing hybrid film (TCMP) composed of the 2,2,6,6-tetramethylpiperidin-1-yloxy-oxidized cellulose nanofibers (TOCNs) carried carbon nanotubes (CNTs), manganese dioxide (MnO 2) and polyaniline (PANI) as the electrode, polyvinyl alcohol/sulfuric acid (PVA/H 2 SO 4) gel as the electrolyte and dynamically cross-linked cellulose nanofibers/PVA/sodium tetraborate decahydrate (CNF/PB) hydrogel as the self-healing electrode matrix is developed. The TCMP film electrodes are fabricated through a facile in-situ polymerization of MnO 2 and PANI in TOCNs-dispersed CNTs composite networks, exhibiting lightweight, high electrical conductivity, flexibility, pattern editability and excellent electrochemical properties. Benefited from the hierarchically porous structure and high mechanical properties of TOCNs, excellent electrical conductivity of CNTs and the desirable synergistic effect of pseudocapacitance induced by MnO 2 and PANI, the assembled SC with an interdigital structure demonstrated a high areal capacitance of 1108 mF cm−2 at 2 mA cm−2, large areal energy density of 153.7 μWh cm−2 at 1101.7 μW cm−2. A satisfactory bending cycle performance (capacitance retention up to 95 % after 200 bending deformations) and self-healing characteristics (∼90 % capacitance retention after 10 cut/repair cycles) are demonstrated for the TCMP-based symmetric SC, delivering a feasible strategy for electrochemical energy storage devices with excellent performance, designable patterns and desirable safe lifespan. [ABSTRACT FROM AUTHOR]
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- 2024
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3. Nanocellulose-mediated bilayer hydrogel actuators with thermo-responsive, shape memory and self-sensing performances.
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Ma, Yuanyuan, Lu, Ya, Yue, Yiying, He, Shuijian, Jiang, Shaohua, Mei, Changtong, Xu, Xinwu, Wu, Qinglin, Xiao, Huining, and Han, Jingquan
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HYDROGELS , *SHAPE memory polymers , *ACTUATORS , *VALVES , *INTERFACIAL bonding , *SOFT robotics , *POLYACRYLAMIDE - Abstract
Inspired by creatures, abundant stimulus-responsive hydrogel actuators with diverse functionalities have been manufactured for applications in soft robotics. However, constructing a shape memory and self-sensing bilayer hydrogel actuator with high mechanical strength and strong interfacial bonding still remains a challenge. Herein, a novel bilayer hydrogel with a stimulus-responsive TEMPO-oxidized cellulose nanofibers/poly(N-isopropylacrylamide) (TOCN/PNIPAM) layer and a non-responsive TOCN/polyacrylamide (TOCN/PAM) layer is proposed as a thermosensitive actuator. TOCNs as a nano-reinforced phase provide a high mechanical strength and endow the hydrogel actuator with a strong interfacial bonding. Due to the incorporation of TOCNs, the TOCN/PNIPAM hydrogel exhibits a high compressive strength (~89.2 kPa), elongation at break (~170.7 %) and tensile strength (~24.0 kPa). The prepared PNIPAM/TOCN/PAM hydrogel actuator performs the roles of an encapsulation, jack, temperature-controlled fluid valve and temperature-control manipulator. The incorporation of Fe3+ further endows the bilayer hydrogel actuator with a synergistic performance of shape memory and temperature-driven, which can be used as a temperature-responsive switch to detect ambient temperature. The PNIPAM/TOCN/PAM-Fe3+ conductive hydrogel can be assembled into a flexible sensor and generate sensing signals when driven by temperature changes to achieve real-time feedback. This research may lead to new insights into the design and manufacturing of intelligent flexible soft robots. [Display omitted] [ABSTRACT FROM AUTHOR]
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- 2024
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4. Nanocellulose-based nanogenerators for sensor applications: A review.
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Lv, Qiqi, Ma, Xiaofan, Zhang, Chunmei, Han, Jingquan, He, Shuijian, Liu, Kunming, and Jiang, Shaohua
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NANOGENERATORS , *CLEAN energy , *SENSOR networks , *RAW materials , *DETECTORS , *HUMAN activity recognition - Abstract
With the rapid development of the Internet of Things, nanogenerator as a green energy collection technology has attracted great attention in various fields. Specifically, the natural renewable nanocellulose as a raw material can significantly improve the environmental friendliness of the nanocellulose-based nanogenerators, which also makes the nanocellulose based nanogenerators expected to further develop in areas such as wearable devices and sensor networks. This paper mainly reports the application of nanocellulose in nanogenerator, focusing on the sensor. The types, sources and preparation methods of nanocellulose are briefly introduced. At the same time, the special structure of nanocellulose highlights the advantages of nanocellulose in nanogenerators. Then, the application of nanocellulose-based nanogenerators in sensors is introduced. Finally, the future development prospects and shortcomings of this nanogenerator are discussed. [ABSTRACT FROM AUTHOR]
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- 2024
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5. Preparation of nanocellulose and its applications in wound dressing: A review.
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Yang, Chen, Zhu, Yaqin, Tian, Zhiwei, Zhang, Chunmei, Han, Xiaoshuai, Jiang, Shaohua, Liu, Kunming, and Duan, Gaigai
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CELLULOSE , *NANOSTRUCTURED materials , *SUSTAINABILITY , *WOUND healing , *WOUNDS & injuries , *THERMAL stability - Abstract
Nanocellulose, as a nanoscale polymer material, has garnered significant attention worldwide due to its numerous advantages including excellent biocompatibility, thermal stability, non-toxicity, large specific surface area, and good hydrophilicity. Various methods can be employed for the preparation of nanocellulose. Traditional approaches such as mechanical, chemical, and biological methods possess their own distinct characteristics and limitations. However, with the growing deterioration of our living environment, several green and environmentally friendly preparation techniques have emerged. These novel approaches adopt eco-friendly technologies or employ green reagents to achieve environmental sustainability. Simultaneously, there is a current research focus on optimizing traditional nanocellulose preparation methods while addressing their inherent drawbacks. The combination of mechanical and chemical methods compensates for the limitations associated with using either method alone. Nanocellulose is widely used in wound dressings owing to its exceptional properties, which can accelerate the wound healing process and reduce patient discomfort. In this paper, the principle, advantages and disadvantages of each preparation method of nanocellulose and the research findings in recent years are introduced Moreover, this review provides an overview of the utilization of nanocellulose in wound dressing applications. Finally, the prospective trends in its development alongside corresponding preparation techniques are discussed. [ABSTRACT FROM AUTHOR]
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- 2024
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6. Flexible environment-tolerant electroluminescent devices based on nanocellulose-mediated transparent electrodes.
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Sun, Haoyu, Lu, Ya, Chen, Yuanyuan, Yue, Yiying, Jiang, Shaohua, Xu, Xinwu, Mei, Changtong, Xiao, Huining, and Han, Jingquan
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ELECTROLUMINESCENT devices , *FATIGUE limit , *ELECTRODES , *NANOWIRES , *DIELECTRIC devices , *FLEXIBLE electronics , *CELLULOSE , *POLYDIMETHYLSILOXANE - Abstract
Stretchable electroluminescent (EL) devices show great potential for wearable displays. However, the integration of stretchability, flexibility, temperature-tolerance, waterproofness and biocompatibility into a single EL device remains a challenge. Herein, we report a facile full solution-process method for a novel EL device consisting of a dielectric luminescent layer sandwiched between two silver nanowires-cellulose nanocrystals with II crystalline allomorphs/polydopamine-polydimethylsiloxane (CNC II-AgNWs/PDA-PDMS) electrodes. CNC II is used as a green dispersant, film-forming agent and antioxidant to improve the optical, electrical, mechanical and antioxidant properties of the electrodes. The electrodes exhibit a smooth surface, low sheet resistance (~11 Ω sq−1), high transparency (~79.2 %), ideal stretchability (~100 % strain) and excellent inoxidizability. The assembled EL devices with outstanding tensile stability and fatigue resistance demonstrate excellent luminance, flexibility and stretchability underwater and at extreme temperatures, as well as intrinsic biocompatibility. Our multifunctional EL devices with outstanding integrated properties provide new insights for the next-generation flexible electronics. [Display omitted] [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
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