MATERIALS & DESIGN
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2020
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IF 6.289
Jianwei Liang,Xiaoning Zhang,Chi Yan,Yixuan Wang,Michael L. Norton,Xijun Wei,Carrie Donley,Yong Zhu,Peng Xiao,Yunhuai Zhang
As a key building block to power flexible electronics, there is need for the development of flexible current collectors. Bombyx mori silk, a traditional textile, attracts increasing attention for its potential application in flexible electronics and is a promising raw material for flexible carbon electrodes in current collector fabrication. In this work, molybdenum dioxide nanoparticles (MoO 2 NPs), which possess chemical stability and high mass specific capacitance, was used as a feed additive and combined with mulberry leaves to raise silkworms. It was found that the MoO 2 NPs were embedded within the silk fibers, which endowed the resulting silk with favorable features for electrochemical energy storage in flexible electronics. After carbonization, the specific capacitance of electrodes prepared with silk from the MoO 2 NPs feeding group, with a mass/volume ratio of 5 g/L, was enhanced from 100 F/g to 245 F/g at a current density of 0.2 A/g. Impressively, the electrodes show high coulombic efficiency with excellent stability. This work demonstrates the possibility of producing carbonized silk with superior properties for developing silk-based flexible electrodes for use in energy storage devices in a large-scale, green, low-cost way.
研究领域:
材料科学
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储能技术
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纳米技术
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纺织工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
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2020
·Vol. 167
·期 12
·127501
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IF 3.721
Luo Wei,Ji-Hui Li,Chao Chen,Qian Lv,Ruitao Lv,Liqiang Ma,Wanci Shen,Feiyu Kang,Zheng-Hong Huang
The preparation of substrate with high specific surface area and conductivity is very important in the development of non-enzymatic glucose sensors. This study presents a non-enzymatic glucose sensor electrode based on a hybrid reduced graphene oxide (rGO) and carbonized silk fabric (CSF) substrate obtained by immersing silk fabric in a graphene oxide solution and carbonizing at 950 °C in an Ar atmosphere, and then decorating the rGO/CSF surface with Cu nanoflowers by electrodeposition. The optimum Cu-rGO/CSF sensor electrode exhibits high glucose sensitivities of 6613.3 μA mM−1 cm−2 and 1541.7 μA mM−1 cm−2 with linear responses over separate glucose concentration ranges of 0.05–4.0 mM and 4.0–7.0 mM due to the rGO/CSF substrate has high specific surface area, good conductivity and the Cu nanoflowers have high catalytic activity. The electrode also provides a lower limit of detection of 2.27 μM at a signal-to-noise ratio of 3 and high stability in the air. These results demonstrate that the proposed electrode material facilitates the development of simple and accurate non-enzymatic glucose sensors.
研究领域:
材料科学
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生物传感
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电化学
✓ 已验证
产品关联
DOI
高影响因子
Matter
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2021
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IF 15.589
Yang Yang,Huimin Wang,Shuai Zhang,Yen Wei,Xiangming He,Jianlong Wang,Yingying Zhang,Yan Ji
Soft actuators are highly desirable in soft robots, electronic devices, wearable devices, etc. Both multi-stimuli responsiveness and multichannel self-healing ability are essential for soft actuators to be used in different circumstances. However, to date, research on soft actuators with multi-stimuli response or multichannel self-healing ability is scarce, and there is none on actuators with both multi-stimuli abilities. Here, we show that simply hot-pressing carbonized silk fabrics into the surface of vitrimers results in a thermosetting soft actuator that can be efficiently and repeatedly self-healed by five stimuli (light, electricity, electromagnetic wave, solvent, and heat) and can respond to four stimuli (light, electricity, heat, and solvent) simultaneously. Moreover, due to the nature of vitrimer, it is robust, sustainable, recyclable, and reprocessable. This soft actuator may greatly broaden its applications, as it is hopefully healed and actuated by a handy and facile tool when it is used in different environmental circumstances.
研究领域:
材料科学
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软体机器人
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智能材料
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自修复材料
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高分子科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
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IF 13.2
Xue Guo,Yuxin Zhang,Shiqin Liao,Yi Hao,Pengfei Lv,Qufu Wei
Evaporation-driven hydrovoltaic energy harvesting offers a sustainable and promising solution for wearable energy applications. Herein, we report an optimized hydrovoltaic generator based on acid-treated carbonized silk fabrics (ACSF), further functionalized with sodium p-styrene sulfonate (SSS) via in-situ polymerization. The incorporation of oxygen-containing groups (e.g., –COOH and –OH) and sulfonic acid groups (–SO₃H) significantly enhanced the hydrophilicity, surface charge density, and ion transport efficiency of the fabrics. As a result, the optimized PACSF reaches an open-circuit voltage (V oc ) of 288 mV and a short-circuit current (I sc ) of 35 μA under ambient evaporation conditions. V oc and I sc further increases to 0.56 V and 39 μA with artificial sweat. Moreover, an Al C electrode configuration enables a current density of ~560 μA cm −2 together with a power density of ~366 μW cm −3 . The evaporation-driven mechanism was systematically investigated, demonstrating the critical role of surface functionalization in modulating water transport dynamics and charge transfer. PACSF devices exhibited excellent durability, scalability, and tunable electrical output, enabling practical applications in low-power wearable electronics. This work provides insights into the design of hydrovoltaic materials and their potential for integration into wearable energy systems.
研究领域:
能源材料
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纳米技术
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可穿戴电子器件
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水伏学
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表面化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Cleaner Production
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2022
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IF 11.072
Xiuyan Wang,Bingdi Wang,Shengyan Yin,Mingwei Xu,Lixue Yang,Hang Sun
Low solubility and slow diffusion of nitrogen (N 2 ) in water are significant impediments for enhancing the efficiency of fixation nitrogen into ammonia (NH 3 ). Herein, we have prepared bio-inspired hierarchical assembly of carbonized loofah sponge@BiOBr-OV/Au (CL@BiOBr-OV/Au) to improve diffusion of nitrogen by immobilization of hydrophilic BiOBr-OV/Au onto hydrophobic CL sponge. The hydrophobic CL sponge provides an optimized directional channel for N 2 diffuse to the triphase interface N 2 (gas)-H 2 O (liquid)-BiOBr-OV/Au (solid), which supplies generous N 2 for the photocatalytic reaction and replaces the slow diffusion of N 2 through the liquid phase . Continuous delivery of N 2 can effectively capture generated electrons , thereby preventing the recombination of generated electron-hole and promoting N 2 activation. The modification of AuNPs can broaden the photoresponse range of BiOBr-OV, increase oxygen vacancies concentration and enhance N 2 adsorption and activation. CL@BiOBr-OV/Au shows an impressive in nitrogen fixation performance with high selectivity and recyclability of 2.64 mmol·g cat −1 ·h −1 , that is 10.2 and 8.0 times compared to CL@BiOBr-OV and BiOBr-OV/Au, respectively. Our work affords a convenient method for the construction of bio-inspired triphase catalysts with a directional N 2 transport channel to enhance the efficiency of nitrogen fixation, which also holds great promise for the application in other reactions involving gas consumption.
研究领域:
材料科学
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催化
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环境科学
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化学工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）