The infrared radiation heating textiles have attracted increasing attention aiming to address the warmth retention issue in cold weather. It still remains challenging to develop high-efficiency heating products with fast heating rate and stable heat generation. Here, a highly flexible, efficient, and wearable infrared radiation heating carbon fabric (CF) was rationally constructed using textile forming technique. Inspired by the biomimetic adhesion, the carbon fabric was chemically modified by dopamine to improve the interfacial activity on the fiber surface. Infrared radiation materials including tourmaline, ZrO 2 , and medical stone nanoparticles (NPs) were successfully introduced into the carbon fabric through interfacial adhesion. The permanent spontaneous polarization of both CF matrix and infrared radiation NPs can induce an enhanced current in the heater by creating an additional electrical field, benefiting to produce a fast electrothermal response and favorable heat preservation. It was found that 30% tourmaline@PDA@CF, 9% ZrO 2 @PDA@CF, and 15% medical stone@PDA@CF exhibited excellent heat generation performance among different samples with different ingredients. The temperature can be rapidly raised up from room temperature to 58.3 °C, 60 °C, 59.5 °C respectively for these three samples in 10 min under a voltage of 10 V. More importantly, the composite CF is highly shape adaptive and can be fully integrated into a neck guard or industrial carpet for real application. It is expected that this infrared radiation heating CF can be widely applied in the fields of personal warmth, physical therapy, biomedical treatment, and wearable flexible electronics.
Yingxi Lin,Haiyan Zhang,Wentao Deng,Danfeng Zhang,Na Li,Qibai Wu,Chunhua He
For the development of wearable electronic devices, it is crucial to develop energy storage components combining high-capacity and flexibility. Herein, an all-solid-state supercapacitor is prepared through an in-situ “growth and wrapping” method. The electrode contains polyaniline deposited on a carbon woven fabric and wrapped with a graphene-based envelop. The hybrid electrode exhibits excellent mechanical and electrochemical performance. The optimized few layer graphene wrapping layer provides for a conductive network, which effectively enhances the cycling stability as 88.9% of the starting capacitance is maintained after 5000 charge/discharge cycles. Furthermore, the assembled device delivers a high areal capacity (of 790 F cm −2 ) at the current density of 1 A cm −2 , a high areal energy (28.21 uWh cm −2 ) at the power densities of 0.12 mW cm −2 and shows no significant decrease in the performance with a bending angle of 180°. This unique flexible supercapacitor thus exhibits great potential for wearable electronics.
Keyu Ding,Yaqin Yang,Yanan Mao,Dongdong Tong,Shizhou Lu,Bo Song
Solar-driven interfacial evaporation technology has great potential to address both the freshwater and energy crises in a low-cost, environmentally friendly, and sustainable method. How to achieve highly efficient freshwater and energy harvesting simultaneously is still challenging. Here, a Janus-structured multilayer carbon fabric (JMCF) solar evaporator is proposed to effectively overcome the bottleneck in the cogeneration of fresh water and electricity. The Janus structure of the multilayer fabric effectively controls water supply upwards, improves light absorption and photothermal conversion, increases evaporation surface area, facilitates water vapor escape and inhibits VOCs volatilization. Accordingly, the optimized JMCF solar evaporator can achieve a high evaporation rate of 3.12 kg m -2 h −1 and an output voltage of 0.577 V in 3.5 wt% seawater under 1 sun irradiation. In addition, the JMCF evaporation system also demonstrates good working stability, self-cleaning capacity, environmental adaptability, and economic feasibility. This work provides new ideas and inspiration for the design of high efficiency solar-driven interfacial evaporation system to address the freshwater scarcity, energy crisis, global change problem, etc.
危险品化学品经营许可证（带存储）