Insights into Nano- and Micro-Structured Scaffolds for Advanced Electrochemical Energy Storage

Qiu, Jiajia; Duan, Yu; Li, Shaoyuan; Zhao, Huaping; Ma, Wenhui; Shi, Weidong; Lei, Yong

doi:10.1007/s40820-024-01341-4

Cited by 6 publications

(1 citation statement)

References 196 publications

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“…However, the fast frequency response of these macropore-dominated electrodes is maintained by sacrificing the energy density, resulting in a low specific areal capacitance ( C A ) at 120 Hz, hindering the development of miniaturized line-filtering capacitors [ 34 – 36 ]. Moreover, it is challenging to control the arrangement density of upright nanoarrays using existing methods [ 22 , 37 – 39 ]. Therefore, developing a proper way to manage the arrangement of high-orientation nanoarrays to enhance C A is of great significance.…”

Section: Introductionmentioning

confidence: 99%

High Density 3D Carbon Tube Nanoarray Electrode Boosting the Capacitance of Filter Capacitor

Chen,

Han,

et al. 2024

Nano-Micro Lett.

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Electric double-layer capacitors (EDLCs) with fast frequency response are regarded as small-scale alternatives to the commercial bulky aluminum electrolytic capacitors. Creating carbon-based nanoarray electrodes with precise alignment and smooth ion channels is crucial for enhancing EDLCs’ performance. However, controlling the density of macropore-dominated nanoarray electrodes poses challenges in boosting the capacitance of line-filtering EDLCs. Herein, a simple technique to finely adjust the vertical-pore diameter and inter-spacing in three-dimensional nanoporous anodic aluminum oxide (3D-AAO) template is achieved, and 3D compactly arranged carbon tube (3D-CACT) nanoarrays are created as electrodes for symmetrical EDLCs using nanoporous 3D-AAO template-assisted chemical vapor deposition of carbon. The 3D-CACT electrodes demonstrate a high surface area of 253.0 m2 g−1, a D/G band intensity ratio of 0.94, and a C/O atomic ratio of 8. As a result, the high-density 3D-CT nanoarray-based sandwich-type EDLCs demonstrate a record high specific areal capacitance of 3.23 mF cm−2 at 120 Hz and exceptional fast frequency response due to the vertically aligned and highly ordered nanoarray of closely packed CT units. The 3D-CT nanoarray electrode-based EDLCs could serve as line filters in integrated circuits, aiding power system miniaturization.

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Section: Introductionmentioning

confidence: 99%

High Density 3D Carbon Tube Nanoarray Electrode Boosting the Capacitance of Filter Capacitor

Chen,

Han,

et al. 2024

Nano-Micro Lett.

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Sweat Gland‐Like Fabric for Personal Thermal‐Wet Comfort Management

Zhang,

Wang,

Chen

et al. 2024

Adv Funct Materials

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The sweat evaporation strategy has shown great potential for passive cooling of the human body. However, the accumulation of sweat at the skin resulting from the hindrance by traditional fabrics increases the heat load and causes the clothing to stick to the skin. Sweat evaporation cooling textiles that perform the sweat‐wicking function of sweat glands are thus highly desirable. Here, a sweat gland‐like (Sg‐like) fabric is proposed for personal thermal‐wet comfort management. The Sg‐like channels formed in the fabric through spraying and ultrasonic welding processes can pull liquid water from the skin and spread it out over the outer layer of the fabric for rapid evaporation. The Sg‐like design principle is also well‐validated based on colored fabrics. In artificial sweating skin demonstrations, the temperature of skin covered with the Sg‐like fabric is comparable to that of bare skin and lower than that of skin covered with commercial textiles. In human body tests, a temperature reduction of ≈2 °C is observed in sweating for skin coated with the Sg‐like fabric compare with skin‐coated cotton. It is expected this work offers promising guidelines for developing a sweat‐evaporation cooling textile to meet the thermal‐wet comfort requirements of the human body.

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Amorphization‐Driven RhRu Bimetallene Enhances Water Dissociation Kinetics

Wu,

Liu,

Fan

et al. 2024

Adv Funct Materials

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Phase engineering holds great promise in enhancing the functionalities of nanomaterials by enabling precise control over their phase and morphology. However, achieving this level of control in synthesis remains a significant challenge. In this study, the synthesis of a highly amorphous RhRu (a‐RhRu) bimetallene using a one‐pot wet‐chemical approach is presented. The introduction of a highly amorphous structure allows for the optimization of electron configurations overall structure of a‐RhRu. This catalyst demonstrates exceptional activity in the alkaline hydrogen evolution reaction, with a low overpotential of 32 mV at 10 mA cm−2 and a high turnover frequency (TOF) of 3.06 H2 s−1 at an overpotential of 50 mV, surpassing the performance of most reported Rh‐based electrocatalysts. The findings underscore the potential of phase engineering strategies in electrocatalysis.

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Insights into Nano- and Micro-Structured Scaffolds for Advanced Electrochemical Energy Storage

Cited by 6 publications

References 196 publications

High Density 3D Carbon Tube Nanoarray Electrode Boosting the Capacitance of Filter Capacitor

High Density 3D Carbon Tube Nanoarray Electrode Boosting the Capacitance of Filter Capacitor

Sweat Gland‐Like Fabric for Personal Thermal‐Wet Comfort Management

Amorphization‐Driven RhRu Bimetallene Enhances Water Dissociation Kinetics

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