Developing a flexible, lightweight, and sustainable electrode with low impedance, electromagnetic stability, long cycle life, and operational safety is essential for meeting the urgent demands for wearable and flexible equipment in contemporary society. Herein, we demonstrate a simple and scalable method to fabricate a high-performance and low-cost nanopaper based on holocellulose nanofiber and multiwalled carbon nanotubes in aqueous by vacuum filtration. Compared with cellulose-based nanopaper, the holocellulose-based nanopaper has distinct advantages such as being easy to fabricate, eco-friendly, and economical. The holocellulose nanofiber of wheat straw was obtained by a mechanical method which retained the natural core–shell structure with an ∼40 nm diameter and ∼3 μm length. Compared with cellulose-based nanopaper, the pure holocellulose nanopaper exhibited high toughness (1.97 × 10⁴ kJ/m³). The fabricated holocellulose-based conductive nanopaper exhibited a desirable electrical performance, including an electric conductivity of 0.72 S cm^–1, a high gravimetric capacitance of 271.99 F g^–1 at a current density of 50 mA g^–1, and cycling stability at a discharge current density of 100 mA g^–1 under room temperature. In addition, the holocellulose-based nanopaper demonstrated good thermal and dimensional stability. The holocellulose-based nanopaper showed these advantageous features of high physical flexibility, good electrochemical properties, and excellent mechanical properties, which are desirable for flexible electrodes, supercapacitors, and sensors.

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基于纤维素的纳米纸对电极材料的快速处理

开发具有低阻抗，电磁稳定性，长循环寿命和操作安全性的柔性，轻便，可持续的电极，对于满足当代社会对可穿戴和柔性设备的迫切需求至关重要。在这里，我们演示了一种简单且可扩展的方法，可通过真空过滤制备基于全纤维素纳米纤维和多壁碳纳米管的高性能，低成本纳米纸。与基于纤维素的纳米纸相比，基于全纤维素的纳米纸具有明显的优点，例如易于制造，生态友好和经济。小麦秸秆的全纤维素纳米纤维是通过机械方法获得的，该方法保留了直径约40 nm，长度约3μm的天然核-壳结构。与纤维素基纳米纸相比，⁴ kJ / m ³）。制成的基于全纤维素的导电纳米纸表现出令人满意的电性能，包括0.72 S cm ^–1的电导率，在50 mA g ^–1的电流密度下的271.99 F g ^–1的高重量电容以及在在室温下的放电电流密度为100 mA g ^–1。另外，基于全纤维素的纳米纸表现出良好的热稳定性和尺寸稳定性。基于全纤维素的纳米纸显示出这些有利的特征，即高的物理柔韧性，良好的电化学性能和优异的机械性能，这是挠性电极，超级电容器和传感器所希望的。