Cellulose, which accounts for more than half of the carbon content in plants, has become a popular feedstock for biofuel production. In this work, direct electricity generation from dissolved cellulosic biomass in an alkaline fuel cell is explored without energy‐intensive process. The effect of different cellulose dissolution solvents on the electricity production is investigated. Results show dissolution treatment can remarkably affect the fuel cell performance. When NaOH/urea/thiourea is chosen as a solvent, the specific capacity of cellulose is about sixfold higher than that using only NaOH as solvent. The limiting current density and the maximum power density reach 0.85 mA cm−2 and 0.07 mW cm−2, respectively. This power density surpasses those of any existing biotic or abiotic designs. Electrochemical characterizations demonstrate that the remarkable activity improvement towards the cellulose oxidation reaction in NaOH/urea/thiourea aqueous solution is due to the lower charger transfer resistance and higher energy transfer efficiency.

Studies of numerical simulation and experimental validation are carried out on the planar orthogonal braided composites cantilever beam. On the basis of single-cell model, the model of 1 × 1 orthogonal braided fibre structure is established with the SolidWorks engineering drawing software. Six different loading models are analysed using the finite element software ANSYS. The effective elastic constants are obtained with the homogenisation theory. The finite element model of a cantilever beam is then established, which is made of orthogonal braided composites, where the angle between fibre orientation and periphery varies from 0°to 90°. The experiment is carried out and the natural frequencies are obtained using the free vibration measuring method. The effects caused by the additional mass of sensor are eliminated according to vibration theory, and the results are consistent with those obtained by numerical simulation.

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