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| Papermaking Process Micro/Nano-power Harvesting and Self-powered Sensor |
| Received:December 10, 2022 |
| DOI：10.11980/j.issn.0254-508X.2023.05.001 |
| Key Words:pulp liquid energy triboelectric nanogenerator self-powered sensors |
| Fund Project:国家自然科学基金项目（22278091）。 |
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| Abstract:In this study， a triboelectric nanogenerator was utilized to harvest mechanical energy generated from pulp fluids. The contact electrification of different concentrations of nanocellulose suspensions with solids was investigated. The mechanism of conversion of micro/nano-power to electrical energy was elucidated. The liquid concentration was found to be negatively correlated with the output performance， and a two-electrode liquid-solid triboelectric nanogenerator was designed accordingly， where the specific difference in voltage output could be used as a feedback signal for the concentration. The results showed that the self-powered sensor had excellent sensitivity （the linear fitting degree of surfactants， lignin， calcium carbonate and their mixtures to the sensitivity of the sensor remained above 0.96）， outstanding stability， and millisecond response time （the pulping signal could be sensed within 40 ms， and the linear fit was 0.99）. This study aims to provide a sustainable energy solution for the era of smart paper-making in the context of carbon peaking and carbon neutrality goals. |
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