Pyrolyzed carbon materials give fascinating solutions for many problems in the current research world. The locally available organic wastes can be pyrolyzed and tuned for their properties for various applications. Coconut-based materials such as shell and fiber have shown promising results in different technological applications. However, a detailed study of the structural and property evolution of these materials has not been carried out yet. In this work, the evolution of conductivity and piezoresistivity of coconut fiber-derived carbon is studied. Coconut fiber is pyrolyzed at different temperatures 600 °C, (CCP600) 800 °C (CCP800) and 1000 °C (CCP1000) to produce carbon fiber. Electrical conductivity experiments show differences between CCP600, CCP800 and CCP1000, with CCP600 displaying much lower conductivity at approximately (0.7 S/m) compared to CCP800 (1 × 103 S/m) and CCP1000 (1.4 × 103 S/m). Conversely, CCP600 demonstrates impressive piezoresistive characteristics, exhibiting significant resistance changes even under minimal strain. The gauge factor for the coconut fiber-derived carbon was found to be 4.1 for CCP600, 1.0 for CCP800, and 0.3 for CCP1000. Further, the powdered carbon samples show an increase in the gauge factor to a range of 36.8, which makes CCP600 well-suited for sensor applications requiring precise sensing capabilities. The present study suggests that CCP600, with its low cost and ease of fabrication, is a promising material for low-budget sensor applications.

中文翻译：

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热解椰子纤维中的压阻性


热解碳材料为当前研究领域的许多问题提供了迷人的解决方案。当地可用的有机废物可以热解并调整其特性，以用于各种应用。椰子基材料，如壳和纤维，在不同的技术应用中显示出有希望的结果。然而，尚未对这些材料的结构和性能演变进行详细研究。在这项工作中，研究了椰子纤维衍生碳的电导率和压阻率的演变。椰子纤维在 600 °C、（CCP600）、800 °C （CCP800） 和 1000 °C （CCP1000） 的不同温度下热解，生产碳纤维。电导率实验显示 CCP600、CCP800 和 CCP1000 之间存在差异，CCP600 在大约 （0.7 S/m） 时表现出的电导率比 CCP800（1 × 103 S/m）和 CCP1000（1.4 × 103 S/m）低得多。相反，CCP600 表现出令人印象深刻的压阻特性，即使在最小的应变下也表现出显着的电阻变化。发现椰子纤维衍生碳的标距因子为 CCP4.1 为 600，CCP1.0 为 800，CCP1000为 0.3。此外，碳粉样品的应变系数增加到 36.8 的范围，这使得 CCP600 非常适合需要精确传感能力的传感器应用。目前的研究表明，CCP600 具有低成本和易于制造的特点，是一种很有前途的材料，适用于低预算传感器应用。