Recent advances achieved in triboelectric nanogenerators (TENG) focus on boosting power generation and conversion efficiency. Nevertheless, obstacles concerning economical and biocompatible utilization of TENGs continue to prevail. Being an abundant natural biopolymer from marine crustacean shells, chitosan enables exciting opportunities for low‐cost, biodegradable TENG applications in related fields. Here, the development of biodegradable and flexible TENGs based on chitosan is presented for the first time. The physical and chemical properties of the chitosan nanocomposites are systematically studied and engineered for optimized triboelectric power generation, transforming the otherwise wasted natural materials into functional energy devices. The feasibility of laser processing of constituent materials is further explored for the first time for engineering the TENG performance. The laser treatment of biopolymer films offers a potentially promising scheme for surface engineering in polymer‐based TENGs. The chitosan‐based TENGs present efficient energy conversion performance and tunable biodegradation rate. Such a new class of TENGs derived from natural biomaterials may pave the way toward the economically viable and ecologically friendly production of flexible TENGs for self‐powered nanosystems in biomedical and environmental applications.

中文翻译：

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工程和激光加工的壳聚糖生物聚合物，用于可持续的和可生物降解的摩擦发电

摩擦电纳米发电机（TENG）的最新进展集中在提高发电和转换效率上。然而，关于经济，生物相容性地使用TENG的障碍仍然普遍存在。壳聚糖是海洋甲壳类动物壳中丰富的天然生物聚合物，为相关领域的低成本，可生物降解的TENG应用提供了令人兴奋的机遇。在此，首次提出了基于壳聚糖的可生物降解和柔性TENGs的开发。系统地研究和设计了壳聚糖纳米复合材料的物理和化学性质，以优化摩擦发电，将原本浪费的天然材料转化为功能性能源装置。首次探索了对TENG性能进行工程设计的激光加工组成材料的可行性。生物聚合物薄膜的激光处理为基于聚合物的TENGs中的表面工程提供了一种潜在的有前途的方案。基于壳聚糖的TENG具有高效的能量转换性能和可调节的生物降解率。这类源自天然生物材料的新型TENGs可能为在生物医学和环境应用中自供电纳米系统的柔性TENGs的经济可行和生态友好生产铺平道路。基于壳聚糖的TENG具有高效的能量转换性能和可调节的生物降解率。这类源自天然生物材料的新型TENGs可能为在生物医学和环境应用中自供电纳米系统的柔性TENGs的经济可行和生态友好生产铺平道路。基于壳聚糖的TENG具有高效的能量转换性能和可调节的生物降解率。这类源自天然生物材料的新型TENGs可能为在生物医学和环境应用中自供电纳米系统的柔性TENGs的经济可行和生态友好生产铺平道路。