Research progress of wood and lignocellulose in sustainable piezoelectric systems

Wood is the most abundant natural resource in the world. Wood and its derived materials have the characteristics of low cost, renewable, degradable, non-toxic and excellent biocompatibility. Due to the monoclinic (Iβ) and triclinic (Iα) structures constructed by hydrogen bond network in the crystal structure of natural cellulose, it has piezoelectric properties. Recently, the piezoelectric properties of cellulose materials have also been systematically explored with the development of many new lignocellulosic materials and their various functions. However, there is no comprehensive review on the application of lignocellulosic materials in the field of piezoelectric energy harvesting device. This paper reviews the current literature on wood, lignocellulose materials and their nanocomposites in the field of piezoelectric collection from mechanical energy. At the same time, the challenges in this application and production of various lignocellulose materials are also pointed out. The future development prospect of lignocellulosic materials was prospected. This review will provide a reference for the in-depth research of wooden piezoelectric composites.