Efficient and sustainable energy harvesting with cellulose-based triboelectric nanogenerators: strategies for performance enhancement

Authors：Hongwu Liao, Jongbeom Na, Weiming Zhou, Chong Wang*, Liwei Wang*, Yusuke Yamauchi* and Zhanhui Yuan*

Abstract:The utilization of triboelectrification and electrostatic inductive coupling to convert mechanical energy into electrical energy has generated significant attention, inspiring the development of triboelectric nanogenerators (TENGs) as a promising solution for energy harvesting. Nevertheless, in the pursuit of material innovation, there is still a significant challenge of achieving an optimal balance between high triboelectric output and environmental sustainability. Among the materials being investigated for TENGs, cellulose has become a strong candidate for its natural abundance, biodegradability, and cost-effectiveness, with numerous studies reporting on its modification. As a result, there is a need for a well-defined classification system for these approaches. This paper provides a detailed description of the working processes and modes of TENG, enhancement techniques for cellulose-based TENG are categorized into three groups: chemical modification, physical doping, and surface morphological modification. The difficulties and opportunities that now face in the development of cellulose-based TENGs are also highlighted. Our research offers valuable information to scientists and engineers who want to use cellulose as a triboelectric material to develop effective and long-lasting TENGs, a crucial step in fulfilling the rising need for renewable energy.

Keywords:

Triboelectric nanogenerator (TENG)Renewable energyCellulose-based TENGsEnhanced Performance StrategiesChallenges and prospects

DOI:https://doi.org/10.1016/j.nanoen.2023.108769