An Overview of Bacterial Cellulose in Flexible Electrochemical Energy Storage.

: The recent emerging generation of flexible energy storage devices has accelerated the research pace in terms of new materials, new processing techniques and new designs that can meet the demands of mechanical stability upon bending or stretching at an acceptable cost, without compromising their electrochemical performance. Among all the materials currently explored, biomass derived materials have received extensive attention due to their attractive properties such as renewable, low-cost, earth-abundant and multitudinous structures. Herein, in this review, we focus on fundamentals and applications of the special biomass material-bacterial cellulose (BC) in flexible electrochemical energy storage systems. Specifically, we summarized the recent advances of the attractive utilization of BC as stretchable substrates, carbonaceous species and scaffolds for flexible core components construction. Finally, several perspectives related to BC based materials for flexible electrochemical energy storages are proposed based on the current researches and our own evaluation, aiming to provide possible research directions in these fields.