Biodegradable Bacterial Cellulose-Supported Quasi-Solid Electrolyte for Lithium Batteries.
The stringent safety and sustainability requirements for electrolytes used in lithium batteries have led to significant research efforts into alternative materials. Here, a quasi-solid electrolyte based on biodegradable bacterial cellulose (BC) was successfully synthesized via a simple ball milling method. The BC provides plenty of sites for the attachment of ionic liquid electrolytes (ILEs) as well as ion transport channels. Moreover, the O-H groups contained in the BC molecular chains interact with anions in ILEs to form hydrogen bonds, which promotes the dissociation of the lithium salts. The prepared electrolytes (BC-ILEs) have good thermal stability with a decomposition temperature exceeding 300 °C and high ionic conductivities. The Li/BC-ILE/LiFePO4 battery exhibits remarkable electrochemical performance. More importantly, the results of the Fehling test verify that the electrolyte can be degraded by cellulase. The quasi-solid electrolyte broadens the range of electrolytes for lithium batteries and provides new avenues to explore safe and eco-friendly materials.
['Yan|Mingxia|M|', 'Qu|Wenjie|W|', 'Su|Qingdong|Q|', 'Chen|Shi|S|', 'Xing|Yi|Y|', 'Huang|Yongxin|Y|', 'Chen|Nan|N|', 'Li|Yuejiao|Y|', 'Li|Li|L|', 'Wu|Feng|F|', 'Chen|Renjie|R|http://orcid.org/0000-0002-7001-2926']
D002482:Cellulose D004553:Electric Conductivity D011211:Electric Power Supplies D004573:Electrolytes D052578:Ionic Liquids D008094:Lithium
biodegradable quasi-solid electrolyte lithium battery bacterial cellulose hydrogen bond thermal stability