A new carbonaceous material derived from biomass source peels as an improved anode for lithium ion batteries

A simple, efficient, and economical route for large-scale preparation of a new carbonaceous material was explored by using spongy pomelo peels (SPP) without any surfactant addition and other treatment. As an anode material for lithium ion batteries, the product exhibits high capacity and excellent cycling stability and rate capability, delivering a capacity as high as 452 mAh g−1 at the current density of 90 mA g−1 even after 200 cycles. More importantly, the electrode resumes its capacity of about 500 mAh g−1 after the 100th cycle in rate capability test. It is believed that the unique structures and intrinsic properties of the material are responsible for the high electrochemical performance.

► New carbonaceous material was fabricated via directly pyrolyzing spongy pomelo peels. ► The product is composed primarily of disordered carbon and stacked graphene sheets. ► The product exhibits high capacity and excellent cycling stability and rate capability.