From biomass-derived wastes (bagasse, wheat straw and shavings) to activated carbon with three-dimensional connected architecture and porous structure for Li-ion batteries

Abstract

Abstract We report a strategy for the preparation of three dimensional porous carbon materials by activation of different biomass wastes. The three-dimensional porous carbon material has a multi-layer pore structure of large pores, mesopores and small pores. They are arranged in a bridging manner and the multi-layer pore structure can also achieve good conductivity of ions and electrons and large specific surface areas. After 100 cycles, the G-800 sample has a capacity of up to 325\u202fmAh\u202fg−1 at a current density of 0.1\u202fA\u202fg−1. It also exhibits excellent cycle stability. The experimental results show that three-dimensional porous carbon materials prepared by using biomass waste not only solve the problem of disposal of biomass waste, but also obtain methods and ways to produce valuable functional carbon materials on a large scale from waste.