Hierarchical porous carbon derived from rice straw for lithium ion batteries with high-rate performance

Porous carbons with a high surface area have been prepared from rice straw. The hierarchical porous network with large macroporous channels and micropores within the channel walls enable the porous carbons to provide the pathways for easy accessibility of electrolytes and fast transportation of lithium ions. These porous carbons which show a particular large reversible capacity are proved to be promising anode materials for high-rate and high-capacity lithium ion batteries. (c) 2008 Elsevier B.V. All rights reserved.