Microporous/Mesoporous Carbon

摘要

Hierarchically porous graphitic (HPG) carbon is provided via improved methods. The first approach is based on forming a 3-D polymer network from a first precursor and a second precursor and carbonizing it. The carbon in the resulting carbon structure comes from the first precursor, while the second precursor volatizes to form the pores. However, the second precursor is temperature resistant, such that carbonization of the first precursor is underway when the second precursor volatizes. The second approach is based on forming a structured polymer from first and second precursors. More specifically, the second precursor forms a second polymer having a micelle structure and the first precursor forms a first polymer that coats the micelle structure of the second polymer. The structured polymer is carbonized. Here also the carbon in the resulting carbon structure comes from the first precursor, while the second precursor volatizes to form the pores.

主权项

1. A method of forming porous carbon, the method comprising:
providing a first precursor that includes one or more aromatic monomers; providing a second precursor; forming a 3-D polymer network from the first precursor and the second precursor, wherein the second precursor provides cross linking of one or more polymers derived from the first precursor; drying the 3-D polymer network to provide a dried structure; and carbonizing the dried structure to provide a porous carbon structure, wherein carbon of the porous carbon structure is provided at least in part by carbonization of the first precursor, wherein pores of the porous carbon structure are provided at least in part by volatilization of the second precursor, and wherein volatilization of the second precursor occurs at least in part when the dried structure is partially carbonized.