Jennifer L Wilcox

US Patent:

20150232340, Aug 20, 2015

Filed:

Apr 30, 2015

Appl. No.:

14/701322

Inventors:

- Palo Alto CA, US
John To - Stanford CA, US
Jiajun He - Stanford CA, US
Jennifer Wilcox - Half Moon Bay CA, US
Jianguo Mei - West Lafayette IN, US

International Classification:

C01B 31/04
B01J 20/20

Abstract:

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.