title: Lithographically defined porous Ni-carbon nanocomposite supercapacitors.
abstract: Ni was deposited onto lithographically-defined conductive three dimensional carbon networks to form asymmetric pseudo-capacitive electrodes. A real capacity of above 500 mF cm(-2), or specific capacitance of ∼2100 F g(-1) near the theoretical value, has been achieved. After a rapid thermal annealing process, amorphous carbon was partially converted into multilayer graphene depending on the annealing temperature and time duration. These annealed Ni-graphene composite structures exhibit enhanced charge transport kinetics relative to un-annealed Ni-carbon scaffolds indicated by a reduction in peak separation from 0.84 V to 0.29 V at a scan rate of 1000 mV s(-1).
authors: Sandia National Laboratories, Albuquerque, New Mexico 87185, USA. rpolsky@sandia.gov dbburck@sandia.gov.
authors: Xiaoyin
authors: X
authors: Xiao
authors: Thomas
authors: T
authors: Beechem
authors: David R
authors: DR
authors: Wheeler
authors: D Bruce
authors: DB
authors: Burckel
authors: Ronen
authors: R
authors: Polsky