title: High-performance sodium ion batteries based on a 3D anode from nitrogen-doped graphene foams.
abstract: A 3D N-doped graphene foam with a 6.8 at% nitrogen content is prepared by annealing a freeze-dried graphene oxide foam in ammonia. It is used as an anode in sodium ion batteries to deliver a high initial reversible capacity of 852.6 mA h g(-1) at 1 C between 0.02 and 3 V with a long-term retention of 69.7% after 150 cycles.
authors.affiliation: Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA; Institute for Superconducting and Electronic Materials, University of Wollongong, Wollongong, NSW, 2522, Australia.
authors.forename: Jiantie
authors.initials: J
authors.lastname: Xu
authors.forename: Min
authors.initials: M
authors.lastname: Wang
authors.forename: Nilantha P
authors.initials: NP
authors.lastname: Wickramaratne
authors.forename: Mietek
authors.initials: M
authors.lastname: Jaroniec
authors.forename: Shixue
authors.initials: S
authors.lastname: Dou
authors.forename: Liming
authors.initials: L
authors.lastname: Dai
keywords: 3D graphene; anodes; nitrogen-doping; sodium ion batteries