title: An ultrahigh volumetric capacitance of squeezable three-dimensional bicontinuous nanoporous graphene.
abstract: Graphene with a large specific surface area and high conductivity has a large specific capacitance. However, its volumetric capacitance is usually very low because the restacking of 2D graphene sheets leads to the loss of the large ion-accessible surface area. Here we report squeezable bicontinuous nanoporous nitrogen-doped graphene, which is extremely flexible and can tolerate large volume contraction by mechanical compression without the face-to-face restacking occurring. The compressed nanoporous N-doped graphene with a large ion accessible surface area and high conductivity shows an ultrahigh volumetric capacitance of ∼300 F cm-3together with excellent cycling stability and high rate performance.
authors: WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan. mwchen@wpi-aimr.tohoku.ac.jp and School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China.
authors: H-J
authors: HJ
authors: Qiu
authors: WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan. mwchen@wpi-aimr.tohoku.ac.jp.
authors: L Y
authors: LY
authors: Chen
authors: WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan. mwchen@wpi-aimr.tohoku.ac.jp.
authors: Y
authors: Y
authors: Ito
authors: WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan. mwchen@wpi-aimr.tohoku.ac.jp.
authors: J L
authors: JL
authors: Kang
authors: WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan. mwchen@wpi-aimr.tohoku.ac.jp.
authors: X W
authors: XW
authors: Guo
authors: WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan. mwchen@wpi-aimr.tohoku.ac.jp.
authors: P
authors: P
authors: Liu
authors: WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan. mwchen@wpi-aimr.tohoku.ac.jp.
authors: H
authors: H
authors: Kashani
authors: WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan. mwchen@wpi-aimr.tohoku.ac.jp.
authors: A
authors: A
authors: Hirata
authors: WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan. mwchen@wpi-aimr.tohoku.ac.jp.
authors: T
authors: T
authors: Fujita
authors: WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan. mwchen@wpi-aimr.tohoku.ac.jp and State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200030, China and CREST, Japan Science and Technology Agency, Saitama 332-0012, Japan.
authors: M W
authors: MW
authors: Chen