Hybridized Phosphate with Ultrathin Nanoslices and Single Crystal Microplatelets for High Performance Supercapacitors.

ABSTRACT: A novel hybridized phosphate is developed through a mild hydrothermal method to construct high performance asymmetric supercapacitor. Single layered (Ni,Co)3(PO4)2·8H2O nanoslices (∼1 nm) and single crystal (NH4)(Ni,Co)PO4·0.67H2O microplatelets are obtained through a template sacrificial method and dissolution recrystallization approach respectively in one step. This unique hybridized structure delivers a maximum specific capacitance of 1128 F g(-1) at current density of 0.5 A g(-1). The asymmetric supercapacitor (ASC) based on the hybrid exhibits a high energy density of 35.3 Wh kg(-1) at low power density, and still holds 30.9 Wh kg(-1) at 4400 W kg(-1). Significantly, the ASC manifests very high cycling stability with 95.6% capacitance retention after 5000 cycles. Such excellent electr

SUBMITTER: Zhao Y 

PROVIDER: S-EPMC4735281 | biostudies-literature | 2016 Feb

REPOSITORIES: biostudies-literature