Carbon Derived from Pine Needles as a Na+-Storage Electrode Material in Dual-Ion Batteries.

ABSTRACT: Pine needles are used as the precursor material to prepare hard carbon. Scanning electron microscopy, X-ray diffraction, and N2 adsorption-desorption tests are carried out to characterize the surface, crystal, and pore structure of the material. The pine needle derived carbon (PNC) exhibits excellent Na-ion storage ability. A dual-ion battery of PNC/graphite using a Na+-based organic electrolyte is constructed. The batteries display outstanding electrochemical performance: a superior energy density (200 Wh kg-1 at 131 W kg-1), high cut-off voltage (4.7 V), and outstanding cycling stability (87.2% retention after 1000 cycles). In addition, the separate responses of the cathode and anode are investigated.

SUBMITTER: Wang X 

PROVIDER: S-EPMC6607337 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature