Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 6, Issue 41, Pages -Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ta05212c
Keywords
-
Funding
- Shanghai Natural Science Foundation [13ZR1411900]
- Shanghai Alliance Plan [LM201881, LM201751]
- Shanghai Leading Academic Discipline Project [B502]
- Shanghai Key Laboratory Project [08DZ2230500]
Ask authors/readers for more resources
Co(OH)(2) is a candidate cathode material for supercapacitors due to its essential features of high theoretical capacity and long cycle life. Herein, by using phytic acid (PA) as an intermediate connector between Co foam substrates and Ni2+ ions, a Ni-PA nanofilm-covered Co-3(HPO4)(2)(OH)(2) precursor was grown in situ on Co foam in the presence of sodium dodecyl sulfonate (SDS). A 3D nanoarchitecture of ultrathin Co(OH)(2) nanosheet arrays was built through the spontaneous in situ conversion of a Co-3(HPO4)(2)(OH)(2) precursor immersed in an alkaline solution. Even with a high loading of 12 mg cm(-2), the as-prepared SDS-modified Ni-PA/Co(OH)(2)@CoF (SNC@CoF) electrodes exhibited a high specific capacitance (Q(m)) of 429 mA h g(-1) (0.42 A g(-1)) and excellent cyclability with 124.3% retention after 20000 cycles. Furthermore, an asymmetric supercapacitor (ASC) using the modified material can deliver a large energy density of 51.3 W h kg(-1) and an outstanding cycle life (96% retention after 20000 cycles).
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available