Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 5, Issue 15, Pages 7405-7409Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am4017335
Keywords
NiCo2O4; nanosheet arrays; carbon fabric; flexible; supercapacitor
Funding
- National Natural Science Foundation of China [21103046, 21003041]
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NiCo2O4 with higher specific capacitance is an excellent pseudocapacitive material. However, the bulk NiCo2O4 material prevents the achievement of high energy desity and great rate performance due to the limited electroactive surface area. In this work, NiCo2O4 nanosheet arrays were deposited on flexible carbon fabric (CF) as a high-performance electrode for supercapacitors. The NiCo2O4 arrays were constructed by interconnected ultrathin nanosheets (10 nm) with many interparticle pores. The porous feature of NiCo2O4 nanosheets increases the amount of electroactive sites and facilitates the electrolyte penetration. Hence, the NiCo2O4/CF composites exhibited a high specific capacitance of 2658 F g(-1) (2 A g(-1))(,) good rate performance, and superior cycling life, suggesting the NiCo2O4/CF is a promising electrode material for flexible electrochemical capacitors.
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