Electrospinning with Natural Rubber and Ni Doping for Carbon Dioxide Adsorption and Supercapacitor Applications

Songwuit Chanthee1

Channarong Asavatesanupap2

Darunee Sertphon3

Thanigan Nakkhong4

Nakarin Subjalearndee5

Malee Santikunaporn1,Email

1Department of Chemical Engineering, Faculty of Engineering, Thammasat Engineering School, Thammasat University, Pathum Thani, 12120, Thailand.
2Department of Mechanical Engineering, Faculty of Engineering, Thammasat Engineering School, Thammasat University, Pathum Thani, 12120, Thailand.
3Department of Chemistry, Faculty of Science, Rangsit University, Pathum Thani, 12000, Thailand.
4Division of Materials and Textile Technology, Faculty of Science and Technology, Thammasat University, Pathumthani 12120, Thailand.
5National Nanotechnology Center, National Science and Technology Development Agency, 111 Innovation Cluster 2 (INC2 Building) Thailand Science Park, Pathum Thani, Thailand 12120.

Abstract

Three distinctive morphologies of carbon nanofibers (CNFs) on the surface were successfully fabricated by the electrospinning technique. The polymeric precursor was prepared by dissolving polyacrylonitrile (PAN), natural rubber (NR) cup lump, and nickel-pyridine complex in a single solution. The PAN-based polymeric solution, doped with various amounts of Ni, NR, and NR-Ni, was electrospun to create polymeric fibers and then stabilized and carbonized to obtain PAN composite nanofibers. Smooth surfaces were found on all NR-doped and Ni (5 wt%)-doped CNFs. Pores and spots on the CNFs’ surface occurred on Ni-doped CNFs at 10 and 15 wt%, respectively. Interestingly, carbon nanotube (CNT) growth on the CNF surface was found in NR-10Ni@CNF samples. Depending on the preparation technique, NiO nanoparticles also formed in CNFs, with a small size (25 nm) promoting CNT formation and a large size (200-400 nm) creating pores on the CNF surface. CNT growth on the carbon fiber surface was successfully achieved using trace amounts of NR with Ni samples. Based on the results of CO2 adsorption and electrochemical performance, the 1NR-10Ni@CNF electrode exhibited a specific capacitance that was twice as high as the PAN electrode. Additionally, the 5Ni@CNF demonstrated CO2 adsorption that was 4.0 times greater at 273 K and 2.9 times greater at 298 K.

Electrospinning with Natural Rubber and Ni Doping for Carbon Dioxide Adsorption and Supercapacitor Applications