Electroless nickel-phosphorus coated expanded graphite paper: Binder-free, ultra-thin, and low-cost electrodes for high-performance supercapacitors

ERDEMİR F., GÜLER O., Canakc A.

JOURNAL OF ENERGY STORAGE, cilt.44, 2021 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 44
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1016/j.est.2021.103364
  • Dergi Adı: JOURNAL OF ENERGY STORAGE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, INSPEC
  • Anahtar Kelimeler: Nickel phosphides, Expanded graphite, Electrode materials, Supercapacitors, High-power, And energy density, ENERGY-STORAGE, CARBON CLOTH, NI-P, ION, COMPOSITES, NANOSHEETS, HYDROXIDE, PHOSPHIDE, ARRAYS
  • Karadeniz Teknik Üniversitesi Adresli: Evet

Özet

In this study, electroless nickel-phosphorus(Ni-P) coating is applied on expanded graphite(EG) papers with excellent electrochemical performances and served as supercapacitor electrodes in alkaline electrolytes. The porosities of Ni-P/EG electrode, measured by mercury intrusion, are compared to expanded graphite papers. It is noticed that the as-prepared ultra-thin, binder-free, eco-friendly, and low-cost Ni-P/EG electrodes can be precisely used as an electrode for supercapacitors and show outstanding performance, including a high specific capacitance of 625 F/g at 1A/g. This material is attained an excellent energy density of 81 Wh/kg at a power density of 1005 W/kg, superior durability with 100,2% retention after 5,000 cycles. The results show that the Ni-P/EG electrode can be used as next-generation advanced metal phosphides for applications in portable electronics, supercapacitors, and wearable energy storage.