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Direct fabrication of phosphorus-doped nickel sulfide and eco-friendly biomass-derived humic acid as efficient electrodes for energy storage applications

Hekmat, F ; Sharif University of Technology | 2021

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  1. Type of Document: Article
  2. DOI: 10.1039/d1se00905b
  3. Publisher: Royal Society of Chemistry , 2021
  4. Abstract:
  5. Development of renewable energies is in parallel with improving high-performance energy storage devices, which can store maximum solar or wind energy and power. Herein, asymmetric energy storage systems are constructed from phosphorus-doped nickel sulfide (P-doped NiS) and biomass-derived humic acid (HA) as positive and negative electrodes, respectively. Initially, nickel sulfide (NiS) nanostructures are directly grown onto nickel foam (NF) via a hydrothermal step. P-doping into the NiS bulk is carried out through a simple hydrothermal process as well. Also, HA is activated via carbonization treatment (A-HA) for employing as the negative electrode's active material. The P-doped NiS-NF delivers a considerable specific capacity of 486.7 mA h g-1 at 6 A g-1 and the A-HA-NF exhibits a specific capacitance of 163.3 F g-1 at 0.1 A g-1. The assembled asymmetric supercapacitor (ASC) benefits from a wide operating potential window (1.6 V), remarkable energy density (36.32 W h kg-1), and reasonable power density (199.95 W kg-1). The promising electrochemical behavior endows the ASCs with significant applications in electrochemical energy storage systems. This journal is © The Royal Society of Chemistry
  6. Keywords:
  7. Biological materials ; Carbonization ; Electrodes ; Energy storage ; Storage (materials) ; Sulfur compounds ; Wind power ; Direct fabrications ; Eco-friendly ; Energy storage applications ; Humic acid ; Negative electrode ; Nickel foam ; Nickel sulphide ; Phosphorus-doped ; Renewable energies ; Storage systems ; Organic acids ; Biomass ; Detection method ; Electrode ; Inorganic compound ; Phosphorite ; Phosphorus
  8. Source: Sustainable Energy and Fuels ; Volume 5, Issue 19 , 2021 , Pages 4869-4881 ; 23984902 (ISSN)
  9. URL: https://pubs.rsc.org/en/content/articlelanding/2021/se/d1se00905b