Constructing Phase-Transitional NiSx@Nitrogen-Doped Carbon Cathode Material with High Rate Capability and Cycling Stability for Alkaline Zinc-Based Batteries
| Autor: | Song Yang, Shengnan Wang, Nana Chang, Xianfeng Li, Qinzhi Lai, Yanbin Yin, Huamin Zhang |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
chemistry.chemical_element 02 engineering and technology Zinc Conductivity 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Cathode 0104 chemical sciences law.invention Metal Nickel chemistry Chemical engineering law visual_art Phase (matter) visual_art.visual_art_medium General Materials Science 0210 nano-technology Carbon Current density |
| Zdroj: | ACS Applied Materials & Interfaces. 13:19008-19015 |
| ISSN: | 1944-8252 1944-8244 |
| DOI: | 10.1021/acsami.1c02067 |
| Popis: | Alkaline zinc-based batteries are becoming promising candidates for green and economical energy-storage systems, thanks to their low cost and high energy density. The exploitation of the stable cathode materials with high rate capability and cycling stability is crucial for their further development. Herein, a series of NiSx coated with nitrogen-doped carbon (denoted as NiSx@NC) compounds (x = 0.5-1.0) are synthesized using the facile single-source precursor method. Benefiting from the unique phase-transitional NiSx@NC with high activity and enhanced conductivity from the well-balanced conductive metal nickel and carbon layer, the alkaline zinc-nickel batteries with a phase-transitional NiSx@NC cathode deliver a high capacity of 148 mA h g-1 at a high current density of 100 mA cm-2 and demonstrate a long lifespan of over 500 cycles with a high capacity retention of 98.8%. This work provides a significant guideline for the structural design and optimization of nickel-based materials in alkaline energy-storage devices. |
| Databáze: | OpenAIRE |
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