The positive effect of nitridation on CrNb49O124 nanowires for high-performance lithium-ion storage
| Autor: | Haoxiang Yu, Shi Chen, Maoting Xia, Wuquan Ye, Miao Shui, Wenchao Bi, Chengxiang Xiao, Jie Shu, Xikun Zhang |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Process Chemistry and Technology Nanowire chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Energy storage Electrospinning Surfaces Coatings and Films Electronic Optical and Magnetic Materials Anode chemistry Chemical engineering 0103 physical sciences Materials Chemistry Ceramics and Composites Lithium 0210 nano-technology Faraday efficiency Nitriding |
| Zdroj: | Ceramics International. 46:15527-15533 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2020.03.099 |
| Popis: | Advanced electrode materials with excellent electrochemical properties have always been widely concerned in lithium-ion batteries (LIBs). In this work, two kinds of CrNb49O124 nanowires of different sizes are prepared via electrospinning technique with two different solvents (ethanol and dimethylformamide). Moreover, the obtained CrNb49O124 nanowires are nitrided by thermal ammonia gas to further improve the electrochemical performance. And it is pleasantly surprised to say that the nitrided CrNb49O124 nanowires perform better than our expectation. It exhibits an initial Coulombic efficiency up to 90.72%, and an eximious charge specific capacity (273.6 mAh g−1), which is apparently higher than that before nitridation. In addition, after 300 cycles at 1 C, it still maintains capacity of 224.4 mAh g−1 and the retention is up to 90.41%, indicating its excellent long cycling stability. The outstanding electrochemical properties of nitrided CrNb49O124 nanowires are proved to be much superior than most of anode materials in LIBs. Meanwhile, it is successfully confirmed that nitridation technique can be an efficient approach for high-performance energy storage applications to promote electrochemical properties of most electrode materials. |
| Databáze: | OpenAIRE |
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