交织结构二维镍钴层状双氢氧化物曲折纳米片作为电池型超级电容器的性能增强电极材料

IF 4.3 3区 工程技术 Q2 ENERGY & FUELS International Journal of Energy Research Pub Date : 2024-08-21 DOI:10.1155/2024/3149906
Periyasamy Sivakumar, C. Justin Raj, Antonysamy Dennyson Savariraj, Ramu Manikandan, K. Karuppasamy, Akram Alfantazi, Hyun Jung
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引用次数: 0

摘要

采用合理的结构和利用独特的成分是推进高性能超级电容器(SC)的关键,也是释放其全部潜力的关键。在此,我们成功开发了一种简便的溶热合成方法,用于制造高性能超级电容器应用的镍钴层状双氢氧化物(NCLDH)纳米片。通过优化 H2O 与 DMF 的比例,NCLDH 纳米片的形貌和尺寸得到了精确控制。此外,还分析了溶剂比例与 NCLDHs 性能之间的相关性。在 H2O 和 DMF 的比例为 2 :1.生成的纳米片显示出区别于其他 NCLDH 材料的独特特性。合成的 NCLDH-21 纳米结构有许多优点,包括增加了可用于氧化还原反应的活性位点数量,促进了电子和离子的有效收集和传输,减少了聚集,从而有效稳定了循环过程中活性物质的体积变化。经过优化的 NCLDH-21 纳米片在 1 A g-1 时具有 2,054 F g-1 的显著比电容和卓越的速率能力。组装后的混合 SC(HSC)能量密度达到了惊人的 67.67 Whr kg-1,显示出卓越的循环稳定性。因此,NCLDH-21 纳米片卓越的电化学结果证明了其作为下一代储能设备的经济高效电极材料的巨大潜力。
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The Interwoven Structured Two-Dimensional NiCo Layered Double Hydroxide Tortuous Nanosheet as Performance-Enhanced Electrode Material toward Battery-Type Supercapacitor

Implementing a rational structure and leveraging unique components are crucial to advancing high-performance supercapacitors (SCs) and essential to unlocking their full potential. Herein, we successfully developed a facile solvothermal synthetic approach for fabricating NiCo-layered double hydroxide (NCLDH) nanosheets for high-performance supercapacitor applications. NCLDH nanosheets were synthesized with precise control over their morphology and size by optimizing the H2O-to-DMF ratios. Besides, the correlations between the proportion of the solvent and the resulting properties of the NCLDHs were analyzed. The formation of unique vertical orientation nanosheets of interwoven structures was observed in NCLDH-21, where the ratio of H2O and DMF was 2 : 1. The resulting nanosheets display unique characteristics that distinguish them from other NCLDH materials. The synthesized NCLDH-21 nanostructures had many benefits, including increasing the number of active sites that could be used for redox reactions, facilitating the efficient collection and transport of electrons and ions, and reducing aggregation, which effectively stabilized the volume variation of active matter during cycling. The NCLDH-21 nanosheets were optimized to exhibit a remarkable specific capacitance of 2,054 F g−1 at 1 A g−1 and exceptional rate capability. The assembled hybrid SC (HSC) achieved an impressive energy density of 67.67 Whr kg−1, demonstrating remarkable cycling stability. Hence, the remarkable electrochemical outcomes of NCLDH-21 nanosheets demonstrate their immense potential as a cost-effective electrode material for next-generation energy-storage devices.

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来源期刊
International Journal of Energy Research
International Journal of Energy Research 工程技术-核科学技术
CiteScore
9.80
自引率
8.70%
发文量
1170
审稿时长
3.1 months
期刊介绍: The International Journal of Energy Research (IJER) is dedicated to providing a multidisciplinary, unique platform for researchers, scientists, engineers, technology developers, planners, and policy makers to present their research results and findings in a compelling manner on novel energy systems and applications. IJER covers the entire spectrum of energy from production to conversion, conservation, management, systems, technologies, etc. We encourage papers submissions aiming at better efficiency, cost improvements, more effective resource use, improved design and analysis, reduced environmental impact, and hence leading to better sustainability. IJER is concerned with the development and exploitation of both advanced traditional and new energy sources, systems, technologies and applications. Interdisciplinary subjects in the area of novel energy systems and applications are also encouraged. High-quality research papers are solicited in, but are not limited to, the following areas with innovative and novel contents: -Biofuels and alternatives -Carbon capturing and storage technologies -Clean coal technologies -Energy conversion, conservation and management -Energy storage -Energy systems -Hybrid/combined/integrated energy systems for multi-generation -Hydrogen energy and fuel cells -Hydrogen production technologies -Micro- and nano-energy systems and technologies -Nuclear energy -Renewable energies (e.g. geothermal, solar, wind, hydro, tidal, wave, biomass) -Smart energy system
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