Synthesis of Putranjiva seed-derived double activated carbon and its composite with NiO for enhanced performance of supercapacitor

IF 4.3 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Journal of Physics and Chemistry of Solids Pub Date : 2025-05-31 DOI:10.1016/j.jpcs.2025.112894

Rita Kumari , Vinamrita Singh , Chhaya Ravi Kant

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引用次数: 0

Abstract

The work presents a cost-effective, design strategy for developing eco-friendly, advanced electrode materials for sustainable energy storage systems. Putranjiva seed (biomass precursor)-derived carbon was activated two times (doubly activated) in a CO₂-inert atmosphere yielding a porous texture with enhanced surface area, and superior electrochemical properties. A double-activated carbon (DAC)/nickel oxide (NiO) composite, synthesized using a hydrothermal technique, demonstrated exceptional performance attaining a prominent specific capacitance of 641.98 F/g at 1.0 A/g. The enhanced conductivity, structural features, and surface area of 1322.27 m²/g make DAC@NiO an excellent candidate for high-performance supercapacitors. Furthermore, an asymmetric supercapacitor (ASC) employing DAC@NiO composite and DAC as a cathode and anode, respectively, delivered an impressive energy density and power density of 11.42 Wh/kg and 302.70 W/kg, respectively, exceeding several reported carbon-based ASCs. The device shows excellent cyclability with capacitance retention of 86.40 % and a Columbic efficiency of 91.20 % after 5000 charging/discharging cycles. The work endorses DAC@NiO composites as potentially valuable for advancing high-performance, scalable energy storage devices, and flagging future innovations in sustainable manufacturing.

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Putranjiva籽源双活性炭的合成及其与NiO复合增强超级电容器性能

这项工作提出了一种具有成本效益的设计策略，用于开发可持续能源存储系统的环保，先进的电极材料。Putranjiva种子（生物质前体）衍生的碳在二氧化碳惰性气氛中被活化两次（双重活化），产生具有增强表面积和优越电化学性能的多孔结构。采用水热法合成的双活性炭(DAC)/氧化镍（NiO）复合材料在1.0 A/g下具有641.98 F/g的显著比电容。增强的电导率，结构特征和1322.27 m2/g的表面积使DAC@NiO成为高性能超级电容器的优秀候选者。此外，采用DAC@NiO复合材料和DAC分别作为阴极和阳极的非对称超级电容器（ASC）分别提供了令人印象深刻的能量密度和功率密度，分别为11.42 Wh/kg和302.70 W/kg，超过了一些报道的碳基ASC。在5000次充放电循环后，该器件具有良好的循环性能，电容保持率为86.40%，哥伦比亚效率为91.20%。这项研究证实DAC@NiO复合材料在推进高性能、可扩展的储能设备以及未来可持续制造创新方面具有潜在价值。

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来源期刊

Journal of Physics and Chemistry of Solids 工程技术-化学综合

CiteScore

7.80

自引率

2.50%

发文量

605

审稿时长

40 days

期刊介绍： The Journal of Physics and Chemistry of Solids is a well-established international medium for publication of archival research in condensed matter and materials sciences. Areas of interest broadly include experimental and theoretical research on electronic, magnetic, spectroscopic and structural properties as well as the statistical mechanics and thermodynamics of materials. The focus is on gaining physical and chemical insight into the properties and potential applications of condensed matter systems. Within the broad scope of the journal, beyond regular contributions, the editors have identified submissions in the following areas of physics and chemistry of solids to be of special current interest to the journal: Low-dimensional systems Exotic states of quantum electron matter including topological phases Energy conversion and storage Interfaces, nanoparticles and catalysts.