Green carbon nanospheres for integrated photo-supercapacitors device with improved efficiency

IF 4.3 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS Diamond and Related Materials Pub Date : 2024-10-29 DOI:10.1016/j.diamond.2024.111699

B. Arjunkumar , R.V. Mangalaraja , C. Ragupathi , Gopal Ramalingam , Mohammed Mujahid Alam , Abdullah G. Al-Sehemi , S.K. Anbukumaran

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Abstract

Achieving a low-cost, high-yield, and environmentally acceptable synthesis of graphene is a significant problem in nanomaterials research. Hence, carbon nanospheres are receiving an increased attention. We have developed a unique and cost-effective method of producing carbon nanospheres from carbon soot. Carbon nanospheres were created using castor oil and virgin green leaf (Anisomeles Malabarica) and then thoroughly examined. When applied to dye-sensitised solar cells and the integrated photo-supercapacitor, the produced soot exhibited the same behavior as reduced graphene oxide. Photoconversion efficiency was 8.47 % in the dye-sensitised solar cells application and in the symmetric supercapacitor device application, it exhibited 11.83 mWh/cm² of energy density and 0.3 mW/cm² of power density which illuminated an LED bulb up to 60 s. The capacitive retention of 85.2 % was achieved after 3000 cycles. Finally, the integrated photo-supercapacitor performed about 3.3 % of the overall efficiency and 38 % of the storage efficiency.

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用于提高效率的集成光电超级电容器装置的绿色碳纳米球

实现石墨烯的低成本、高产率和环境可接受的合成是纳米材料研究中的一个重要问题。因此，碳纳米球受到越来越多的关注。我们开发了一种独特而经济有效的方法，利用碳烟生产碳纳米球。我们使用蓖麻油和原始绿叶（Anisomeles Malabarica）制备了碳纳米球，并对其进行了深入研究。当应用于染料敏化太阳能电池和集成光超级电容器时，所产生的碳烟表现出与还原氧化石墨烯相同的行为。在染料敏化太阳能电池应用中，光电转换效率为 8.47%；在对称超级电容器装置应用中，其能量密度为 11.83 mWh/cm2，功率密度为 0.3 mW/cm2，可为 LED 灯泡照明长达 60 秒。最后，集成光电超级电容器的整体效率约为 3.3%，存储效率为 38%。

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来源期刊

Diamond and Related Materials 工程技术-材料科学：综合

CiteScore

6.00

自引率

14.60%

发文量

702

审稿时长

2.1 months

期刊介绍： DRM is a leading international journal that publishes new fundamental and applied research on all forms of diamond, the integration of diamond with other advanced materials and development of technologies exploiting diamond. The synthesis, characterization and processing of single crystal diamond, polycrystalline films, nanodiamond powders and heterostructures with other advanced materials are encouraged topics for technical and review articles. In addition to diamond, the journal publishes manuscripts on the synthesis, characterization and application of other related materials including diamond-like carbons, carbon nanotubes, graphene, and boron and carbon nitrides. Articles are sought on the chemical functionalization of diamond and related materials as well as their use in electrochemistry, energy storage and conversion, chemical and biological sensing, imaging, thermal management, photonic and quantum applications, electron emission and electronic devices. The International Conference on Diamond and Carbon Materials has evolved into the largest and most well attended forum in the field of diamond, providing a forum to showcase the latest results in the science and technology of diamond and other carbon materials such as carbon nanotubes, graphene, and diamond-like carbon. Run annually in association with Diamond and Related Materials the conference provides junior and established researchers the opportunity to exchange the latest results ranging from fundamental physical and chemical concepts to applied research focusing on the next generation carbon-based devices.