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RISS 인기검색어
- 검색키워드
- 저자 : Monika Nehra (검색결과 4 건)
- 무료
- 기관 내 무료
- 유료
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Carbon nanotubes: A potential material for energy conversion and storage
Kumar, Sandeep,Nehra, Monika,Kedia, Deepak,Dilbaghi, Neeraj,Tankeshwar, K,Kim, Ki-Hyun Elsevier 2018 Progress in energy and combustion science Vol.64 No.-
<P><B>Abstract</B></P> <P>Carbon nanotube-based materials are gaining considerable attention as novel materials for renewable energy conversion and storage. The novel optoelectronic properties of CNTs (e.g., exceptionally high surface area, thermal conductivity, electron mobility, and mechanical strength) can be advantageous for applications toward energy conversion and storage. Although many nanomaterials are well known for the unique structure-property relations, such relations have been sought most intensively from CNTs due to their extreme diversity and richness in structures. For the development of energy-related devices (like photovoltaic cells, supercapacitors, and lithium ion batteries), it is critical to conduct pre-evaluation of their design, operation, and performance in terms of cost, life time, performance, and environmental impact. This critical review was organized to address the recent developments in the use of CNT-based materials as working/counter electrodes and electrolytes in photovoltaic devices and as building blocks in next-generation flexible energy storage devices. The most promising research in the applications of CNTs toward energy conversion and storage is highlighted based on both computational and experimental studies along with the challenges for developing breakthrough products.</P>
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Quantum-sized nanomaterials for solar cell applications
Kumar, Sandeep,Nehra, Monika,Deep, Akash,Kedia, Deepak,Dilbaghi, Neeraj,Kim, Ki-Hyun Elsevier 2017 RENEWABLE & SUSTAINABLE ENERGY REVIEWS Vol.73 No.-
<P><B>Abstract</B></P> <P>To date, the development of clean and sustainable energy sources has been a central focal point of research, supporting the worldwide rising demand for energy along with associated environmental concerns. The abundance of solar energy on the surface of the earth and its popular appeal makes it a promising candidate to comply with long-term energy demands. In this article, we provide a comprehensive review on different generations of solar cell based on the technological and economic aspects. The focus is on nanomaterial-based solar cells such as quantum dot sensitized solar cells (QDSSCs), a new PV mechanism that offers a new pathway for controlling energy flow. Over the past few years, a significant improvement has been achieved in the energy conversion efficiency (ECE) of QDSSCs (e.g., from 1% to beyond 11%). As such, they are a very promising alternative to conventional crystalline and thin film PV technologies due to their low cost, easy fabrication, and high performance. This review highlights the progress of QDSSCs along with future scope of innovative graphene structures, e.g., graphene-semiconductor nanomaterial (G-SNM), graphene-carbon nanotubes (G-CNT), and graphene-metal nanomaterial (G-MNM) hybrids in PV cells. In addition to graphene, we discuss other 2D materials that have remarkable optoelectronic properties for PV devices. The ECE of green QDSSCs (~11.61% certified) is now approaching that of dye-sensitized solar cells (~13%) through the technical advancement of many counterparts (e.g., photo-electrodes, sensitizers, electrolytes, and counter electrodes). Therefore, QDSSCs exhibit sufficient potential for future research focusing on the development of highly efficient solar cells.</P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
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Recent advances and remaining challenges for polymeric nanocomposites in healthcare applications
Kumar, Sandeep,Sarita, Sandeep,Nehra, Monika,Dilbaghi, Neeraj,Tankeshwar, K.,Kim, Ki-Hyun Elsevier 2018 Progress in polymer science Vol.80 No.-
<P><B>Abstract</B></P> <P>Remarkable advancements in material technologies have accelerated the use of many new materials and their hybrids and composites in diverse applications. Among such available options, polymer nanocomposites are recognized to have the potential to bring future revolution, especially because of their flexible functionalities and related advantages (e.g., good strength, large surface area to volume ratio, large flame retardancy, high elastic modulus, enhanced density, and thermo-mechanical/optoelectronic/magnetic properties). These nanocomposites have been successfully incorporated into diverse fields of applications such as drug delivery, tissue engineering, gene therapy, food preservation, biosensing, and bioimaging. Thus, the primary focus of this review is placed to give an integrated overview of polymer nanocomposites along with their synthesis routes, surface treatment strategies, and applications in the healthcare sector (e.g., drug delivery, 3D bio-implant, bioimaging, food processing, and other miscellaneous biomedical applications). Our discussion also highlights future directions for this emerging field of research.</P>
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