9 results on '"Srinivasa Rao, Sunkara"'
Search Results
2. Revolutionizing energy storage: exploring the nanoscale frontier of all-solid-state batteries.
- Author
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Anil Kumar, Yedluri, Roy, Nipa, Ramachandran, Tholkappiyan, Assiri, Mohammed A., Srinivasa Rao, Sunkara, Moniruzzaman, Md, and Joo, Sang Woo
- Subjects
GRID energy storage ,ENERGY harvesting ,IONIC conductivity ,SOLID electrolytes ,ENERGY storage ,SUPERIONIC conductors - Abstract
Due to their distinctive security characteristics, all-solid-state batteries are seen as a potential technology for the upcoming era of energy storage. The flexibility of nanomaterials shows enormous potential for the advancement of all-solid-state batteries' exceptional power and energy storage capacities. These batteries might be applied in many areas such as large-scale energy storage for power grids, as well as in the creation of foldable and flexible electronics, and portable gadgets. The most difficult aspect of creating a comprehensive nanoscale all-solid-state battery assembly is the task of decreasing the particle size of the solid electrolyte while maintaining its excellent ionic conductivity. Materials possessing nanoscale structural features and a substantial electrochemically active surface area have the potential to significantly enhance power characteristics and the cycle life. This might bring about substantial changes to existing energy storage models. The primary objective of this research is to summarize the latest advancements in utilizing nanomaterials for energy harvesting in various all-solid-state battery assemblies. This study examines the most complex solid–solid interfaces of all-solid-state batteries, as well as feasible methods for implementing nanomaterials in such interfaces. Currently, there is significant attention on the necessity to develop electrode–solid electrolyte interfaces that exhibit nanoscale particle articulation and other characteristics related to the behavior of lithium ions. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
3. Powering the Future: Advanced Battery Management Systems (BMS) for Electric Vehicles.
- Author
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Krishna, T. N. V., Kumar, Seelam V. S. V. Prabhu Deva, Srinivasa Rao, Sunkara, and Chang, Liuchen
- Subjects
BATTERY management systems ,LITHIUM-ion batteries ,ELECTRIC vehicles ,SWITCHING systems (Telecommunication) ,ENERGY transfer - Abstract
This paper introduces a novel approach for rapidly balancing lithium-ion batteries using a single DC–DC converter, enabling direct energy transfer between high- and low-voltage cells. Utilizing relays for cell pair selection ensures cost-effectiveness in the switch network. The control system integrates a battery-monitoring IC and an MCU to oversee cell voltage and ensure battery protection. A prototype circuit with twelve lithium-ion batteries demonstrates the method's efficacy, achieving a remarkable balancing time of 48 min during charging with a maximum efficiency of 89.85%. Comparative analysis with other methods underscores the superior performance of the proposed balancing circuit in terms of balancing time and implementation cost. Furthermore, this paper delves into hardware aspects of battery management systems (BMSs) for electric vehicles and stationary applications. It offers an overview of prevailing concepts in state-of-the-art systems, aiding readers in assessing considerations essential for BMS design in various applications. The discussion includes examples of battery packs sourced from commercially available electric vehicles. Subsequently, the manuscript addresses implementation aspects concerning the measurement of critical physical variables such as voltage, current, and temperature, alongside balancing strategies. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
4. From lab to field: Prussian blue frameworks as sustainable cathode materials.
- Author
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Anil Kumar, Yedluri, Sana, Siva Sankar, Ramachandran, Tholkappiyan, Assiri, Mohammed A., Srinivasa Rao, Sunkara, and Kim, Seong Cheol
- Subjects
PRUSSIAN blue ,ENERGY conversion ,CORROSION & anti-corrosives ,STORAGE batteries ,INDUSTRIAL safety ,CATHODES ,METALLIC surfaces - Abstract
Prussian blue and Prussian blue analogues have attracted increasing attention as versatile framework materials with a wide range of applications in catalysis, energy conversion and storage, and biomedical and environmental fields. In terms of energy storage and conversion, Prussian blue-based materials have emerged as suitable candidates of growing interest for the fabrication of batteries and supercapacitors. Their outstanding electrochemical features such as fast charge–discharge rates, high capacity and prolonged cycling life make them favorable for energy storage application. Furthermore, Prussian blue and its analogues as rechargeable battery anodes can advance significantly by the precise control of their structure, morphology, and composition at the nanoscale. Their tunable structural and electronic properties enable the detection of many types of analytes with high sensitivity and specificity, and thus, they are ideal materials for the development of sensors for environmental detection, disease trend monitoring, and industrial safety. Additionally, Prussian blue-based catalysts display excellent photocatalytic performance for the degradation of pollutants and generation of hydrogen. Specifically, their excellent light capturing and charge separation capabilities make them stand out in photocatalytic processes, providing a sustainable option for environmental remediation and renewable energy production. Besides, Prussian blue coatings have been studied particularly for corrosion protection, forming stable and protective layers on metal surfaces, which extend the lifespan of infrastructural materials in harsh environments. Prussian blue and its analogues are highly valuable materials in healthcare fields such as imaging, drug delivery and theranostics because they are biocompatible and their further functionalization is possible. Overall, this review demonstrates that Prussian blue and related framework materials are versatile and capable of addressing many technical challenges in various fields ranging from power generation to healthcare and environmental management. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
5. Facile Hydrothermal Synthesis of CuS/MnS Composite Material Improved the Power Conversion Efficiency of Quantum-Dot Sensitized Solar Cells
- Author
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Ikkurthi Kanaka Durga, Suresh Alapati, and Srinivasa Rao Sunkara
- Subjects
Auxiliary electrode ,Materials science ,Scanning electron microscope ,Electrode ,Composite number ,Energy conversion efficiency ,Hydrothermal synthesis ,Composite material ,Electrochemistry ,Hydrothermal circulation - Abstract
In the past decade, significant development has been made in the fabrication of new electrocatalysts for high-performance energy conversion and storage. Among various approaches, metal sulfides such as CuS and MnS have shown great potential as effective non precious electrocatalysts in tailoring the atomic and electronic structures of catalytically active materials toward enhanced electrocatalytic activity. We demonstrate here the use of CuS and MnS composites as cost-effective counter electrode material in Quantum-dot sensitized solar cells (QDSSCs). The introduced new composite material has been synthesized using simple and facile process of hydrothermal methods. The surface morphology, composition and composite structure have been confirmed by high-resolution scanning electron microscopy (HR-SEM), energy-dispersive X-ray spectroscopy (EDX) and X-ray diffraction (XRD). The composite CuS/MnS deposited on FTO substrate-based QDSSCs achieves superior power conversion efficiency (PCE) of 4.38% than those of bare CuS (3.71%) and MnS (2.02%) counter electrodes. The electrochemical analysis showed that the CuS/MnS/FTO composite shows a smaller charger-transfer resistance between the counter electrode/polysulfide electrolyte than the CuS and MnS electrodes, respectively.
- Published
- 2021
6. Facile Synthesis of Coral Reef-Like ZnO/CoS2 Nanostructure on Nickel Foam as an Advanced Electrode Material for High-Performance Supercapacitors
- Author
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Durga, Ikkurthi Kanaka, primary, Raghavendra, Kummara Venkata Guru, additional, Kundakarla, Naga Bhushanam, additional, Alapati, Suresh, additional, Ahn, Jin-Woo, additional, and Srinivasa Rao, Sunkara, additional
- Published
- 2021
- Full Text
- View/download PDF
7. Facile Synthesis of Coral Reef-Like ZnO/CoS 2 Nanostructure on Nickel Foam as an Advanced Electrode Material for High-Performance Supercapacitors.
- Author
-
Durga, Ikkurthi Kanaka, Raghavendra, Kummara Venkata Guru, Kundakarla, Naga Bhushanam, Alapati, Suresh, Ahn, Jin-Woo, and Srinivasa Rao, Sunkara
- Subjects
SUPERCAPACITORS ,ZINC oxide ,ELECTROACTIVE substances ,SUPERCAPACITOR electrodes ,ELECTROCHEMICAL analysis ,IMPEDANCE spectroscopy ,FOAM - Abstract
Nanocomposite electrodes receive much attention because of their excellent energy storage nature. Electrodes for supercapacitors have come a major source of interest. In this pursuit, the current work elucidates binder-free coral reefs resembling ZnO/CoS
2 nanoarchitectures synthesized on the surface of Ni foams employing the cost-effective hydrothermal route. The Zno/CoS2 nanocomposite demonstrated excellent battery-type behavior, which can be employed for supercapcitor application. Various analyses were carried out in the current study, such as X-ray diffraction and high-resolution scanning electron microscopy, which allowed defining the crystalline nature and morphology of surface with ZnO/CoS2 nanoarchitectures. Electrochemical measures such as cyclic voltammetry, galvanostatic charge discharge, and potentiostatic impedance spectroscopy confirmed the battery-type behavior of the material. The synthesized precursors of binder-free ZnO/CoS2 nanostructures depicted an excellent specific capacity of 400.25 C·g−1 at 1 A·g−1 , with a predominant cycling capacity of 88. 2% and retention holding of 68% at 10 A·g−1 and 2 A·g−1 , even after 4000 cycles, representing an improvement compared to the pristine ZnO and CoS2 electroactive materials. Therefore, the electrochemical and morphological analyses suggest the excellent behavior of the ZnO/CoS2 nanoarchitectures, making them promising for supercapacitors. [ABSTRACT FROM AUTHOR]- Published
- 2021
- Full Text
- View/download PDF
8. Revolutionizing energy storage: exploring the nanoscale frontier of all-solid-state batteries.
- Author
-
Anil Kumar Y, Roy N, Ramachandran T, Assiri MA, Srinivasa Rao S, Moniruzzaman M, and Joo SW
- Abstract
Due to their distinctive security characteristics, all-solid-state batteries are seen as a potential technology for the upcoming era of energy storage. The flexibility of nanomaterials shows enormous potential for the advancement of all-solid-state batteries' exceptional power and energy storage capacities. These batteries might be applied in many areas such as large-scale energy storage for power grids, as well as in the creation of foldable and flexible electronics, and portable gadgets. The most difficult aspect of creating a comprehensive nanoscale all-solid-state battery assembly is the task of decreasing the particle size of the solid electrolyte while maintaining its excellent ionic conductivity. Materials possessing nanoscale structural features and a substantial electrochemically active surface area have the potential to significantly enhance power characteristics and the cycle life. This might bring about substantial changes to existing energy storage models. The primary objective of this research is to summarize the latest advancements in utilizing nanomaterials for energy harvesting in various all-solid-state battery assemblies. This study examines the most complex solid-solid interfaces of all-solid-state batteries, as well as feasible methods for implementing nanomaterials in such interfaces. Currently, there is significant attention on the necessity to develop electrode-solid electrolyte interfaces that exhibit nanoscale particle articulation and other characteristics related to the behavior of lithium ions.
- Published
- 2024
- Full Text
- View/download PDF
9. From lab to field: Prussian blue frameworks as sustainable cathode materials.
- Author
-
Anil Kumar Y, Sana SS, Ramachandran T, Assiri MA, Srinivasa Rao S, and Kim SC
- Abstract
Prussian blue and Prussian blue analogues have attracted increasing attention as versatile framework materials with a wide range of applications in catalysis, energy conversion and storage, and biomedical and environmental fields. In terms of energy storage and conversion, Prussian blue-based materials have emerged as suitable candidates of growing interest for the fabrication of batteries and supercapacitors. Their outstanding electrochemical features such as fast charge-discharge rates, high capacity and prolonged cycling life make them favorable for energy storage application. Furthermore, Prussian blue and its analogues as rechargeable battery anodes can advance significantly by the precise control of their structure, morphology, and composition at the nanoscale. Their tunable structural and electronic properties enable the detection of many types of analytes with high sensitivity and specificity, and thus, they are ideal materials for the development of sensors for environmental detection, disease trend monitoring, and industrial safety. Additionally, Prussian blue-based catalysts display excellent photocatalytic performance for the degradation of pollutants and generation of hydrogen. Specifically, their excellent light capturing and charge separation capabilities make them stand out in photocatalytic processes, providing a sustainable option for environmental remediation and renewable energy production. Besides, Prussian blue coatings have been studied particularly for corrosion protection, forming stable and protective layers on metal surfaces, which extend the lifespan of infrastructural materials in harsh environments. Prussian blue and its analogues are highly valuable materials in healthcare fields such as imaging, drug delivery and theranostics because they are biocompatible and their further functionalization is possible. Overall, this review demonstrates that Prussian blue and related framework materials are versatile and capable of addressing many technical challenges in various fields ranging from power generation to healthcare and environmental management.
- Published
- 2024
- Full Text
- View/download PDF
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