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119 results on '"Sundriyal, Shashank"'

6. Contributors

Author

Boruah, Tribani, primary, Cai, Weiwei, additional, Cui, Xun, additional, Das, Dipak Kumar, additional, Doan, Thi Luu Luyen, additional, Gao, Likun, additional, García, Álvaro, additional, Gautam, Sonali, additional, Goyal, Charu, additional, Gupta, Ram K., additional, Hatshan, Mohammad Rafe, additional, Honorato, Ana Maria Borges, additional, Hu, Guangzhi, additional, Ibraheem, Shumaila, additional, Ingsel, Tenzin, additional, Iqbal, Rashid, additional, Khalid, Mohd, additional, Kim, Nam Hoon, additional, Kumar, Anuj, additional, Kumar, Bijandra, additional, Lee, Joong Hee, additional, Li, Jing, additional, Lin, Zhiqun, additional, Mushtaq, Muhammad Asim, additional, Nguyen, Dinh Chuong, additional, Nguyen, Tuan Anh, additional, Retuerto, María, additional, Rojas, Sergio, additional, Saleem, Adil, additional, Sulaiman, Muhammad Rizwan, additional, Sundriyal, Shashank, additional, Tabish, Mohammad, additional, Torrero, Jorge, additional, Tran, Duy Thanh, additional, Varela, Hamilton, additional, Xiao, Shenglin, additional, Yang, Yingkui, additional, Yang, Zehui, additional, Yasin, Ghulam, additional, Ye, Zihao, additional, Zhang, Lei, additional, Zhang, Quan, additional, Zhao, Xue, additional, and Zhu, Yuan-Xin, additional

Published
2022
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28. Copper foam supported g-C3N4-metal–organic framework bacteria biohybrid cathode catalyst for CO2 reduction in microbial electrosynthesis.

Author

Noori, Md Tabish, Mansi, N. A., Sundriyal, Shashank, Shrivastav, Vishal, Giri, Balendu Sekhar, Holdynski, Marcin, Nogala, Wojciech, Tiwari, Umesh K., Gupta, Bhavana, and Min, Booki

Abstract

Microbial electrosynthesis (MES) presents a versatile approach for efficiently converting carbon dioxide (CO2) into valuable products. However, poor electron uptake by the microorganisms from the cathode severely limits the performance of MES. In this study, a graphitic carbon nitride (g-C3N4)-metal–organic framework (MOF) i.e. HKUST-1 composite was newly designed and synthesized as the cathode catalyst for MES operations. The physiochemical analysis such as X-ray diffraction, scanning electron microscopy (SEM), and X-ray fluorescence spectroscopy showed the successful synthesis of g-C3N4-HKUST-1, whereas electrochemical assessments revealed its enhanced kinetics for redox reactions. The g-C3N4-HKUST-1 composite displayed excellent biocompatibility to develop electroactive biohybrid catalyst for CO2 reduction. The MES with g-C3N4-HKUST-1 biohybrid demonstrated an excellent current uptake of 1.7 mA/cm2, which was noted higher as compared to the MES using g-C3N4 biohybrid (1.1 mA/cm2). Both the MESs could convert CO2 into acetic and isobutyric acid with a significantly higher yield of 0.46 g/L.d and 0.14 g/L.d respectively in MES with g-C3N4-HKUST-1 biohybrid and 0.27 g/L.d and 0.06 g/L.d, respectively in MES with g-C3N4 biohybrid. The findings of this study suggest that g-C3N4-HKUST-1 is a highly efficient catalytic material for biocathodes in MESs to significantly enhance the CO2 conversion. [ABSTRACT FROM AUTHOR]

Published
2023
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36. Zeolitic Imidazole Framework Derived Cobalt Phosphide/Carbon Composite and Waste Paper Derived Porous Carbon for High‐Performance Supercapattery.

Author

Sundriyal, Shashank, Dubey, Prashant, Mansi, Gupta, Bhavana, Holdynski, Marcin, Bonarowska, Magdalena, Deep, Akash, Shrivastav, Vishal, and Nogala, Wojciech

Subjects
WASTE paper, COBALT phosphide, NEGATIVE electrode, SUPERCAPACITOR electrodes, HYBRID systems, ENERGY density
Abstract

Metal–organic frameworks (MOFs) derived nanostructures receive immense research focus due to its high porosity, conductivity, and structural tailrolability features. In this work, porous Zeolitic Imidazole Framework‐67 (ZIF‐67) to synthesize cobalt phosphide/carbon composite (ZCoPC) that serves as a positive electrode is utilized. Furthermore, porous and conductive office paper derived carbon (OPC) are utilized as a negative electrode to make a hybrid system. The metalloid characteristics, high conductivity, and good porosity of ZCoPC material makes it a high‐performance battery like electrode. ZCoPC electrode achieves maximum specific capacity of 192.6 mAh g−1 at 1 A g−1 using 1 m potassium hydroxide (KOH) electrolyte. Furthermore, surface and diffusion charge participation investigation are also undergone for ZCoPC electrode that helps in determining the actual charge dynamics occurring in the electrode. In addition, a supercapattery device is assembled using ZCoPC as battery electrode and OPC as supercapacitor electrode. The as fabricated OPC//ZCoPC hybrid supercapattery device delivers extraordinary energy density of 31.6 Wh kg−1 with a power density of 700 W kg−1 and also a long cycle life of 92.3% even after 10,000 charge–discharge cycles. Hence, these outcomes demonstrate that the synergy of porous MOF derived metal phosphide and OPC electrodes are beneficial for supercapattery devices. [ABSTRACT FROM AUTHOR]

Published
2023
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37. Diffusion controlled electrochemical analysis of MoS2 and MOF derived metal oxide–carbon hybrids for high performance supercapacitors.

Author

Shrivastav, Vishal, Mansi, Dubey, Prashant, Shrivastav, Vaishali, Kaur, Ashwinder, Hołdyński, Marcin, Krawczyńska, Agnieszka, Tiwari, Umesh K., Deep, Akash, Nogala, Wojciech, and Sundriyal, Shashank

Abstract

In the context of emerging electric devices, the demand for advanced energy storage materials has intensified. These materials must encompass both surface and diffusion-driven charge storage mechanisms. While diffusion-driven reactions offer high capacitance by utilizing the bulk of the material, their effectiveness diminishes at higher discharge rates. Conversely, surface-controlled reactions provide rapid charge/discharge rates and high power density. To strike a balance between these attributes, we devised a tri-composite material, TiO2/Carbon/MoS2 (T10/MoS2). This innovative design features a highly porous carbon core for efficient diffusion and redox-active MoS2 nanosheets on the surface. Leveraging these characteristics, the T10/MoS2 composite exhibited impressive specific capacitance (436 F/g at 5 mV/s), with a significant contribution from the diffusion-controlled process (82%). Furthermore, our symmetrical device achieved a notable energy density of ~ 50 Wh/kg at a power density of 1.3 kW/kg. This concept holds promise for extending the approach to other Metal–Organic Framework (MOF) structures, enabling enhanced diffusion-controlled processes in energy storage applications. [ABSTRACT FROM AUTHOR]

Published
2023
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50. Waste Paper-Derived Porous Carbon Incorporated with Mesoporous ZIF-8 Crystals for Symmetrical Supercapacitors

Author

Kaur, Ashwinder, Shrivastav, Vishal, Dubey, Prashant, Deep, Akash, Mudahar, Isha, Sundriyal, Shashank, and Mishra, Sunita

Abstract

Activated carbon (AC) is a low-cost porous material with high conductivity and a specific surface area. Recently, commercially available AC has been replaced by waste-derived activated carbons (WDACs) as they are renewable, cost-effective, and eco-friendly. The synthesis of metal–organic frameworks (MOFs) embedded in the WDAC matrix as a composite electrode is carried out for energy storage applications. Briefly, the zinc-based zeolitic imidazole framework (ZIF-8) is combined with waste paper-derived activated carbon (PAC-800) and used to fabricate a solid-state symmetrical supercapacitor that delivered an energy density of 37.1 Wh kg–1at a power density of 880.1 W kg–1. Compared to pristine materials (ZIF-8 and PAC-800 alone), the electrochemical performance of the PAC-800/ZIF-8 composite electrode is greatly enhanced due to the mesoporous nature of ZIF-8.

Published
2023
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