South Dakota School of Mines and Technology

Asymmetric supercapacitors fabricated with ferrite/CHTL-derived hydrochar electrodes

Huynh K., Maddipudi B., Amar V.S., Shende A., Shende R., Shende A., Shende R., South Dakota School of Mines and Technology, US

Scientific community is striving for novel energy storage devices with superior power/energy density. Among these devices, asymmetric supercapacitors (ASCs) typically have higher power density as compared to batteries whereas higher energy density as compared to [...]

Effect of Biochar Loading on Carbon Nanofibrous Sponge Produced from Biochar and Electrospun Polymer Nanofibers

Numan-Al-Mobin A.M., Maddipudi B., Amar V.S., Shende R.V., Fong H., South Dakota School of Mines and Technology, US

The goal of this study is to process a typical waste product, namely the biochar obtained from the oxygen-limited hydrothermal system of biomass (e.g., corn stover), into the value-added product. Particularly, the 3D carbon nanofibrous [...]

HTL Derived Biochar for Supercapacitor Electrodes

Huynh K., Maddipudi B.K., Amar V.S., Houck J.D., Shende R.V., South Dakota School of Mines and Technology, US

In this study, biochar samples were prepared by conversion of biomass feedstock (corn stover) via catalytic hydrothermal liquefaction (HTL) and later used as electrode material in conjunction with sol-gel derived perovskite based mixed (Mn,Ti)-oxides (Mn:Ti [...]

BTMO Catalyzed Hydrothermal Liquefaction of Lignocellulosic Biomass

Amar V., Shende A., Shende R.V., Shende A., Shende R.V., South Dakota School of Mines and Technology, US

Binary transition metal oxide nanoparticles, M1M2Fe2O4 (where M1 or M2 = Ni, Zn, Co), were prepared using a soft templating approach and characterized by powder x-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy [...]

Cobalt Doped (Mn,Ti)- Oxides for Supercapacitors

Houck J.D., Amar V.S., Shende R.V., South Dakota School of Mines and Technology, US

In this investigation, a (Mn,Ti)-oxide (Mn:Ti 65:35 wt%) was prepared using surfactant templating assisted sol-gel method. To prepare this nanocomposite, sol-A with Ti precursor and sol-B containing Mn precursor were separately prepared using the required [...]

Core-shell and Immobilized Nanoscale Ferrites for H2 Generation From Thermochemical Water-splitting

Amar V., Puszynski J., Shende R., South Dakota School of Mines and Technology, US

In this study, water was used as energy carrier for H2 generation via thermochemical water-splitting process using core-shell and immobilized nanoscale ferrite materials. Core-shell ferrite nanoparticles were synthesized using pluronic P123 templating assisted sol-gel method. [...]

Graphene Functionalized Mesoporous Mn and Ti Oxides for Supercapacitors

Houck J., Amar V., Shende A., Shende R., Shende A., Shende R., South Dakota School of Mines and Technology, US

In this investigation, several mesoporous nanocomposites such as TiO2/MnO2, TiO2/Mn2O3, TiO2/MnO2/Mn2O3 and TiO2/MnO2/Mn2O3/MnTiO3 were synthesized using the pluronic 123 templating assisted sol-gel method. To prepare these nanocomposites, sol-A with Ti precursor and sol-B containing Mn [...]

Alignment of Different Functional Single Wall Carbon Nanotubes using Fe2O3 Nanoparticles under External Magnetic Field

Younes H., Hong H., South Dakota School of Mines and Technology, US

In this work we describe a new approach to align functionalized single walled carbon nanotubes (SWNTs) by γ-Fe2O3 in the presence of an external magnetic field without using chemical surfactant. Five different functionalized SWNTs are [...]

Rheological Optimization and Stability Study of Silver Nano-Ink for InkJet Printing of Solar Electrodes Using Industrial Printhead

Shankar R., Amert A., Kellar J.J., Whites K.W., South Dakota School of Mines and Technology, US

we have produced silver nanoparticles using the polyol synthesis and have tailored the ink formulation by choosing a solvent mixture to meet the rheological requirement of industrial printhead (XAAR 1001FF). A solvent mixture which can [...]

Rheological Optimization and Stability Study of Silver Nano-Ink for InkJet Printing of Solar Electrodes Using Industrial Printhead

Shankar R., Amert A., Kellar J.J., Whites K.W., South Dakota School of Mines and Technology, US

we have produced silver nanoparticles using the polyol synthesis and have tailored the ink formulation by choosing a solvent mixture to meet the rheological requirement of industrial printhead (XAAR 1001FF). A solvent mixture which can [...]