Shashwat Singh

Postdoctoral Fellow
Shashwat Singh

Office: ESC 132

Email: shashwat.singh@uwaterloo.ca, s668singh@uwaterloo.ca

尝颈苍办别诲颈苍:听

Research areas: Solid electrolyte, Na-ion batteries, etc.

Awards:

  • KPIT Shodh Award 2023 (Pune, India) for best thesis in the energy storage category

My work lies at the sweet spot of chemistry, physics, and little bit of engineering. I conduct in-depth investigations of the famous materials tetrahedron: structure-property-processing-performance relationship.聽

For my PhD thesis work, I studied 鈥Structural and Electrochemical Investigation of Bisulfate and Hydroxysulfate based Polyanionic Cathodes.鈥听听

Since its introduction in 1991 by SONY, Li-ion battery (LIB) technology has revolutionized the portable electronics sector. However, with the recent worldwide push toward a 鈥済reen鈥 economy, the demand for efficient electrochemical energy storage based on Li-ion chemistry has grown extensively to include electric vehicles and an improved grid scale storage sector. As the Li-based resources are sparsely distributed and amenable to price manipulation, there is a need to explore 鈥渂eyond Li-ion鈥 chemistry along with the development of earth abundant and environmentally benign novel cathode materials for Li/Na/K ions. In this context, polyanionic compounds are promising cathode candidates offering voltage tunability, based on their inductive effect principle, structural stability, diverse crystal chemistry, and polymorphism. Uniquely, the polyanionic sulfates can provide a framework for economical low temperature synthesis and high voltage cathodes. Using breakthrough works of 3.83 V Li2Fe(SO4)2bisulfate, 3.2 V FeSO4OH and 3.6 V LiFeSO4OH hydroxysulfate as LIB cathode and 3.25 V NaFe(SO4)2eldfellite as sodium ion battery cathode as benchmarks, the corresponding families were explored further to unveil novel cathode materials employing low temperature synthesis approach. The major achievements of my doctoral thesis work based on structure-property (physical and electrochemical) was the unveiling of marinite monoclinic Li2Ni(SO4)2 bisulfate (5.5 V), saranchinaite,听狈补2Cu(SO4)2 conversion electrode, multiple redox in eldfellite NaV(SO4)2 and orthorhombic LiFeSO4OH (3.2 V) LIB cathode.听听聽

As a postdoctoral researcher at U蓝莓视频, I am excited to explore new avenues in the fields of Na-ion batteries, all solid-state Li-S batteries, and solid electrolytes for alkali/alkaline ion batteries.