Next Generation Energy Storage Using Unconventional Materials

Researchers involved in Project T06-Z01 are pursuing advanced battery materials on numerous fronts.  Silicon and germanium are recognized as being among the most promising anode materials for Li-ion batteries because of their high theoretical specific capacity (as high as ~4200 mAh/g) but challenges remain including: low electrical conductivity, large volume changes during lithiation/delithiation. Important lingering questions include: what roles do well-defined size, surface chemistry, morphology (e.g., nanoparticles and nanosheets), and host matrix (e.g., silicon nanosheet or graphene aerogels, Li+ transporting conductive polymers, etc.) play in device performance? Our team is evaluating these parameters, as well as designing new hybrids that, among other things, could offer “self-healing” based upon directed, reversible self-assembly.  

Alberta Graduate Excellence Scholarship

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Graduate Student Scholarship

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Mitacs Globalink Award

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A Tale of Seemingly “Identical” Silicon Quantum Dot Families: Structural Insight into Silicon Quantum Dot Photoluminescence

Jonathan G.C. Veinot, Al Meldrum

Peer-Reviewed Journal Article

Exploring Structural Nuances in Germanium Halide Perovskites Using Solid-State $\less$sup$\greater$73$\less$/sup$\greater$Ge and $\less$sup$\greater$133$\less$/sup$\greater$Cs NMR Spectroscopy

Yingjie He, Vladimir K Michaelis

Peer-Reviewed Journal Article

High-Capacitance Pseudocapacitors from Li+ Ion Intercalation in Nonporous, Electrically Conductive 2D Coordination Polymers

Vladimir K Michaelis, Guy Bernard, Madhu Sudan Chaudhary

Peer-Reviewed Journal Article

Hybrid Nanomaterials for Photocatalytic Conversion of CO2

Conference/Symposium/Workshop Contribution

Hydride Terminated SiNP:Cutting through the Layers Using 29Si MAS and DNP NMR Spectroscopy

Vladimir K Michaelis, Michelle Ha

Conference/Symposium/Workshop Contribution

Insights into the Structure of Silicon Nanocrystals

Vladimir K Michaelis, Michelle Ha

Conference/Symposium/Workshop Contribution

Intense terahertz pulses inhibit ras signaling and other cancer-associated signaling pathways in human skin tissue models

Frank Hegmann, David Purschke

Peer-Reviewed Journal Article

Liquid Crystalline Lithium-Ion Electrolytes Derived from Biodegradable Cyclodextrin

Vladimir K Michaelis, Amit Bhattacharya

Peer-Reviewed Journal Article

Mesoporous GeOx/Ge/C as a Highly Reversible Anode Material with High Specific Capacity for Lithium-Ion Batteries

Jonathan G.C. Veinot

Peer-Reviewed Journal Article

Mixing, Domains, and Fast Li-Ion Dynamics in Ternary Li\textendash Sb\textendashBi Battery Anode Alloys

Vladimir K Michaelis, Amit Bhattacharya

Peer-Reviewed Journal Article

N-Heterocyclic carbene stabilization of germanium dihydrides for materials applications

Conference/Symposium/Workshop Contribution

N-heterocyclic carbene-stabilized GeH2 moieties and their applications to material syntheses

Conference/Symposium/Workshop Contribution

Photocatalytic mechanism control and study of carrier dynamics in CdS@C3N5 core-shell nanowires

Karthik Shankar, Pawan Kumar, Kazi Alam, Ajay Manuel, Frank Hegmann, Vladimir K Michaelis, Guy Bernard, David Purschke, Narendra Chaulagain, John Garcia

Peer-Reviewed Journal Article

Reverse Transcription Lesion-Induced DNA Amplification: An Instrument-Free Isothermal Method to Detect RNA

Juli Gibbs

Peer-Reviewed Journal Article

Shining in a New Size Regime: Silicon Nanoparticle Assemblies

Conference/Symposium/Workshop Contribution

Silicon Nanocrystals: From Solution to Solid State

Doctoral Thesis/Dissertation

Silicon Nanoparticles from the Inside Out: Exploring the Internal Structure of Silicon Nanoparticles and Its Impact on Their Photoluminescence

Doctoral Thesis/Dissertation

Silicon Nanoparticles: Are they Crystalline from the Core to the Surface?

Jonathan G.C. Veinot, Vladimir K Michaelis, Michelle Ha

Peer-Reviewed Journal Article

Silicon Quantum Dot–Polymer Fabry–Pérot Resonators with Narrowed and Tunable Emissions

Bruno Luppi, I Teng Cheong

Peer-Reviewed Journal Article

Size and Surface Edicts of Silicon Nanocrystals in Graphene Aerogel Composite Anodes for Lithium Ion Batteries

Jonathan G.C. Veinot

Peer-Reviewed Journal Article

Surface Functionalization of Germanium Nanosheets

Conference/Symposium/Workshop Contribution

Surface Functionalization of Germanium Nanosheets

Conference/Symposium/Workshop Contribution

Surface Functionalization of Germanium Nanosheets

Conference/Symposium/Workshop Contribution

Surface-Anisotropic Janus Silicon Quantum Dots via Masking on 2D Silicon Nanosheets

Peer-Reviewed Journal Article

Synthesis and Functionalization of 1D, 2D Germanium-based Nanostructures

Doctoral Thesis/Dissertation

Synthesis of Self-Healing and Self-Replicating Nanomaterials Based on DNA and Nanoparticles

Conference/Symposium/Workshop Contribution

Synthesis, Properties, and Derivatization of Poly(dihydrogermane): A Germanium-Based Polyethylene Analogue

Ziqi Li

Peer-Reviewed Journal Article

Tailoring B-doped silicon nanocrystal surface chemistry via phosphorus pentachloride – mediated surface alkoxylation

Vladimir K Michaelis, Sarah Milliken, I Teng Cheong

Peer-Reviewed Journal Article

Tailoring Material Properties of Silicon Nanocrystals via Doping

Sarah Milliken

Conference/Symposium/Workshop Contribution

Thermally Induced Dehydrogenative Coupling of Organosilanes and H-Terminated Silicon Quantum Dots onto Germanane Surfaces

Md Asjad Hossain

Peer-Reviewed Journal Article

Time-Resolved Terahertz Spectroscopy of Nanomaterials

Conference/Symposium/Workshop Contribution

Transtion-metal doping SiNPs

Conference/Symposium/Workshop Contribution

Ultrafast Carrier Dynamics of CdS Nanowires Wrapped In C3N5 Nanosheets

Karthik Shankar, Kazi Alam, Frank Hegmann, David Purschke

Conference/Symposium/Workshop Contribution

Ultrafast photoconductivity and terahertz vibrational dynamics in double helix SnIP nanowires

Frank Hegmann, David Purschke

Peer-Reviewed Journal Article

Understanding the Anatomy of a Silicon Nanocrystal

Vladimir K Michaelis, Michelle Ha

Conference/Symposium/Workshop Contribution

Understanding the Anatomy of a Silicon Nanocrystal

Vladimir K Michaelis, Michelle Ha

Conference/Symposium/Workshop Contribution

Water-Assisted Transfer Patterning of Nanomaterials

Jonathan G.C. Veinot, I Teng Cheong

Peer-Reviewed Journal Article

“Turning the dials”: controlling synthesis, structure, composition, and surface chemistry to tailor silicon nanoparticle properties

Sarah Milliken, I Teng Cheong, Ziqi Li

Peer-Reviewed Journal Article