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

Nahida Akter

Award

Graduate Student Scholarship

Chuyi Ni

Award

Mitacs Globalink Award

Award

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

Jonathan G.C. Veinot, Lijuan Zhang

Scholarly Refereed Journal

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, Chuyi Ni

Scholarly Refereed Journal

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

Vladimir K Michaelis, Guy Bernard, Madhu Sudan Chaudhary

Scholarly Refereed Journal

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, Riley Hooper

Conference/Symposium/Workshop Contribution

Insights into the Structure of Silicon Nanocrystals

Vladimir K Michaelis, Michelle Ha, Riley Hooper

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

Scholarly Refereed Journal

Liquid Crystalline Lithium-Ion Electrolytes Derived from Biodegradable Cyclodextrin

Vladimir K Michaelis, Amit Bhattacharya

Scholarly Refereed Journal

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

Jonathan G.C. Veinot

Scholarly Refereed Journal

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

Jillian Mary Buriak, Vladimir K Michaelis, Amit Bhattacharya

Scholarly Refereed Journal

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, Charles Jensen, Guy Bernard, David Purschke, Riley Hooper, Narendra Chaulagain, John Garcia

Scholarly Refereed Journal

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

Juli Gibbs

Scholarly Refereed Journal

Shining in a New Size Regime: Silicon Nanoparticle Assemblies

Kevin O'Connor

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

Scholarly Refereed Journal

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

William Morrish, Bruno Luppi, I Teng Cheong, Leanne Milburn

Scholarly Refereed Journal

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

Jillian Mary Buriak, Jonathan G.C. Veinot

Scholarly Refereed Journal

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

Scholarly Refereed Journal

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

Nahida Akter

Conference/Symposium/Workshop Contribution

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

Chuyi Ni, Ziqi Li

Scholarly Refereed Journal

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

Vladimir K Michaelis, Sarah Milliken, I Teng Cheong

Scholarly Refereed Journal

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

Scholarly Refereed Journal

Time-Resolved Terahertz Spectroscopy of Nanomaterials

Charles Jensen

Conference/Symposium/Workshop Contribution

Transtion-metal doping SiNPs

Riley Hooper

Conference/Symposium/Workshop Contribution

Ultrafast Carrier Dynamics of CdS Nanowires Wrapped In C3N5 Nanosheets

Karthik Shankar, Kazi Alam, Frank Hegmann, Charles Jensen, David Purschke

Conference/Symposium/Workshop Contribution

Ultrafast photoconductivity and terahertz vibrational dynamics in double helix SnIP nanowires

Frank Hegmann, Charles Jensen, David Purschke

Scholarly Refereed Journal

Understanding the Anatomy of a Silicon Nanocrystal

Vladimir K Michaelis, Michelle Ha, Riley Hooper

Conference/Symposium/Workshop Contribution

Understanding the Anatomy of a Silicon Nanocrystal

Vladimir K Michaelis, Michelle Ha, Riley Hooper

Conference/Symposium/Workshop Contribution

Water-Assisted Transfer Patterning of Nanomaterials

Jonathan G.C. Veinot, I Teng Cheong

Scholarly Refereed Journal

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

Christopher Robidillo, Sarah Milliken, Kevin O'Connor, I Teng Cheong, Ziqi Li, Riley Hooper

Scholarly Refereed Journal