Publications

Fast formation cycling for lithium ion batteries

Journal: Journal of Power Sources

The formation process for lithium ion batteries typically takes several days or more, and it is necessary for providing a stable solid electrolyte interphase on the anode (at low potentials vs. Li/Li+) for preventing irreversible consumption of electrolyte and lithium ions. An analogous layer known as...

Colossal super saturation of oxygen at the iron-aluminum interfaces fabricated using solid state welding

Journal: Scripta Materialia

Solid state joining is achieved in three steps, (i) interface asperity deformation, (ii) oxide dispersion, followed by (iii) atomic contact and bonding. Atomically clean metallic surfaces without an oxide layer bond spontaneously. Despite its importance the oxide dispersion mechanism is not well studied. In this...

Development of a range-extended electric vehicle powertrain for an integrated energy systems research printed utility vehicle

Journal: Applied Energy

Rapid vehicle and powertrain development has become essential to for the design and implementation of vehicles that meet and exceed the fuel efficiency, cost, and performance targets expected by today’s consumer while keeping pace with reduced development cycle and more frequent product releases. Recently, advances...

Cleated Print Surface for Fused Deposition Modeling

Journal: Journal of Mechanics Engineering and Automation

FDM (fused deposition modeling) has become popular among Additive Manufacturing technologies due to its speed, geometric scalability, and low cost; however, the primitive nature of the FDM build surface fundamentally limits the utility of FDM in terms of reliability, autonomy, and material selection. Currently,...

Long-Term Lithium-Ion Battery Performance Improvement via Ultraviolet Light Treatment of the Graphite Anode

Journal: Journal of the Electrochemical Society

Effects of ultraviolet (UV) light on dried graphite anodes were investigated in terms of the cycle life of lithium ion batteries. The time variations for the UV treatment were 0 (no treatment), 20, 40, and 60 minutes. UV-light-treated graphite anodes were assembled for cycle life tests in pouch cells with pristine...

Electron beam curing of composite positive electrode for Li-ion battery

Journal: Journal of the Electrochemical Society

Electron beam cured acrylated polyurethanes have been successfully used as novel binders for positive electrodes for Li-ion batteries. The cross-linked polymer after electron beam curing coheres active materials and carbon black together onto Al foil. Electrochemical tests demonstrate the stability of the polymer...

Additive Manufacturing Integrated Energy - Enabling Innovative Solutions for Buildings of the Future

Journal: Journal of Solar Energy Engineering

The AMIE (Additive Manufacturing Integrated Energy) demonstration utilized 3D printing as an enabling technology in the pursuit of construction methods that use less material, create less waste, and require less energy to build and operate. It was developed by Oak Ridge National Laboratory (ORNL) in collaboration...