Publications

Long-term strategic planning of inter-city fast charging infrastructure for battery electric vehicles

Journal: Transportation Research Part E: Logistics and Transportation Review

This study introduces a multistage chance-constrained stochastic model for strategic planning of battery electric vehicle (BEV) inter-city fast charging infrastructure. A mixed integer programming model is developed to determine where and when charging stations are opened, and how many chargers are required for...

A method for determining the optimal delivered hydrogen pressure for fuel cell electric vehicles

Journal: Applied Energy

Fuel cell electric vehicles (FCEVs) are considered an important part of a portfolio of options to address challenges in the transportation sector, including energy security and pollution reduction. The market success of FCEVs depends on standardization of key vehicle and infrastructure parameters, including the...

Sustainable Transportation Program FY 2010 Annual Report

Journal:

Introduction

Oak Ridge National Laboratory leverages its state of the art facilities and its renowned engineering and scientific staff to “attack the fundamental science challenges posed by DOE’s missions and carrying out the translational work required to accelerate the delivery of solutions to the marketplace.”1...

Analyzing the impacts of a biogas-to-electricity purchase incentive on electric vehicle deployment with the MA3T vehicle choice model

Journal: Oak Ridge National Laboratory Report

In 2014, the EPA approved a biogas-to-electricity pathway under the Renewable Fuel Standard (RFS). However, no specific applications for this pathway have been approved to date (EPA, 2017). This analysis helps understand the impact of the pathway by representing the biogas-to-electricity pathway as a point of...

Market-driven automotive industry compliance with fuel economy and greenhouse gas standards: Analysis based on consumer choice

Journal: Energy Policy

This study explored factors that affect market-driven compliance with both Corporate Average Fuel Economy (CAFE) and greenhouse gas (GHG) standards (together called the National Program) in the United States for phase I 2012–2016 and phase II 2017–2025. We considered a consumer-choice-based simulation approach,...

Historical Review of the Transportation Analysis Fact of the Week, 1996-2017

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The Department of Energy’s Vehicle Technologies Office (VTO) hosts a transportation analysis fact of the week on its webpage. ORNL has produced the fact of the week for VTO since 2001. This report examines the themes of the first 1,000 published facts, highlighting analytical trends. The most popular themes have...

Probing Multiscale Transport and Inhomogeneity in a Lithium-Ion Pouch Cell Using In Situ Neutron Methods

Journal: ACS Energy Letters

We demonstrate the lithiation process in graphitic anodes using in situ neutron radiography and diffraction in a single-layer pouch cell. The variation in neutron absorption contrast in graphite shows a direct correlation between the degree of lithiation and the discharge potential. The experimental neutron...

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...

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...

Sustainable Transportation Program 2016 Annual Report

Journal:

The efficiency and security of the transportation system affect us all—from the time and energy spent on our daily commutes to the availability of goods in our local stores. Also impacted are our pocketbooks, both as individuals and as a nation.

Transportation accounts for about 70% of national petroleum use...

Modeling and validation of single-chamber microbial fuel cell cathode biofilm growth and response to oxidant gas composition

Journal: Journal of Power Sources

This work describes experiments and computational simulations to analyze single-chamber, air-cathode microbial fuel cell (MFC) performance and cathodic limitations in terms of current generation, power output, mass transport, biomass competition, and biofilm growth. Steady-state and transient cathode models were...

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...

A Survey on the Coordination of Connected and Automated Vehicles at Intersections and Merging at Highway On-Ramps

Journal: IEEE Transactions on Intelligent Transportation Systems

Connected and automated vehicles (CAVs) have the potential to improve safety by reducing and mitigating traffic accidents. They can also provide opportunities to reduce transportation energy consumption and emissions by improving traffic flow. Vehicle communication with traffic structures and traffic lights can...

Promotional Effects of In on Non-Oxidative Methane Transformation over Mo-ZSM-5

Journal: Catalysis Letters

We present a new class of catalysts, InMo-ZSM-5, which can be prepared by indium impregnation of Mo-ZSM-5. The incorporation of indium dramatically decreases coke formation during methane dehydroaromatization. The benzene and C2 hydrocarbons selectivity among total hydrocarbons over InMo-ZSM-5 remains comparable to...

A Duality Framework for Stochastic Optimal Control of Complex Systems

Journal: IEEE Transactions on Automatic Control

Abstract:

We address the problem of minimizing the long-run expected average cost of a complex system consisting of interactive subsystems. We formulate a multiobjective optimization problem of the one-stage expected costs of the subsystems and provide a duality framework to prove that the control policy...

Catalytic Conversion of Biomass Derived Ethanol to Liquid Hydrocarbon Blend-Stock: Effect of Light Gas Recirculation

Journal: Energy Fuels

We describe a light gas recirculation (LGR) method to increase the liquid hydrocarbon yield with a reduced aromatic content from catalytic conversion of ethanol to hydrocarbons. The previous liquid hydrocarbon yield is ∼40% from one-pass ethanol conversion over the V-ZSM-5 catalyst at 350 °C and atmospheric...

Discovery of true electrochemical reactions for ultrahigh catalyst mass activity in water splitting

Journal: Science Advances

Better understanding of true electrochemical reaction behaviors in electrochemical energy devices has long been desired. It has been assumed so far that the reactions occur across the entire catalyst layer (CL), which is designed and fabricated uniformly with catalysts, conductors of protons and electrons, and...

Sustainable Transportation Program 2015 Annual Report

Journal:

Oak Ridge National Laboratory’s (ORNL’s) Sustainable Transportation Program (STP) brings together science and technology experts from across scientific disciplines to partner with government and industry in addressing national transportation challenges. STP develops knowledge and technologies that accelerate the...

Sequence data for Clostridium autoethanogenum using three generations of sequencing technologies

Journal: Scientific Data

During the past decade, DNA sequencing output has been mostly dominated by the second generation sequencing platforms which are characterized by low cost, high throughput and shorter read lengths for example, Illumina. The emergence and development of so called third generation sequencing platforms such as PacBio...

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