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In situ analysis of LiFePO4 batteries: Signal extraction by multivariate analysis

Powder Diffraction

Rodriguez, Marko A.; Van Benthem, Mark V.; Ingersoll, David I.; Vogel, Sven C.; Reiche, Helmut M.

The electrochemical reaction behavior of a commercial Li-ion battery (FePO4-based cathode, graphite-based anode) has been measured via in situ neutron diffraction. A multivariate analysis was successfully applied to the neutron diffraction data set facilitating in the determination of Li bearing phases participating in the electrochemical reaction in both the anode and cathode as a function of state-of-charge (SOC). The analysis resulted in quantified phase fraction values for FePO4 and FePO4 cathode compounds as well as the identification of staging behavior of Li6, Li12, Li24, and graphite phases in the anode. An additional Li-graphite phase has also been tentatively identified during electrochemical cycling as LiC48 at conditions of ∼5% to 15% SOC. © 2010 International Centre for Diffraction Data.

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TYPE Conference YEAR 2010
ScopusOSTI

Development and testing of an air breathing, membrane separated, enzyme anode fuel cell for glucose fuels

ACS Division of Fuel Chemistry, Preprints

Apblett, Christopher A.; Ingersoll, David I.; Roberts, Greg

In light of difficulties in realizing a carbohydrate fuel cell that can run on animal or plant carbohydrates, a study was carried out to fabricate a membrane separated, platinum cathode, enzyme anode fuel cell, and test it under both quiescent and flow through conditions. Mediator loss to the flowing solution was the largest contributor to power loss. Use of the phenazine derivative mediators offered decent open circuit potentials for half cell and full cell performance, but suffered from quick loss to the solution which hampered long term operation. A means to stabilize the phenazine molecules to the electrode would need to be developed to extend the lifetime of the cell beyond its current level of a few hours. This is an abstract of a paper presented ACS Fuel Chemistry Meeting (Washington, DC Fall 2005).

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TYPE Conference YEAR 2005
ScopusOSTI

Bio micro fuel cell grand challenge final report

Apblett, Christopher A.; Novak, James L.; Hudgens, James J.; Podgorski, Jason R.; Brozik, Susan M.; Flemming, Jeb H.; Ingersoll, David I.; Eisenbies, Stephen E.; Shul, Randy J.; Cornelius, Christopher J.; Fujimoto, Cy F.; Schubert, William K.; Hickner, Michael A.; Volponi, Joanne V.; Kelley, Michael J.; Zavadil, Kevin R.; Staiger, Chad S.; Dolan, Patricia L.; Harper, Jason C.; Doughty, Daniel H.; Casalnuovo, Stephen A.; Kelley, John B.; Simmons, Blake S.; Borek, Theodore T.; Meserole, Stephen M.; Alam, Todd M.; Cherry, Brian B.; Roberts, Greg

Abstract not provided.

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TYPE SAND Report YEAR 2005
OSTIDOI
Results 51–75 of 83
Results 51–75 of 83