| Autor: |
Whitacre, J. F.1,2 whitacre@andrew.cmu.edu, Shanbhag, S.2, Mohamed, A.1, Polonsky, A.2, Carlisle, K.2, Gulakowski, J.2, Wu, W.1, Smith, C.2, Cooney, L.2, Blackwood, D.2, Dandrea, J. C.2, Truchot, C.2 |
| Předmět: |
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| Zdroj: |
Energy Technology. Jan2015, Vol. 3 Issue 1, p20-31. 12p. |
| Abstrakt: |
A composite anode comprising blended NASICON-structured NaTi2(PO4)3 and activated carbon has been implemented in an aqueous electrolyte electrochemical energy storage device. A simple solid-state synthetic route based on low-cost precursors was used to produce the NaTi2(PO4)3, and thick (>1 mm) freestanding electrodes were fabricated with a range of activated carbon mass fractions. Electrochemical analyses showed the efficacy and stability of this composite anode combination in a functional paradigm where both Na+ and Li+ cations can participate in the charge storage reactions. Use of this composite anode in concert with a λ-MnO2-based cathode results in an energy storage device that is low cost, robust, and of sufficient energy density to be implemented in stationary applications. Data from large-format units that contain many cells in series indicate that string-level self-balancing occurs, an effect that can be relied on for making cycle-stable high-voltage strings of cells. [ABSTRACT FROM AUTHOR] |
| Databáze: |
GreenFILE |
| Externí odkaz: |
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