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A high-rate and long cycle life aqueous electrolyte battery for grid-scale energy storage

Author

Listed:
  • Mauro Pasta

    (Stanford University)

  • Colin D. Wessells

    (Stanford University)

  • Robert A. Huggins

    (Stanford University)

  • Yi Cui

    (Stanford University
    SLAC National Accelerator Laboratory, Stanford Institute for Materials and Energy Sciences)

Abstract

New types of energy storage are needed in conjunction with the deployment of solar, wind and other volatile renewable energy sources and their integration with the electric grid. No existing energy storage technology can economically provide the power, cycle life and energy efficiency needed to respond to the costly short-term transients that arise from renewables and other aspects of grid operation. Here we demonstrate a new type of safe, fast, inexpensive, long-life aqueous electrolyte battery, which relies on the insertion of potassium ions into a copper hexacyanoferrate cathode and a novel activated carbon/polypyrrole hybrid anode. The cathode reacts rapidly with very little hysteresis. The hybrid anode uses an electrochemically active additive to tune its potential. This high-rate, high-efficiency cell has a 95% round-trip energy efficiency when cycled at a 5C rate, and a 79% energy efficiency at 50C. It also has zero-capacity loss after 1,000 deep-discharge cycles.

Suggested Citation

  • Mauro Pasta & Colin D. Wessells & Robert A. Huggins & Yi Cui, 2012. "A high-rate and long cycle life aqueous electrolyte battery for grid-scale energy storage," Nature Communications, Nature, vol. 3(1), pages 1-7, January.
    • Handle: RePEc:nat:natcom:v:3:y:2012:i:1:d:10.1038_ncomms2139
    DOI: 10.1038/ncomms2139
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    14. Xiao Zhu & Tuan K. A. Hoang & Pu Chen, 2017. "Novel Carbon Materials in the Cathode Formulation for High Rate Rechargeable Hybrid Aqueous Batteries," Energies, MDPI, vol. 10(11), pages 1-17, November.
    15. Li, Yong & Yang, Jie & Song, Jian, 2016. "Nano-energy system coupling model and failure characterization of lithium ion battery electrode in electric energy vehicles," Renewable and Sustainable Energy Reviews, Elsevier, vol. 54(C), pages 1250-1261.
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