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Title: Mesoporous nanocrystalline film architecture for capacitive storage devices

A mesoporous, nanocrystalline, metal oxide construct particularly suited for capacitive energy storage that has an architecture with short diffusion path lengths and large surface areas and a method for production are provided. Energy density is substantially increased without compromising the capacitive charge storage kinetics and electrode demonstrates long term cycling stability. Charge storage devices with electrodes using the construct can use three different charge storage mechanisms immersed in an electrolyte: (1) cations can be stored in a thin double layer at the electrode/electrolyte interface (non-faradaic mechanism); (2) cations can interact with the bulk of an electroactive material which then undergoes a redox reaction or phase change, as in conventional batteries (faradaic mechanism); or (3) cations can electrochemically adsorb onto the surface of a material through charge transfer processes (faradaic mechanism).
Inventors:
; ; ; ;
Issue Date:
OSTI Identifier:
1357480
Assignee:
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA CHO
Patent Number(s):
9,653,219
Application Number:
14/173,490
Contract Number:
SC0001342
Resource Relation:
Patent File Date: 2014 Feb 05
Research Org:
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, Oakland, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 25 ENERGY STORAGE

Other works cited in this record:

Multilayer capacitor elements
patent, November 1987

Ultrathin, conformal polymer coatings as separators at nanostructured metal oxides used for energy storage
patent, December 2006

Mesoporous nanocrystalline film architecture for capacitive storage devices
patent, March 2014

Thermally Stable Crystalline Mesoporous Metal Oxides With Substantially Uniform Pores
patent-application, February 2011

Superior Electrode Performance of Nanostructured Mesoporous TiO2 (Anatase) through Efficient Hierarchical Mixed Conducting Networks
journal, August 2007
  • Guo, Y.-G.; Hu, Y.-S.; Sigle, W.
  • Advanced Materials, Vol. 19, Issue 16, p. 2087-2091
  • DOI: 10.1002/adma.200602828

Highly Organized Mesoporous TiO2 Films with Controlled Crystallinity: A Li-Insertion Study
journal, January 2007
  • Fattakhova-Rohlfing, D.; Wark, M.; Brezesinski, T.
  • Advanced Functional Materials, Vol. 17, Issue 1, p. 123-132
  • DOI: 10.1002/adfm.200600425

Electrochemical performance of mesoporous TiO2 anatase
journal, January 2008

Photocapacitance of Nanocrystalline Oxide Semiconductor Films:  Band-Edge Movement in Mesoporous TiO2 Electrodes during UV Illumination
journal, May 1996
  • Hagfeldt, Anders; Björkstén, Ulrika; Grätzel, Michael
  • The Journal of Physical Chemistry, Vol. 100, Issue 20, p. 8045-8048
  • DOI: 10.1021/jp9518567

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