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).
- Research Organization:
- Univ. of California, Oakland, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- SC0001342
- Assignee:
- THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
- Patent Number(s):
- 9,653,219
- Application Number:
- 14/173,490
- OSTI ID:
- 1357480
- Resource Relation:
- Patent File Date: 2014 Feb 05
- Country of Publication:
- United States
- Language:
- English
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