Summary
- Profile Type
- Technology offer
- POD Reference
- TOSK20230807019
- Term of Validity
- 7 August 2023 - 6 August 2025
- Company's Country
- Slovakia
- Type of partnership
- Commercial agreement with technical assistance
- Investment agreement
- Targeted Countries
- All countries
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General information
- Short Summary
-
A team of inventors from an established Slovak scientific and research institute has developed a new innovative technology consisting in the possibility of fast charging and discharging of a Li-ion battery with a silicon/graphite anode covered with a ZnO layer without a significant reduction in battery capacity.
The preferred cooperation type is commercial agreement or investment agreement. - Full Description
-
When charging and discharging a Li-ion battery with a silicon-graphite-based anode and a liquid electrolyte, a thin passivation layer is formed on the negative electrode (anode), called "solid-electrolyte-interface" in the technical literature layer, SEI layer). This layer is formed as a result of the decomposition of the electrolyte and consists of lithium carbonate (LiCO3), lithium fluoride (LiF) and other organometallic compounds formed during the decomposition of the electrolyte. The SEI layer is very thin, on the order of several nm. It stabilizes the surface of the anode and ensures the transport of Li ions, blocks the transfer of electrons and enables the electrochemical reactions necessary for battery operation. On the other hand, it turns out that this layer is an obstacle for lithium ions, especially during fast charging and discharging. Ions cannot move into and out of the anode volume fast enough, causing battery capacity to drop.
Currently, a decrease in the capacity of a Li-ion battery with a silicon/graphite anode has been observed during rapid charging and discharging.
A team of inventors from an established Slovak scientific and research institutions has developed managed to substantially eliminate the aforementioned shortcomings by modifying the surface of the Li-ion battery anode with a thin layer of zinc oxide (ZnO) applied atomically. Anode based on graphite and silicon is covered with a very thin layer of ZnO, which layer is 0.5-5 nm thick. The ZnO layer limits the formation of a passivation layer at the interface between the anode and the liquid electrolyte and increases the battery capacity several times during fast charging and discharging.
The institution is looking for a partner to cooperate with via commercial agreement or investment agreement. - Advantages and Innovations
- The possibility of increasing the capacity of a Li-ion battery with a silicon/graphite anode covered with a ZnO layer during fast charging and discharging.
- Stage of Development
- Lab tested
- Sustainable Development Goals
- Goal 9: Industry, Innovation and Infrastructure
- IPR status
- IPR applied but not yet granted
- IPR notes
- Pending patent: priority patent application (PP 50005-2023)
Partner Sought
- Expected Role of a Partner
-
The subject invention can be used in various areas, specifically in the area of the production of negative electrodes - anodes for rechargeable Li-ion batteries, especially in the automotive industry. A Li-ion battery with a silicon/graphite anode covered with a ZnO layer can be used for electric vehicles.
The institution is looking for a partner to cooperate with via commercial agreement (a partner for licensing of this technology is sought) or investment agreement (an investor to further develop this technology is sought or a partner to sell this technology to is sought). - Type and Size of Partner
- Big company
- SME 50 - 249
- Type of partnership
- Commercial agreement with technical assistance
- Investment agreement
Dissemination
- Technology keywords
- 02009012 - Automotive engineering
- 02009014 - Automotive electrical and electronics
- 02009026 - Energy supply system
- 04007001 - Energy management
- Market keywords
- 03004003 - Other electronics related equipment
- 08001020 - Electronic chemicals
- 06008 - Energy Storage
- 06010003 - Energy for Industry
- 03001009 - Other electronics related (including keyboards)
- Targeted countries
- All countries