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Superior, High-Performance Electrode For 'Paintable' Lithium-Ion Batteries

Detailed Technology Description

Existing Lithium-ion battery electrodes demonstrate very low stable charge capacity either at high current densities or at half weight, making them unsuitable for high-power applications. Researchers at KSU have developed a high-performance ‘paintable’ Lithium-ion battery anode comprising of SiAlCN-Carbon Nanotube (CNT) composite that is spray-painted on a metallic or ceramic substrate (e.g. copper). The electrode demonstrates extremely high stable charge capacity per weight and per area of electrode as well as at high current densities, when used in a Lithium-ion battery.The key aspect of this electrode is that it demonstrates significantly higher stable charge capacity than existing graphite electrodes, even after the first cycle loss of Lithium. In addition, the ‘paintable’ nature of these electrodes on a variety of substrates allows for the creation of superior, high-performance Lithium-ion batteries that could possibly be easily integrated into common electronics. (See supporting table and graph below; for publication click here)Material1st Cycle Charge, mAh g-1Binder and Conductive AgentsCapacity at Max. Current Density Tested, mAh g-1Max. Number of Cycles TestedSi-Al-C-N/CNT (our technology)577No400 (10000 mA g-1)1100MWCNT162No98 (10000)1100Si-Al-C-N96No50 (10000)1100Units: Capacity per weight of the electrode Units: Capacity per area of the electrodeAdvantages and Technical Merits:First cycle charge capacity of 577 mAhg-1, tested for 1100 cycles.A stable charge capacity of about 400 mAhg-1 at a maximum current density of 10 Ag-1, and about 500 mAhg-1 at a current density of about 100 mAg-1.A stable long term symmetric cyclability with a high charge capacity of 350 mAg-1 for 1000 cycles, at 1600 mAg-1.‘Paintable’ nature allows for production of electrodes on versatile substrates and possibly easy integration.Shows extreme C-rate capability as binder-free and conducting agent-free Lithium-ion battery electrode.Potential Applications and Commercial Opportunities:Powering electronic devices and appliances.Battery-powered vehicles and aerospace applications.Energy generation and storage applications (e.g. spray-on solar cells).Patent Status:U.S. patent #9,908,905 issued on March 6, 2018.Kansas State University Research Foundation seeks to have discussions with companies that are interested in licensing and/or research collaborations.Interested parties should contact:Kansas State University Institute for Commercialization (KSU-IC)2005 Research Park Circle Manhattan, KS 66502Tel: 785-532-3900 Fax: 785-532-3909E-Mail: ic@k-state.edu

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Country/Region

USA