Very High Energy Density Silicide-Air Primary Batteries
- 技術優勢
- High gravimetric and volumetric energy density product (3-10x higher than Zn-air or Al-air technologies)High conductivity to replace carbon blackHigh operating voltage (with a theoretical maximum full cell voltage up to 1.9-2.5 V)Potential for scalable manufacturing with low cost and easy assembly by using commercially available silicide powder materialsMild self-discharge characteristic in KOH electrolyteHigh earth abundancePotential environmental benignity
- 技術應用
- Primary metal-air battery systemMobile power applicationsElectric vehicleEnergy storage for renewable energy production
- 詳細技術說明
- UCLA researchers proposed and developed a new class of silicide based anode materials used in metal-air primary batteries that can exhibit excellent electrochemical performance with unparalleled capacity in both thin film and bulk power pellet form. In particular, one silicide material offers a higher anode capacity than Zn-, Al-, or Si-based anodes on both the gravimetric and volumetric scale. Its product of gravimetric and volumetric density is also 3-10 times better than that of Zn-air or Al-air technologies.
- *Abstract
-
UCLA researchers in the Department of Materials Science and Engineering, and Department of Chemistry and Biochemistry have developed a new family of silicide based anode materials for high energy density metal-air primary batteries.
- *IP Issue Date
- Jun 9, 2016
- *Principal Investigation
-
Name: Xiangfeng Duan
Department:
Name: Yu Huang
Department:
Name: Hua Zhang
Department:
Name: Xing Zhong
Department:
- 申請號碼
- 20160164084
- 其他
-
State Of Development
The UCLA researchers have manufactured and developed experimentally a proof-of-concept battery product consisting of the silicide anode, an air electrode cathode, and gel electrolyte. The pellet form silicide anodes are manufactured from commercially available silicide powder materials. A full discharge profile using 1 mA discharge current shows that a flat voltage plateau can be maintained at ~1.1 V. A capacity of ~1,800 mAh/g is experimentally achieved, which is close to 60% of the theoretical capacity based on the anode reaction.
Background
High density electrochemical energy storage is of central importance for mobile power applications. The relatively low energy density and high cost associated with the current battery and supercapacitor technologies have been the main hurdle to its more widespread application. To realize the potential of high energy density offered by the emerging metal-air primary batteries, an optimal anode material is required to have high energy density, high earth abundance, environmental friendliness, conductivity, and high operation voltage.
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Tech ID/UC Case
29184/2014-073-0
Related Cases
2014-073-0
- 國家/地區
- 美國
