PDF Publication Title:
Text from PDF Page: 036
configuration. In a prototype designed by Postula et al. [216] each cell has a knife switch to connect the negative electrode to the positive or auxiliary electrode for discharge or charge. In a stack, these switches were grouped together for simultaneous operation. The configuration of a tri-electrode cell is an important design factor of a functioning flow system during charge due to oxygen bubble detachment and coalescence phenomena [217]. Bockelmann et al. [218] designed a three electrode rechargeable zinc-oxygen configuration with the positive electrodes for charge and discharge adjacent to one another and reported that the cell was capable of being cycled at 50 mA cm–2 for over 600 cycles with an efficiency of 54%, although dendrite formation was not accounted for. 4.3 Cell developments As reviewed, the zinc-air system possesses advantages such as a high energy density, relatively high open-circuit voltage, and low-cost materials etc., which are seen to be promising. However, challenges facing to system R & D are also equally crucial, such as the activity and stability of catalysts for oxygen evolution and reduction remains to be further explored, the common problem of zinc dendrite growth at negative electrode when charging is as one of the major challenges to the system; in addition, the effective removal of CO2 from the air feed is another task. Despite these challenges, great effort R&D efforts on the cell have been made by research groups and companies all around the world. The concept of the Zn-air RFB has its earliest precedent in a 1966 US Army project [48]. Later Fleischmann et al. [49] described a fluidised bed zinc negative electrode as a means to improve the performance of such devices. Ross and Müller developed Zn-air cells with three- dimensional copper foam negative electrodes for zinc deposition [219, 220]. The porous foam electrodes ensured smooth electrolyte flow through the cell and enabled an even deposition 36PDF Image | hybrid redox flow batteries with zinc negative electrodes
PDF Search Title:
hybrid redox flow batteries with zinc negative electrodesOriginal File Name Searched:
Zn_Negative_RFB_Review_24_Jan_2018.pdfDIY PDF Search: Google It | Yahoo | Bing
Salgenx Redox Flow Battery Technology: Power up your energy storage game with Salgenx Salt Water Battery. With its advanced technology, the flow battery provides reliable, scalable, and sustainable energy storage for utility-scale projects. Upgrade to a Salgenx flow battery today and take control of your energy future.
| CONTACT TEL: 608-238-6001 Email: greg@salgenx.com | RSS | AMP |