Liquid electricity

presentation on liquid electricity and vanadium redox battery

1. Liquid Electricity Snehdeep Kunwar 160356 EE-S4 1

2. CONTENTS INTRODUCTION CONCEPTS OF LIQUID ELECTRICITY HISTORY OF VANADIUM REDOX BATTERY OPERATION ADVANTAGES APPLICATIONS DRAWBACKS FUTURE ASPECTS CONCLUSION REFERENCE 2

3. INTRODUCTION Transportation is one of the fastest growing energy demand sectors , having a close association with oil. Globally about 98% of the worlds transportation runs on fuel made from oil. Electric vehicles are stated as the vehicles of the future , a number pf factors are holding people back from switching over from regular vehicles right now. Researchers from MIT have developed a new battery that is said to solve these problems. We just need to swap the electrolytes in the battery. The discharged liquid is also reusable: it can be recharged and then pumped into other vehicle, which makes it an eco-friendly solution. 3

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6. HISTORY OF VRB Initial work on the Vanadium Redox Battery (VRB) at UNSW began in 1984. First patent of VRB by Maria skyllas – kazacos & coworkers in 1986 . 200 kW / 800 kWh installed by Mitsubishi Chemicals (1996) at Kashima- Kita Electric Power, Japan for load-levelling. 6

7. CONCEPT OF LIQUID ELECTRICITY The Dutch Innovation Network has come up with the idea of just pumping up the spent electrolyte out & pump in freshly charged electrolyte – LITERALLY LIQUID ELECTRICITY . “POWER NETWORK” basic principle involved with the refuelling of electric cars is the recharging of the spent electrolyte in the battery via an external media , that has been consuming a lot time . This would take little more time than filling up with fossil fuel & the spent electrolyte can be recharged & resold “liquid electricity ” , takes the form of a VANADIUM REDOX BATTERY –technology pioneered by the University of NSW. “PETER OEI” Says-”With an electrolyte solution the consumer delivers the spent electrolyte back to the filling station where it is recharged by the local power generation or the national 7

8. POSITIVE ELECTROLYTE TANK NEGATIVE ELECTROLYTE TANK DC / AC ⃡     PUMP PUMP GENERATOR LOAD VANADIUM REDOX BATTERY 8

9. OPERATIONS OF VRB VRB consists of an assembly of power cells. T wo electrolytes are separated by a proton exchanger. P ositive half cells contains & . N egative half cells contains & . B oth half cells are connected to storage tanks & pumps VRB is being charged, the ions in the positive half-cell are ions. T he negative half-cell electrons are introduced converting the ions into . D uring discharge this process is reversed and results in a typical open circuit voltage of 1.41 v at 25 . To charge the battery ,we just need to reverse the process by connecting an external source.   9

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12. ADVANTAGES Liquid electricity provides us with a chance of leaving back the technology which emit carbon dioxide , fine dust & noise. It provides farmers a mean to supplement their income by providing them a chance to utilize the space in their properties to build wind turbines , solar collectors or biomass plants. This would nearly end the use of food plants such as corn & sugarcane for the production of ethanol. We currently spend huge amounts of time and energy getting oil from various locations , refining and transporting them to local fuel stations. This stresses the need of an alternate technique to power our engines. 13

13. APPLICATIONS Helps photon farmers using wind, solar or waste biomass to make clean electricity to recharge electrolyte and sell it at filling stations. To make Small portable batteries for Electric vehicles that require ‘instant recharge’ through working fluid replacement  Applications where the batteries must be stored for long periods of time with little maintenance while maintaining a ready state. 14

14. DRAWBACKS Although it sounds like a great idea for electric car transport - filling up with “recharged electrolyte” but the cost effectiveness is under question regarding the energy needed to transport the electrolyte from suburban filling stations back to the power stations for recharging. An effective method for handling and storage of electrolyte also has to be found; otherwise a lot of effort would certainly go down the drain in terms of wastage of the effort of charging. Inability for the national power networks to meet the demand if everyone were to switch to this solution. 15

15. FUTURE ASPECTS Dutch government with the help of their innovation network is working on a solution in Utrecht city. Efforts are being made to adjust the cost of recharging of electrolyte. Transportation is another big aspects they have to look upon. Scientist from US are developing a liquid consisting of carbon ,hydrogen & nitrogen to develop a storage liquid which can store 1.10% of solar energy as compared to solar panel. As compared to solar panels which stores 0.01% of solar energy. It is not much increase but still some progress . 16

16. FUTURE VRB REFUELLING STATION 17

17. CONCLUSION Liquid electricity provides us a chance to leave behind the technology involving the emission of fine dust, carbon dioxide and noise. This project has very bright chances regarding being technically and economically feasible someday. Let’s hope the future automobile will run on electricity and not gasoline and we get everybody to convert to Electric Vehicles, which is better for our planet. 18

18. REFERENCE UNSW Site on Vanadium batteries Contents from Wikipedia 2012 techdirections magazine UNSW Site on Vanadium batteries Comprehensive Vanadium report on uses and applications. 19

19. THANK YOU 20