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    SMART TESTSOLUTIONS presents cell voltage monitoring for electrolyzers at Hydrogen + Fuel Cell Europe in Hanover, Germany

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    GE Renewable Energy connects the world’s most powerful hydro unit to the grid in Wudongde, China

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    Water-Based Zinc Batteries Are Safer And More Sustainable

    Korea Makes Carbon Porous Electrode For H2 Creation Possible

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    North Americas Hydrogen Projects Threaten European Lead

    Clean Energy Groups Slam Votes For The Solar Tariff Repeal

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    Modine Launches New EVantage Fuel Cell Stack Cooling Package for Commercial Zero-Emission Vehicles

    EKPO Secures Large-scale Contract For Fuel Cell Bipolar Plates From Global Car Manufacturer

    EKPO Secures Large-scale Contract For Fuel Cell Bipolar Plates From Global Car Manufacturer

    SMART TESTSOLUTIONS presents cell voltage monitoring for electrolyzers at Hydrogen + Fuel Cell Europe in Hanover, Germany

    SMART TESTSOLUTIONS presents cell voltage monitoring for electrolyzers at Hydrogen + Fuel Cell Europe in Hanover, Germany

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    Refiners Should Not Be Making Above Normal Profits- Biden

    Refiners Should Not Be Making Above Normal Profits- Biden

    Cluster of Businesses Want The EU To Improve Energy Security

    Cluster of Businesses Want The EU To Improve Energy Security

    Enel plans to expand power distribution business into US

    In A Move To Avert Blackouts Australia Halts Power Market

    Central American Development Bank commits $800 million toward the fuel relief effort

    Central American Development Bank commits $800 million toward the fuel relief effort

    A New 500-MW Supercritical Coal-Fired Power Plant Going into Operationa in Philippines

    EU Reduces Plans of Fossil-Fueled Electricity By One-Third

    BP to invest up to £18 billion in UK energy system by 2030

    Array Technologies increased revenue 35% to US$872.7 million in 2020

    Array Technologies increased revenue 35% to US$872.7 million in 2020

    Nordex Group: half-year sales rise to EUR 2 billion, earnings impacted by COVID-19

    Nordex Group: half-year sales rise to EUR 2 billion, earnings impacted by COVID-19

    GE Renewable Energy connects the world's most powerful hydro unit to the grid in Wudongde, China

    GE Renewable Energy connects the world’s most powerful hydro unit to the grid in Wudongde, China

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    Toyota granted Zero Emission CARB Executive Order for heavy-duty fuel cell electric powertrain kit

    Toyota granted Zero Emission CARB Executive Order for heavy-duty fuel cell electric powertrain kit

    SFC Energy AG Strengthens North American Business and Opens Competence Center for Hydrogen Fuel Cells in Canada

    SFC Energy AG Strengthens North American Business and Opens Competence Center for Hydrogen Fuel Cells in Canada

    TECO 2030 Starts Manual Production of Fuel Cell Stacks

    TECO 2030 Starts Manual Production of Fuel Cell Stacks

    Sustainable energy: industry get-together at hy-fcell

    India achieved a solar share of 10.69 percent of installed power capacity

    Altea Green Power inks deal with Aer Soleir to build 300MW projects in Italy

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    TotalEnergies starts up its fourth solar power plant in Japan

    ACCIONA Wind Energy

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    Fermi Energia Selects GE Hitachi Nuclear Energy BWRX-300 Small Modular Reactor for Deployment in Estonia

    Fermi Energia Selects GE Hitachi Nuclear Energy BWRX-300 Small Modular Reactor for Deployment in Estonia

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Water-Based Zinc Batteries Are Safer And More Sustainable

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The world is looking to have cheap as well as powerful batteries that can go on to store sustainably developed electricity via wind or sunlight so that one can use it whenever it is needed, be it dark outside or no wind blowing at all. The most common batteries that go on to power our smartphones as well as electric cars happen to be lithium-ion batteries. They are pretty expensive since, throughout the world, demand is soaring by the day, and they also happen to be highly flammable.

Water-based zinc batteries promise to be a better alternative to these batteries. Led by ETH Zurich, an International team of researchers has developed a strategy that makes key advancements in the development of such zinc batteries, thereby making them more powerful, safer, and environmentally friendlier.

There happen to be a number of advantages to zinc batteries: they are abundant, have a mature recycling infrastructure, are cheap, and can also store a lot of electricity. Besides, zinc batteries don’t always make use of highly flammable organic solvents like the electrolyte fluid since they can also be made by using water-based electrolytes.

If at all there were no challenges that the engineers must face while developing such batteries, as when zinc is charged at high voltage, the water in the electrolyte fluid goes on to react on one of the electrodes in order to form hydrogen gas. As this takes place, the electrolyte fluid goes on to dwindle, and the performance of the battery decreases. The reaction causes excess pressure to build up in the battery, is dangerous. The formation of spikey deposits of zinc in the process of charging the battery, commonly known as dendrites, is another issue which can pierce into the battery and, in the worst scenario, even go on to cause a short circuit.

Engineers over the years, have gone on to pursue the strategy of enriching aqueous liquid electrolytes with salts so as to keep the content of the water as low as it can be. However, there happen to be disadvantages associated with this: it goes on to make the fuid viscous, thereby slowing the charging as well as discharging processes to a considerable extent. Apart from this, many of the salts that are used on it contain fluorine, thereby making them toxic and also harmful to the environment.

Professor of Eletrochemical Systems at ETH Zurich, Maria Lukatskaya, has gone on to join forces with colleagues across various research institutions spread in the US as well as Switzerland in order to search systematically for the ideal salt mixes for water-based zinc-ion batteries. By using these experiments supported by computer simulations, the scientists have been able to reveal the fact that the ideal salt mixture isn’t what was initially assumed to be the highest but a considerably lower one on each salt’s positive ion.

The researchers did not make use of any environmentally harmful salts to make improvements and opted for friendly salts such as acetates. With their ideal concentration, they were able to minimise the depletion of electrolyte and also prevent zinc dendrites just as well as what the other scientists previously did with high concentrations of salts, said one of the doctoral students, Dario Gomez Vazquez, at the Lukatskaya group. He also happens to be the leader of the study. He adds that with their study, the batteries can be charged and discharged more rapidly.

Thus far, the ETH researchers have gone on to test the new battery strategy at a pretty small lab scale. The next call for them is going to be to elevate their approach and see if all of it can be transpired into larger batteries. These might ideally be used as storage units one day in the power grid so as to compensate for the fluctuations taking place, for example, in the basement of the single-family homes so as to make way for solar power produced during the day, which could be of use in the evening.

There are, however, still challenges that need to be overcome before zinc batteries are ready for the market. As per Professor Lukatskaya, the batteries have two electrodes, the anode and the cathode, and, of course, the electrolyte fluid between the two. They showed that by tuning the electrolyte composition, efficient zinc anode charging can be made possible. Performance cathode materials will have to be optimised, going forward in order to produce efficient as well as durable zinc batteries.

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