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Find out which trade fairs we will be exhibiting at, our latest products, and all other company and industry news.

20.01.2021 — WEVO NEWS

Redox flow batteries – new possibilities with Wevo materials

Redox flow batteries are elaborately constructed wet-cell batteries in which electrolytes, often based on vanadium, are circulated by means of pumps. The technology is seen as having great potential as a storage system for renewable energy from solar photovoltaic and wind farms or rooftop systems. However, the design of the battery stacks has been a real challenge so far as the aggressive electrolytes may cause stress on the materials.

Potting and sealing compounds from Wevo can withstand these conditions – as demonstrated by a series of tests conducted by the company in cooperation with the Fraunhofer Institute for Chemical Technology (ICT) in Pfinztal, Germany. As a result, the tested polyurethane-, epoxy- and silicone-based Wevo resins and adhesives permit the battery stacks to be designed with greater freedom and make an important contribution toward the technology becoming fit for mass application. At the “2021 International Flow Battery Forum”, WEVO-CHEMIE GmbH presented the results in detail.

DETAIL

The increasing use of renewables means that more and more electricity being generated – whether by large wind and solar farms or by small and medium-sized privately owned PV installations – has to be temporarily stored decentralized. Since the lithium-ion batteries frequently used for this purpose suffer from a number of disadvantages – among other things with respect to the storage of energy over longer periods of time or decreasing storage capacities at low temperatures or over the course of use – alternative technologies are being sought. What are known as “redox flow batteries” or wet-cell batteries are already in use.

Although their installation is more complicated as it involves manual work, they nevertheless enjoy a range of advantages over lithium-ion batteries that are particularly positive when it comes to the large-scale storage of electricity generated by wind or solar parks. On the one hand, their power and capacity can be scaled independently. What’s more, the technology is safe because the electrolyte they contain cannot catch fire or explode. A “thermal runaway”, i.e. overheating, can also be ruled out. Furthermore, the batteries usually have a long service life of 15 to 20 years and can be easily recycled later, because recovery and reprocessing of the active substances they contain are readily feasible.

WEVO PRODUCTS PASS THE ENDURANCE TEST

In cooperation with the Fraunhofer ICT, Wevo has tested the resistance of selected 2-component reaction resins based on polyurethane, epoxy and silicone in a sulphuric acid electrolyte containing vanadium. To this end, the research team stored the respective test samples for 135 days in different oxidation levels, including the especially aggressive V5+ level.

At the end of this period, the condition of the test samples was examined to determine any changes in Shore hardness, weight and surface. The latter was done with the aid of a light microscope. In addition, the transparency and colour of the electrolytes were also evaluated. The findings: neither the test samples nor the electrolytes showed any significant changes. The materials tested can therefore be considered to be resistant in the highly aggressive sulphuric acid electrolyte and vanadium in the various oxidation levels.

WEVOSIL 28001, WEVOPUR 9064 B/30 with WEVONAT 507 and WEVOPOX 32703 with WEVODUR 5009 can be used in redox flow batteries in different ways. By using them as sealing and bonding materials, they can replace the rubber and silicone seals that have been used up to now. This creates more freedom in the design of the battery stacks. In addition, they seal the bipolar membranes inside the battery securely and positively and thus protect the components and connecting bars against corrosion. In case of a complete encapsulation of the battery stack the technology is a safe option for home storage applications too, as the user is protected from the corrosive electrolyte.

Image source: © malp – stock.adobe.com

 

Press contact

Alexandra Schubert
Dr. Neidlinger Consulting
Phone: +49 711 167 617-712

Email

    10.06.2020 — MESSEN

    Wevo at the Productronica China in Shanghai

    Productronica China 2020: 03.-05.07.2020, Hall 5.1, Booth F517, Shanghai

    Wevo is again participating in Productronica China, one of the most important events in Asia since 2002. The fair showcases the entire value chain in electronics production in all industrial sectors.

    DETAIL

    We will show our tailor-made polyurethane, epoxy and silicone-based resin solutions for casting, bonding and sealing.

    30.01.2020 — MESSEN

    Wevo at the forum de l'électronique in Grenoble

    Forum de l‘électronique 2020: 11.–13.02.2020, Booth F80, Grenoble, France

    Forum de l’électronique, the event for innovations and electronic solutions, takes place in Grenoble. About 150 exhibitors present a wide range of technical and technological innovations for industry and research stakeholders. The show is highlighted by technical conferences, congresses and presentations.

    DETAIL

    In 2020, Wevo will be presenting its innovative and latest casting, bonding and sealing solutions.

    26.11.2019 — MESSEN

    Wevo at the Productronica in Munich

    Productronica 2019: 12.–15.11.2019, Hall A4, Booth 450, Munich

    The world's leading trade fair for the development and manufacture of electronics is where investment decision-makers and subject experts come together. It is where the technologies of the future and industry trends are discussed and where emerging markets are born.

    DETAIL

    Wevo has appeared at this trade fair for many years and will be presenting original casting solutions.

    27.09.2019 — MESSEN

    Wevo at the Coiltech in Pordenone

    Coiltech 2019: 25.–26.09.2019, Hall 5, Booth D20/D22, Pordenone, Italy

    Coiltech (Pordenone, Italy) is the fastest-growing international Coil Winding exhibition. The international trade fair for coils and windings follows the Coil Winding fair in Berlin, complementing it by incorporating the Italian market.

    DETAIL

    2019 will see Wevo exhibit at Coiltech in Pordenone with new polyurethane, epoxy and silicone-based resin solutions for casting, bonding and sealing.

    26.09.2019 — MESSEN

    Wevo at the Forum de l'électronique in Paris

    Forum de l'électronique 2019: 24.-26.09.2019, Hall 4, Booth B75, Paris, France

    Forum de l'électronique, the event for innovations and electronic solutions, takes place in Paris. About 200 exhibitors present a wide range of technical and technological innovations for industry and research stakeholders. The show is highlighted by technical conferences, congresses and presentations.

    DETAIL

    In 2019, Wevo will be presenting it's innovative and latest casting, bonding and sealing solutions.

    02.07.2019 — MESSEN

    Wevo at The Battery Show North America in Novi

    The Battery Show North America 2019: 10.–12.09.2019, Hall B, Booth 1901, Novi, USA

    The Battery Show Exhibition & Conference in Novi (MI) is a showcase of advanced battery technology for electric & hybrid vehicles, utility & renewable energy support, portable electronics, medical technology, military and telecommunications.

    DETAIL

    As an important partner to the automotive and energy industry, Wevo will present new polyurethane, epoxy and silicone-based resin solutions for casting, bonding and sealing.

    27.05.2019 — MESSEN

    Wevo at the PCIM Asia in Shanghai

    PCIM Asia 2019: 26.–28.06.2019, Hall 2, Booth F15, Shanghai

    Like PCIM Europe, the PCIM (short for Power Conversion, Intelligent Motion) event in China is an international meeting ground for specialists in power electronics and its applications in drive technologies and power quality.

    DETAIL

    In 2019, Wevo will be presenting it's innovative solutions for the areas of e-mobility, energy and power electronics.

    29.03.2019 — MESSEN

    Wevo at the CWIEME in Berlin

    CWIEME 2019: 21.–23.05.2019, Hall 4_2, Booth F26, Berlin

    Following 23+ years of success, CWIEME continues to be the world leading exhibition for coil, electric motor, transformer and generator manufacturing technologies.

    DETAIL

    Wevo has been an exhibitor at the CWIEME since many years and will be displaying its latest casting, bonding and sealing solutions.

    29.03.2019 — MESSEN

    Wevo at the ees Europe in Munich

    ees Europe 2019: 15.–17.05.2019, Hall C1, Booth 518, Munich

    The ees Europe is the largest and most-visited exhibition for batteries and energy storage systems in Europe and one of the most important global energy storage exhibitions.

    DETAIL

    As an important partner to the automotive and energy industry, Wevo is going to be the first time an exhibitor at the ees Europe.

    29.03.2019 — MESSEN

    Wevo at the PCIM Europe in Nuremberg

    PCIM Europe 2019: 07.–09.05.2019, Hall 6, Booth 242, Nuremberg

    At the PCIM Europe international exhibitors inform visitors about the newest products, trends and developments in the power electronics industry.

    DETAIL

    PCIM is the forum for technologies for the whole value chain of the power electronics industry, from the components to the intelligent system.

    In 2019, Wevo will be presenting innovative solutions for the areas of e-mobility, energy and power electronics, to name a few.

    29.03.2019 — MESSEN

    Wevo at The Battery Show Europe in Stuttgart

    The Battery Show Europe 2019: 07.–09.05.2019, Hall 1, Booth 734, Stuttgart

    The Battery Show is Europe’s largest trade fair for advanced battery technology.

    DETAIL

    More than 400 manufacturers and service providers from across the supply chain will display thousands of design, production and manufacturing solutions. In 2019, the expo and conference is moving to Stuttgart, one of the centres in the German automotive industry.

    As an important partner to the automotive and energy industry, Wevo will play an integral part at the fair, presenting new polyurethane, epoxy and silicone-based resin solutions for casting, bonding and sealing.

    18.02.2019 — MESSEN

    Wevo at the Productronica China in Shanghai

    Productronica China 2019: 20.–22.03.2019, Hall W1, Booth 1352, Shanghai

    Wevo is again participating in Productronica China, one of the most important events in Asia since 2002. The fair showcases the entire value chain in electronics production in all industrial sectors.

    DETAIL

    We will be on show with our tailor-made polyurethane, epoxy and silicone-based resin solutions for casting, bonding and sealing.

    25.10.2018 — MESSEN

    Wevo at the Electronica in Munich

    Electronica 2018: 13.–16.11.2018, Hall A5, Booth 118, Munich.

    The leading international trade fair Electronica (Munich) and conference is the very first place to see which components, systems, applications and solutions make new developments such as smart homes and connected cars possible in the first place. Here visitors see the entire world of electronics. 

    DETAIL

    Wevo has appeared at this trade fair for many years and will be presenting tailor-made solutions for casting, bonding and sealing.  

    28.09.2018 — MESSEN

    Wevo at the Enova in Paris

    Enova 2018: 23.–24.10.2018, Hall 4, Booth D15, Paris.

    Enova, the trade fair for electronics, measurement, vision and optical technologies, takes place in Paris. About 500 exhibitors present a wide range of technical and technological innovations. The show is highlighted by technical conferences and congresses.

    DETAIL

    Wevo is going to be the first time an exhibitor at the Enova and displays its latest casting, bonding and sealing solutions.