The sodium sulfur batteries market is expected to grow gradually during the forecast period of 2014 to 2025 at highest CAGR. Sodium sulfur batteries also called as NaS batteries.NaSbatteriesaremade up of many cells. Each cell is typically made in a tall, cylindrical configuration. The entire cell is enclosed by a steel casing that is protected, usually by chromium and molybdenum, from internal corrosion. This outside container serves as the positive electrode, while the liquid sodium serves as the negative electrode. The container is sealed at the topwith an airtight alumina lid. An essential part of the cell is the presence of a beta-alumina solid electrolyte (BASE) membrane, which selectively conducts Na+. The cell becomes more economical with increasing size.
These batteries are elevated by adding electrodes to improve their lifespan and operational flexibility. It also eradicates the risk of fire calamities. However, sodium sulfur batteries are hazardous and catch fire instantly if they come in contact with air and moisture. The high working temperature along with the highly corrosive nature of the sodium polysulfide allows this technology to only be used in stationary applications such as grid energy storage.
The active materials in sodium-sulfur batteries are molten sulfur, which is used as a positive electrode and molten sodium, which is used as a negative electrode. For instance, in 2011, Japan based NGK’s plant, which used sodium-sulfur batteries for storing electricity, caught fire due to the flow of molten salt over sand fillers. Increasing infrastructure investments, growing population, rising demand of power and ecofriendly energy storage are the factors driving the growth of global sodium sulfur batteries market.
The threat of moisture is rather important for sodium sulfur batteries, giving rise to regular battery servicing as well as individual cell inspection to guarantee long term operation. Periodic maintenance, inspection and sealing costs, regulations on distributed energy storage (DES) and installation in inaccessible places are probable factors restraining the growth of the global sodium sulfur batteries market. The global sodium sulfur batteries market is segmented on the basis of application and region. On the basis of application, the global market is classified into Ancillary Services, Load Levelling, Renewable Energy Stabilization.
Geographically, the global market is segmented into North America (U.S., Canada), Latin America (Mexico, Brazil), Western Europe (Germany, Italy, France, England, Spain, Nordic countries, Belgium, The Netherlands, Luxembourg), Eastern Europe (Poland, Russia), Asia Pacific (China, India, ASEAN, Australia & New Zealand, Japan), Middle East and Africa (GCC, S. Africa, N. Africa).
In 2015, North America accounted for the largest market share of sodium sulfur batteries in terms of revenue and is estimated to remain dominant over the forecast period of 2014 to 2025. Europe is the second largest region to hold the maximum market share of overall market. Asia Pacific and Japan are anticipated to expand at a considerable growth and will contribute to the global sodium sulfur batteries market value showing a healthy CAGR during the forecast period, 2015 to 2025. The key players of the global market are NGK Insulators Ltd, KEMET Electronics Corporation, Eagle Picher Technologies LLC, GE Energy, Ceramatec, Inc, FIAMM Group, POSCO, Sieyuan Electric Co. Ltd.
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