Abstract
The ZEBRA Battery is a high energy battery developed for powering a Zero Emission Vehicle (ZEV). The electrode materials used for production are salt (NaCl) and nickel (Ni) in combination with a ceramic electrolyte. During charging the salt is decomposed to sodium (Na) and nickel chloride (NiCl{sub 2}) is formed. During discharge salt is formed in the reverse reaction. This battery realizes an energy density of more than 90 Wh/kg which exceeds the USABC mid-term goals. These goals were set to achieve a ZEV with acceptable range and performance. The ZEBRA Battery has demonstrated the other USABC mid-term goals. 1.200 cycles in vehicle operation, more than 8 years in an accelerated calendar life test and recharge time of less than 6 hours. Due to the thermal management environmental conditions of {minus}30 C to +65 C do not cause any problems. In order to meet also the power and cost goals a program has been started. Two approaches for power improvement at 80% DOD show promising results: the geometric approach by increasing the surface area of the ceramic electrolyte and the chemical approach by additives to the cathode composition.
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