材料之间的结合决定了电池的特性，包括它的能量和功率密度，以及安全性、使用寿命和成本。
The combination of materials determines the characteristics of the battery, including its energy and power density, safety, longevity and cost.
并表明，开发中的电池在能量和功率密度、效率、500a充电和放电电流、内部电阻和维护等各方面都有极好的性能。
The battery under development has demonstrated excellent performance in terms of energy and power density, efficiency, 500a charge and discharge current, internal resistance and maintenance work.
综合设计和开发活动的目标是为了进一步改善功率密度，提高能量效率并减少制造成本。
The objective of the integrated design and development activity is to further improve power density, increase energy efficiency, and to reduce manufacturing cost.
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