Takeuchi Esther S, Marschilok Amy C, Takeuchi Kenneth J
Department of Chemistry, Stony Brook University, Stony Brook, NY 11794.
Department of Materials Science and Engineering, Stony Brook University, Stony Brook, NY 11794.
Electrochemistry (Tokyo). 2012 Oct;80(10):700-705. doi: 10.5796/electrochemistry.80.700.
Considerations of energy density, power, and calendar life are critical to effectively develop advanced secondary systems. For next generation battery applications requiring multiple features including long life, large cycle count, high energy density and high power, new strategies are needed for the rational design of electroactive materials and electrodes. This article discusses several conceptual approaches under exploration with examples from our research group. The first approach is the systematic synthesis of materials with structures facilitating ion insertion and deinsertion at high voltage and energy density, where we control materials properties such as surface area, particle size and in particular crystallite size. A second approach is the investigation of novel electrode structures and substrates to increase energy density and capacity retention under cycling, where we have developed strategies for minimizing passive components. A third approach is investigation of catalysts for metal air batteries where the cathode active material is drawn from the air rather than carried in the battery.
能量密度、功率和日历寿命的考量对于有效开发先进二次电池系统至关重要。对于需要长寿命、高循环次数、高能量密度和高功率等多种特性的下一代电池应用而言，合理设计电活性材料和电极需要新策略。本文结合我们研究小组的实例，讨论了几种正在探索的概念性方法。第一种方法是系统合成具有利于在高电压和能量密度下进行离子嵌入和脱嵌结构的材料，在此过程中我们控制诸如表面积、粒径尤其是微晶尺寸等材料特性。第二种方法是研究新型电极结构和基底，以提高循环过程中的能量密度和容量保持率，在此我们已制定了使无源组件最小化的策略。第三种方法是研究金属空气电池的催化剂，其中阴极活性材料取自空气而非存储在电池中。
