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As the most widely used energy storage device in consumer electronic and electric vehicle fields, lithium ion battery (LIB) is closely related to our daily lives, on which its safety is of paramount importance. LIB is a typical multidisciplinary product. A tiny single cell is composed of both organic and inorganic materials in multi scale. In addition, its relatively closure property made it difficult to be studied on line, let alone in the battery pack or system level. Safety, often manifested by stability on abuse, including mechanical, electrical, and thermal abuses, is a quite complicated issue of LIB. Safety has to be guaranteed in large scale application. Here, safety issues related to key materials and cell design techniques will be reviewed. Key materials, including cathode, anode, electrolyte, and separator, are the fundamental of the battery. Cell design and fabrication techniques also have significant influence on the cell's electrochemical and safety performances. Here, we will summarize the thermal runaway process in single cell level, and some recent advances on battery materials and cell design.

This article offers an empirical articulation of paradigmatic views that guide research in contemporary public administration. Based on the findings, the authors argue that the debate on whether there is an intellectual core in public administration is becoming less relevant. What is more important from this point on is public administration scholars’ self-consciousness and better articulation of these existing paradigms. A self-aware normal science practice in public administration offers us a clearer research focus, a sharper sensitivity for recognizing anomalies, and thus a better chance for advancing public administration theories.

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