The Ragone plot is a graphical representation that shows the trade-off between the energy density and power density of different energy storage devices. This plot is commonly used in the field of energy storage research to compare the performance of various technologies and to identify the most promising candidates for specific applications.
The energy density of a storage device refers to the amount of energy that can be stored per unit volume or mass. This parameter is critical for applications that require long-term energy storage, such as electric vehicles and grid-scale energy storage systems. On the other hand, the power density of a storage device refers to the rate at which energy can be delivered per unit volume or mass. This parameter is essential for applications that require high power output in a short period of time, such as portable electronics and electric power tools.
The Ragone plot is named after John B. Ragone, who first proposed this graphical representation in the early 1970s. The plot is a two-dimensional graph with power density plotted on the y-axis and energy density plotted on the x-axis. Each data point on the plot represents a specific energy storage device, and the position of the point indicates the trade-off between energy density and power density for that device.
Reference: FelixF1iX, CC BY-SA 4.0 https://creativecommons.org/licenses/by-sa/4.0 via Wikimedia Commons
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