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Comparative Ratings and Properties
Published in Alfred Rufer, Energy Storage, 2017
The Ragone chart is used for performance comparison of various energy storage devices (ESDs). The represented values on a Ragone chart are Specific energy or weight energy density (in Wh/kg) em versusSpecific power or power-to-weight ratio (in W/kg) pm
Fabric based printed-distributed battery for wearable e-textiles: a review
Published in Science and Technology of Advanced Materials, 2021
Adnan E. Ali, Varun Jeoti, Goran M. Stojanović
Studies regarding the potential application of textiles to store energy include supercapacitor [15,16] and batteries [17]. In each method of providing energy storage capability to textiles, incorporations could be performed within the textile material or built on its surface while also keeping the desirable properties of fabrics [18]. Since there is only limited free space available to connect electronic components and capacitive materials onto textiles, areal capacitance [19] is an important parameter in wearable devices. Thus, obtaining a higher mass loading [20] for every square centimeter of active material while keeping the quality of wearables is crucial for textile-based energy storage systems. Among various batteries and other energy storage devices, microbial fuel cell-based biobatteries are the least understood and developed for wearable and textile electronics applications [21]. Regardless of the energy storage system, the energy supply process occurs at the boundaries of electrode or electrolyte interface, and also the ions and electrons are transported separately. However, the energy storing and converting mechanisms are different. While batteries are suitable for high-energy applications, supercapacitors are best suited for high-power applications. Most of these devices are overqualified and expensive for applications that consume only a small amount of energy for limited time; while, microbial fuel cells are suitable for a single use, disposable electronics applications. The difference between various energy storage devices can be explained using the so-called Ragone chart as shown in Figure 2, where different energy storage methods are grouped according to their energy and power density [22]. While the energy density stands for the amount of energy stored in a given mass, the power density refers to how quickly the stored energy could be released from the devices.