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Several studies have indicated the efficient operation of supercapacitors utilizing either aqueous or organic electrolytes even in extremely low temperatures, reaching as low as −40 °C [13, 14]. This adaptability is ascribed to the heightened freezing point depression values induced by an increased ionic concentration.
The field of low-temperature pseudocapacitors (LTPCs) has seen significant advancements, becoming a key domain in energy storage research. This review explores the latest developments in LTPCs, highlighting their potential as efficient energy storage devices.
High-reliability, high-power, ultra-high capacitance energy storage devices. 2.7V high-temperature and humidity supercapacitors, featuring a high energy density of over 4Wh/Kg. Feature a high energy density of over 5Wh/Kg and operate at 2.7V nominal DC voltage. Feature a high energy density of over 5Wh/Kg and operate at 3V nominal DC voltage.
For example, carbon materials offer high porosity, conductivity, and stability, rendering them suitable for supercapacitors operating at low temperatures. However, their electric double-layer energy storage mechanism often results in relatively low capacity.
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