Tungsten oxide nano-urchins are paid much attention due to good electrochromic performance. You know, tungsten oxide as an inorganic electrochromic material has attracted considerable attention as it is promising in applications of electrochromic glass - energy-saving smart glass having high shielding performance to near-infrared rays and high transmittance to visible light.
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Some experts have studied the electrochromic performance of the novel crystalline tungsten oxide nano-urchins comprised of W18O49 nanowires added to the sphere shell. The performance of electrochromic device was systematically compared by using tungsten oxide nano-structures with and without nanowires on the surface of nano-sphere and with different phase of W18O49 and WO3. The optimized electrochromic films with nano-urchin-like W18O49 exhibited a fast switching response time, outstanding high coloration efficiency, and durability within acidic electrolyte. This performance can be attributed to the high volume to surface ratio and phase of uniform urchin-like tungsten oxides.
