High capacitive h‐MoO₃ hexagonal rods and its applications towards lithium ion battery, humidity and nitrite sensing

Abstract

In this paper, the authors have investigated a suitable material for rechargeable lithium-ion battery, which poses a challenge to the researchers in the search for alternate electrode materials. An analysis of humidity as well as nitrite sensing application, the potential of this material has been reported. MoO 3 can reversibly store large amounts of Li; it can be a potential alternative electrode among currently existing anode materials. The self-assembled hexagonal rods of h-MoO 3 as flowers have been synthesized via a simple and facile low temperature reflux method. The measured mean crystallite size and band gap (E g ) of h-MoO 3 hexagonal crystalline structure are 52 nm and 3.48 eV as per the XRD and UV-vis DRS studies respectively. Hexagonal rod shaped h-MoO 3 anodes exhibit remarkable electrochemical stability, recyclability, high rate capability; which produce the initial discharge capacity of 1869 mAh g −1 and then the capacity retained around 619 mAh g −1 at 100 th cycle of chargedischarge profile by applying the current rate of C/15. This simple and novel material synthesis provides unique morphology of hexagonal rods shaped h-MoO 3 flowers; and this scheme provides the facile pathways which enable the ease of electron transportation. The sensing activity of modified glassy electrode of h-MoO 3 has shown a limit of detection of 0.196 μM for 1 mM nitrite sensing. It also showed high humidity sensing response of 97.9 %, and indicated that the h-MoO 3 flowery material is well suitable for industrial applications. K E Y W O R D Sh-MoO 3 hexagonal rods, humidity sensor, lithium ion battery, reflux method | INTRODUCTIONEnergy comprised of its sources and effective fulfilment of the global needs. Among the primary dependent energy sources (fossil fuels, nuclear, hydro, solar, geothermal and bio-fuels), the non-renewable and renewable energy sources come with a downside for the large scale exhaling of energy. These non-renewable energy sources have to be harvested by mining; it causes the combustion, carbon emissions and nuclear wastage. Eventually, it leads to Udayabhanu and V. Pavitra contributed equally to this study.

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