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Electrochemical performance and discharge mechanism of silver vanadium phosphorous oxide.

机译:银钒磷氧化物的电化学性能和放电机理。

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Silver Vanadium Phosphorous Oxide (SVPO), Ag2VO2PO 4, as an active electrode material has several good electrochemical properties which are large capacity, high current capability, and effective delivery of high current pulses. SVPO is synthesized hydrothermally at 230 °C using Silver (I) Oxide (Ag2O), Vanadium (V) Oxide (V 2O5), Phosphoric acid (H3PO4), and DI Water (H2O) as the starting materials in Acid Digestion reactors. The product, SVPO powder, was characterized by X-Ray Diffractometry (XRD), true density (pycnometry) and Differential Scanning Calorimetry (DSC). Because of its electrochemical properties, this material is desirable for Implantable Cardiac Defibrillator (ICD). Thus, several studies were conducted on this material for this application including improvement of the material's electrical conductivities as a cathode and change of the cathode as a function of depth of discharge. This thesis will reveal that discharging SVPO cells will increase the electrical conductivity because of formation of the silver nanoparticles, and decrease the true density of the SVPO.;Keywords: Silver Vanadium Phosphorous Oxide, XRD, pycnometry, DSC, 4-point probe, Lithium cells.
机译:作为活性电极材料的银钒磷氧化物(SVPO)Ag2VO2PO 4具有几个良好的电化学性能,它们具有大容量,高电流容量和有效输送大电流脉冲的特性。 SVPO是在230°C水热合成的,其中氧化银(I)氧化物(Ag2O),氧化钒(V)(V 2O5),磷酸(H3PO4)和去离子水(H2O)是酸消化反应器中的起始原料。通过X射线衍射(XRD),真密度(比重瓶)和差示扫描量热法(DSC)对产品SVPO粉末进行了表征。由于其电化学特性,这种材料是可植入心脏除颤器(ICD)所需要的。因此,针对该应用对该材料进行了几项研究,包括改善该材料作为阴极的电导率以及随着放电深度而变化的阴极。本论文将揭示放电的SVPO电池会由于形成银纳米颗粒而增加电导率,并降低SVPO的真实密度。关键词:氧化钒银,XRD,比重瓶,DSC,4点探针,锂细胞。

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