{"title":"Doped NaMnOx cathodes for Zn-MnO2 batteries for improved capacity and rechargeability","authors":"Yiğit Akbaş , Necdet Özgür Darıcıoğlu , Tayfur Öztürk","doi":"10.1016/j.materresbull.2024.113159","DOIUrl":null,"url":null,"abstract":"<div><div>Zn-MnO<sub>2</sub> batteries are safe, low cost, and have a high energy density comparable to Li-ion batteries. This study focuses on finding a new MnO<sub>2</sub>-based cathode composition for rechargeable mildly acidic Zn-MnO<sub>2</sub> battery. For this purpose, a combinatorial approach was used, and thick film cathodes were deposited on nickel substrates using sputter targets MnO<sub>2</sub>, Na<sub>0.7</sub>MnO<sub>2</sub>, NiO and Bi<sub>2</sub>O<sub>3</sub>. A total of 36 cathodes were produced over a wide compositional range. The study has shown two regions of high rechargeable capacity, one centered on Bi<sub>0.02</sub>Na<sub>0.63</sub>Ni<sub>0.02</sub>Mn<sub>0.33</sub>O<sub>x</sub> and the other on Bi<sub>0.04</sub>Na<sub>0.37</sub>Ni<sub>0.06</sub>Mn<sub>0.53</sub>O<sub>x</sub> to be developed as cathodes using conventional slurry method.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"182 ","pages":"Article 113159"},"PeriodicalIF":5.3000,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Research Bulletin","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0025540824004896","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
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Abstract
Zn-MnO2 batteries are safe, low cost, and have a high energy density comparable to Li-ion batteries. This study focuses on finding a new MnO2-based cathode composition for rechargeable mildly acidic Zn-MnO2 battery. For this purpose, a combinatorial approach was used, and thick film cathodes were deposited on nickel substrates using sputter targets MnO2, Na0.7MnO2, NiO and Bi2O3. A total of 36 cathodes were produced over a wide compositional range. The study has shown two regions of high rechargeable capacity, one centered on Bi0.02Na0.63Ni0.02Mn0.33Ox and the other on Bi0.04Na0.37Ni0.06Mn0.53Ox to be developed as cathodes using conventional slurry method.
期刊介绍：
Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.
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