Comparison of Aqueous- and Non-Aqueous-Based Binder Polymers and the Mixing Ratios for Zn//MnO2 Batteries with Mildly Acidic Aqueous Electrolytes
| Autor: | Daniel Biro, Kai Peter Birke, Stefan Ingenhoven, Oliver Fitz, Harald Gentischer, Dragos Saracsan, Christian Bischoff |
|---|---|
| Přispěvatelé: | Publica |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
TK1001-1841
Styrene-butadiene Energy Engineering and Power Technology 02 engineering and technology Electrolyte stationary energy storage 010402 general chemistry 01 natural sciences solvent mixing ratio chemistry.chemical_compound Production of electric energy or power. Powerplants. Central stations zinc ion batteries SEM-EDX Electrochemistry medicine Electrical and Electronic Engineering Wasserstofftechnologie und elektrischer Energiespeicher Aqueous solution Chemistry manganese dioxide Polyacrylonitrile SEM+EDX Carbon black 021001 nanoscience & nanotechnology electrode fabrication Cellulose acetate TP250-261 621.3 0104 chemical sciences Carboxymethyl cellulose Solvent electrochemical impedance spectroscopy Industrial electrochemistry Batteriezelltechnologie Photovoltaik polymer binder 0210 nano-technology Nuclear chemistry medicine.drug doctor blade coating |
| Zdroj: | Batteries Volume 7 Issue 2 Batteries, Vol 7, Iss 40, p 40 (2021) |
| ISSN: | 2313-0105 |
| DOI: | 10.3390/batteries7020040 |
| Popis: | Considering the literature for aqueous rechargeable Zn//MnO2 batteries with acidic electrolytes using the doctor blade coating of the active material (AM), carbon black (CB), and binder polymer (BP) for the positive electrode fabrication, different binder types with (non-)aqueous solvents were introduced so far. Furthermore, in most of the cases, relatively high passive material (CB+BP) shares ~30 wt% were applied. The first part of this work focuses on different selected BPs: polyacrylonitrile (PAN), carboxymethyl cellulose (CMC), styrene butadiene rubber (SBR), cellulose acetate (CA), and nitrile butadiene rubber (NBR). They were used together with (non-)aqueous solvents: DI-water, methyl ethyl ketone (MEK), and dimethyl sulfoxide (DMSO). By performing mechanical, electrochemical and optical characterizations, a better overall performance of the BPs using aqueous solvents was found in aqueous 2 M ZnSO4 + 0.1 M MnSO4 electrolyte (i.e., BP LA133: 150 mAh·g−1 and 189 mWh·g−1 @ 160 mA·g−1). The second part focuses on the mixing ratio of the electrode components, aiming at the decrease of the commonly used passive material share of ~30 wt% for an industrial-oriented electrode fabrication, while still maintaining the electrochemical performance. Here, the absolute CB share and the CB/BP ratio are found to be important parameters for an application-oriented electrode fabrication (i.e., high energy/power applications). |
| Databáze: | OpenAIRE |
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