| METHOD FOR LIQUID-PHASE SYNTHESIS OF NANOSTRUCTURED CERAMIC MATERIAL IN SYSTEM FOR CREATING ELECTROLYTE OF SOLID OXIDE FUEL CELL | |
| 2024-04-01 | |
| 专利权人 | ST PETERSBURG NUCLEAR PHYSICS INST (SPET-Non-standard) |
| 申请日期 | 2024-04-01 |
| 专利号 | RU2835498-C1 |
| 成果简介 | NOVELTY - Invention relates to a method of producing solid oxide fuel cells by directed liquid-phase synthesis based on a method of combined crystallisation of nitrate salts for producing precursor powders and ceramic oxide nanocomposites of a given chemical composition. Initial reagents are cerium nitrate salts Ce(NO3)3⋅6H2O and neodymium Nd(NO3)3⋅6H2O, from which solutions with concentration of 0.1 M were prepared. Obtained solutions are mixed taking into account the specified stoichiometric ratio of oxides and by means of joint precipitation of hydroxides using reverse titration with subsequent freezing, xerogel is synthesized. Obtained xerogel is subjected to low-temperature drying at 150 °C, then X-ray amorphous xerogel is subjected to heat treatment at 600 °C, then to obtained precursor powder with chemical formula (CeO2)1-x(Nd2O3)x, where x=0.05; 0.10; 0.15; 0.20; 0.25 sintering additive of zinc oxide ZnO is added in amount of 3 wt.% over the main weight of charge. Further, the obtained nanopowders are consolidated by uniaxial cold pressing at pressure of 150 MPa, followed by sintering at 1,300 °C for 2 hours. USE - Chemistry. ADVANTAGE - During low-temperature treatment – gel freezing, along with removal of adsorption and crystallisation water from gel-like sediment, its maximum fast hardening also occurs, which enables to preserve high chemical homogeneity in the solid phase, and the use of low-temperature treatment in the synthesis process determines the evolution of the microstructure. |
| IPC 分类号 | B82Y-030/00 ; C04B-035/50 ; C04B-035/626 ; H01M-008/126 |
| 国家 | 俄罗斯 |
| 专业领域 | 材料科学 |
| 语种 | 英语 |
| 成果类型 | 专利 |
| 文献类型 | 科技成果 |
| 条目标识符 | http://119.78.100.226:8889/handle/3KE4DYBR/17435 |
| 专题 | 中国科学院新疆生态与地理研究所 |
| 作者单位 | ST PETERSBURG NUCLEAR PHYSICS INST (SPET-Non-standard) |
| 推荐引用方式 GB/T 7714 | KALININA M V,POLIAKOVA I G,KHAMOVA T V,et al. METHOD FOR LIQUID-PHASE SYNTHESIS OF NANOSTRUCTURED CERAMIC MATERIAL IN SYSTEM FOR CREATING ELECTROLYTE OF SOLID OXIDE FUEL CELL. RU2835498-C1[P]. 2024. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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