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題名 | 鎳氫電池正極材料氫氧化鎳粉末的製備=Preparation of Ni(OH)[feaf]Powder for Positive Electrode of Ni-MH Battery |
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作者 | 楊純誠; | 書刊名 | 明志技術學院學報 |
卷期 | 32 2000.06[民89.06] |
頁次 | 頁69-82 |
分類號 | 468.1 |
關鍵詞 | Ni-MH電池; 化學沉澱法; Ni(OH)[feaf]粉末; 產率; 生產速率; Ni-MH battery; Chemical precipitation method; Ni(OH)[feaf] powder; Yield; Production rate; |
語文 | 中文(Chinese) |
中文摘要 | 本研究是以實驗室規模1000毫升大小的反應器以批次式方式製備Ni(OH)�秤誑� ,製備是以化學沉澱法( chemical precipitation method )產生 Ni(OH) �秤誑翩C 反應 物是高純度的 NiSO �瓷BNH �� OH 和 NaOH 三種化合物。 製造 Ni(OH) �秤誑蔽獄s程變數 很多,例如:鎳離子濃度、NH �倏@度、NaOH 濃度、原物料純度、溫度、pH、質傳速率(轉 速)、 攪拌器形狀和大小等, 對粉末的粒徑大小及形狀、 產率( yield )及生產速率( production rate )的影響做有系統的研究。實驗中研究化學沉澱的反應速率及動力學模式 ,求出動力反應速率常數,找出最佳化製備條件。所製備的 Ni(OH) �秤誑翩A依其物理、化 學性質,如粒徑大小及分佈狀況、化學組成、含水率、密度、熱安定性等分別做檢測分析。 Ni(OH) �秤誑蔽漯磾惕庥A,以掃瞄式電子顯微鏡( SEM )做表面觀察;粉末化學成分由原 子吸光儀( AAS )或 EDS 分析;熱安定性及含水率使用 DSC/TGA 熱分析儀; 密度測量使 用比重瓶法;粉末的粒徑大小及分佈情形使用粒徑分佈分析儀;反應後鎳離子濃度使用原子 吸光儀分析。 本實驗室所製備的 Ni(OH) �秤誑翩A並與商業上 OMG 生產的 Ni(OH) �秤誑� 同時做比較分析。 由化學應沉澱法可製備得到 Ni-MH 電池的正極材料 Ni(OH) �秤誑翩A化 學沉澱法生產快速且製程簡單易控制,可避免高溫高壓的製造程序為其最大優點。 |
英文摘要 | This study is investigated the production of Ni(OH)�皰owder from 1000 ml batch reactor by a chemical precipitation method. Three high purity raw materials are NiSO ��,NH �� OH, and NaOH. There are many process variables for the production Ni(OH) �� powder, such as [Ni �� ], [NH �� ] and NaOH concentration, purity, temperature, pH, mass transfer rate (rotation speed), agitator shape and dimension; above those variables effect the powder's size and the dimensions, the yield and the production rate of powder. In this study, we found the optimum operation conditions to give a maximum of yield and production rate of powders. The physical and chemical properties of Ni(OH) �� powder, such as: particle size and distribution, composition, content of water, density, thermal stability, etc., were experimentally systematically investigated. The surface morphology of Ni(OH) �� powder was examined by SEM; the composition was analyzed by complexometric titration and Atomic Absorption Spectroscopy (AAS) or X-ray Energy Disperse Spectrometer (EDS); the thermal stability and water content were investigated by DSC/TGA; the density was measured by the bottle method; the particle's size and distribution were examined by the particle analyzer; the residual Ni �� concentration were also analyzed by the complexometric titration method and the atomic spectroscopy method. The properties of laboratory-made powder will compare with that of the commercial OMG Ni(OH) �� products. It is feasible to prepare the Ni(OH) �� powder for the Ni/MH battery from the chemical precipitation method. This chemical method is much high production rate and process easily to control. |
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