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with fibrous morphology can be obtained. Key words: thermodynamic analysis; nickel-cobalt alloy; nickel-cobalt oxalate precursor; predefined Ni/Co ratio; fibre-shape 1 Introduction As important... metal ion and preferential precipitation of nickel oxalate or cobalt oxalate. Recently, PUJOL et al[15] conducted the research of nanostructured cobalt oxalate precipitation by using cryogenic electron......
Thermodynamic equilibrium calculation on preparation of copper oxalate precursor powder FAN You-qi(樊友奇), ZHANG Chuan-fu(张传福), ZHAN Jing(湛 菁), WU Jian-hui(邬建辉) School of Metallurgical Science.... It is shown that the thermodynamic mathematical model is correct and the calculated values are basically accurate. Key words: thermodynamic equilibrium; copper oxalate precursor; ultrafine copper......
Thermodynamic analysis on preparation of fibrous NiO precursor powders with oxalate precipitation process ZHAN Jing(湛 菁), ZHANG Chuan-fu(张传福), LI Tie-jing(李铁晶), WU Jian-hui(邬建辉) (School...-coordinated Ni(NH3)2+n(n=1, 2, …, 6) and the morphology of NiO powder precursor is fibrous; when pH is below 8.0, nickel ion directly reacts with C2O2-4 and the morphology of NiO powder precursor......
, and MnCl2 as starting materials, the triple oxalate precursor of nickel, cobalt, and manganese was synthesized by liquid-phase co-precipitation method. And then the LiNi1/3Co1/3Mn1/3O2 cathode materials... dispersion performance is well. The XRD pattern of the precursor demonstrates that all peaks are sharp and well-defined, suggesting that compound is well crystallized. Single-phase nickel oxalate, cobalt......
in the precursor. A fibriform precursor is a complicated ammonia-containing nickel-cobalt oxalate. The uniform shape-controlled fibrous precursor is obtained under the following optimum conditions: ammonia... cannot be solved. Moreover, the mechanism of fibre and composition of the precursor are not fully understood due to preferential precipitation of nickel oxalate or cobalt oxalate at different Ni to Co......
for the preparation of oxalate. 2.2 Preparation of precursor The precursor, lanthanum oxalate decahydrate, was prepared in SCISR. The sketch of the submerged circulative impinging stream reactor (SCISR) is shown... studies of the decomposition course of lanthanum oxalate decahydrate [J]. Thermochim Acta, 2002, 387(2): 109-114. [6] PETRYK J, KOLAKOWSKA E. Cobalt oxide catalysts for ammonia oxidation activated......
Beijing2. Beijing Key Lab of Green Recycling and Extraction of Metals,University of Science and Technology Beijing摘 要:Monodispersed microsized copper oxalate..., and segmented media on the final products were investigated experimentally. The obtained copper oxalate microsized particles were disc-like in the presence of citrate ligand,which was the shape inducer......
cobalt with ammonia precipitated by coordination of ammonia and cobalt reacting with oxalate is quite essential to form fibrous morphology for the precursor, which may be formed through [(NH3)M-OX-M(NH3...; 文献标志码:A 文章编号:1672-7207(2011)04-0876-08 Preparation of fibrous porous cobalt powders by thermal decomposition of cobalt oxalate complex......
编号:1672-7207(2013)06-2237-07 Synthesis and microstructure of ferrous oxalate dehydrate of different dimensionalities SU Yuchang1, 2, CHEN Hongyan1, HU Zexing1, LIU Sainan1, XIAO Lihua1, JIANG Min1 (1... South University, Changsha 410083, China) Abstract: Ferrous oxalate dehydrate powders of fine particle size, different microstructures and dimensionalities were prepared using H2CO4·2H2O and FeSO4·7H2O......
product. In Ref.[14], the thermodynamic analysis was studied on preparation of special copper precursor powder with oxalate precipitation process in Cu2+-C2O42--NH3-NH4+-H2O system. The theoretical... of precursor powder. Therefore, it is well worth having a detail study on experimental process of precursor preparation. In this research, the synthesis of complicated copper oxalate powder was researched......