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=0.4 and 0.5. The average grain size increases from 2.1 μm at x=0.4 to 4.5 μm at x=0.5. In Fig. 4, the element mapping of sample measured by EDS at x=0.4 shows that the elements of Ni, Zn, Fe, Cr, O... for water purification? [J]. Coordination Chemistry Reviews, 2016, 315: 90-111. [9] JACOBO S E, BERCOFF P G. Structural and electromagnetic properties of yttrium-substituted Ni-Zn ferrites [J......
, low cost and no-toxicity [1-3]. Despite so many good performances, the commercial applications of Zn-Ni alkaline secondary batteries are severely hindered by poor cycle lifetime, which mainly results...] BRONOEL G, MILLOT A, TASSIN N. Development of Ni-Zn cells [J]. Journal of Power Sources, 1991, 34: 243-255. [2] BASS K, MITCHELL P J, WILCOX G D. Methods for the reduction of shape change and dendritic......
DOI: 10.11817/j.ysxb.1004.0609.2020- 37843 真空蒸馏Zn-Ni二元合金气-液相平衡研究 徐俊杰1,2,3,庞 俭1,2,3,孔令鑫1,2,3,4, *,徐宝强1,2,3,4,杨斌1,2,3,4,任佳琦1,2,3 (1. 昆明理工大学 真空冶金国家工程实验室,云南 昆明 650093; 2. 昆明理工大学 冶金与能源工程学院,云南 昆明 650093; 3. 云南省有色金属真空冶金重点实验室,云南 昆明 650093; 4. 复杂有色金属资源清洁利用国家重点实验室,云南 昆明 650093 ) 摘 要:在系统压力5-10 Pa,蒸馏温度1173 K-1423 K,开展Zn-Ni二元合金真空蒸馏实验研究,结果表明:液相中Ni含量由18.21 wt %增至96.05 wt %,气相中Zn含量由0增至99.9966 wt %,并且......
DOI: 10.11817/j.ysxb.1004.0609.2020- 37843 真空蒸馏Zn-Ni二元合金气-液相平衡研究 徐俊杰1,2,3, 庞 俭1,2,3, 孔令鑫1,2,3,4, *, 徐宝强1,2,3,4, 杨斌1,2,3,4, 任佳琦1,2,3 (1. 昆明理工大学真空冶金国家工程实验室,云南昆明 650093; 2. 昆明理工大学冶金与能源工程学院,云南昆明 650093; 3. 云南省有色金属真空冶金重点实验室,云南昆明 650093; 4. 复杂有色金属资源清洁利用国家重点实验室,云南昆明 650093 ) 摘 要:在系统压力5-10 Pa,蒸馏温度1173 K-1423 K,开展Zn-Ni二元合金真空蒸馏实验研究,结果表明:液相中Ni含量由18.21 wt %增至96.05 wt......
高的容量保持率和更长的循环寿命.Ca(OH)2 是最常用的阳极添加剂,该添加剂的作用机理是:在碱性环境下,Ca(OH)2 会和发生反应生成锌酸钙(Ca(OH)2·2Zn(OH)2·2H2O),锌酸钙的存在可以阻止大离子向电解质溶液迁移,减少活性物质的损失从而抑制电极形变[37].YU等[38]直接将锌酸钙(Ca(OH)2.2Zn(OH)2.2H2O)作为Ni-Zn二次电池的阳极活性物质,发现与...元合金之外,也有三元合金,四元合金的相关报道[48-49],其原理和二元合金基本相同,体现了金属之间的协同效应. 合金制备的方法对阳极的性能有着较大的影响,通常情况下,与物理方法相比,化学方法制备出的合金其成分分布更为均匀,电化学性能也更为优异.LIU等[50]通过将金属盐三氟甲磺酸镍(Ni(TfO)2)添加到含有Zn(TfO)2的离子液体1-乙基-3-甲基咪唑三氟甲磺酸盐([EMIm]TfO)中......
文献标识码:A 文章编号:1672-7207(2008)05-0918-05 Preparation of calcium zincate as negative electrode material for Ni/Zn...(OH)2 to ZnO of 1?2.02. The sample was characterized by XRD, TGA, particle size analysis, cyclic voltammetry and charge-discharge test of simulated Ni/Zn battery. The results show that the chemical......
, and simultaneously prevented dendrite growth and densification of the anode. Key words: carbon-coated nano-ZnO; sol-gel method; porous hierarchical architecture; Zn-Ni battery 1 Introduction Pollution-free... of discharge capacity difference in nano-ZnO@C particles and commercial ZnO particles (b) Figure 7 displays the typical charge-discharge curves of Zn/Ni cells assembled for the three different anode......
. Then ferrous ammonium sulphate of 1.6 g was added to the solution. After stirring for 10 min, stoichiometric amount of Ni(NO3)2·6H2O, Zn(NO3)2·6H2O and Co(NO3)2·6H2O was introduced into the mixed...;change in Ms may be attributed to the change in Ni and Zn concentrations in spinel lattice. As the concentration of Fe3+ ions in sublattice is diluted by low concentrations of diamagnetic substitutions......
properties of Ni-Zn ferrites [J]. Transactions of Nonferrous Metals Society of China, 2015, 25: 3678-3684. [3] BARMAN J, RAVI S. Study of exchange bias behavior in Ni(Cr1-xFex)2O4 [J]. Solid State... Chemistry, 2002, 165: 165-170. [15] GABAL M A, EL-SHISHTAWY R M, ANGARI Y M A. Structural and magnetic properties of nano-crystalline Ni-Zn ferrites synthesized using egg-white precursor [J]. Journal......
, 2002, 246(3): 434-439. [5]黄婉霞, 毛健, 吴行. 铁磁性Mn-Zn, Ni-Zn铁氧体与铁电性BaTiO3复合吸收电磁波能力研究[J]. 四川联合大学学报, 1998, 2(6): 110-113. HUANG Wan-xia, MAO Jian, WU Xing. Study of electromagnetic wave absorption of ferromagnetic/ferro electric composite(Mn-Zn ferrite/BaTiO3 and Ni-Zn ferrite/BaTiO3)[J]. Journal of Sichuan University, 1998, 2(6): 110-113. [6]黄小忠, 李效东, 冯春祥. BaFe12O19铁氧体磁性碳纤维研制[J]. 功能材料, 2000, 31(4......