scholarly journals Sodium iron sulfate alluaudite solid solution for Na-ion batteries: moving towards stoichiometric Na2Fe2(SO4)3

2019 ◽  
Vol 7 (14) ◽  
pp. 8226-8233 ◽  
Author(s):  
Thomas Jungers ◽  
Abdelfattah Mahmoud ◽  
Cedric Malherbe ◽  
Frederic Boschini ◽  
Benedicte Vertruyen
Keyword(s):  
Solid Solution ◽  
Iron Sulfate ◽  
Precipitation Method ◽  
Stoichiometric Compound ◽  
Electrochemically Active

The elusive Na2Fe2(SO4)3 stoichiometric compound was obtained through a precipitation method and is electrochemically active as a cathode.

Facile preparation of mesoporous Cu–Sn solid solutions as active catalysts for CO oxidation

RSC Advances ◽  
2015 ◽  
Vol 5 (33) ◽  
pp. 25755-25764 ◽  
Author(s):  
Yarong Li ◽  
Honggen Peng ◽  
Xianglan Xu ◽  
Yue Peng ◽  
Xiang Wang
Keyword(s):  
Solid Solution ◽  
Co Oxidation ◽  
Water Vapour ◽  
Solid Solutions ◽  
Precipitation Method ◽  
Oxidation Activity ◽  
Facile Preparation ◽  
Co Precipitation

A mesoporous Cu0.5Sn0.5Oy solid solution catalyst with Caramel-Treats-like morphology prepared easily by co-precipitation method exhibits remarkably improved CO oxidation activity and potent resistance to water vapour deactivation.

scholarly journals Experimental Investigation of the Phase Equilibria in the Al-Mn-Zn System at 400°C

2014 ◽  
Vol 2014 ◽  
pp. 1-13 ◽  
Author(s):  
Tian Wang ◽  
Dmytro Kevorkov ◽  
Ahmad Mostafa ◽  
Mamoun Medraj
Keyword(s):  
Solid Solution ◽  
Ternary System ◽  
Terminal Solid Solution ◽  
Stoichiometric Compound ◽  
Diffusion Couples ◽  
Ternary Compounds ◽  
Ternary Solubility ◽  
Limited Solid Solubility ◽  
Binary Compounds ◽  
Phase Relationships

Al-Mn-Zn ternary system is experimentally investigated at 400°C using diffusion couples and key alloys. Phase relationships and homogeneity ranges are determined for binary and ternary compounds using EPMA, SEM/EDS, and XRD. Reported ternary compound T3 (Al11Mn3Zn2) is confirmed in this study and is denoted as τ2 in this paper. Two new ternary compounds (τ1 and τ3) are observed in this system at 400°C. τ1 is determined as a stoichiometric compound with the composition of Al31Mn8Zn11. τ3 has been found to have homogeneity range of AlxMnyZnz (x=9–13 at%; y=11–15 at%; z=75–77 at%). The binary compounds Al4Mn and Al11Mn4 exhibit limited solid solubility of around 6 at% and 4 at% Zn, respectively. Terminal solid solution Al8Mn5 is found to have maximum ternary solubility of about 10 at% Zn. In addition, ternary solubility of Al-rich β-Mn′ at 400°C is determined as 4 at% Zn. Zn-rich β-Mn′′ has a ternary solubility of 3 at% Al. The solubility of Al in Mn5Zn21 is measured as 5 at%. Based on the current experimental results, the isothermal section of Al-Mn-Zn ternary system at 400°C has been constructed.

Synthesis of sodium magnesium iron sulfate rod-likes as NASICON using the precipitation method

2011 ◽  
Vol 65 (9) ◽  
pp. 1355-1356
Author(s):  
M. Zakeri ◽  
M. Eskandari ◽  
M.J. Esmaili
Keyword(s):  
Iron Sulfate ◽  
Precipitation Method ◽  
Sodium Magnesium

scholarly journals Fast Li-Ion Conduction in Spinel-Structured Solids

Molecules ◽  
2021 ◽  
Vol 26 (9) ◽  
pp. 2625
Author(s):  
Jan L. Allen ◽  
Bria A. Crear ◽  
Rishav Choudhury ◽  
Michael J. Wang ◽  
Dat T. Tran ◽  
...  
Keyword(s):  
Solid Solution ◽  
Single Phase ◽  
Electronic Conductivity ◽  
Phase Interface ◽  
Ion Conductivity ◽  
Ion Conduction ◽  
Solid Electrode ◽  
Electrochemically Active ◽  
Li Ion ◽  
Multi Phase

Spinel-structured solids were studied to understand if fast Li+ ion conduction can be achieved with Li occupying multiple crystallographic sites of the structure to form a “Li-stuffed” spinel, and if the concept is applicable to prepare a high mixed electronic-ionic conductive, electrochemically active solid solution of the Li+ stuffed spinel with spinel-structured Li-ion battery electrodes. This could enable a single-phase fully solid electrode eliminating multi-phase interface incompatibility and impedance commonly observed in multi-phase solid electrolyte–cathode composites. Materials of composition Li1.25M(III)0.25TiO4, M(III) = Cr or Al were prepared through solid-state methods. The room-temperature bulk Li+-ion conductivity is 1.63 × 10−4 S cm−1 for the composition Li1.25Cr0.25Ti1.5O4. Addition of Li3BO3 (LBO) increases ionic and electronic conductivity reaching a bulk Li+ ion conductivity averaging 6.8 × 10−4 S cm−1, a total Li-ion conductivity averaging 4.2 × 10−4 S cm−1, and electronic conductivity averaging 3.8 × 10−4 S cm−1 for the composition Li1.25Cr0.25Ti1.5O4 with 1 wt. % LBO. An electrochemically active solid solution of Li1.25Cr0.25Mn1.5O4 and LiNi0.5Mn1.5O4 was prepared. This work proves that Li-stuffed spinels can achieve fast Li-ion conduction and that the concept is potentially useful to enable a single-phase fully solid electrode without interphase impedance.

Formation of a solid solution of U1−xGdxO2 by a co-precipitation method

1986 ◽  
Vol 138 (1) ◽  
pp. 142-144 ◽  
Author(s):  
C. Miyake ◽  
M. Kanamaru ◽  
S. Imoto
Keyword(s):  
Solid Solution ◽  
Precipitation Method ◽  
Co Precipitation

scholarly journals A Facile and Scalable Approach to Ultrathin NixMg1−xO Solid Solution Nanoplates and Their Performance for Carbon Dioxide Reforming of Methane

Catalysts ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 544
Author(s):  
Guoqiang Zhang ◽  
Zhiyun Zhang ◽  
Yunqiang Wang ◽  
Yanqiu Liu ◽  
Qiping Kang
Keyword(s):  
Carbon Dioxide ◽  
Solid Solution ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Metallic Nickel ◽  
Precipitation Method ◽  
Low Carbon ◽  
Carbon Dioxide Reforming ◽  
One Pot

Carbon dioxide reforming of methane (CRM) represents a promising method that can effectively convert CH4 and CO2 into valuable energy resources. Herein, ultrathin NixMg1−xO nanoplate catalysts were synthesized using a scalable and facile process involving a one-pot, co-precipitation method in the absence of surfactants. This approach resulted in the synthesis of planar NixMg1−xO catalysts that were much thinner (˂8 nm) with larger specific surface area (>120 m2/g) in comparison to NixMg1−xO catalysts prepared by conventional methods. The ultrathin NixMg1−xO nanoplate catalysts exhibited high thermal stability, catalytic activity, and durability for CRM. Especially, these novel catalysts exhibited excellent anti-coking behavior with a low carbon deposition of 2.1 wt.% after 36 h of continuous reaction compared with the conventional catalysts, under the reaction conditions of the present study. The improved performance of the thin NixMg1−xO nanoplate catalysts was attributed to the high specific surface area and the interaction between metallic nickel nanocatalysts and the solid solution substrates to stabilize the Ni nanoparticles.

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