A fast sol–gel synthesis leading to highly crystalline birnessites under non-hydrothermal conditions

2017 ◽  
Vol 46 (14) ◽  
pp. 4582-4588 ◽  
Author(s):  
S. Ziller ◽  
J. F. von Bülow ◽  
S. Dahl ◽  
M. Lindén
Keyword(s):  
Cathode Materials ◽  
Water Oxidation ◽  
Manganese Oxides ◽  
Sol Gel ◽  
Li Ion Batteries ◽  
Oxidation Catalysts ◽  
Hydrothermal Conditions ◽  
Li Ion ◽  
Sol Gel Synthesis

Manganese oxides from the compound family of layered birnessites have attracted interest for their use as cathode materials in Li-ion batteries, as supercapacitors, and as water oxidation catalysts.

Sol–gel synthesis of multiwalled carbon nanotube-LiMn2O4 nanocomposites as cathode materials for Li-ion batteries

2010 ◽  
Vol 195 (13) ◽  
pp. 4290-4296 ◽  
Author(s):  
Xian-Ming Liu ◽  
Zheng-Dong Huang ◽  
Seiwoon Oh ◽  
Peng-Cheng Ma ◽  
Philip C.H. Chan ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Cathode Materials ◽  
Sol Gel ◽  
Multiwalled Carbon Nanotube ◽  
Li Ion Batteries ◽  
Multiwalled Carbon ◽  
Li Ion ◽  
Sol Gel Synthesis

Facile hydrothermal and sol-gel synthesis of novel Sn-Co/C composite as superior anodes for Li-ion batteries

2014 ◽  
Vol 59 (23) ◽  
pp. 2875-2881 ◽  
Author(s):  
Xiaoli Zou ◽  
Xianhua Hou ◽  
Zhibo Cheng ◽  
Yanling Huang ◽  
Min Yue ◽  
...  
Keyword(s):  
Sol Gel ◽  
Li Ion Batteries ◽  
Li Ion ◽  
Sol Gel Synthesis

FACILE SOL–GEL SYNTHESIS OF Li[Li0.2Mn0.56Ni0.16Co0.08]O2 AS IMPROVED CATHODE MATERIAL FOR LITHIUM-ION BATTERIES

2013 ◽  
Vol 01 (04) ◽  
pp. 1340015
Author(s):  
WENJUAN HAO ◽  
HAN CHEN ◽  
YANHONG WANG ◽  
HANHUI ZHAN ◽  
QIANGQIANG TAN ◽  
...  
Keyword(s):  
Cathode Materials ◽  
Sol Gel ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Electrochemical Performances ◽  
Acetate Tetrahydrate ◽  
Li Ion Batteries ◽  
Gel Method ◽  
Sol Gel Method ◽  
Li Ion

Li [ Li 0.2 Mn 0.56 Ni 0.16 Co 0.08] O 2 cathode materials for Li -ion batteries were synthesized by a facile sol–gel method followed by calcination at various temperatures (700°C, 800°C and 900°C). Lithium acetate dihydrate, manganese (II) acetate tetrahydrate, nickel (II) acetate tetrahydrate and cobalt (II) acetate tetrahydrate are employed as the metal precursors, and citric acid monohydrate as the chelating agent. For the obtained Li [ Li 0.2 Mn 0.56 Ni 0.16 Co 0.08] O 2 materials, the metal components existed in the form of Mn 4+, Ni 2+ and Co 3+, and their molar ratio was in good agreement with 0.56 : 0.16 : 0.08. The calcination temperature played an important role in the particle size, crystallinity and further electrochemical properties of the cathode materials. The Li [ Li 0.2 Mn 0.56 Ni 0.16 Co 0.08] O 2 material calcined at 800°C for 6 h showed the best electrochemical performances. Its discharge specific capacities cycled at 0.1 C, 0.5 C, 1 C and 2 C rates were 266.0 mAh g−1, 243.1 mAh g−1, 218.2 mAh g−1 and 192.9 mAh g−1, respectively. When recovered to 0.1 C rate, the discharge specific capacity was 260.2 mAh g−1 and the capacity loss is only 2.2%. This work demonstrates that the sol–gel method is a facile route to prepare high performance Li [ Li 0.2 Mn 0.56 Ni 0.16 Co 0.08] O 2 cathode materials for Li -ion batteries.

scholarly journals Blend Hybrid Solid Electrolytes Based on LiTFSI Doped Silica-Polyethylene Oxide for Lithium-Ion Batteries

Membranes ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 109 ◽  
Author(s):  
Jadra Mosa ◽  
Jonh Fredy Vélez ◽  
Mario Aparicio
Keyword(s):  
Ionic Conductivity ◽  
Solid Electrolytes ◽  
Room Temperature ◽  
Sol Gel ◽  
Lithium Ion ◽  
Hybrid Structure ◽  
Hybrid Network ◽  
Li Ion Batteries ◽  
Li Ion ◽  
Sol Gel Synthesis

Organic/inorganic hybrid membranes that are based on GTT (GPTMS-TMES-TPTE) system while using 3-Glycidoxypropyl-trimethoxysilane (GPTMS), Trimethyletoxisilane (TMES), and Trimethylolpropane triglycidyl ether (TPTE) as precursors have been obtained while using a combination of organic polymerization and sol-gel synthesis to be used as electrolytes in Li-ion batteries. Self-supported materials and thin-films solid hybrid electrolytes that were doped with Lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) were prepared. The hybrid network is based on highly cross-linked structures with high ionic conductivity. The dependency of the crosslinked hybrid structure and polymerization grade on ionic conductivity is studied. Ionic conductivity depends on triepoxy precursor (TPTE) and the accessibility of Li ions in the organic network, reaching a maximum ionic conductivity of 1.3 × 10−4 and 1.4 × 10−3 S cm−1 at room temperature and 60 °C, respectively. A wide electrochemical stability window in the range of 1.5–5 V facilitates its use as solid electrolytes in next-generation of Li-ion batteries.

Preparation and magnetic performance of Co 0.8 Fe 2.2 O 4 by a sol–gel method using cathode materials of spent Li-ion batteries

2016 ◽  
Vol 42 (1) ◽  
pp. 1897-1902 ◽  
Author(s):  
Li Yang ◽  
Guoxi Xi ◽  
Tianjun Lou ◽  
Xinsheng Wang ◽  
Jingjing Wang ◽  
...  
Keyword(s):  
Cathode Materials ◽  
Sol Gel ◽  
Li Ion Batteries ◽  
Gel Method ◽  
Sol Gel Method ◽  
Magnetic Performance ◽  
Li Ion

scholarly journals An overview of bio-interface electrolyte and Li2FePO4F as cathode in Li-ion batteries

2019 ◽  
Vol 9 (2) ◽  
pp. 3866-3873
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Sol Gel ◽  
Lithium Ion ◽  
Li Ion Batteries ◽  
View Point ◽  
Iron Nickel ◽  
Li Ion ◽  
Charge Discharge

Composites of {[(1-x-y) LiFe0.333Ni0.333 Co0.333] PO4}, xLi2FePO4F and yLiCoPO4system were synthesized using the sol-gel method. Stoichiometric weights of the mole-fraction of LiOH, FeCl2·4H2O and H3PO4, LiCl, Ni(NO3)2⋅6H2O, Co(Ac)2⋅4H2O, as starting materials of lithium, Iron, Nickel , and Cobalt, in 7 samples of the system, respectively. We exhibited Li1.167 Ni0.222 Co0.389 Fe0.388 PO4 is the best composition for cathode material in this study. Obviously, the used weight of cobalt in these samples is lower compared with LiCoO2 that is an advantage in view point of cost in this study. Charge-discharge haracteristics of the mentioned cathode materials were investigated by performing cycle tests in the range of 2.4–3.8 V (versus Li/Li+). Our results confirmed, although these kind systems can help for removing the disadvantage of cobalt which mainly is its cost and toxic, the performance of these kind systems are similar to the commercial cathode materials in Lithium Ion batteries (LIBs).

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