Electrochemical intercalation of lithium in ternary metal molybdates MMoO4(M=Cu,Zn)

2002 ◽  
Vol 756 ◽  
Author(s):  
Th. Buhrmester ◽  
N. N. Leyzerovich ◽  
K. G. Bramnik ◽  
H. Ehrenberg ◽  
H. Fuess
Keyword(s):  
Electrochemical Reaction ◽  
Rechargeable Batteries ◽  
Lithium Insertion ◽  
Galvanostatic Charge ◽  
Capacity Fading ◽  
X Ray ◽  
Lithium Rechargeable Batteries ◽  
Transitional Metal ◽  
Electrochemical Intercalation ◽  
Ternary Metal

ABSTRACTTernary oxides with general formula MMoO4 (where M is a 3d-transitional metal) were characterized as cathode materials for lithium rechargeable batteries by galvanostatic charge-discharge technique and cyclic voltammetry. The significant capacity fading after the first cycle of lithium insertion/removal takes place for different copper molybdates (standard a-CuMoO4and high-pressure modification CuMoO4 –III) corresponding to the irreversible copper reduction and formation of Li2MoO4 during the first discharge. X-ray powder diffraction data reveal the decomposition of pristine ZnMoO4 by electrochemical reaction, lithium zink oxide with the NaCl-type structure and Li2MoO3 seem to be formed.

scholarly journals Identifying the Degradation Mechanism in Commercial Lithium Rechargeable Batteries via High-Energy X-ray Compton Scattering Imaging

2020 ◽  
Vol 10 (17) ◽  
pp. 5855
Author(s):  
Kosuke Suzuki ◽  
Yuji Otsuka ◽  
Naruki Tsuji ◽  
Kazushi Hoshi ◽  
Yoshiharu Sakurai ◽  
...  
Keyword(s):  
Compton Scattering ◽  
Degradation Mechanism ◽  
High Energy ◽  
Rechargeable Batteries ◽  
Stable Phase ◽  
Promising Technique ◽  
X Ray ◽  
Lithium Rechargeable Batteries ◽  
S Parameter ◽  
Aged Cell

Synchrotron-based high-energy X-ray Compton scattering imaging is a promising technique for non-destructively and quantitatively investigating commercialized lithium rechargeable batteries. We apply the Compton scattering imaging technique to commercial coin-type lithium rechargeable cells (VL2020) to non-destructively identify the degradation mechanism of the cell. The correlations between the Compton scattering intensity and line-shape of the Compton scattering X-ray energy spectrum (S-parameter) obtained from this technique produce unique distributions that characterize the aged cell. These distributions in the aged cell indicate that the stable phase of the anode formed through the overvoltage charge–discharge cycle. This stable phase prevents lithium reactions, producing microbubbles with the decomposition of the electrolyte.

Synthesis and Charge-Discharge Characteristics of Polycrystalline LiNi1-xCoxO2 (0 ≤ x ≤ 0.5) as a Cathode Material for Lithium Rechargeable Batteries

2007 ◽  
Vol 280-283 ◽  
pp. 443-446 ◽  
Author(s):  
Xin Lu Li ◽  
Fei Yu Kang ◽  
Wan Ci Shen ◽  
Xiu Juan Shi
Keyword(s):  
Sol Gel ◽  
Hexagonal Lattice ◽  
Chelating Agent ◽  
Rechargeable Batteries ◽  
Potential Range ◽  
Electrochemical Characteristics ◽  
X Ray Diffraction ◽  
Soft Chemistry ◽  
Capacity Fading ◽  
Lithium Rechargeable Batteries

The synthesis and electrochemical characteristics of LiNi1-xCoxO2 (0 £ x £ 0.5) used as the promising cathode materials for lithium rechargeable batteries were investigated. The LiNi1-xCoxO2 was prepared by a soft chemistry route in which citric acid was used as the chelating agent to make the sol-gel precursor, then was calcined in oxygen atmosphere at the calcination temperature of 800°C for 12 h. Polycrystalline LiNi1-xCoxO2 possesses a hexagonal lattice of the α-NaFeO2 type characterized by using X-ray diffraction. The discharge capacity of LiNi0.8Co0.2O2 was 169.1 mAh/g with the efficiency of 90.5% in the first cycle and 162.1 mAh/g with only 4% capacity fading in the 10th cycle at 0.2 C rate over a potential range of 3.0-4.2 V.

Mesoporous MnCo2S4 nanosheet arrays as an efficient catalyst for Li–O2 batteries

Nanoscale ◽  
2018 ◽  
Vol 10 (33) ◽  
pp. 15588-15599 ◽  
Author(s):  
Zoya Sadighi ◽  
Jiapeng Liu ◽  
Francesco Ciucci ◽  
Jang-Kyo Kim
Keyword(s):  
Metal Oxides ◽  
High Performance ◽  
Rechargeable Batteries ◽  
Metal Sulfides ◽  
Efficient Catalyst ◽  
Nanosheet Arrays ◽  
Ternary Metal ◽  
Ternary Metal Sulfides

Ternary metal sulfides and ternary metal oxides have received much attention as potential electrodes for high performance rechargeable batteries.

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