Enhancing the Cycling Performance of High Voltage (4.5 V) Li/LiNi0.5Mn0.3Co0.2O2Cell by Tailoring Sulfur-Derivative Cathode Passivation Film

2017 ◽  
Vol 164 (13) ◽  
pp. A2914-A2921 ◽  
Author(s):  
Pengbo Hong ◽  
Mengqing Xu ◽  
Bo Liao ◽  
Yingna Wu ◽  
Nini Lin ◽  
...  
Keyword(s):  
High Voltage ◽  
Cycling Performance ◽  
Passivation Film ◽  
Cathode Passivation

Enhancing the High-Voltage Cycling Performance of LiNi1/3Co1/3Mn1/3O2/Graphite Batteries Using Alkyl 3,3,3-Trifluoropropanoate as an Electrolyte Additive

2017 ◽  
Vol 9 (22) ◽  
pp. 18758-18765 ◽  
Author(s):  
Xiangzhen Zheng ◽  
Tao Huang ◽  
Ying Pan ◽  
Wenguo Wang ◽  
Guihuang Fang ◽  
...  
Keyword(s):  
High Voltage ◽  
Cycling Performance ◽  
Electrolyte Additive

scholarly journals A stable cathode-solid electrolyte composite for high-voltage, long-cycle-life solid-state sodium-ion batteries

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Erik A. Wu ◽  
Swastika Banerjee ◽  
Hanmei Tang ◽  
Peter M. Richardson ◽  
Jean-Marie Doux ◽  
...  
Keyword(s):  
Solid State ◽  
High Voltage ◽  
Coulombic Efficiency ◽  
Composite Cathode ◽  
Cycling Performance ◽  
Sodium Ion ◽  
Great Promise ◽  
Sodium Ion Batteries ◽  
Ion Conductor ◽  
Oxide Cathodes

AbstractRechargeable solid-state sodium-ion batteries (SSSBs) hold great promise for safer and more energy-dense energy storage. However, the poor electrochemical stability between current sulfide-based solid electrolytes and high-voltage oxide cathodes has limited their long-term cycling performance and practicality. Here, we report the discovery of the ion conductor Na3-xY1-xZrxCl6 (NYZC) that is both electrochemically stable (up to 3.8 V vs. Na/Na+) and chemically compatible with oxide cathodes. Its high ionic conductivity of 6.6 × 10−5 S cm−1 at ambient temperature, several orders of magnitude higher than oxide coatings, is attributed to abundant Na vacancies and cooperative MCl6 rotation, resulting in an extremely low interfacial impedance. A SSSB comprising a NaCrO2 + NYZC composite cathode, Na3PS4 electrolyte, and Na-Sn anode exhibits an exceptional first-cycle Coulombic efficiency of 97.1% at room temperature and can cycle over 1000 cycles with 89.3% capacity retention at 40 °C. These findings highlight the immense potential of halides for SSSB applications.

Electrochemical and cycling performance of neodymium (Nd3+) doped LiNiPO4 cathode materials for high voltage lithium-ion batteries

2019 ◽  
Vol 237 ◽  
pp. 224-227 ◽  
Author(s):  
S. Karthickprabhu ◽  
Dhanasekaran Vikraman ◽  
A. Kathalingam ◽  
K. Prasanna ◽  
Hyun-Seok Kim ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
High Voltage ◽  
Cathode Materials ◽  
Lithium Ion ◽  
Cycling Performance

scholarly journals LiCoO2/Graphite Cells with Localized High Concentration Carbonate Electrolytes for Higher Energy Density

Liquids ◽  
2021 ◽  
Vol 1 (1) ◽  
pp. 60-74
Author(s):  
Xin Ma ◽  
Peng Zhang ◽  
Huajun Zhao ◽  
Qingrong Wang ◽  
Guangzhao Zhang ◽  
...  
Keyword(s):  
Energy Density ◽  
Lithium Ion Batteries ◽  
High Voltage ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Porous Electrodes ◽  
Dramatic Improvement ◽  
Effective Strategy ◽  
High Concentration ◽  
Mixed Carbonate

Widening the working voltage of lithium-ion batteries is considered as an effective strategy to improve their energy density. However, the decomposition of conventional aprotic electrolytes at high voltage greatly impedes the success until the presence of high concentration electrolytes (HCEs) and the resultant localized HCEs (LHCEs). The unique solvated structure of HCEs/LHCEs endows the involved solvent with enhanced endurance toward high voltage while the LHCEs can simultaneously possess the decent viscosity for sufficient wettability to porous electrodes and separator. Nowadays, most LHCEs use LiFSI/LiTFSI as the salts and β-hydrofluoroethers as the counter solvents due to their good compatibility, yet the LHCE formula of cheap LiPF6 and high antioxidant α-hydrofluoroethers is seldom investigated. Here, we report a unique formula with 3 mol L−1 LiPF6 in mixed carbonate solvents and a counter solvent α-substituted fluorine compound (1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropylether). Compared to a conventional electrolyte, this formula enables dramatic improvement in the cycling performance of LiCoO2//graphite cells from approximately 150 cycles to 1000 cycles within the range of 2.9 to 4.5 V at 0.5 C. This work provides a new choice and scope to design functional LHCEs for high voltage systems.

Improving the Cycling Performance of High-Voltage NMC111 || Graphite Lithium Ion Cells By an Effective Urea-Based Electrolyte Additive

2019 ◽  
Vol 166 (13) ◽  
pp. A2910-A2920 ◽  
Author(s):  
Jan-Patrick Schmiegel ◽  
Xin Qi ◽  
Sven Klein ◽  
Volker Winkler ◽  
Marco Evertz ◽  
...  
Keyword(s):  
High Voltage ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Electrolyte Additive ◽  
Lithium Ion Cells

[email protected] as high-voltage lithium-ion battery cathode materials with improved cycling performance and thermal stability

2019 ◽  
Vol 327 ◽  
pp. 135018 ◽  
Author(s):  
Peipei Pang ◽  
Zheng Wang ◽  
Xinxin Tan ◽  
Yaoming Deng ◽  
Junmin Nan ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Lithium Ion Battery ◽  
High Voltage ◽  
Cathode Materials ◽  
Lithium Ion ◽  
Cycling Performance

Generation of Cathode Passivation Films via Oxidation of Lithium Bis(oxalato) Borate on High Voltage Spinel (LiNi0.5Mn1.5O4)

2014 ◽  
Vol 118 (14) ◽  
pp. 7363-7368 ◽  
Author(s):  
Mengqing Xu ◽  
Nikolaos Tsiouvaras ◽  
Arnd Garsuch ◽  
Hubert A. Gasteiger ◽  
Brett L. Lucht
Keyword(s):  
High Voltage ◽  
Cathode Passivation
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