scholarly journals Effect of Li plating during formation of lithium ion batteries on their cycling performance and thermal safety

2021 ◽  
Vol 484 ◽  
pp. 229306
Author(s):  
Patrick Münster ◽  
Marcel Diehl ◽  
Joop Enno Frerichs ◽  
Markus Börner ◽  
Michael Ryan Hansen ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Thermal Safety

scholarly journals Dealloying-Derived Nanoporous Cu6Sn5 Alloy as Stable Anode Materials for Lithium-Ion Batteries

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4348
Author(s):  
Chi Zhang ◽  
Zheng Wang ◽  
Yu Cui ◽  
Xuyao Niu ◽  
Mei Chen ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Coulombic Efficiency ◽  
Lithium Ion ◽  
Specific Area ◽  
Cycling Performance ◽  
Ex Situ ◽  
Li Ion ◽  
Xrd Patterns ◽  
Cu6sn5 Alloy

The volume expansion during Li ion insertion/extraction remains an obstacle for the application of Sn-based anode in lithium ion-batteries. Herein, the nanoporous (np) Cu6Sn5 alloy and Cu6Sn5/Sn composite were applied as a lithium-ion battery anode. The as-dealloyed np-Cu6Sn5 has an ultrafine ligament size of 40 nm and a high BET-specific area of 15.9 m2 g−1. The anode shows an initial discharge capacity as high as 1200 mA h g−1, and it remains a capacity of higher than 600 mA h g−1 for the initial five cycles at 0.1 A g−1. After 100 cycles, the anode maintains a stable capacity higher than 200 mA h g−1 for at least 350 cycles, with outstanding Coulombic efficiency. The ex situ XRD patterns reveal the reverse phase transformation between Cu6Sn5 and Li2CuSn. The Cu6Sn5/Sn composite presents a similar cycling performance with a slightly inferior rate performance compared to np-Cu6Sn5. The study demonstrates that dealloyed nanoporous Cu6Sn5 alloy could be a promising candidate for lithium-ion batteries.

Hierarchically porous-structured ZnxCo1−xS@C–CNT nanocomposites with high-rate cycling performance for lithium-ion batteries

2017 ◽  
Vol 5 (44) ◽  
pp. 23221-23227 ◽  
Author(s):  
Hao Wang ◽  
Ziliang Chen ◽  
Yang Liu ◽  
Hongbin Xu ◽  
Licheng Cao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Lithium Ion Batteries ◽  
Porous Carbon ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Hybrid Nanocomposites ◽  
High Rate ◽  
Lithium Storage ◽  
Strongly Coupled ◽  
Storage Performance

Hybrid nanocomposites constructed from starfish-like ZnxCo1−xS rooted in porous carbon and strongly coupled carbon nanotubes have been rationally designed and they exhibit excellent lithium-storage performance.

Effect of overcharge on the electrochemical and thermal safety behaviors of LiNi0.5Mn0.3Co0.2O2/graphite lithium-ion batteries

2022 ◽  
Vol 46 ◽  
pp. 103829
Author(s):  
Song Xie ◽  
Yize Gong ◽  
Xianke Ping ◽  
Jian Sun ◽  
Xiantao Chen ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Safety Behaviors ◽  
Thermal Safety

Building sponge-like robust architectures of CNT–graphene–Si composites with enhanced rate and cycling performance for lithium-ion batteries

2015 ◽  
Vol 3 (7) ◽  
pp. 3962-3967 ◽  
Author(s):  
Xiaolei Wang ◽  
Ge Li ◽  
Fathy M. Hassan ◽  
Matthew Li ◽  
Kun Feng ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
High Performance ◽  
Rate Capability ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Cycling Stability ◽  
Great Promise ◽  
Practical Applications ◽  
Excellent Cycling Stability

High-performance robust CNT–graphene–Si composites are designed as anode materials with enhanced rate capability and excellent cycling stability for lithium-ion batteries. Such an improvement is mainly attributed to the robust sponge-like architecture, which holds great promise in future practical 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

Mild solution synthesis of graphene loaded with LiFePO4–C nanoplatelets for high performance lithium ion batteries

2015 ◽  
Vol 39 (2) ◽  
pp. 1094-1100 ◽  
Author(s):  
Muchun Liu ◽  
Yan Zhao ◽  
Sen Gao ◽  
Yan Wang ◽  
Yuexin Duan ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Mild Solution ◽  
High Performance ◽  
Solution Treatment ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Solution Synthesis ◽  
Microwave Assisted

Microwave-assisted solution treatment provides a simple and safe synthesis for nanomaterials and nanocomposites. LiFePO4–graphene–C nanoplatelets show excellent 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.

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