Multi-ionic lithium salts increase lithium ion transference numbers in ionic liquid gel separators

2016 ◽  
Vol 4 (37) ◽  
pp. 14380-14391 ◽  
Author(s):  
Parameswara Rao Chinnam ◽  
Vijay Chatare ◽  
Sumanth Chereddy ◽  
Ramya Mantravadi ◽  
Michael Gau ◽  
...  

Solid ion-gel separators for lithium or lithium ion batteries have been prepared with high lithium ion transference numbers (tLi+ = 0.36), high room temperature ionic conductivities (σ → 10−3 S cm−1), and moduli in the MPa range.

1999 ◽  
Vol 575 ◽  
Author(s):  
M.W. Riley ◽  
P.S. Fedkiw ◽  
S.A. Khan

ABSTRACTNanocomposite electrolytes based on lithium hectorite (LiHect) clay dispersed in highdielectric organic solvents such as ethylene carbonate (EC) and propylene carbonate (PC) are shown to exhibit room-temperature conductivities exceeding 10−4 S/cm. The LiHect-based composites reveal lithium ion transference numbers of ∼0.8, as measured by the steady-state current method. In addition, dynamic rheological techniques show this system to be mechanically stable with elastic modulus G' exceeding 107 dynes/cm 2 and yield stress exceeding 104 dynes/cm2.


2013 ◽  
Vol 652-654 ◽  
pp. 896-900
Author(s):  
Tao Yu ◽  
Hong Ming Zhang ◽  
Xiao Li Xu ◽  
Xiao Ling Cui ◽  
Li Ping Mao

Lithium bis(oxalato)borate (LiBOB) and lithium oxalyldifluroborate (LiODFB) are promising boron-based lithium salts for lithium ion batteries. Advantages, disadvantages, and recent developments of each lithium salt were introduced respectively in this article. In addition, ionic conductivities and compatibilities with electrode materials were emphatically reviewed.


RSC Advances ◽  
2014 ◽  
Vol 4 (104) ◽  
pp. 60371-60375 ◽  
Author(s):  
Jian Hao ◽  
Xiaoxu Liu ◽  
Na Li ◽  
Xusong Liu ◽  
Xiaoxuan Ma ◽  
...  

A simple process involving the electrophoretic deposition of acetylene black onto Ni foam and the ionic liquid electrodeposition of Ge has been used to synthesize a 3D Ge–acetylene black–Ni foam electrode material at room temperature.


Metals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1091
Author(s):  
Eva Gerold ◽  
Stefan Luidold ◽  
Helmut Antrekowitsch

The consumption of lithium has increased dramatically in recent years. This can be primarily attributed to its use in lithium-ion batteries for the operation of hybrid and electric vehicles. Due to its specific properties, lithium will also continue to be an indispensable key component for rechargeable batteries in the next decades. An average lithium-ion battery contains 5–7% of lithium. These values indicate that used rechargeable batteries are a high-quality raw material for lithium recovery. Currently, the feasibility and reasonability of the hydrometallurgical recycling of lithium from spent lithium-ion batteries is still a field of research. This work is intended to compare the classic method of the precipitation of lithium from synthetic and real pregnant leaching liquors gained from spent lithium-ion batteries with sodium carbonate (state of the art) with alternative precipitation agents such as sodium phosphate and potassium phosphate. Furthermore, the correlation of the obtained product to the used type of phosphate is comprised. In addition, the influence of the process temperature (room temperature to boiling point), as well as the stoichiometric factor of the precipitant, is investigated in order to finally enable a statement about an efficient process, its parameter and the main dependencies.


2020 ◽  
Vol 479 ◽  
pp. 228791 ◽  
Author(s):  
S. Brutti ◽  
E. Simonetti ◽  
M. De Francesco ◽  
A. Sarra ◽  
A. Paolone ◽  
...  

2017 ◽  
Vol 121 (33) ◽  
pp. 17756-17763 ◽  
Author(s):  
Fei Lu ◽  
Xinpei Gao ◽  
Aoli Wu ◽  
Na Sun ◽  
Lijuan Shi ◽  
...  

RSC Advances ◽  
2017 ◽  
Vol 7 (42) ◽  
pp. 26120-26124 ◽  
Author(s):  
Chunde Wang ◽  
Yinyin Qian ◽  
Jing Yang ◽  
Shiqi Xing ◽  
Xu Ding ◽  
...  

We demonstrate that ternary NiCoP nanoparticles can be self-assembled on graphene at room temperature by a solution-phase method and our electrode materials exhibit a high performance for LIBs and supercapacitors.


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