Controlled synthesis of concentration gradient LiNi0.84Co0.10Mn0.04Al0.02O1.90F0.10 with improved electrochemical properties in Li-ion batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (63) ◽  
pp. 58173-58181 ◽  
Author(s):  
Weihua Chen ◽  
Yanyang Li ◽  
Juanjuan Zhao ◽  
Feifei Yang ◽  
Jianmin Zhang ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Electrochemical Properties ◽  
Concentration Gradient ◽  
Controlled Synthesis ◽  
Li Ion Batteries ◽  
Exchange Method ◽  
Gradient Materials ◽  
Li Ion ◽  
Ion Exchange Method

Ion exchange method is adopted to design the concentration gradient materials for Li-ion batteries.

Preparation of (La, Li)TiO3 Dense Ceramics using Sol-Gel and Ion-Exchange Process

2002 ◽  
Vol 756 ◽  
Author(s):  
Seiichi Suda ◽  
Hiroyuki Ishii ◽  
Kiyoshi Kanamura
Keyword(s):  
Ion Exchange ◽  
Exchange Process ◽  
Sol Gel ◽  
Ionic Conductivities ◽  
Exchange Method ◽  
Ion Exchange Process ◽  
Li Ion ◽  
Lithium Ionic Conductor ◽  
Ion Exchange Method ◽  
Water Ratio

ABSTRACTLithium ionic conductor, (La, Li)TiO3, has synthesized with La/Li-TiO2 amorphous spheres that were obtained by sol-gel and ion-exchange method, and succeeding La3+/Li+ partial ion exchange. In this work, La /Li ion exchange conditions were mainly investigated in order to obtain dense (La, Li)TiO3 ceramics that have highly ionic conductivities. La +/Li+ ion exchange behavior was changed with ion-exchange solutions, and the Li/Ti ratio was increased with an increase in ethanol/water ratio in the solvent used for La3+/Li+ partial ion exchange. The use of an adequate ethanol/water ratio resulted in La/Li-TiO2 amorphous spheres with the composition of La/Li/Ti=0.54/0.34/1.00, and sintering of the spheres at 1200°C for 5 h in air led to dense (La, Li)TiO3 ceramics which exhibit the conductivity of 4.0 × 10-3 S cm-1 at 25°C.

Structural Reinvestigation of Alkali Hexatitanate

2011 ◽  
Vol 170 ◽  
pp. 208-212
Author(s):  
Kunimitsu Kataoka ◽  
Norihito Kijima ◽  
Hiroshi Hayakawa ◽  
Junji Akimoto
Keyword(s):  
Ion Exchange ◽  
Single Crystal ◽  
Molten Salt ◽  
Type Structure ◽  
Exchange Method ◽  
Space Group ◽  
X Ray ◽  
Structure Space ◽  
Li Ion ◽  
Ion Exchange Method

Na1.614Li0.386Ti6O13 Single crystal was synthesized by a Li+ ion-exchange method from Na2Ti6O13 single crystal in a molten salt of LiNO3. The obtained Na1.614Li0.386Ti6O13 single-crystal is colorless and has the shape of a rod. Na1.614Li0.386Ti6O13 crystallizes in the monoclinic tunnel type structure, space group C2/m, and lattice parameters a = 15.144(2) Å, b = 3.7492(5) Å, c = 9.162(2) Å and β = 99.0131(9)º. The structure was determined by a single-crystal X-ray study and refined to the conventional values of R = 0.0247 and wR = 0.0451 for 969 independent observed reflections.

A highly efficient Fe-Ni-S/NF hybrid electrode for promoting oxygen evolution performance

2021 ◽  
Author(s):  
YuYun Chen ◽  
Yang Xu ◽  
Shuai Niu ◽  
Jun Yan ◽  
Ye-Yu Wu ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Oxygen Evolution ◽  
Hierarchical Structure ◽  
Alkaline Solution ◽  
Exchange Method ◽  
Highly Efficient ◽  
Ion Exchange Method

In this study, a Fe-Ni-S/NF hybrid electrode with hierarchical structure was fabricated via a simple hydrothermal and ion exchange method, which exhibits remarkable OER performance in alkaline solution with an...

Controlled synthesis of Li3VO4/C nanofibers as anode for Li-ion batteries

Ionics ◽  
2021 ◽  
Author(s):  
Daobo Li ◽  
Zhen Xu ◽  
Dongmei Zhang ◽  
Shibing Ni
Keyword(s):  
Controlled Synthesis ◽  
Li Ion Batteries ◽  
Li Ion
Sign in / Sign up

Export Citation Format

Share Document