Related Experiment Video
Updated: Nov 15, 2025
05:33
Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
Published on: August 12, 2013
22.0K
Well-Dispersed Garnet Crystallites for Applications in Solid-State Li-S Batteries
Chun-Hung Yu1,2, Chuan-Sheng Cho1,2, Chia-Chen Li1
1Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan.
ACS Applied Materials & Interfaces
|March 3, 2021
Summary
Dispersing garnet-type lithium lanthanum zirconium tantalum oxide (LLZTO) particles in ceramic tapes significantly enhances solid-state lithium-sulfur battery performance. This improvement boosts ionic conductivity, enabling stable cycling at high rates.
Area of Science:
- Materials Science
- Electrochemistry
- Solid-State Chemistry
Background:
- Solid-state lithium-sulfur (Li-S) batteries offer high theoretical energy density but face challenges with electrolyte conductivity and stability.
- Garnet-type electrolytes, such as Li6.4La3Zr1.4Ta0.6O12 (LLZTO), are promising for solid-state applications due to their non-flammability and potential for high ionic conductivity.
Purpose of the Study:
- To prepare a uniform ceramic tape of well-dispersed LLZTO particles for use as an electrolyte in solid-state Li-S batteries.
- To investigate the effect of particle dispersion on the properties of the ceramic tape and the performance of Li-S batteries.
Main Methods:
- Preparation of a ceramic tape with 70 wt % LLZTO particles using appropriate dispersants.
- Characterization of the ceramic tape's surface flatness, mechanical strength, and ionic conductivity.
- Fabrication and electrochemical testing of Li-S batteries utilizing dispersed and nondispersed LLZTO electrolytes.
Main Results:
- Achieved a uniform ceramic tape with well-dispersed LLZTO particles, exhibiting improved surface flatness and mechanical strength.
- Remarkably increased ionic conductivity from 10^-5 to 10^-3 S cm^-1 and doubled Li+ transport number from 0.35 to 0.70.
- Li-S batteries with dispersed LLZTO electrolytes demonstrated a capacity above 600 mA h g^-1 after 100 cycles and high-rate capability (1672 mA g^-1), outperforming batteries with nondispersed electrolytes.
Conclusions:
- Effective dispersion of LLZTO particles is critical for enhancing ceramic tape properties and solid-state Li-S battery performance.
- The optimized LLZTO electrolyte enables significantly improved ionic conductivity and Li+ transport, leading to superior cycling stability and rate capability.
- This work highlights the importance of electrolyte microstructure control for advancing solid-state battery technology.
Related Concept Videos
02:54Trends in Lattice Energy: Ion Size and Charge
25.8K
An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a measure of the strength of this attraction. The lattice energy (ΔHlattice) of an ionic compound is defined as the energy required to separate one mole of the solid into its component gaseous ions. For the ionic solid sodium chloride, the lattice energy is the enthalpy change of the process:
25.8K
03:12Batteries and Fuel Cells
29.8K
A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
29.8K