Related Experiment Video
Updated: Jul 25, 2026
14:58
Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
Published on: June 3, 2015
15.4K
Highly Stable Silicon Anodes Enabled by Sub-10 nm Pores and Particles.
Pankaj Ghildiyal1, Brandon Wagner2, Jianjun Chen3
1SiLi-ion Inc., Multidisciplinary Research Building, 3401 Watkins Dr, Riverside, CA, 92507, USA.
Small (Weinheim an Der Bergstrasse, Germany)
|September 18, 2025
Summary
Researchers developed a novel silicon anode structure using small particles for advanced lithium-ion batteries. This design enhances stability and energy density while minimizing capacity loss during cycling.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Silicon anodes promise high energy density for next-generation lithium-ion batteries.
- Severe volume expansion and lithium inventory loss in silicon limit its practical application.
Purpose of the Study:
- To develop a silicon anode structure that mitigates volume expansion and lithium loss.
- To achieve high tap density and good processability for silicon anodes.
Main Methods:
- A bottom-up assembly process using sub-10 nm silicon particles produced via low-temperature plasma.
- Creation of micron-scale superstructures with uniformly dispersed sub-10 nm pores.
Main Results:
- The novel structure effectively addresses volume expansion and lithium inventory issues.
- Achieved tap densities exceeding commercial graphite (≈1.2 g cm⁻³).
- Silicon-dominant anodes demonstrated remarkable stability in full pouch cells, retaining ≈80% capacity over 400 cycles without pre-lithiation or graphite blending.
Conclusions:
- The developed silicon anode structure offers a promising solution for high-energy, stable lithium-ion batteries.
- This approach overcomes key limitations of silicon nanomaterials for practical battery applications.
