Sunday, August 10, 2025
Science
No Result
View All Result
  • Login
  • HOME
  • SCIENCE NEWS
  • CONTACT US
  • HOME
  • SCIENCE NEWS
  • CONTACT US
No Result
View All Result
Scienmag
No Result
View All Result
Home Science News Chemistry

Investigating failure mechanisms of solid electrolyte interphase in silicon particles

May 22, 2024
in Chemistry
Reading Time: 3 mins read
0
Effect of three factors on SEI stability
66
SHARES
600
VIEWS
Share on FacebookShare on Twitter
ADVERTISEMENT
ADVERTISEMENT

Lithium-ion batteries are widely used in new energy vehicles due to their low self-discharge rate and long cycle life. Currently, the anode material of commercial lithium-ion batteries mainly adopts graphite, with a theoretical capacity of only 372 mAh g-1 — which has gradually failed to meet the increasing demand for energy density.

Effect of three factors on SEI stability

Credit: Junjie Ding, Xueyan Li, Lili Gong, Peng Tan.

Lithium-ion batteries are widely used in new energy vehicles due to their low self-discharge rate and long cycle life. Currently, the anode material of commercial lithium-ion batteries mainly adopts graphite, with a theoretical capacity of only 372 mAh g-1 — which has gradually failed to meet the increasing demand for energy density.

Silicon has been widely studied by virtue of its high theoretical capacity of 4200 mAh g-1. However, silicon produces volume changes of up to 300% during lithiation and delithiation, and the ensuing mechanical degradation and capacity loss hinder applications. To reduce the adverse effects caused by mechanical deformation, silicon structure optimization has been intensively investigated and has effectively improved the cycling performance. Nonetheless, the long-term development of silicon-based energy storage materials requires not only stable electrodes, but also a stable interphase between electrodes and electrolytes. Organic electrolytes, which are widely used in conventional lithium-ion batteries, reduce on the anode surface to form a thin film called solid electrolyte interphase (SEI). Unfortunately, drastic volume changes in silicon can lead to the accumulation of stress and destruction of the SEI, which will subsequently regenerate on the exposed anode surface, greatly increasing irreversible lithium and electrolyte consumption and causing capacity degradation. Therefore, it is particularly important to stabilize the mechanical properties of SEI on silicon materials.

To that end, the Advanced Power Research Group led by Peng Tan of the University of Science and Technology of China (USTC) has initiated a modeling study on the mechanical stability of SEI from three perspectives: electrode material properties, SEI geometrical properties, and battery operating conditions. The modelling was based on the continuum mechanics model, coupled with the electrochemical mass transfer process.

The team quantitatively analyzed the effects of three factors on SEI stability and battery capacity utilization by building a model of individual electrode particles. They found out that in order to improve SEI stability, spherical silicons with smaller particle sizes should be used as much as possible in the design of electrode materials. In terms of SEI geometry, it is particularly important to artificially construct SEI with a uniform structure, while when it comes to cell operation, high multiplicity will bring greater capacity utilization but is not conducive to SEI stability.

The findings, published in the KeAi journal Advanced Powder Materials, demonstrate SEI’s high-stability design and operation strategy and will guide the development of silicon-based energy storage batteries with high cycling stability.

###

Contact the author: Peng Tan, Department of Thermal Science and Energy Engineering, University of Science and Technology of China (USTC), Hefei, China, pengtan@ustc.edu.cn

The publisher KeAi was established by Elsevier and China Science Publishing & Media Ltd to unfold quality research globally. In 2013, our focus shifted to open access publishing. We now proudly publish more than 100 world-class, open access, English language journals, spanning all scientific disciplines. Many of these are titles we publish in partnership with prestigious societies and academic institutions, such as the National Natural Science Foundation of China (NSFC).



Journal

Advanced Powder Materials

DOI

10.1016/j.apmate.2024.100200

Method of Research

Computational simulation/modeling

Subject of Research

Not applicable

Article Title

Investigating the failure mechanism of solid electrolyte interphase in silicon particles from an electrochemical-mechanical coupling perspective

COI Statement

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Share26Tweet17
Previous Post

Pedestrians may be twice as likely to be hit by electric/hybrid cars as petrol/diesel ones

Next Post

Reduce the risk of electric vehicle fires by analyzing nanostructures!

Related Posts

blank
Chemistry

Key Biophysical Rules for Mini-Protein Endosomal Escape

August 10, 2025
blank
Chemistry

Uranium Complex Converts Dinitrogen to Ammonia Catalytically

August 10, 2025
blank
Chemistry

Al–Salen Catalyst Powers Enantioselective Photocyclization

August 9, 2025
blank
Chemistry

Bacterial Enzyme Powers ATP-Driven Protein C-Terminus Modification

August 9, 2025
blank
Chemistry

Machine-Learned Model Maps Protein Landscapes Efficiently

August 9, 2025
blank
Chemistry

High-Definition Simulations Reveal New Class of Protein Misfolding

August 8, 2025
Next Post

Reduce the risk of electric vehicle fires by analyzing nanostructures!

  • Mothers who receive childcare support from maternal grandparents show more parental warmth, finds NTU Singapore study

    Mothers who receive childcare support from maternal grandparents show more parental warmth, finds NTU Singapore study

    27531 shares
    Share 11009 Tweet 6881
  • University of Seville Breaks 120-Year-Old Mystery, Revises a Key Einstein Concept

    945 shares
    Share 378 Tweet 236
  • Bee body mass, pathogens and local climate influence heat tolerance

    641 shares
    Share 256 Tweet 160
  • Researchers record first-ever images and data of a shark experiencing a boat strike

    507 shares
    Share 203 Tweet 127
  • Warm seawater speeding up melting of ‘Doomsday Glacier,’ scientists warn

    310 shares
    Share 124 Tweet 78
Science

Embark on a thrilling journey of discovery with Scienmag.com—your ultimate source for cutting-edge breakthroughs. Immerse yourself in a world where curiosity knows no limits and tomorrow’s possibilities become today’s reality!

RECENT NEWS

  • Black Hole-Neutron Star Binary Merges: Cosmic Catastrophe
  • Glueball Calculation’s Apparent Convergence: A New Light

  • Key Biophysical Rules for Mini-Protein Endosomal Escape
  • COVID-19 Survivors’ RICU Stories: Southern Iran Study

Categories

  • Agriculture
  • Anthropology
  • Archaeology
  • Athmospheric
  • Biology
  • Bussines
  • Cancer
  • Chemistry
  • Climate
  • Earth Science
  • Marine
  • Mathematics
  • Medicine
  • Pediatry
  • Policy
  • Psychology & Psychiatry
  • Science Education
  • Social Science
  • Space
  • Technology and Engineering

Subscribe to Blog via Email

Success! An email was just sent to confirm your subscription. Please find the email now and click 'Confirm Follow' to start subscribing.

Join 4,860 other subscribers

© 2025 Scienmag - Science Magazine

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In
No Result
View All Result
  • HOME
  • SCIENCE NEWS
  • CONTACT US

© 2025 Scienmag - Science Magazine