M.Sc. Thesis - SIB Cell Swelling Characterization

M.Sc. Thesis - SIB Cell Swelling Characterization


Scania is one of the leading European manufacturers of heavy-duty vehicles. The 2025 global sales were 87 600 trucks and 6 500 buses, with 41 % of the total outside Europe. When it comes to global warming, we already contribute to the necessary reduction of fossil CO2 emissions with a focus on battery-electric trucks and buses.

Introduction



Thesis work is an excellent way to get closer to Scania and build relationships for the future. Many of today's employees began their Scania career with their degree project.

Background

Sodium-ion batteries (SIBs) have emerged as a promising complement to lithium-ion batteries (LIBs) due to their potential cost advantages, resilient raw material supply, and favorable safety characteristics. While significant progress has been made in cell development, their suitability for commercial vehicle applications remains largely unexplored. A deeper understanding of the electrochemical and mechanical behavior of SIBs is needed to assess their potential and enable the next generation of battery systems for heavy-duty electric vehicles.

Task

In this M.Sc. thesis project (30 hp) for one student, the swelling behavior of sodium-ion batteries (SIBs) and its implications for future battery electric trucks (BET) shall be investigated.

The task is to:

• review reversible and irreversible swelling mechanisms of representative SIB, as well as the characterization methods;
• experimentally characterize cell swelling at different states of charge (SOC) and over cycling using CT scan and alternative measurements;
• benchmark the swelling behavior and mechanical deformation of SIBs against representative high-nickel lithium-ion batteries (LIBs);
• derive engineering requirements and recommendations for simplified mechanical integration, including cell compression and mechanical designs.

To facilitate and speed up the work, skilled supervision and a license for ChatGPT Enterprise will be available.

Education/program/focus



Studies: (Electro)chemistry, physics, electrical engineering, energy engineering

Is a must: Relevant courses on battery technology.

Is a bonus: Previous work on battery swelling behavior.

Number of students: One.

Start of work: 15 Feb 2027.

Estimated duration: 20 weeks

Language of work: English

Location of work: Södertälje, Stockholm County, Sweden

Contact persons and supervisors

Yang YANG, Advanced Engineering in Energy Storage

Tel. 0046 8 553 - 501 71

yang.yang@se.traton.com

Aamer SIDDIQUI, Material Technology

aamer.siddiqui@scania.com

Aishwarya SRINATH, Material Technology

aishwarya.srinath@scania.com

Application:



Your application must include a CV, personal letter and transcript of grades.

A background check might be conducted for this position. We are conducting interviews continuously and may close the recruitment earlier than the date specified.

Publication date from - to:

2026-11-06 to 2026-11-20.

Requisition ID: 34798

Number of Openings: 1.0

Part-time / Full-time: Full-time

Permanent / Temporary: Temporary

Country / Region: SE

Location(s):
Södertälje, SE, 151 38

Required Travel: 0%

Workplace: Hybrid