Structural Modification of Interfaces for Sustainable High-Performance Batteries

Lithium-sulfur batteries (LSBs) are considered a particularly promising powerful and sustainable storage technology, as they offer high theoretical energy density, use cost-effective and environmentally friendly materials. Despite their potential, major technical challenges remain for practical implementation. This cumulative dissertation shows how structural interface modifications can help to overcome these difficulties and enable multifunctional battery components. A key aspect is the Nanoscale Sculpturing process. The formed 3D surface enables mechanical interlocking between the current collector and the active layer, allows higher loading densities, and facilitates water-based cathode systems. On this basis, environmentally friendly binders can be used which, despite their advantageous properties, have received little attention due to their low adhesive forces yet. Besides cathode engineering, the dissertation also focuses on the interactions of dissolved sulfur species with porous silicon anodes and the influence of polysulfides in anode-free systems. The studies further show how stability and lifetime can be improved and transferred to post-lithium systems. As battery demands, especially in mobility, continue to increase, the charging rate capability of LSBs is also addressed. Strategies for fast-charging LSBs are developed through component-specific and holistic analyses. In this way, this work establishes interface-structuring as a strategy for sustainable battery alternatives combining high performance with environmental compatibility and lower costs.

Level thesis:degree_level

thesis.doctoral

Grantor dc:publisher

Christian-Albrechts-Universität zu Kiel

Year

2026

Author dc:creator

• Offermann, Klaus Jakob

Contributors dc:contributor

• Adelung, Rainer
• Faupel, Franz

• lithium-sulfur battery
• cathode engineering
• current collector modification
• nanoscale sculpturing
• eco-friendly binder
• porous silicon anode
• solid electrolyte interphase
• anode-free battery
• metal plating
• fast-charging battery

Repository record source_url

https://macau.uni-kiel.de/receive/macau_mods_00008077

OAI identifier oai:identifier

oai:macau.uni-kiel.de:macau_mods_00008077