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- All Subjects: Sustainability
- All Subjects: Electric Vehicles
Lithium ion batteries are quintessential components of modern life. They are used to power smart devices — phones, tablets, laptops, and are rapidly becoming major elements in the automotive industry. Demand projections for lithium are skyrocketing with production struggling to keep up pace. This drive is due mostly to the rapid adoption of electric vehicles; sales of electric vehicles in 2020 are more than double what they were only a year prior. With such staggering growth it is important to understand how lithium is sourced and what that means for the environment. Will production even be capable of meeting the demand as more industries make use of this valuable element? How will the environmental impact of lithium affect growth? This thesis attempts to answer these questions as the world looks to a decade of rapid growth for lithium ion batteries.
Lignin is an energy dense polymer that forms the secondary layer within a plants cell wall. Within the cell wall, lignin acts as a matrix material, providing structural integrity to the plant. This polymer is often a byproduct from harvesting cellulose and has traditionally been used in resins, insulation, and adhesives. Recent research has indicated that lignin’s hierarchical structure may offer advantage in dissipating fracture energy while its fibrous composite arrangement prevents crack growth. Because of lignin’s unique chemical characteristics, different formulations and combinations with resins and bioplastics using lignin has started to make way for a new cost-effective and non-polluting alternative for the current petroleum-based plastics used globally. The goal of the following project was to develop a material that could show resilience in replacing the petroleum-based plastic used in small format items whilst also demonstrating high efficacy in biodegradation.