DIRECTED-ASSEMBLY OF 2D TRANSITION METAL CARBIDES FOR ELECTROCHEMICAL ENERGY STORAGE AND WEARABLE ELECTROMAGNETIC DEVICES

Abstract

Reversible storage and release of clean energy plays important role in multiple aspects of human livings. Moreover, the emerging Internet of Things and wearable technologies present high expectations on energy storage technology. Unfortunately, the current commercial lithium-ion batteries cannot satisfy the continued pursuits on energy/power densities, operation safety, adaptability, flexibility/stretchability, lightweight, etc. To address those challenges, 2D material transition metal carbides (MXenes) with versatile compositions stand out for their unique combination of metallic conductivity and tunable surface chemistries, which have shown promising properties in terms of energy storage and wearable technologies. By assembling 2D MXene nanosheets via different strategies, this thesis aims to make efforts to solve the fundamental and engineering issues in high-energy-density metal batteries, stretchable electrochemical devices, and wearable electromagnetic electronics, and thus improve their electrochemical and electromagnetic performance, as well as mechanical stability.