Over the past few years we have shown that chemically exfoliated 2D transition metal dichalcogenides (TMDs) are excellent for electrochemical applications such as energy storage and catalysis. For example, electrodes from restacked TMDs exhibit excellent volumetric capacitance along with high energy and power densities in energy storage devices. In this presentation, we will show that the high capacitance can be used for realizing ultra-strong electrochemical actuators. In addition to energy storage and actuation, we will describe new results on addressing key challenges involved in optimizing catalytic performance in TMDs. In particular, we will describe new strategies for optimizing the Tafel slope and current densities of various catalytic reactions using TMDs as catalysts. I will summarize the recent developments in 2D materials for electrochemistry, including our recent work on using reduced graphene oxide for oxygen reduction reaction, and discuss some challenges.