In this study, we developed a scalable microwave-assisted HF etching method to synthesize Ti₃C₂Tx MXene, addressing the increasing demand for advanced materials in Li-ion and Na-ion batteries. Unlike conventional synthesis approaches, which require several hours, our microwave-assisted method dramatically reduces the synthesis time to just a few seconds, making it a highly efficient and practical technique. This innovation could revolutionize the production of MXene for energy applications. Additionally, the research provides an in-depth examination of the surface and interface chemistry of MXene materials. By focusing on the controlled etching process, we reveal how it modifies interplanar spacing, which directly impacts the electrochemical properties of the material. These changes contribute to enhanced performance, including improved ion transport and storage capacity. This work underscores the potential of our method in producing high-performance MXenes while offering valuable insights into the relationship between etching parameters and material properties. The findings highlight the significant advancements in synthesis efficiency and performance optimization, paving the way for the widespread adoption of MXene materials in next-generation energy storage solutions.