Recent Advances in the Synthesis and Energy Applications of 2D MXenes

The state-of-the-art achievements, challenges, and opportunities of MXene materials and their derivatives are discussed, including synthesis strategies and electrochemical energy-storage applications in supercapacitors, lithium-ion batteries, and beyond lithium-ion batteries. The fundamental science behind the challenges and potential solutions toward a long calendar life and a high energy-power density is discussed in detail.