Raising lithium-ion storage capacity by order-to-disorder transformation in MAX-derived carbon anode during cycling

Tailored Electrosynthesis of Highly Porous Ti3SiC2-Derived Carbon Anodes with Excellent Lithium Storage Properties

“…The dramatic increase in demand for more powerful, efficient, and economical energy storage is driving the development of advanced Li-ion battery (LIB) systems that can be used in portable electronics, electric vehicles, and smart grids. , To construct a high-performance LIB, a suitable anode is highly demanded. − All kinds of two-dimensional (2D) materials are used frequently as anodes for LIBs, including graphite, , hexagonal boron nitride, , transition metal carbides (MXenes), − transition metal disulfide compounds, black phosphorus, , and porous carbon nanosheets. − Among these 2D anode materials, porous carbon nanosheets with large specific surface area and high electronic conductivity are considered promising candidates. 2D porous carbon can offer more active sites for Li + storage.…”

“…Carbide-derived carbon (CDC) as a new carbon material was prepared by removing metal atoms from the carbide precursors. CDC has recently received much attention for its controlled shape and adjustable pore size and thus has been regarded as a suitable carbon material for LIB anodes. − MAX, a layered transition metal carbide, has proven to be an ideal precursor for the preparation of 2D porous carbon by etching M and A atoms due to its unique atomic layer structure. − Yeon and his colleagues successfully synthesized Ti 3 SiC 2 –CDC materials with porous turbine structures as well as graphite structures by one-pot chlorination etching of Ti 3 SiC 2 at 1000 and 1200 °C . Zhu et al prepared defect-rich and high specific surface area porous carbon nanosheets from Ti 3 AlC 2 using I 2 /NaOH as an etching agent .…”

“…28−30 Yeon and his colleagues successfully synthesized Ti 3 SiC 2 −CDC materials with porous turbine structures as well as graphite structures by one-pot chlorination etching of Ti 3 SiC 2 at 1000 and 1200 °C. 19 Zhu et al prepared defectrich and high specific surface area porous carbon nanosheets from Ti 3 AlC 2 using I 2 /NaOH as an etching agent. 18 However, the synthetic methods described above all involve toxic and corrosive etchants, which inevitably result in operational risks and adverse environmental impacts.…”