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Cation Intercalation and High Volumetric Capacitance of Two-Dimensional Titanium Carbide

2013; American Association for the Advancement of Science; Volume: 341; Issue: 6153 Linguagem: Inglês

10.1126/science.1241488

1095-9203

Maria R. Lukatskaya, Olha Mashtalir, Chang E. Ren, Yohan Dall’Agnese, Patrick Rozier, Pierre‐Louis Taberna, Michael Naguib, Patrice Simon, Michel W. Barsoum, Yury Gogotsi,

Supercapacitor Materials and Fabrication

Toward Titanium Carbide Batteries Many batteries and capacitors make use of lithium intercalation as a means of storing and transporting charge. Lithium is commonly used because it offers the best energy density, but also because there are difficulties in storing larger cations without disrupting the crystal structure of the host. Lukatskaya et al. (p. 1500 ) developed a series of MX compounds, where M represents a transition metal and X is carbon or nitrogen.The compound Ti 3 C 2 forms a two dimensional layered structure, which is capable of accommodating a wide range of cations, including multivalent ones, either spontaneously or electrochemically