New materials are urgently needed to meet the demands of the Lithium-ion batteries market. Lightweight advanced anode nanomaterials that recharge quickly are a critical component for future battery applications. In particular, graphite, which has been used as the active anode material since 1985,is still used in at least 95% of the batteries produced today—however, graphite has reached its technical limits. Nanomaterials represent the new frontier adopted by the battery manufacturing community to surmount the graphite’s shortcomings.
COnovate’s co-founders have discovered and patented a new carbon-based nanomaterial, named Graphene Monoxide (GmO), which is a solid form of carbon monoxide with 2-dimensional (2D) crystal structure. The oxygen and carbon atoms, in 1:1 ratio, are ordered in a centered rectangular crystal lattice in GmO, making it fundamentally different from the 3D graphite oxide and 2D graphene oxide, in which oxygen is non-stoichiometric and disordered—while carbon is ordered—in a hexagonal graphene lattice.
When GmO layers are stacked on one another and nanocomposited with graphene, the interlayer spacing is larger than graphite, facilitating faster lithium intercalation. In contrast to graphite, the Li is intercalated at a higher potential, which reduces/eliminates the likelihood of short circuits developing between the cathode and anode that are the main cause of fires during charging.
When GmO is composited with graphite as an additive—or used by itself—as a drop-in replacement (critical for integrating with the existing battery manufacturing infrastructure), GmO enhances the performance of LIBs.
Evidence of COnovate’s Multiphasic Material. LEFT-Top: Perspective view of 4×4 unit cells of graphene monoxide (GmO). Carbon (oxygen) atoms are yellow (red). LEFT-Bottom:Top view of GmO showing structural parameters. CENTER: Electron Diffraction patterns of (left) GO and (right) G-GmO nanocomposite samples. RIGHT: Infrared Normal Incidence (NI) absorbance spectrum of G-GmO showing C-O-C functional groups of GmO (1225cm–1) and C-C (1550cm–1) of graphene mixing with broad band electronic excitations (SafeLi Gen 1).