Investigation of Al-doping effects on the NaFe0.5Mn0.5O2 cathode for Na-ion batteries

Cathode Material with Superior Rate Capability for Na-Ion Batteries

Dr. L. Liu, Prof. X. Li, Dr. S.-H. Bo, Dr. Y. Wang, Dr. N. Twu, Prof. G. Ceder Department of Materials Science and Engineering Massachusetts Institute of Technology Cambridge , MA 02139 , USA E-mail: [email protected] Prof. X. Li John A. Paulson School of Engineering and Applied Sciences Harvard University Cambridge , MA 02138 , USA Prof. H. Chen The Woodruff School of Mechanical Engineering Georg...

Detailed investigation of Na2.24FePO4CO3 as a cathode material for Na-ion batteries

Na-ion batteries are gaining an increased recognition as the next generation low cost energy storage devices. Here, we present a characterization of Na3FePO4CO3 nanoplates as a novel cathode material for sodium ion batteries. First-principles calculations reveal that there are two paths for Na ion migration along b and c axis. In-situ and ex-situ Fe K-edge X-ray absorption near edge structure (...

Effects of Al-doping on the properties of Li–Mn–Ni–O cathode materials for Li-ion batteries: an ab initio study

The key properties of a successful cathode material, such as the structural stability during delithiation, the battery voltage, and the Li mobility, were investigated for Al-doped Li–Mn–Ni oxide structures, using density-functional theory and the nudged-elastic band method. The rhombohedral layered structure of LiMn0.5Ni0.5O2 with zigzag and flower arrangements of transition metal atoms as well...

O3-type Na(Mn0.25Fe0.25Co0.25Ni0.25)O2: A quaternary layered cathode compound for rechargeable Na ion batteries

a r t i c l e i n f o Sodium Na-ion battery We report a new layered Na(Mn 0.25 Fe 0.25 Co 0.25 Ni 0.25)O 2 compound with O3 oxygen stacking. It delivers 180 mAh/g initial discharge capacity and 578 Wh/kg specific energy density with good cycling capability at high cutoff voltage. In situ X-ray diffraction (XRD) shows a reversible structure evolution of O3-P3-O3′-O3″ upon Na de-intercalation. Th...

Todorokite-type manganese oxide nanowires as an intercalation cathode for Li-ion and Na-ion batteries