Crystalline Planes templated engineering of defect chemistry in Cobalt(II, III) oxide anodes for lithium ion batteries

Surface Defect Modulation with Intercalation Ion Doping Vanadium Oxide to Enhance Zinc Storage Performance

“…The successful doping of cobalt ions is proved, − which is consistent with the results of the EDS. Based on Figure d, the peaks can be fitted by three subpeaks that are located at ∼530.1, ∼531.2, and ∼533.0 eV that correspond to lattice oxygen (O l ), oxygen vacancies (O V ), and oxygen atoms from the surface water molecule (O W ). − O V was formed in the material by the hydrothermal reaction (Figure S6), and O V in NHVO–N 2 is more than that in NHVO. , Combined with our previous analysis of TEM, we believe that after the low-temperature annealing treatment, the surface structural stability of NHVO–N 2 has been promoted. In addition, as reported, the V 4+ /V 5+ in the mixed valence state and oxygen defect could increase material’s electrical conductivity, leading to high capacitance and long cycle durability.…”

“…Figure c exhibits the narrow scan of Co, two bands centered at 780.7 eV ascribe to Co 2p 3/2 with a satellite at 785.9 eV, and another pair of bands at 796.5 eV is attributed to Co 2p 1/2 with a satellite at 800.1 eV. The successful doping of cobalt ions is proved, − which is consistent with the results of the EDS. Based on Figure d, the peaks can be fitted by three subpeaks that are located at ∼530.1, ∼531.2, and ∼533.0 eV that correspond to lattice oxygen (O l ), oxygen vacancies (O V ), and oxygen atoms from the surface water molecule (O W ). − O V was formed in the material by the hydrothermal reaction (Figure S6), and O V in NHVO–N 2 is more than that in NHVO. , Combined with our previous analysis of TEM, we believe that after the low-temperature annealing treatment, the surface structural stability of NHVO–N 2 has been promoted.…”

Recent advances of metal telluride anodes for high-performance lithium/sodium–ion batteries

“…Usually, the appealing anode materials consist of three types based on the reaction mechanism, 7,8 including intercalation anodes (TiO 2 , Li 4 Ti 5 O 12 , Nb 2 O 5 ), 9–11 alloy anodes (Si, Ge, Sn) 12–14 and conversion anodes (Co 3 O 4 , NiO, MoS 2 ). 15–17 Generally, the intercalation anodes have advantages on the price, working potential, and cycling stability but exhibit a low capacity and energy density.…”

Erdite NaFeS2 as a New Anode Material for Lithium-Ion Batteries

“…As one of the key components in lithium-ion batteries (LIBs), the anode greatly affects the performance of the whole battery. − At present, the anode materials used in most LIBs are graphite in various forms because of their good conductivity, high reversibility, low cost, and suitable working voltage. , However, their theoretical specific capacity is rather low (372 mAh·g –1 ), which drags down the energy density and power density of the batteries. Many new kinds of anode materials with high theoretical capacity have been developed, such as alloy type (Si, Sn, P, Ge, etc.…”