Binder-free 3D porous Fe3O4–Fe2P–Fe@C films as high-performance anode materials for lithium-ion batteries

A Bio-Inspired Nanotubular Na2MoO4/TiO2 Composite as a High-Performance Anodic Material for Lithium-Ion Batteries

“…Unfortunately, the theoretical capacity of the graphitic carbon (372 mA g −1 ) is rather low to satisfy the impending need of high energy densities [ 5 ]. Therefore, immense efforts have been paid on the investigation of the high-performance anodic materials, especially the transition metal oxides, such as NiO [ 6 , 7 ], MnO [ 8 , 9 ], Mn 3 O 4 [ 10 ], Fe 3 O 4 [ 11 , 12 , 13 ], Fe 2 O 3 [ 14 ], SnO 2 [ 15 ], and V 2 O 3 [ 16 ], etc. The metal oxides are outstanding electrode material candidates for lithium storage on account of their excellent electronic conductivities, larger theoretical capacities, as well as favorable diffusion abilities of lithium ions [ 17 ].…”

Ni3S2–Ni Hybrid Nanospheres with Intra‐Core Void Structure Encapsulated in N‐Doped Carbon Shells for Efficient and Stable K‐ion Storage

“…The specific capacity increased slightly after cycling for a few turns in Figure 3e,f due to the activation of the porous electrode during the charge and discharge processes. [ 46 , 47 ] The further improvements of potassium storage performance (capacity and stability) benefited from the intra‐core void structure created after etching, which acted as a K reservoir to shorten the transmission path [ 20 ] and a buffer to mitigate volume expansion. [ 19 ] Moreover, as the SEM and TEM images of Ni 3 S 2 ‐Ni@NC‐AE after 500 cycles at 0.1 A g −1 showed (Figure S13b–d , Supporting Information), the morphology of the anode was basically unchanged before and after the cycle, and the shell–core structure of the NiS‐based nanosphere particles was intact.…”

Interface Engineering of Space-Confined Fe3O4/FeS Heterostructures: Synergistic Effect and Ultrastable Li Storage

“…Lithium-ion batteries (LIBs), , which play an essential role as important energy storage devices, have greatly facilitated the development of new energy vehicles, intelligent electronics, and other devices − as a result of their merits of high energy density, stable cycling property and good ecological friendliness − and also effectively alleviated the energy crisis and environmental deterioration . However, it is difficult for the commercial graphite anode with a low theoretical specific capacity (372 mA h·g –1 ) to satisfy the requirements of large capacity and high energy density in the new era of carbon peak and carbon neutralization, − especially in the field of power batteries . Therefore, many efforts have been made to investigate and develop alternative anodes for high-performance LIBs. , …”