Modulating Sand’s time by ion-transport-enhancement toward dendrite-free lithium metal anode

Interfacial Electron Redistribution of Hydrangea‐like NiO@Ni2P Heterogeneous Microspheres with Dual‐Phase Synergy for High‐Performance Lithium–Oxygen Battery

“…Coupling NiO with Ni 2 P can facilitate intimately electrical contact of each other, which helps to increase electrical conductivity and improve kinetics of oxygen electrode reaction in LOBs. [3] The selected area electron diffraction (SAED) pattern of NiO@ Ni 2 P shows the clear diffraction rings (Figure 2f). The diffraction rings can be attributed to (111) and (212) planes of Ni 2 P and (111) and (220) planes of NiO, respectively, which further proves the successful synthesis of NiO@Ni 2 P heterostructure.…”

“…For NiO, the peaks of 856.7 and 861.2 eV are attributed to the Ni 2p 1/2 regions of Ni 2+ in NiO and satellite peak, meanwhile the corresponding peaks in the Ni 2p 3/2 region are located at 874.6 and 881.0 eV, respectively. [3] For Ni 2 P, the bands of Ni 2p 3/2 and 2p 1/2 are located at 853.8 and 873.2 eV, respectively, which are assigned to Ni δ+ of Ni 2 P, and the peaks at 855.4 eV (2p 3/2 ) and 873.3 eV (2p 1/2 ) correspond to Ni 2+ of the oxidized Ni species, accompanied with the satellite peaks of 860.8 and 876.7 eV. [25,26] In contrast, the Ni 2p 1/2 region for NiO@Ni 2 P at 854.2, 855.9, and 861.3 eV are attributed to Ni δ+ in Ni 2 P, Ni 2+ in NiO and satellite peak, respectively, while the other three peaks at 872.8, 873.8, and 880.2 eV belong to the corresponding Ni 2p 3/2 bands.…”

“…LOBs with ultra-high theoretical specific energy can meet the demand of emerging portable electronic devices and electric vehicles. [1][2][3][4][5] However, some critical obstacles should be overcome before its practical application. The sluggish redox kinetics and the insoluble and insulating Li 2 O 2 discharge products lead to severe polarization, low rate capability, and limited cycle stability of state-of-the-art LOBs.…”

“…[12] For the solution-mediated pathway, disproportionation reaction of dissolved intermediate LiO 2 usually forms a large-size toroid-like Li 2 O 2 , resulting in a large discharge capacity but a high charge overpotential which is due to the limited contact between large-size discharge products and electrode surface. [3,12] For the surface adsorption pathway, electrode surface shows strong adsorption toward intermediate LiO 2 , finally leading to the deposition of thin film-like amorphous Li 2 O 2 on the oxygen electrode. The thin film-like Li 2 O 2 is in close contact with electrode, which is beneficial to reduce the charging overpotential.…”

Fabrication of a highly stable Nb2O5@C/CNTs based anolyte for lithium slurry flow batteries

“…Compared with other advanced lithium-based energy storage systems such as lithium metal batteries, [7][8][9] RFBs, such as Fe/Cr liquid ow batteries, full vanadium liquid ow batteries, Zn/Br liquid ow batteries, Fe/V liquid ow batteries and so on, [10][11][12][13] have received extensive attention due to their merits of large-scale energy storage and high safety, especially their unique power and energy decoupling characteristic. 14,15 Through structural design and optimization, Chiang et al proposed an innovative concept of semi-solid ow batteries.…”