Synergic effects of the decoration of nickel oxide nanoparticles on silicon for enhanced electrochemical performance in LIBs

Abstract

Decoration of NiO nanoparticles on silicon confers enhanced stable capacity due to the effective suppression of the volume expansion of silicon in LIBs.

Scalable, colloidal synthesis of SnSb nanoalloy‐decorated mesoporous 3D NiO microspheres as a sodium‐ion battery anode

“…The isotherm curves indicate type-IV adsorption and desorption F I G U R E 1 Schematic of the preparation of the SnSb nanoalloydecorated 3D NiO microspheres characteristics with a type-H3 hysteresis loop at high relative pressure owing to the multilayer adsorption of mesoporous materials. 35 Thus, in contrast to the nonporous characteristics of bulk SnSb, the mesoporous nature of the SnSb(50)/NiO(50) microspheres is realized; this is likely due to the presence of the NiO matrix during the synthesis. According to the BET isotherm and BJH pore-size distribution curves of the assynthesized 3D NiO microspheres (Figure S1B), the NiO matrix shows a mesoporous structure with a BET surface area of 10.2 m 2 g À1 and pore diameters in the range of 30 to 70 nm, which provides sufficient void space for the encapsulation of the SnSb nanoalloys.…”

Boosting lithium rocking-chair engineering from the villus cavity and Ni catalytic center of a silicon–carbon anode for high-performance lithium-ion batteries

“…The following equations were used to calculate the diffusion coefficient of Li + in the prepared electrodes: Z ′ = R s + R SEI + R ct + σω −1/2 where R is the gas constant, T is the absolute temperature, A represents the surface area of the electrode, n indicates the number of electrons per molecule in the intercalation process, F is the Faraday constant, C acts as the molar concentration of Li + in the electrode, ω is the angular frequency, and σ symbolizes the Warburg factor, which has a relation with Z ′. Because the Li + diffusion coefficient is only related to the slope σ in the low frequency band, 12,48–50 Fig. 4c shows the fitted curves for the samples.…”

Elevating the comprehensive performance of carbon-based hybrid electrode materials by incorporating nickel silicate for lithium-ion capacitors

“…In subsequent scans, a pair of redox peaks at 0.17 and 0.55 V correspond to the reversible insertion/extraction of Li + into/from ref. 49Si (Si + 4.4Li + + 4.4e − ↔ Li 4.4 Si),while another pair of redox peaks at 1.27 and 1.83 V represent the reversible conversion between Ni 2+ and 46,50–52 Ni (NiO + 2Li + + 2e − ↔ Ni + Li 2 O).…”