Nanoparticles Engineering for Lithium‐Ion Batteries

Abstract

Lithium‐ion batteries (LIBs) have been extensively investigated due to the ever‐increasing demand for new electrode materials for electric vehicles (EVs) and clean energy storage. A wide variety of nano/microstructured LIBs electrode materials are hitherto created via self‐assembly, ranging from 0D nanospheres; 1D nanorods, nanowires, or nanobelts; and 2D nanofilms to 3D nanorod array films. Nanoparticles can be utilized to build up integrated architectures. Understanding of nanoparticles’ self‐assembly may provide information about their organization into large aggregates through low‐cost, high‐efficiency, and large‐scale synthesis. Here, the focus is on the recent advances in preparing hierarchically nano/microstructured electrode materials via self‐assembly. The hierarchical electrode materials are assembled from single component, binary to multicomponent building blocks via different driving forces including diverse chemical bonds and non‐covalent interactions. It is expected that nanoparticle engineering by high‐efficient self‐assembly process will impact the development of high‐performance electrode materials and high‐performance LIBs or other rechargeable batteries.

Improved Electrochemical Performance of Li1.25Ni0.2Co0.333Fe0.133Mn0.333O2 Cathode Material Synthesized by the Polyvinyl Alcohol Auxiliary Sol-Gel Process for Lithium-Ion Batteries

“…For x = 10.0 wt%, the sample has the smallest particle size and the most uniform distribution. It is well known that electrochemical lithium insertion/extraction is much easier in small particles, because of the reduction of diffusion pathways for Li + ions, which also enables faster electronic transport through the size effect [19].…”

Recent advances in the design of cathode materials for Li-ion batteries

“…[82][83][84][85] Despite the fact that the nanomaterials with the high surface area are known for their undesired side reactions with the electrolyte, reduction of particle size of Lirich materials to the nanoscale shows a better rate capability and a decrease in the diffusion path of Li ions. 86,87 Moreover, decreasing the interface area between the electrode and the electrolyte by controlling the morphology of the nanomaterials could suppress the erosion from the electrolyte and improve the cycling performance. Taking Li 1.2 Ni 0.2 Mn 0.6 O 2 as an example, hierarchical nanoplates structure shows outstanding rate capability as shown in Fig.…”

Structure-tunable supraparticle assemblies of hollow cupric oxide sheathed with nanographenes

“…This unique design strategy allows for the formation of both interior voids and pores between the nanoparticles, which can provide not only free spaces to accommodate the volume variations during the electrochemical reaction, but also short diffusion paths for mass transfer into the nanoparticles and facile penetration of the electrolyte. 9,10,[24][25][26] These SPs also combine the advantages of high capacity, fast kinetics of nanometre-sized building units, and enhanced stability of supraparticle assemblies.…”