Hierarchical donut-shaped LiMn₂O₄as an advanced cathode material for lithium-ion batteries with excellent rate capability and long cycle life

Abstract

In this work, we have demonstrated a facile approach to synthesize donut-shaped LiMn2O4 comprising interpenetrating nanograins, and this material demonstrates excellent high-rate cycling reversibility.

Hollow nanospheres composed of titanium dioxide nanocrystals modified with carbon and gold for high performance lithium ion batteries

“…The ever-increasing performance demands of LIBs largely depend on the selection of electrode materials [5,6]. Therefore, considerable efforts have been focused on the rational design of electrode materials with diverse morphologies and structures, which can deliver superior cycling performance and rate properties [7,8]. However, as conventional anode materials, the application of graphite and carbon-based materials have been still limited by their low lithium insertion potential and lithium diffusion coefficient, which always leads to the formation of lithium dendrites on the surface of electrodes after consecutive cycles, as well as the rapid capacity fading.…”

Green electrode processing using a seaweed-derived mesoporous carbon additive and binder for LiMn2O4 and LiNi1/3Mn1/3Co1/3O2 lithium ion battery electrodes

“…This finding is very interesting because LMO or NMC electrodes made using bulk type active materials (i.e. non-porous without nano-structuration) often showed very low specific capacity, [33][34][35][36] generally due to the non-porous structure of the active material, the lack of electrochemical activity or the poor accessibility the material by lithium ions. However, these results show that the poor performance of bulk materials can be simply overcome by generating mesoporosity within the electrode using a mesoporous carbon additive such as A800.…”

High Performance LiMn1.9Al0.1O4 Porous Microspheres Rapidly Self‐Assembled through an Acetylene‐Black‐Assisted Solid‐State Approach

“…LiMn 2 O 4 (LMO) is regarded as one of the most promising cathode materials for the next generation LIBs owing to its intrinsic merits such as three dimensional lithium ion transport channels, superior structural stability, good safety, low cost and environmental friendliness . However, power density and cycle lifetime of LMO are still far from satisfactory due to the sluggish Li + diffusion in the solid phase, the Jahn‐Teller distortion, and the Mn dissolution ,…”