Accurate Control of Multishelled Co₃O₄ Hollow Microspheres as High‐Performance Anode Materials in Lithium‐Ion Batteries

Abstract

More than just an empty shell: Multishelled Co3O4 microspheres were synthesized as anode materials for lithium‐ion batteries in high yield and purity. As their porous hollow multishell structure guarantees a shorter Li+ diffusion length and sufficient void space to buffer the volume expansion, their rate capacity, cycling performance, and specific capacity were excellent (1615.8 mA h g−1 in the 30th cycle for triple‐shelled Co3O4; see graph).

A Nanosheets‐on‐Channel Architecture Constructed from MoS2 and CMK‐3 for High‐Capacity and Long‐Cycle‐Life Lithium Storage

“…[ 5,6 ] Recently, transition metal oxides and sulfi des have been intensely investigated as anode materials for LIBs in view of their high capacity, long cycle life, design fl exibility and environmental friendliness. [7][8][9][10][11] In order to store electric energy more effi ciently, one key point is to select the right electrode materials and design the proper structures. Molybdenum sulfi de (MoS 2 ), a typical layered dichalcogenide material, has attracted signifi cant attention for LIBs because of its 4-electron transfer reaction during the charge/ discharge process which can in theory achieve a much higher specifi c capacity.…”

Core–Shell Structure of Hierarchical Quasi‐Hollow MoS2 Microspheres Encapsulated Porous Carbon as Stable Anode for Li‐Ion Batteries

“…Various metal oxides, bimetal oxides, carbons, and polymers have been fabricated into hierarchical hollow structures, which exhibit superior performance as compared with the solid counterparts. [27][28][29][30] Nonetheless, preparation of uniform hierarchical hollow MoS 2 particles for application in LIBs was rarely reported. [ 17 ] Under these circumstances, in this work, we present the designed synthesis of hierarchical MoS 2 quasi-hollow microspheres with porous carbon encapsulated inside, which are also described as core-shell C@MoS 2 microspheres.…”

Hollow-in-hollow carbon spheres with hollow foam-like cores for lithium–sulfur batteries

“…Very recently, hollow-in-hollow oxide materials with hollow cores have been successfully developed to fabricate high-performance lithium ion battery anodes [41,42]. The hollow-in-hollow structure has been demonstrated to improve the capacity and charge retention of hollow metal oxide spheres due to the better utilization of the void interior [41,42]. From the viewpoint of fundamental research, the synthesis of hollow-inhollow carbon spheres with hollow cores (designated as HCS@C) based on the corresponding HCS offers a way to investigate and understand the advantages of hollow-in-hollow structure.…”