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Highly Porous Mn 3 O 4 Micro/Nanocuboids with In Situ Coated Carbon as Advanced Anode Material for Lithium‐Ion Batteries
Author(s) -
Jiang Yao,
Yue JiLi,
Guo Qiubo,
Xia Qiuying,
Zhou Chong,
Feng Tao,
Xu Jing,
Xia Hui
Publication year - 2018
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201704296
Subject(s) - materials science , anode , carbon fibers , lithium (medication) , chemical engineering , overpotential , electrochemistry , nanocages , porosity , transition metal , nanotechnology , composite number , electrode , composite material , catalysis , chemistry , organic chemistry , medicine , engineering , endocrinology
The electrochemical performance of most transition metal oxides based on the conversion mechanism is greatly restricted by inferior cycling stability, rate capability, high overpotential induced by the serious irreversible reactions, low electrical conductivity, and poor ion diffusivity. To mitigate these problems, highly porous Mn 3 O 4 micro/nanocuboids with in situ formed carbon matrix (denoted as Mn 3 O 4 @C micro/nanocuboids) are designed and synthesized via a one‐pot hydrothermal method, in which glucose plays the roles of a reductive agent and a carbon source simultaneously. The carbon content, particle size, and pore structure in the composite can be facilely controlled, resulting in continuous carbon matrix with abundant pores in the cuboids. The as‐fabricated Mn 3 O 4 @C micro/nanocuboids exhibit large reversible specific capacity (879 mAh g −1 at the current density of 100 mA g −1 ) as well as outstanding cycling stability (86% capacity retention after 500 cycles) and rate capability, making it a potential candidate as anode material for lithium‐ion batteries. Moreover, this facile and effective synthetic strategy can be further explored as a universal approach for the synthesis of other hierarchical transition metal oxides and carbon hybrids with subtle structure engineering.