Rational design of MnS nanoparticles anchored on N,S-codoped carbon matrix as anode for lithium-ion batteries
Weiqin Li, Mengyuan Yue, Huinan Guo, Zhaoxia Yuan, Yafei Liu, Kai Chen, Juming Gu, Yijing Wang
Abstract
The manganese sulfide (MnS) has attracted more attention as anode material on energy storage and conversion field, owing to its high theoretical capacity (616 mA h g−1) and good electrochemical activity. However, low electronic conductivity and large volume expansion during charge-discharge processes have limited its further application. In order to address above mentioned problems, the composites, MnS nanoparticles embedded in N,S-codoped porous carbon skeleton (named as MnS/N,S–C composites), herein have been prepared successfully using metal organic framework (Mn-NTA) as template. The porous carbon skeleton not only can enhance electrode conductivity, but also relieve volume expansion during charge-discharge processes. Thus, the rational design towards electrode architectures has endowed MnS/N,S–C nanocomposites with superior electrochemical performance, which delivers the specific capacities of 676.7 mA h g−1 at the current density of 100 mA g−1.