Synthesis of Nitrogen‐Rich Carbon Nitride‐Based Hybrids and a New Insight of Their Battery Behaviors

Abstract

AbstractN‐rich carbon nitride (CN) is a promising framework that can generate innovative hybrid structures for energy applications. However, the low thermal stability of N atoms in the CN matrix is a major drawback as the crystallization of the hybridized counterpart requires a high temperature. Herein, we report the successful synthesis of the hybrid of N‐rich CN and Fe1‐xS at 700 °C by constructing a stable C−N−Fe−S heterointerface using a Fe‐incorporated metal‐organic framework (MOF) and dithiooxamide containing C, N and S atoms. The hybrids display promising capacities toward Li+ and Na+ ions storage, highlighting the beneficial role of N‐rich CN on battery performance. By systematically investigating their structure and electrochemical properties, we show that N‐rich CN, along with the heterointerface, not only acts as a hybridization matrix that helps facilitate the charge transfer kinetics but also generates substantial capacity. This unique study reveals a powerful platform for the rational design of N‐rich CN based hybrids from MOF.