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Single‐Step Synthesis of Mesoporous Carbon Nitride/Molybdenum Sulfide Nanohybrids for High‐Performance Sodium‐Ion Batteries
Author(s) -
Kim Sungho,
Cha Wangsoo,
Ramadass Kavitha,
Singh Gurwinder,
Kim In Young,
Vinu Ajayan
Publication year - 2020
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.202000349
Subject(s) - materials science , mesoporous material , sulfidation , nitride , calcination , chemical engineering , molybdenum disulfide , carbon nitride , carbon fibers , anode , crystallinity , inorganic chemistry , nanotechnology , sulfur , electrode , chemistry , organic chemistry , catalysis , layer (electronics) , composite material , metallurgy , photocatalysis , composite number , engineering
Molybdenum disulfide (MoS 2 ) is a promising candidate as a high‐performing anode material for sodium‐ion batteries (SIBs) due to its large interlayer spacing. However, it suffers from continued capacity fading. This problem could be overcome by hybridizing MoS 2 with nanostructured carbon‐based materials, but it is quite challenging. Herein, we demonstrate a single‐step strategy for the preparation of MoS 2 coupled with ordered mesoporous carbon nitride using a nanotemplating approach which involves the pyrolysis of phosphomolybdic acid hydrate (PMA), dithiooxamide (DTO) and 5‐amino‐1H‐tetrazole (5‐ATTZ) together in the porous channels of 3D mesoporous silica template. The sulfidation to MoS 2 , polymerization to carbon nitride (CN) and their hybridization occur simultaneously within a mesoporous silica template during a calcination process. The CN/MoS 2 hybrid prepared by this unique approach is highly pure and exhibits good crystallinity as well as delivers excellent performance for SIBs with specific capacities of 605 and 431 mAhg −1 at current densities of 100 and 1000 mAg −1 , respectively, for SIBs.