Porous MXene Frameworks Support Pyrite Nanodots toward High-Rate Pseudocapacitive Li/Na-Ion Storage
Cheng-Feng Du, Qinghua Liang, Yun Zheng, Yubo Luo, Hui Mao, Qingyu Yan
ACS Applied Materials & Interfaces | AMER CHEMICAL SOC | Published : 2018
Presented are the novel Ti3C2 T x MXene-based nanohybrid that decorated by pyrite nanodots on its surface (denoted as FeS2@MXene). The nanohybrid was obtained by the one-step sulfurization of self-assembled iron hydroxide@MXene precursor. When used for Li/Na-ion storage, the FeS2@MXene nanohybrid present excellent rate capabilities. Particularly, for Li-ion storage, an elevated reversible specific capacity of 762 mAh g-1 at 10 A g-1 after 1000 cycles was achieved. And for Na-ion storage, the FeS2@MXene nanohybrid also delivering a reversible specific capacity of 563 mAh g-1 after 100 cycles at a current density of 0.1 A g-1.
Awarded by Singapore MOE Tier 2
Awarded by MOE AcRF Tier 1
Awarded by Singapore EMA
Awarded by National Research Foundation of Singapore (NRF) Investigatorship award
The authors gratefully acknowledge Singapore MOE Tier 2 MOE2017-T2-2-069, MOE AcRF Tier 1 under grants RG113/15 and 2016-T1-002-065, Singapore EMA project EIRP 12/NRF2015EWT-EIRP002-008, and National Research Foundation of Singapore (NRF) Investigatorship award number NRF2016NRF-NRFI001-22. The authors also acknowledge the Facility for Analysis, Characterization, Testing and Simulation (FACTS), Nanyang Technological University, Singapore, for use of the TEM JEOL 2010 UHR, FESEM JEM-7600F, and XRD Bruker D8 Advance facilities.