Few-layered ReS₂ nanosheets vertically aligned on reduced graphene oxide for superior lithium and sodium storage

Abstract

Hybrid 2D–2D heterostructures, consisting of few-layered ReS2 nanosheets vertically anchored on both sides of reduced graphene oxide, have been prepared and evaluated for energy storage application.

1T′‐ReS2 Confined in 2D‐Honeycombed Carbon Nanosheets as New Anode Materials for High‐Performance Sodium‐Ion Batteries

“…[46] The CV profiles of rGO@ ReS 2 show similar peaks to those for rGO@ReS 2 @N-C. [29][30][31] It is also found in rGO@ReS 2 with a low initial CE of 67.1% ( Figure S8a, Supporting Information). This result indicates improved Na + diffusion kinetics, dynamic properties and cycling stability of rGO@ReS 2 @N-C for application in SIBs anodes.…”

“…As shown in Figure 2e, the Re 4f fine spectrum of rGO@ReS 2 @N-C displays two core level peaks at 42.1 and 44.5 eV. Subsequently, Na x ReS 2 converts to Na 2 S/metallic Re in the pronounced peak at 0.23 V. [29][30][31][32] Additionally, the rGO@ReS 2 @N-C electrode after the first discharge to 0.01 V at 0.2 A g −1 was investigated. [24,30] Meanwhile, a similar result can also be observed in the Re 4f fine spectrum ( Figure S6d, Supporting Information) of rGO@ReS 2 .…”

“…This result indicates improved Na + diffusion kinetics, dynamic properties and cycling stability of rGO@ReS 2 @N-C for application in SIBs anodes. [31] The weight content of rGO in rGO@ReS 2 is 24.6%, Figure S5 (Supporting Information). As shown in Figure 3a, the rGO@ ReS 2 @N-C exhibits an initial discharge and charge capacities of, respectively, 620 and 427 mAh g −1 at 0.2 A g −1 that correspond to a coulombic efficiency (CE) of 68.9%.…”

“…This significantly impedes electrochemical performance of anisotropic ReS 2 anode materials in SIBs. To the best of our knowledge, only limited research has been undertaken to address this, including preparation of hierarchical pore nanostructures and construction of composites that anchor ReS 2 on the surface of carbon . For example, Mao et al reported a ReS 2 /carbon nanofiber composite.…”

2020 Roadmap on two-dimensional nanomaterials for environmental catalysis

“…This unique architecture combines the advantages of vertically aligned structure and 2D geometry, endowing the features of good mechanical stability, high utilization of active materials, and fast capacitive energy storage behavior. Liu [ 6 6 _ T D $ D I F F ] et al reported an electrostatic-attraction strategy to prepare the fewlayered ReS 2 nanosheets vertically aligned on rGO surfaces via hydrothermal method [55]. By mean of the synergistic effect between few-layered ReS 2 nanosheets and the graphene substrate with the sandwich-like structure, the outstanding excellent sodium storage performance can be obtained.…”