Ultra-Thin ReS2 Nanosheets Grown on Carbon Black for Advanced Lithium-Ion Battery Anodes

Abstract

ReS2 nanosheets are grown on the surface of carbon black (CB) via an efficient hydrothermal method. We confirmed the ultra-thin ReS2 nanosheets with ≈1–4 layers on the surface of the CB (ReS2@CB) by using analytical techniques of field emission scanning electron microscopy (FESEM) and high-resolution transmission electron microscopy (HRTEM). The ReS2@CB nanocomposite showed high specific capacities of 760, 667, 600, 525, and 473 mAh/g at the current densities of 0.1 (0.23 C), 0.2 (0.46 C), 0.3 (0.7 C), 0.5 (1.15 C) and 1.0 A/g (2.3 C), respectively, in conjunction with its excellent cycling performance (432 mAh/g at 2.3 C; 91.4% capacity retention) after 100 cycles. Such LIB performance is greatly higher than pure CB and ReS2 powder samples. These results could be due to the following reasons: (1) the low-cost CB serves as a supporter enabling the formation of ≈1–4 layered nanosheets of ReS2, thus avoiding its agglomeration; (2) the CB enhances the electrical conductivity of the ReS2@CB nanocomposite; (3) the ultra-thin (1–4 layers) ReS2 nanosheets with imperfect structure can function as increasing the number of active sites for reaction of Li+ ions with electrolytes. The outstanding performance and unique structural characteristics of the ReS2@CB anodes make them promising candidates for the ever-increasing development of advanced LIBs.

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“…Similarly, Yan et al. synthesized ReS 2 nanosheets with ultra‐thin thickness (1–4 layers) on the surface of carbon black (CB) hydrothermally . The ReS 2 ultrathin nanosheets, approximately 1 to 4 layers, allowed accelerated Li + diffusion; whereas the CB scaffold provided electronic conductivity and acted as a buffer for volume variations and mechanical stresses.…”

Unveiling the capability of graphitic carbon nitride–rhenium disulfide nanocomposite as an electrochemical sensing platform for the detection of dimetridazole from human serum samples

“…3(d) depicts the S 2p scan in which two primary peaks were observed at 162.5 eV and 163.9 eV, corresponding to the 2p 3/2 and 2p 1/2 states, respectively, confirming the formation of ReS 2 . 52…”

CVD growth of rhenium sulfide on carbon nanotubes as an anode for improving the performance of lithium ion batteries

“…In recent years, it is reported that compositing layered structure ReS 2 with other materials is an effective method to solve the problem, such as carbon nanotubes (CNTs), CMK-3, CMK-5, etc [14][15][16][17]. Qin and co-workers found that the ReS 2 /3DGF exhibits a good capacity retention of over 500 mAh g −1 for the first eight cycles [10].…”