SnS@C nanoparticles anchored on graphene oxide as high-performance anode materials for lithium-ion batteries

Abstract

Tin (II) sulfide (SnS) has been regarded as an attractive anode material for lithium-ion batteries (LIBs) owing to its high theoretical capacity. However, sulfide undergoes significant volume change during lithiation/delithiation, leading to rapid capacity degradation, which severely hinders its further practical application in lithium-ion batteries. Here, we report a simple and effective method for the synthesis of SnS@C/G composites, where SnS@C nanoparticles are strongly coupled onto the graphene oxide nanosheets through dopamine-derived carbon species. In such a designed architecture, the SnS@C/G composites show various advantages including buffering the volume expansion of Sn, suppressing the coarsening of Sn, and dissolving Li2S during the cyclic lithiation/delithiation process by graphene oxide and N-doped carbon. As a result, the SnS@C/G composite exhibits outstanding rate performance as an anode material for lithium-ion batteries with a capacity of up to 434 mAh g−1 at a current density of 5.0 A g−1 and excellent cycle stability with a capacity retention of 839 mAh g−1 at 1.0 A g−1 after 450 cycles.

Phase-Engineered Tin Sulfides and Their Heterostructure with Ti3C2Tx MXene for All-Solid-State Flexible Asymmetric Supercapacitors

“…Two distinct interlayer spacings (0.38 and 0.283 nm) were found for β-SnS, which corresponded to d 201 and d 111 , respectively, and for MXene, d 006 matched with the interlayer spacing of 0.41 nm. Additionally, the interlayer spacing successfully matched the XRD findings. − Figure d showcases the EDAX mapping of β-SnS/MXene, which explains the uniform distribution of all of the constituent atoms throughout the surface. Surface area measurements and pore size allocation of the pristine and hybrids were done using BET (Brunauer–Emmett–Teller) analysis, which is showcased in Figure c.…”

Electrochemical Nanosensor for the Simultaneous Determination of Anticancer Drugs Epirubicin and Topotecan Using UiO-66-NH2/GO Nanocomposite Modified Electrode

“…Despite the many features of GO, features such as its high surface area and electrical conductivity led to GO being used as a suitable and practical material in many fields of electrochemistry, including electrochemical sensing, energy storage and conversion, etc. [52][53][54][55][56].…”