One‐Pot Synthesis of CuCo₂S₄ Sub‐Microspheres for High‐Performance Lithium‐/Sodium‐Ion Batteries

Abstract

Ternary transition metal sulfides have come into notice as a new class of prospective material with multiple applications in energy storage. In this work, CuCo 2 S 4 sub-microspheres with sizes of 0.3-0.5 μm were prepared by a facile one-pot solvothermal method. This method combines chemical coprecipitation and sulfidation processes into one pot to make it low-cost and time-saving by controlling the volume ratio of mixed solvent. The as-prepared CuCo 2 S 4 sub-microsphere exhibits an outstanding energy storage performance as dual anodes for lithium/sodium-ion batteries. It possesses a high specific capacity of 1081.3 mA h g À 1 at 100 mA g À 1 after 100 cycles with pseudocapacitive properties in lithium-ion batteries and 522.4 mA h g À 1 at 200 mA g À 1 after 140 cycles in sodium-ion batteries. The superior electrochemical performances of CuCo 2 S 4 sub-microspheres forecast they will be a kind of competitive anode materials for lithium/sodium-ion batteries.

A Durable Na0.56V2O5 Nanobelt Cathode Material Assisted by Hybrid Cationic Electrolyte for High‐Performance Aqueous Zinc‐Ion Batteries

“…According to previous literatures, the electrochemical reaction can be described as follows [Eq. (1)]: [28,[34][35][36][37][38][39][40] x Zn 2þ þ Na 0:56 V 2 O 5 þ 2x e À $ Zn x Na 0:56 V 2 O 5 (1) This reaction reflects the reversible insertion/extraction of Zn 2 + in the NVO. The capacitive effect of battery is calculated by Equations (2) and (3):…”

“…With the development of electric vehicles and portable electronics, there has been a growing requirement for an efficient, stable and safe power supply system. [1] Among various energy storage devices, lithium-ion batteries (LIBs), characterized by the excellent energy density and long-life utilization, have been widely applied in electric vehicles and intelligent equipment. [2,3] However, the exposed safety issues in recent years and limited lithium reserves hinder the further application of LIBs in burgeoning energy devices.…”

Recent Advances of Bimetallic Sulfide Anodes for Sodium Ion Batteries

“…Over recent years, BMSs with various morphologies have been successfully synthesized via solvothermal method. For example, NiCo 2 S 4 nanodots with N-doped carbon (NiCo 2 S 4 @NC) (Li S. et al, 2019), NiCo 2 S 4 hollow prism wrapped in reduced graphene oxide (rGO) (Zhang et al, 2018), N/S-rGO@ZnSnS 3 amorphous ZnSnS 3 @rGO (Liu et al, 2019), ((Ni 0.3 Co 0.7 ) 9 S 8 /N-CNTs/rGO) (Lv et al, 2018), (Co 0.5 Ni 0.5 ) 9 S 8 /N-C) nanoparticles (Cao et al, 2019), CuCo 2 S 4 /rGO nanoparticles (Li Q. et al, 2019), and so forth. These nanostructured materials synthesized through solvothermal method possess strong controllability, excellent electrochemical performance, fast ions, and electron transfer paths and outstanding rate capability (Zhao and Manthiram, 2015;Liu et al, 2017;Jia et al, 2018;Chen et al, 2019).…”

“…Generally, in the first discharge process of BMSs (e.g., NiCo 2 S 4 (Zhang et al, 2018), CuCo 2 S 4 (Gong et al, 2018;Li Q. et al, 2019), Ti 0.25 Sn 0.75 S 2 (Huang et al, 2018), and ZnSnS 3 Jia et al, 2018;Liu et al, 2019), Na + intercalates into BMSs and then a reversible conversion reaction occurs (Li S. et al, 2019). The principle of correlation reaction is similar to that of LIBs.…”

Ternary CuCo2S4 Thiospinel Nanocrystal-Coated Photodiode with Improved Photoresponsivity and Acceptance Angles for Optoelectronic Applications

“…CuCo 2 S 4 sub-microsphere particles were employed in lithium/sodiumion batteries, which is one of the different application areas, and sub-microspheres were synthesized by a one-pot solvothermal method. 11 Li et al 12 synthesized hydrophilic CuCo 2 S 4 nanocrystals by a hydrothermal method and used them in magnetic resonance/near-infrared imaging. Chen et al 13 synthesized yolk-shell-shaped CuCo 2 S 4 materials by anion exchange and employed them for photocatalytic degradation of methylene blue dye.…”