Advanced TexSy-C Nanocomposites for High-Performance Lithium Ion Batteries

Abstract

This study is dedicated to expand the family of lithium-tellurium sulfide batteries, which have been recognized as a promising choice for future energy storage systems. Herein, a novel electrochemical method has been applied to engineer micro-nano TexSy material, and it is found that TexSy phases combined with multi-walled carbon nanotubes endow the as-constructed lithium-ion batteries excellent cycling stability and high rate performance. In the process of material synthesis, the sulfur was successfully embedded into the tellurium matrix, which improved the overall capacity performance. TexSy was characterized and verified as a micro-nano-structured material with less Te and more S. Compared with the original pure Te particles, the capacity is greatly improved, and the volume expansion change is effectively inhibited. After the assembly of Li-TexSy battery, the stable electrical contact and rapid transport capacity of lithium ions, as well as significant electrochemical performance are verified.

Tellurium Nanowires for Lithium‐Metal Anode Stabilization in High‐Performance Anode‐Free Li–S Batteries

“…It has been reported that the Te containing ternary sulfide (Li 2 Te x S y ) species at the SEI acts as a good Li-ion conductor to efficiently distribute the Li-ion flux, leading to a homogenous Li plating and stripping. [51,69] The formation of reaction products between Te and polysulfides can also be confirmed from the Te 3d XPS spectra. Figure S13, Supporting Information, shows the presence of Te 4þ peaks at 574.8 eV on the surface of the SEI, which results from the formation of Li 2 TeS 3 .…”

“…It has been reported that the Te containing ternary sulfide (Li 2 Te x S y ) species at the SEI acts as a good Li‐ion conductor to efficiently distribute the Li‐ion flux, leading to a homogenous Li plating and stripping. [ 51,69 ]…”

Cathode materials for halide-based aqueous redox flow batteries: recent progress and future perspectives

“…Recently, lead-acid and Li-ion batteries have been considered as the two types of the most common energy storage batteries (ESB), showing lower storage efficiency and environmentally hazardous, high-cost, and risky flammable organic electrolytes, respectively, restricting and making them powerless to applications in practical large-scale energy storage applications (LSESA). 6,7 Among the most effective ESS for stationary applications, a special place is occupied by RFB technology, encompassing easy scalability of power density and energy capacity, low self-discharge, long cycle life, and cost efficiency to LSESA. [8][9][10] Relative to the traditional Li-ion ESB storing energy methods such as "rocking-chair type", RFB stores the electrical energy by virtue of the soluble redox couples, converting excess electrical energy to chemical energy and vice versa.…”