Facile Synthesis of Carbon-Coated Porous Sb₂Te₃ Nanoplates with High Alkali Metal Ion Storage

Abstract

Constructing advanced anode materials with suitable operational potential and high energy density toward metal ion batteries is of significance for next-generation batteries. Carbon-coated porous Sb 2 Te 3 nanoplates with high density and suitable operational potential, prepared by a hydrothermal and carbonization technique, manifest good electrochemical performance, including excellent rate capability, high capacities, and outstanding cycling performance. This performance can be traced to its special structure, including porous Sb 2 Te 3 and the shell of carbon, which can provide fast charge transfer paths and maintain the structural stability for the entire material. The proposed strategy here of embedding porous high-density anode material in twodimensional carbon provides a new avenue for designing anode materials with excellent gravimetric and volumetric capacities toward superior energy storage. KEYWORDS: volumetric capacity, porous Sb 2 Te 3 @C, lithium ion batteries, Sb 2 Te 3 , sodium ion batteries, nanoplates

Sb2Te3 Hexagonal Nanosheets as High-Capacity Positive Materials for Rechargeable Aluminum Batteries

“…Sb 2 Te 3 nanosheets are prepared by a simple hydrothermal method . The preparation of Sb 2 Te 3 is composed of two steps: (1) the formation of Sb 3+ ions by mixing tartaric acid with SbCl 3 ; (2) the reduction of Te 4+ into Te 2‑ and then formation of Sb 2 Te 3 with Sb 3+ by adding sodium tellurite, ammonia, and hydrazine hydrate in reaction kettle at high temperature.…”

Recent advances of metal telluride anodes for high-performance lithium/sodium–ion batteries

“…The above discussed Sb 2 Te 3 composite was fabricated using a simple mechanical alloying method, there are also other synthesis methods that have been used, such as solvothermal, 67 hydrothermal, 33 sol–gel, 68 and metal–organic chemical vapor deposition (MOCVD). 69 Interestingly, Yin et al 67 creatively designed novel hierarchical nano-heterostructures with chemically integrated 1D Te nanowire and 2D Sb 2 Te 3 nanoblades (STNH) by solvothermal method.…”

“…30 Furthermore, it can deliver an outstanding volumetric capacity (2625 mA h cm −3 ) based on the high density of 6.25 g cm −3 and gravimetric capacity (420 mA h g −1 ). 31 The appreciable and unique characteristics of Te have inspired the investigation of the properties of different metal tellurides, including Bi 2 Te 3 , 32 Sb 2 Te 3 , 33 MoTe 2 , 34 GeTe, 35 ZnTe, 36 CoTe 2 37 and so forth for use in LIBs and SIBs as demonstrated by over 50 published articles on this subject.…”

2D Materials Based on Main Group Element Compounds: Phases, Synthesis, Characterization, and Applications

“…[ 289 ] Combing solvothermal and carbonization techniques can prepare Sb 2 Te 3 /C nanoplates that exhibit good electrochemical performance as anode materials for alkali battery systems. [ 290 ] The electrochemical reaction mechanism between Sb 2 Te 3 and Li was investigated thoroughly using ex situ XRD. [ 291 ] Apart from hydrothermal methods to synthesize Sb 2 Te 3 nanosheets, solution‐based methods have also been reported.…”