Tiago A. Martins, Roger Gonçalves, L. Cabral, Thales Rafael Machado, Robert da Silva Paiva, Roman Alvarez Roca, Ernesto Chaves Pereira, Miguel A. San-Miguel, E. Z. da Silva, E. Longo
{"title":"铜钨钠沉淀合成及锂嵌入","authors":"Tiago A. Martins, Roger Gonçalves, L. Cabral, Thales Rafael Machado, Robert da Silva Paiva, Roman Alvarez Roca, Ernesto Chaves Pereira, Miguel A. San-Miguel, E. Z. da Silva, E. Longo","doi":"10.1007/s10008-024-06110-2","DOIUrl":null,"url":null,"abstract":"<div><p>Hexagonal sodium tungsten bronze (h-Na<sub>x</sub>WO<sub>3+x/2·</sub>yH<sub>2</sub>O) nanorods were obtained by simple acid precipitation in 16 min at 97 °C, evidencing the saving of time and energy. The W-OH<sub>2</sub> modes were observed in Raman and Fourier transform infrared (FTIR) spectra to confirm the presence of structural water. The h-Na<sub>x</sub>WO<sub>3+x/2·</sub>yH<sub>2</sub>O was subjected to heat treatment at 300 °C to analyze the effects of heating on the material. X-ray photoelectron spectroscopy (XPS) and diffuse reflectance ultraviolet-visible absorption spectra (UV-vis) indicated the occurrence of diffusion on the surface-bulk of Na<sup>+</sup> ions, and the band gap changed from 2.7 eV to 2.4 eV with heating. Electrochromic devices based on h-Na<sub>x</sub>WO<sub>3+x/2·</sub>yH<sub>2</sub>O were constructed. The sample without heat treatment and with structural water loss presented the electrochromic efficiency of 127.5 cm<sup>2</sup>/C and 561.8 cm<sup>2</sup>/C, respectively, evidencing the creation of vacancies for the intercalation of lithium ions from heat treatment. Also, density functional theory calculations were performed to study the lithium diffusion process in the interstitial Na-WO<sub>6</sub> channels of sodium tungsten bronze.</p><h3>Graphical abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 5","pages":"1639 - 1651"},"PeriodicalIF":2.6000,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Bronze sodium tungsten precipitation synthesis and lithium intercalation\",\"authors\":\"Tiago A. Martins, Roger Gonçalves, L. Cabral, Thales Rafael Machado, Robert da Silva Paiva, Roman Alvarez Roca, Ernesto Chaves Pereira, Miguel A. San-Miguel, E. Z. da Silva, E. Longo\",\"doi\":\"10.1007/s10008-024-06110-2\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Hexagonal sodium tungsten bronze (h-Na<sub>x</sub>WO<sub>3+x/2·</sub>yH<sub>2</sub>O) nanorods were obtained by simple acid precipitation in 16 min at 97 °C, evidencing the saving of time and energy. The W-OH<sub>2</sub> modes were observed in Raman and Fourier transform infrared (FTIR) spectra to confirm the presence of structural water. The h-Na<sub>x</sub>WO<sub>3+x/2·</sub>yH<sub>2</sub>O was subjected to heat treatment at 300 °C to analyze the effects of heating on the material. X-ray photoelectron spectroscopy (XPS) and diffuse reflectance ultraviolet-visible absorption spectra (UV-vis) indicated the occurrence of diffusion on the surface-bulk of Na<sup>+</sup> ions, and the band gap changed from 2.7 eV to 2.4 eV with heating. Electrochromic devices based on h-Na<sub>x</sub>WO<sub>3+x/2·</sub>yH<sub>2</sub>O were constructed. The sample without heat treatment and with structural water loss presented the electrochromic efficiency of 127.5 cm<sup>2</sup>/C and 561.8 cm<sup>2</sup>/C, respectively, evidencing the creation of vacancies for the intercalation of lithium ions from heat treatment. Also, density functional theory calculations were performed to study the lithium diffusion process in the interstitial Na-WO<sub>6</sub> channels of sodium tungsten bronze.</p><h3>Graphical abstract</h3>\\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":665,\"journal\":{\"name\":\"Journal of Solid State Electrochemistry\",\"volume\":\"29 5\",\"pages\":\"1639 - 1651\"},\"PeriodicalIF\":2.6000,\"publicationDate\":\"2024-10-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Solid State Electrochemistry\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10008-024-06110-2\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ELECTROCHEMISTRY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Solid State Electrochemistry","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10008-024-06110-2","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ELECTROCHEMISTRY","Score":null,"Total":0}
Bronze sodium tungsten precipitation synthesis and lithium intercalation
Hexagonal sodium tungsten bronze (h-NaxWO3+x/2·yH2O) nanorods were obtained by simple acid precipitation in 16 min at 97 °C, evidencing the saving of time and energy. The W-OH2 modes were observed in Raman and Fourier transform infrared (FTIR) spectra to confirm the presence of structural water. The h-NaxWO3+x/2·yH2O was subjected to heat treatment at 300 °C to analyze the effects of heating on the material. X-ray photoelectron spectroscopy (XPS) and diffuse reflectance ultraviolet-visible absorption spectra (UV-vis) indicated the occurrence of diffusion on the surface-bulk of Na+ ions, and the band gap changed from 2.7 eV to 2.4 eV with heating. Electrochromic devices based on h-NaxWO3+x/2·yH2O were constructed. The sample without heat treatment and with structural water loss presented the electrochromic efficiency of 127.5 cm2/C and 561.8 cm2/C, respectively, evidencing the creation of vacancies for the intercalation of lithium ions from heat treatment. Also, density functional theory calculations were performed to study the lithium diffusion process in the interstitial Na-WO6 channels of sodium tungsten bronze.
期刊介绍：
The Journal of Solid State Electrochemistry is devoted to all aspects of solid-state chemistry and solid-state physics in electrochemistry.
The Journal of Solid State Electrochemistry publishes papers on all aspects of electrochemistry of solid compounds, including experimental and theoretical, basic and applied work. It equally publishes papers on the thermodynamics and kinetics of electrochemical reactions if at least one actively participating phase is solid. Also of interest are articles on the transport of ions and electrons in solids whenever these processes are relevant to electrochemical reactions and on the use of solid-state electrochemical reactions in the analysis of solids and their surfaces.
The journal covers solid-state electrochemistry and focusses on the following fields: mechanisms of solid-state electrochemical reactions, semiconductor electrochemistry, electrochemical batteries, accumulators and fuel cells, electrochemical mineral leaching, galvanic metal plating, electrochemical potential memory devices, solid-state electrochemical sensors, ion and electron transport in solid materials and polymers, electrocatalysis, photoelectrochemistry, corrosion of solid materials, solid-state electroanalysis, electrochemical machining of materials, electrochromism and electrochromic devices, new electrochemical solid-state synthesis.
The Journal of Solid State Electrochemistry makes the professional in research and industry aware of this swift progress and its importance for future developments and success in the above-mentioned fields.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
