Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Design of Uniform Hollow Carbon Nanoarchitectures: Different Capacitive Deionization between the Hollow Shell Thickness and Cavity Size
Advanced Science ( IF 14.3 ) Pub Date : 2023-01-19 , DOI: 10.1002/advs.202206960 Yijian Tang 1 , Jiani Ding 1 , Wenxuan Zhou 1 , Shuai Cao 1 , Feiyu Yang 1 , Yangyang Sun 1 , Songtao Zhang 1 , Huaiguo Xue 1 , Huan Pang 1
Advanced Science ( IF 14.3 ) Pub Date : 2023-01-19 , DOI: 10.1002/advs.202206960 Yijian Tang 1 , Jiani Ding 1 , Wenxuan Zhou 1 , Shuai Cao 1 , Feiyu Yang 1 , Yangyang Sun 1 , Songtao Zhang 1 , Huaiguo Xue 1 , Huan Pang 1
Affiliation
|
Carbon-based materials with high capacitance ability and fast electrosorption rate are ideal electrode materials in capacitive deionization (CDI). However, traditional carbon materials have structural limitations in electrochemical and desalination performance due to the low capacitance and poor transmission channel of the prepared electrodes. Therefore, reasonable design of electrode material structure is of great importance for achieving excellent CDI properties. Here, uniform hollow carbon materials with different morphologies (hollow carbon nanospheres, hollow carbon nanorods, hollow carbon nano-pseudoboxes, hollow carbon nano-ellipsoids, hollow carbon nano-capsules, and hollow carbon nano-peanuts) are reasonably designed through multi-step template method and calcination of polymer precursors. Hollow carbon nanospheres and hollow carbon nano-pseudoboxes exhibit better capacitance and higher salt adsorption capacity (SAC) due to their stable carbonaceous structure during calcination. Moreover, the effects of the thickness of the shell and the size of the cavity on the CDI performance are also studied. HCNSs-0.8 with thicker shell (≈20 nm) and larger cavity (≈320 nm) shows the best SAC value of 23.01 mg g−1 due to its large specific surface area (1083.20 m2 g−1) and rich pore size distribution. These uniform hollow carbon nanoarchitectures with functional properties have potential applications in electrochemistry related fields.
中文翻译：
均匀中空碳纳米结构的设计：中空壳厚度和空腔尺寸之间的不同电容去离子
碳基材料具有高电容能力和快速电吸附速率，是电容去离子（CDI）中理想的电极材料。然而，传统碳材料由于制备的电极电容低、传输通道差，在电化学和海水淡化性能方面存在结构限制。因此，合理设计电极材料结构对于获得优异的CDI性能至关重要。这里，通过多步合理设计不同形貌的均匀空心碳材料（空心碳纳米球、空心碳纳米棒、空心碳纳米赝盒、空心碳纳米椭球、空心碳纳米胶囊和空心碳纳米花生）聚合物前体的模板法和煅烧。空心碳纳米球和空心碳纳米赝盒由于其在煅烧过程中稳定的碳质结构而表现出更好的电容和更高的盐吸附能力（SAC）。此外，还研究了壳体厚度和腔体尺寸对CDI性能的影响。具有较厚壳层（约20 nm）和较大空腔（约320 nm）的HCNSs-0.8由于其较大的比表面积（1083.20 m 2 g -1 ）和丰富的孔径分布，显示出最佳SAC值23.01 mg g -1 。这些具有功能特性的均匀中空碳纳米结构在电化学相关领域具有潜在的应用。
更新日期：2023-01-19
中文翻译：
均匀中空碳纳米结构的设计：中空壳厚度和空腔尺寸之间的不同电容去离子
碳基材料具有高电容能力和快速电吸附速率，是电容去离子（CDI）中理想的电极材料。然而，传统碳材料由于制备的电极电容低、传输通道差，在电化学和海水淡化性能方面存在结构限制。因此，合理设计电极材料结构对于获得优异的CDI性能至关重要。这里，通过多步合理设计不同形貌的均匀空心碳材料（空心碳纳米球、空心碳纳米棒、空心碳纳米赝盒、空心碳纳米椭球、空心碳纳米胶囊和空心碳纳米花生）聚合物前体的模板法和煅烧。空心碳纳米球和空心碳纳米赝盒由于其在煅烧过程中稳定的碳质结构而表现出更好的电容和更高的盐吸附能力（SAC）。此外，还研究了壳体厚度和腔体尺寸对CDI性能的影响。具有较厚壳层（约20 nm）和较大空腔（约320 nm）的HCNSs-0.8由于其较大的比表面积（1083.20 m 2 g -1 ）和丰富的孔径分布，显示出最佳SAC值23.01 mg g -1 。这些具有功能特性的均匀中空碳纳米结构在电化学相关领域具有潜在的应用。
京公网安备 11010802027423号