摘要：As a promising anode material candidate for sodium-ion batteries,antimony(Sb)has attracted enormous research interest due to its high specific capacity and low sodiation ***,its dramatic volume expansion upon sodiation adversely affects its cycle *** have developed an oxidation-coating-reduction strategy for fabricating yolk-shell Sb@C rods from commercially available Sb *** particular,the thermal reduction of vaporized Sb_(2)O_(3) generates densely distributed Sb single atoms and clusters on the carbon *** sodiation process of the Sb@C sample was recorded through in situ transmission electron *** expansion of Sb particles was observed,and it was also revealed that the carbon shell could deform with the expanded Sb *** the intuitively understood advantage that internal voids can provide space for expansion of internal active materials,the deformability of carbon shells can add further ability to withstand the volume *** two structural merits of the yolk-shell construction enable the Sb@C material to deliver an enhanced cycle *** reversible capacity exceeds 620 mA h g^(−1) at 0.1C,with an initial coulombic efficiency of up to 84.9%,and about 95%of the capacity in the charging voltage profile is delivered below 1.0 V ***+/*** performance metrics are very promising for potential practical applications.

摘要：项目以广西盘龙柳江大桥斜拉桥为研究对象,利用层次分析法(Analytic Hierarchy Process,AHP)对其结构安全风险进行了系统性的评估。斜拉桥由于其复杂的结构形式和多样的外部环境影响,面临多重安全风险。为此,本文构建了针对该桥梁的层次分析结构,将风险因素划分为结构设计、材料性能和环境影响等关键准则。通过专家打分和判断矩阵构建,计算出各风险因素的相对权重,并进行一致性检验。综合评估结果表明,斜拉索疲劳和断裂风险、桥塔稳定性以及主梁的抗弯抗扭性能是影响盘龙柳江大桥斜拉桥安全的主要因素。进一步提出了相应的安全管理对策与优化策略,包括加强材料选择与设计优化、建立动态风险评估与预警机制、应用数字孪生技术等,以确保桥梁的长期稳定运营。研究结果不仅验证了层次分析法在桥梁安全风险评估中的有效性,还为类似桥梁的设计、维护及管理提供了理论支持和实践指导。