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| 1 | Design considerations for re-functionalizing electrocatalytic materials显示文摘Electrocatalytic materials are a critical bottleneck for the development of new energy economics.This review summarizes the unique physicochemical properties of topological,magnetic,and rare earth materials and their applications in the functionalization of electrocatalysts.Topological materials have unique band structures and geometric structures,and the interface difference in charge transport structures can give rise to topological insulators,topological superconductors,and Dirac metals.Magnetic materials possess distinctive electron spin-splitting configurations,and varying spin strengths induce disparate impacts on the intermediate equilibrium adsorption capability.Rare earth materials have unique f-electron roaming properties,broad atomic radius,and f-orbital configurations,which typically confer notable advantages in oxygen reduction reactions.Furthermore,the catalytic performance exhibits significant differences under an external alternating electric,thermal,and magnetic field.These new materials show great potential in the re-functionalization of electrocatalytic materials and are expected to lead the development of the next generation of emerging energy materials. | ZHANG DanTong PENG Chao XUE DongFeng | 2023 | Science China(Technological Sciences)2023，66，12： | 0 |
| 2 | 基于二维α-MoO_(3)的多值存储特性及其双重导电机制研究显示文摘二维过渡金属氧化物材料的出现为高密度、低功耗的忆阻器研究提供了机会.其中,α-MoO_(3)作为功能层应用于忆阻器是最有希望的候选材料之一.然而,对α-MoO_(3)基忆阻器的导电机制的研究仍然不足.本工作中,我们制作了cross-point结构的α-MoO_(3)忆阻器,通过电极工程优化了其忆阻性能,并详细研究了其电阻转变机制.通过引入具有Ag/Ti叠层结构的混合电极实现了多值非挥发性存储性能.基于电流-电压曲线拟合和温度依赖特性测试结果,结合高分辨透射电镜微观表征,我们提出了α-MoO_(3)忆阻器的双重导电机制.在电阻转变过程中,阳离子和阴离子的迁移都对电导调制有贡献,两种由Ag和氧空位组成的导电丝同时存在.该器件展现出稳定的忆阻特性,超过103的耐久性、大于104的开关比ROFF/RON、多值存储特性和快速响应(10μs).本工作为二维α-MoO_(3)纳米片在高密度存储中的应用提供了理论基础. | 单欣 刘平 王芳 谢杨杨 魏俊青 马泽夏 石瑶 孙翰 鲁世豪 宋志棠 闫小兵 张楷亮 | 2023 | Science China Materials2023，66，12： | 0 |
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