Li/Garnet Interface Stabilization by Thermal-Decomposition Vapor Deposition of an Amorphous Carbon Layer

Applying interlayers is the main strategy to address the large area specific resistance (ASR) of Li/garnet interface. However, studies on eliminating the Li₂CO₃ and LiOH interfacial lithiophobic contaminants are still insufficient. Here, thermal-decomposition vapor deposition (TVD) of a carbon modification layer on Li_6.75La₃Zr_1.75Ta_0.25O₁₂ (LLZTO) provides a contaminant-free surface. Owing to the protection of the carbon layer, the air stability of LLZTO is also improved. Moreover, owing to the amorphous structure of the low graphitized carbon (LGC), instant lithiation is achieved, and the ASR of the Li/LLZTO interface is reduced to 9 Ω cm². Lithium volatilization and Zr⁴⁺ reduction are also controllable during TVD. Compared with its high graphitized carbon counterpart (HGC), the LGC-modified Li/LLZTO interface displays a higher critical current density of 1.2 mA cm⁻², as well as moderate Li plating and stripping, which provides enhanced polarization voltage stability.     

耐盐吸附树脂对增塑剂DIBP生产废水预处理的研究

采用耐盐吸附树脂NDA-66预处理增塑剂DIBP生产废水,研究了不同吸附剂对DIBP生产废水中主要污染物邻苯二甲酸的吸附脱附效果。实验结果表明,5种吸附剂中,NDA-66树脂对邻苯二甲酸处理效果最好,且符合Freundlich方程和Langmuir方程;动态吸附脱附过程中,单柱吸附量为7BV,最佳流速为1.5BV/h,最佳脱附剂为1BV 8%Na OH+2BV蒸馏水,温度为328K,脱附率能达到99%以上;放大实验过程中,NDA-66耐盐吸附树脂对增塑剂DIBP生产废水中邻苯二甲酸吸附稳定性较好。     

Fluid–structure interaction-based aerodynamic modeling for flight dynamics simulation of parafoil system

Nonlinear Dynamics - Prediction of aerodynamic force is a crucial issue for parafoil canopy as the strong nonlinear fluid–structure interaction (FSI) between the flexible canopy material and...     

Oxygen-Bridged Indium-Nickel Atomic Pair as Dual-Metal Active Sites Enabling Synergistic Electrocatalytic CO2 Reduction

Single-atom catalysts offer a promising pathway for electrochemical CO₂ conversion. However, it is still a challenge to optimize the electrochemical performance of dual-atom catalysts. Here, an atomic indium-nickel dual-sites catalyst bridged by an axial oxygen atom (O-In-N₆-Ni moiety) was anchored on nitrogenated carbon (InNi DS/NC). InNi DS/NC exhibits superior CO selectivity with Faradaic efficiency higher than 90 % over a wide potential range from −0.5 to −0.8 V versus reversible hydrogen electrode (vs. RHE). Moreover, an industrial CO partial current density up to 317.2 mA cm⁻² is achieved at −1.0 V vs. RHE in a flow cell. In situ ATR-SEIRAS combined with theory calculations reveal that the synergistic effect of In-Ni dual-sites and O atom bridge not only reduces the reaction barrier for the formation of *COOH, but also retards the undesired hydrogen evolution reaction. This work provides a feasible strategy to construct dual-site catalysts towards energy conversion.     

电阻应变式传感器的研究

本文系统地介绍了电阻应变式传感器的组成原理及制作工艺,深入浅出地介绍了传感器由一种非电学量转化为电学量的详细过程,并用最小二乘法计算了单臂、半桥、全桥的性能参数,比较了三种电桥的优缺点.     

激光调制参数对光纤环型谐振腔光谱特性影响（英文）

谐振光学环型腔作为光学陀螺的核心敏感单元,其光学调制谱和与之对应的鉴频曲线的特性成为提高光学陀螺系统检测灵敏度的关键。为了研究光学陀螺的调制和鉴频谱线特性,优化陀螺性能,设计并搭建了实验测试系统,光纤环形谐振腔采用分光比为50∶50、直径17cm的保偏光纤,总长2.2m。使用直流高压放大器扫描窄线宽激光器(线宽小于1kHz)的压电转化模块,扫描频率和电压分别选取20Hz和1V,使用模拟比例积分电路进行锁频并反馈给激光器的压电转化模块,使激光器的输出频率跟踪谐振腔实时变化。研究分析了光纤环型谐振腔在两种情况下所对应的透射谱和鉴频曲线:第一种情况为调制电压分别为2V和4V,对应调制频率从100kHz到4 MHz变化;第二种情况为当调制频率为900kHz,调制电压从2V到10V变化。通过实验,得到了不同调制参数下光学陀螺谱线的谐振深度、半高全宽、线性带宽、动态范围、品质因数、标度因数以及对应的锁频精度七种物理量的详细变化情况,并进一步得到了静态测试条件下三种陀螺的最佳调制频率及与之所匹配的调制电压。为进一步研究激光调制对光纤环型谐振腔光谱的影响提供指导。     

Li/Garnet Interface Stabilization by Thermal‐Decomposition Vapor Deposition of an Amorphous Carbon Layer

Applying interlayers is the main strategy to address the large area specific resistance (ASR) of Li/garnet interface. However, studies on eliminating the Li₂CO₃ and LiOH interfacial lithiophobic contaminants are still insufficient. Here, thermal‐decomposition vapor deposition (TVD) of a carbon modification layer on Li_6.75La₃Zr_1.75Ta_0.25O₁₂ (LLZTO) provides a contaminant‐free surface. Owing to the protection of the carbon layer, the air stability of LLZTO is also improved. Moreover, owing to the amorphous structure of the low graphitized carbon (LGC), instant lithiation is achieved, and the ASR of the Li/LLZTO interface is reduced to 9 Ω cm². Lithium volatilization and Zr⁴⁺ reduction are also controllable during TVD. Compared with its high graphitized carbon counterpart (HGC), the LGC‐modified Li/LLZTO interface displays a higher critical current density of 1.2 mA cm^?2, as well as moderate Li plating and stripping, which provides enhanced polarization voltage stability.