Mg-based materials have been intensively studied for hydrogen storage applications due to their high energy density up to 2600 Wh/kg or 3700 Wh/L. However, the Mg-based materials with poor kinetics and the necessity for a high temperature to achieve 0.1 MPa hydrogen equilibrium pressure limit the applications in the onboard storage in Fuel cell vehicles (FCVs). Over the past decades, many methods have been applied to improve the hydriding/dehydriding (H/D) kinetics of Mg/MgH2 by forming amorphous or nanosized particles, adding catalysts and employing external energy field, etc. However, which method is more effective and the intrinsic mechanism they work are widely differing versions. The hydrogenation and dehydrogenation behaviors of Mg-based alloys analyzing by kinetic models is an efficient way to reveal the H/D kinetic mechanism. However, some recently proposed models with physical meaning and simple analysis method are not known intimately by researchers. Therefore, this review focuses on the enhancement method of kinetics in Mg-based hydrogen storage materials and introduces the new kinetic models.

10.1016/j.jma.2018.12.001

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Efficient Proton Conduction through [N···X···N]⁺ Halogen Bond Coordination in Halogen‐Bonded Organic Frameworks

Advanced Functional Materials (2025)

Qi Zhao Siyi Lin Penghao Sun Ya Lu Qian Li

Abstract Advancing anhydrous proton‐conducting materials is essential for the fabrication of high‐temperature (>373 K) polymer electrolyte membrane fuel cells (HT‐PEMFCs) and remains a significant challenge. Herein, halogen‐bonded organic frameworks linked by [N···I··N] + interactions are reported as outstanding high‐temperature conductive materials. By incorporating carbazole groups into the monomers, two highly crystalline halogen‐bonded organic frameworks ( XOF‐CSP/CTP ) are constructed. These XOFs exhibit a high intrinsic conductivity (σ = 1.22 × 10 −3 S cm −1 ) under high‐temperature anhydrous conditions. Doping the XOFs with H 3 PO 4 allows the nitrogen sites and I + sites on the pore walls to stabilize and tightly confine the H 3 PO 4 network within the porous framework through hydrogen bonding, thereby enhancing proton conductivity under anhydrous conditions (σ = 1.02 × 10 −2 S cm −1 ). Temperature‐dependent curves and theoretical calculations indicate that proton transport is governed by a low‐energy barrier hopping mechanism. These materials exhibit excellent stability and maintain high proton conductivity across a broad temperature range. This work provides a new platform for designing anhydrous proton‐conducting materials with significant potential as high‐temperature proton exchange membranes.

Anhydrous

Proton Transport

10.1002/adfm.202421755

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Theoretical Investigation on Aging Precipitation Mechanisms and Precipitation Strengthening Effect of Mg-Gd Alloy

Journal of Solid State Chemistry (2025)

Xia Shao Zimeng Tan Xia Lei Yanlin Guo Shaoxun Li

Precipitation hardening

10.1016/j.jssc.2025.125285

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Mg（2-x）MxNi氢化物储氢性能的一种计算方法

稀有金属材料与工程 (2005)

Qian Li 蒋利军林勤周国治詹锋

通过对Mg(2-x)MxNi(M=Ti,Ag,Al)储氢合金材料的焓变、熵变、吸氢量与组成和键参数之间关系的分析,建立了焓变、熵变和吸氢量的半经验数学模型,得出影响焓变、熵变、平衡氢压和吸氢量的主要因素及其显著性的大小.结果表明:在所研究的合金体系中,电负性差△X和弹性模量G增大,则氢化物的生成焓△H0负值减小,原子尺寸δ增大时,氢化物的△H0负值增大.氢化物的△S0随着△X增大而增大.合金弹性模量、原子尺寸、电荷半径和温度越高,材料的储氢量越大,而电子密度越大,材料的储氢量反而越小.

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全球性大学：高等教育发展的新趋势——以纽约大学为例

国内高等教育教学研究动态 (2013)

Qian Li

随着全球化浪潮的席卷和信息技术的迅速发展,高等教育的国际化日趋明显。在全球化背景下,美国纽约大学也在积极寻求扩张之路。纽约大学通过在海外设立学习中心、分校以及合作办学等途径不断为实现其成为全球性大学的愿景而努力。

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Nickel-based tungstate supported with different forms of SnS2 to achieve improved photocatalytic performance

Journal of Alloys and Compounds (2023)