专注于工况条件下纳米材料微观结构演变的高时空分辨原位研究工作，例如在原子尺度上原位揭示纳米材料在气相、液相条件下的结构演变；在加热条件下的表面原子运动及相变等。2018年至今，已在Nature Communications、Nano letters、ACS Catalysis、Physical Review B、Scripta Materialia、Nanoscale等期刊上发表40余篇论文，被国际同行引用1600余次。负责球差电镜中心的原位电子显微技术，建立了包括原位加热、原位气相、原位液相、原位电学和冷冻等尖端电子显微技术。结合球差校正电子显微技术，发展出了一系列有特色的研究方法和实验技术。

1钯纳米颗粒常压储氢行为原子水平的原位研究 天津市自然科学基金

2月球样品的透射电镜结构分析 中国科学院地质与地球物理研究所

3微结构靶材料原位检测 中国工程物理研究院激光聚变研究中心

4石墨烯及其复合材料结构与性能的原位研究 北京航空航天大学

5煤炭“基因组”检测工程 北京天鑫众纳烯碳科技有限公司

1 Gu Lin†; Yuan Wenjuan†; Yang Yufeng; Shen Yongli*; An Changhua*; Xi Wei*. In Situ TEM Tracking of Disconnection Motion and Atomic Cooperative Reorientation in the Oriented Attachment of Pt Nanoparticles. Nano Letters, 24, 5618–5624 (2024).

2 Shengnan Yue†, Wenjuan Yuan†, Ziliang Deng, Wei Xi* and Yongli Shen*. In Situ TEM Observation of the Atomic Transport Process during the Coalescence of Au Nanoparticles. Nano Letters, 20, 8115–8121 (2022).

3 Xingang Hou, Kai Wang, Mengke Ge, Wei Xi*, Wenjuan Yuan* and Yongli Shen*. Complete surface reconstruction of nanoporous gold during CH4 pyrolysis. Nanoscale, 14, 8023 (2022).

4 Deng Ziliang, Zhu Youqing, Yuan Wenjuan*, Xi Wei*. Strain evolution in nanoporous gold during catalytic CH4 pyrolysis by in situ gas-phase transmission electron microscopy. Scripta Matertialia, 204, 114146 (2021).

5 Yue Shengnan, Shen Yongli, Deng Ziliang, Yuan Wenjuan*, Xi Wei*. Coalescence and shape oscillation of Au nanoparticles in CO2 hydrogenation to methanol. Nanosclae, 13, 18218 -18225 (2021).

6 Wei Xi†, Kai Wang†, Yongli Shen†, Mengke Ge, Ziliang Deng, Yi Ding*, Guangzhi Hu* & Jun Luo*. Dynamic co-catalysis of Au single atoms and nanoporous Au for methane pyrolysis. Nature communications, 11, 1919 (2020).

7 Mengke Ge†, Wenjuan Yuan†, Kai Wang, Jia He*, Wei Xi* and Jun Luo. Anomalous detwinning in constrained Cu nanoparticles. Nanoscale, 12, 14831-14837 (2020).

8 Xiang Li†, Yongli Shen†, Mengke Ge, Ziliang Deng, Wenjuan Yuan*, Wei Xi*, Jun Luo. Visualization of Shallow-Groove Expansion of Au(111) Facet under Methane Pyrolysis. Advanced Materials Interfaces, 7, 2001245 (2020).

9 Min Hu, Jia He*, Ruijie Guo, Wenjuan Yuan, Wei Xi*, Jun Luo, Yi Ding. Visualizing oxidation of Cu nanoparticles at atomic resolution during the reverse water-gas shift reaction. Catalysis Communications, 146, 106129 (2020).

10 Rui Lang†, Wei Xi†, Jin-Cheng Liu, Yi-Tao Cui, Tianbo Li, Adam Fraser Lee, Fang Chen, Yang Chen, Lei Li, Lin Li, Jian Lin, Shu Miao, Xiaoyan Liu, Ai-Qin Wang, Xiaodong Wang, Jun Luo*, Botao Qiao*, Jun Li* & Tao Zhang. Non defect-stabilized thermally stable single-atom catalyst. Nature communications, 10, 234 (2019).

11 Xiong Liu†, Kun Ni†, Chaojiang Niu†, Ruiting Guo, Wei Xi*, Zhaoyang Wang, Jiashen Meng, Jiantao Li, Yanwu Zhu, Peijie Wu, Qi Li, Jun Luo, Xiaojun Wu*, and Liqiang Mai*. Upraising the O 2p orbital by integrating Ni with MoO2 for accelerating hydrogen evolution kinetics. ACS Catalysis, 9, 2275-2285 (2019).

12 Wenjuan Yuan†, Mengke Ge†, Kai Wang, Xingang Hou, Ning Liu, Ziliang Deng, Ruijie Guo, Siyu Liu, Yunfeng Zhao, Jia He*, Wei Xi*, Jun Luo and Yi Ding. Atomic-scale selectivity of hydrogen for storage sites in Pd nanoparticles at atmospheric pressure. Nanoscale, 11, 10198 (2019).

13 Kai Wang†, Haizhen Wu†, Wenjuan Yuan*, Wei Xi*, and Jun Luo. Simple physical preparation of single copper atom on amorphous carbon via Coulomb explosion. Nanoscale, 11, 7595-7599 (2019).

14 Liu Xijun†, Xi Wei†, Li Chao, Li Xibo, Shi Jing, Shen Yongli, He Jia, Zhang Lihan, Xie Lin, Sun Xiaoming, Wang Peng, Luo Jun*, Liu Li-Min*, Ding Yi*. Nanoporous Zn-doped Co3O4 sheets with single-unit-cell-wide lateral surfaces for efficient oxygen evolution and water splitting. Nano Energy. 4, 371-377 (2018).

15 Kai Wang†, Haizhen Wu, Mengke Ge, Xingang Hou, Ning Liu, Jia He*, Wei Xi*, and Jun Luo. Multilayer-by-Multilayer Melting of the Cu (200) Surface. Phys. Rev. B, 98, 045425 (2018).

16 Xi Wei, Ma Ruizhen, Wang Heng, Gao Zhen, Zhang Weiqing, Zhao Yunfeng*. Ultrathin Ag Nanowires Electrode for Electrochemical Syngas Production from Carbon Dioxide. ACS Sustainable Chemistry & Engineering, 6, 7687-7694 (2018).