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Welcome to the Energy Technology Laboratory!

    The Energy Technology Lab is located in the Department of Materials Science and Engineering, City University of Hong Kong. We are a materials chemistry lab with specific interests in electrochemical systems for energy conversion and storage, nano-electronics and bioelectronics. combining our expertise in materials chemistry, nanomaterials, and electrochemistry, we aim to address some fundamental and technologically-important questions in environmental and energy conversion, catalysis, CO2 reduction.

    Our ultimate goals is to be able to design new materials with useful properties for next-generation energy applications [e.g., rechargeable batteries and electro-catalysis] as well as contributing to the fundamental progress of materials chemistry and physics, as shown in the figure below. The PI’s interdisciplinary research experiences in universities, national labs (Lawrence Berkeley National Laboratory, Nanyang Technological University, Singapore) and company (Applied Materials Inc.) have prepared our group for pursuing these goals. To achieve them, it is essential to analyze and understand the materials and processes at the atomic level. In-situ and ex-situ multimodal characterizations are ideal tools in this quest, as they are able to determine the atomic structure, electronic properties, reaction energetics etc.

Selected Publications:

[1] MnO2-based materials for environmental applications, Ruijie Yang, Yingying Fan, Ruquan Ye, Yuxin Tang, Xiehong Cao*, Zongyou Yin*, Zhiyuan Zeng*, Adv. Mater. 2021, 33, 2004862. Link.

[2] A Safe Flexible Self-Powered Wristband System by Integrating Defective MnO2-x Nanosheet-Based Zinc-Ion Batteries with Perovskite Solar Cells J. Zhao, Z. Xu, Z. Zhou, S. Xi, Y. Xia, Q. Zhang, L. Huang, L. Mei, Y. Jiang, J. Gao*, Zhiyuan Zeng*, C. Tan*, ACS Nano, 2021, DOI: 10.1021/acsnano.1c03341. Link.

​[3] Highly efficient photocatalytic hydrogen evolution and simultaneous formaldehyde degradation over Z-scheme ZnIn2S4-NiO/BiVO4 hierarchical heterojunction under visible light irradiation, R. Yang, Q. Chen, Y. Ma, R. Zhu*, Y. Fan, J. Huang, H. Niu, Y. Dong, D. Li, Y. Zhang, L. Mei, B. Chen*, Zhiyuan Zeng*Chem. Eng. J., 2021, 423, 130164. Link.

[4] InVO4-based photocatalysts for energy and environmental applications, R. Yang, Y. Zhang, Y. Fan, R. Wang, R. Zhu, Y. Tang*, Z. Yin*, Zhiyuan Zeng*, Chem. Eng. J., 2021, Link.

[5] Size-Selective Synthesis of Platinum Nanoparticles on Transition-Metal Dichalcogenides for Hydrogen Evolution Reaction, Liang Mei, Xiaoping Gao, Zhan Gao, Qingyong Zhang, Xinge Yu, Andrey L. Rogach, Zhiyuan Zeng*Chem. Commun. 2021, 57, 2879-2882. (Invited paper for “Emerging Investigators” collection) Link.

[6] Intercalation and Exfoliation Chemistry of Transition Metal Dichalcogenides, Qingyong Zhang,† Liang Mei,† Xiehong Cao, Yuxin Tang, Zhiyuan Zeng*, J. Mater. Chem. A, 2020, 8, 15417-15444. (Invited paper for “Emerging Investigators” collection) Link.

[7] Electrode Roughness Dependent Electrodeposition of Sodium at the Nanoscale, Zhiyuan Zeng, Pallab Barai, Seung-Yong Lee, Juan Yang, Xiaowei Zhang, Wenjing Zheng, Yi-Sheng Liu, Karen C. Bustillo, Peter Ercius, Jinghua Guo, Yi Cui, Venkat Srinivasan, Haimei Zheng, Nano Energy, 2020, 72, 104721. Link.

[8] Formation of two-dimensional transition metal oxide nanosheets with nanoparticles as intermediates, Juan Yang,  Zhiyuan Zeng, Jun Kang, Sophia Betzler, Cory Czarnik, Xiaowei  Zhang, Colin Ophus, Chang Yu, Karen  Bustillo, Ming Pan, Jieshan Qiu, Lin-Wang Wang, Haimei Zheng, Nat. Mater. 2019, 18, 970-976. Link.

[9] Visualization of Crystalization and Chemical Reaction Dynamics in Liquids Using TEM, Zhiyuan Zeng, Wenjing Zheng, Haimei Zheng, Acc. Chem. Res. 2017, 50, 1808-1817. Link.

[10] In Situ Study of Lithiation and Delithiation of MoS2 Nanosheets Using Electrochemical Liquid Cell Transmission Electron Microscopy, Zhiyuan Zeng, Xiaowei Zhang, Karen Bustillo, Kaiyang Niu, Christoph Gammer, Jun Xu, Haimei Zheng, Nano Lett. 2015, 15, 5214-5220. Link.

[11] Visualization of Electrode-Electrolyte Interfaces in LiPF6/EC/DEC Electrolyte for Lithium Ion Batteries via In-Situ TEM, Zhiyuan Zeng, Wen-I Liang, Hong-Gang Liao, Huolin L Xin, Yin-Hao Chu, Haimei Zheng, Nano Lett. 2014, 14, 1745-1750. (Cited Times: 250Link.
  Highlighted in LBNL MSD News
  Highlighted in Nat. Rev. Chem. 2019” “Science 2017” “Science 2017” “Science 2015” “Nat. Nanotechnol. 2017”  “Chem. Rev. 2017

[12] Growth of noble metal nanoparticles on single-layer TiS2 and TaS2 nanosheets for hydrogen evolution reaction, Zhiyuan Zeng, Chaoliang Tan, Xiao Huang, Shuyu Bao, Hua Zhang, Energ. Environ. Sci. 2014, 7, 797-803. (Cited Times: 281) Link.

[13] Solution-phase epitaxial growth of noble metal nanostructures on dispersible single-layer MoS2 nanosheets, Xiao Huang,† Zhiyuan Zeng,† Shuyu Bao, Mengfei Wang, Xiaoying Qi, Zhanxi Fan, Hua Zhang, Nat. Commun. 2013, 4, 1444. (†equal contribution) (Cited Times: 652) Link.

[14] An Effective Method for the Fabrication of Few-Layer-Thick Inorganic Nanosheets, Zhiyuan Zeng, Ting Sun, Jixin Zhu, Xiao Huang, Zongyou Yin, Gang Lu, Zhanxi Fan, Qingyu Yan, Huey Hoon Hng, Hua Zhang, Angew. Chem. Int. Ed. 2012, 51, 9052-9056. (Cited Times: 485) Link.

[15] Fabrication of Graphene Nanomesh by Using an Anodic Aluminum Oxide Membrane as a Template, Zhiyuan Zeng, Xiao Huang, Zongyou Yin, Hong Li, Yang Chen, Hai Li, Qing Zhang, Jan Ma, Freddy Boey, Hua Zhang, Adv. Mater. 2012, 24, 4138-4142. (Cited Times: 194) Link.

[16] Single-Layer Semiconducting Nanosheets: High-Yield Preparation and Device Fabrication, Zhiyuan Zeng, Zongyou Yin, Xiao Huang, Hai Li, Qiyuan He, Gang Lu, Freddy Boey, Hua Zhang, Angew. Chem. Int. Ed. 2011, 50, 11093-11097. (Cited Times: 1520Link.
  Highlighted in "Materials Views", "Materials Views China"
  Highlighted in "Nat. Mater. 2020" "Nature 2018" “Science 2013” “Nat. Mater. 2013” “Nat. Nanotechnol. 2012” “Nat.Chem. 2013”