HYBRID EVENT: You can participate in person at Baltimore, Maryland, USA or Virtually from your home or work.
Hao Wu, Speaker at Nanotechnology Conferences
Shandong University, China
Title : Adsorption energy tuning of metal-organic frameworks for improved Alkaline Ion batteries


Metal-organic framework (MOF), consisting of metal ions/clusters covalently bonded with organic linkers, provides a potential carbonaceous platform for alkaline ion batteries (AIBs). High-performance pristine MOF electrode remains rare, to which many prudent manipulations have been adopted to enhance the ion storage capability. 2D geometry engineering is favoured because the in-plane architecture is more compatible with planar π-conjugated delocalized ligands (e.g., graphene-analogues, phthalocyanines, and porphyrins), which embedded in MOF scaffolds could ensure reliable electron conductivity. Meanwhile, such architecture is conducive to alleviating structural crumple during (de)intercalation of metal ions. However, bulk MOFs are inclined to produce in the routine synthesis, as it lacks driving force for anisotropic growth. On the other hand, the adsorption energy of metal ions (ΔEa) in them is typically too low, which may result in the formation of metal clusters and irreversible metal ions diffusion, leading to capacity deterioration. Moreover, atoms at MOF node sites are normally coordination-saturated, which could be another reason for the ΔEa. Therefore, it is critical to design MOFs with favourable band alignments and electronic structures to achieve durable and high-capacity electrodes for AIBs. In this presentation, we will introduce a unique precursor, MXene, for MOF synthesis, by which tuneable 2D MOF nanosheets could be obtained. We propose two novel strategies to improves the ΔEa for enhanced ALB capacities, which are unlocking MOF nodes and construction of dual-conductive MOF@MXene heterogeneity. The advances of the proposed strategies have been consolidated by both experimental results and density functional theory (DFT) calculations, which offers valuable insights into the design of advanced MOF-based electrode materials for energy storage.


Dr. Wu studied Inorganic Chemistry at the Fudan University, China. He obtained his Ph.D. degree under the guidance of Prof. Gengfeng Zheng in 2016. He then joined the research group of Prof. Ghim Wei Ho at the National University of Singapore and Prof. Husam N. Alshareef at the King Abdullah University of Science and Technology as a postdoctoral fellow. He joined Shandong University as a full professor in 2020. Dr. Wu has published more than 30 research articles in SCI journals (h-index 22), with citations of more than 2,600 times.