ABSTRACT: The performance of electrochemical energy storage devices relies largely on a scrupulous design of nanoarchitectures and smart hybridization of active materials. Nanoarray electrodes are particularly investigated for power source in microelectronics, which requires high rates, high areal capacity/capacitance and long cycle stability. When the metal-ion battery electrode materials are designed into nanostructures (e.g., 1D array, 2D nanosheets), the pseudocapacitive effect may become dominating and can boost the high-rate performance. Our group has been actively working on nanoarray materials directly on conductive substrates as electrodes of metal-ion battery. In this talk, I will articulate our material design strategies for both vanadium based intercalation-type cathode (VOx, NVOPF) and tin based alloy-type anodes (SnS2, SnS, SnSe2), as well as di-chalcogenide MoSe2. Most of these materials are made to 2D structure and employed for Na-ion and Zn-ion batteries. These examples demonstrate clearly the contribution of extrinsic pseudocapacitance effect to the high-rate performance. I will present array-based full Na-ion hybrid batteries and Zn-ion batteries.References:
1. Dongliang Chao, et al., Adv. Mater. DOI: 10.1002/adma.201804833.
2. Ming Song, et al. Adv. Funct. Mater. Invited Review, DOI: 10.1002/adfm.201802564.
3. Dongliang Chao, et al, Adv. Mater. (2018), DOI: 10.1002/adma.201803181.
4. Dongming Xu, et al., Adv. Energy Mater. DOI: doi.org/10.1002/aenm.201702769.
5. Huanwen Wang, et al, Non-Aqueous Hybrid Lithium and Sodium Ion Capacitors, Adv. Mater. 1702093 (2017)
BIOGRAPHY: Dr. Fan is currently an associate professor at School
of Physical and Mathematical Sciences, Nanyang Technological University (NTU).
He received PhD from National University of Singapore in 2003, followed by
postdoc at Max-Planck-Institute of Microstructure Physics, Germany and
University of Cambridge. He joined in NTU as faculty since 2008. Dr. Fan’s
research has been focused on nanomaterials in energy conversion and storage
(including batteries, supercapacitors and electrocatalysts). He is also
interested in light emissions from low-dimensional semiconductors. He has authored and co-authored 218 journal
papers, with total citations of more than 18000 and H-index of 73. He is selected as Fellow of Royal Society of
Chemistry (FRSC), and recognized as Highly
Cited Researchers in 2016 - 2018. He is an editorial/advisory board member of 4 Wiley journals, 3 IOP
journals, and 3 Elsevier journals.