Research

Re-search is not always about doing new things, but it is also about doing old things in a new way

A few areas that I am currently working on. One can also refer to my publication list for a more complete picture of what I've done in the past and where I may be heading in the near future.

Stable anionic redox chemistry in Li-rich cathodes

Coming soon.

Designing materials based on partial ordered/disordered cathodes

Coming soon.

Understanding the potentials of cation-disordered rocksalt (DRX) cathodes

Coming soon.

Designing oxide-based perovskites for Energy applications

Coming soon.

Li-excess materials for rechargeable secondary battery & Oxygen Evolution Reaction

The rational design of bifunctional electrocatalyst through simple synthesis with high activity remains a challenging task. Herein, Na/Al codoped Li-excess Li-Ru-Ni-O layered electrodes are demonstrated with defects/dislocations as an efficient bifunctional electrocatalyst toward lithium-ion battery (LIB) and oxygen evolution reaction (OER). Toward LIB cathode, specific capacity of 173 mAh g⁻¹ (0.2C-rate), cyclability (>95.0%), high Columbic efficiency (99.2%), and energy efficiency (90.7%) are achieved. The codoped electrocatalyst has exhibited OER activity at a low onset potential (270 mV@10 mA cm⁻²), with a Tafel slope 69.3 mV dec⁻¹, and long-term stability over 36 h superior to the undoped and many other OER electrocatalysts including the benchmark IrO₂. The concurrent doping resides in the crystal lattice (where Na shows the pillaring effect to improve facile Li diffusion), Al improves the stabilization of the layered structure, and defective structures provide abundant active sites to accelerate OER reactions.

Related paper: Small 17(18), 202005605 (2021)

Page updated

Google Sites

Report abuse