Academic history: 
B.Sc (2014): B.Sc. honours in Chemistry from Ramjas College, University of Delhi, India.
M.Sc. (2016): Master's degree in Chemistry with an Inorganic specialization from the University of Delhi, India. 
Ph.D. (2022): Ph.D. in Chemistry (Nanoscience and Nanotechnology) from the Department of Chemistry, University of Delhi, India.

Research area:
Material synthesis (Hydrothermal, Colloidal and Sol-gel), Characterization ( XRD, FTIR, Raman, TGA-DTA, TEM-STEM-HAADF, XPS, AFM, SEM-EDAX), Application (Energy storage, and Conversion).

Publications: 
1. L. Kumar, H. Chauhan, N. Yadav, N. Yadav, S. A Hashmi, S. Deka, Faster Ion Switching NiCo2O4Nanoparticle Electrode-Based Supercapacitor Device with High Performances and Long Cycling Stability. ACS Appl. Energy Mater. 2018, 1, 6999-7006. Impact factor (2021): 6.959.

2. B. Antil, L. Kumar, K. P. Reddy, C. S. Gopinath, S. Deka, Direct Thermal Polymerization Approach toN-Rich Holey Carbon Nitride Nanosheets and Their Promising Photocatalytic H2 Evolution and Charge-Storage Activities, ACS Sust. Chem. Eng. 2019, 7, 9428-9438. Impact factor (2021): 9.224.

3. L. Kumar, P. K. Boruah, M. R. Das, S. Deka, Superbending (0–180°) and High-Voltage OperatingMetal-Oxide-Based Flexible Supercapacitor. ACS Appl. Mater. Interfaces 2019, 11, 37665-37674. Impact factor (2021): 10.383.

4. L. Kumar, M. Chauhan, P. K. Boruah, M. R. Das, S.A. Hashmi, S. Deka, Coral-Shaped BifunctionalNiCo2O4 Nanostructure: A Material for Highly Efficient Electrochemical Charge Storage and Electrocatalytic Oxygen Evolution Reaction. ACS Appl. Energy Mater. 2020, 3, 6793-6804. Impact factor (2021): 6.959.

5. L. Kumar, P. K. Boruah, S. Borthakur, L. Saikia, M. R. Das, S. Deka, Cuco-Layered Double Hydroxide Nanosheet-Based Polyhedrons for Flexible Supercapacitor Cells. ACS Appl. Nano Mater. 2021, 4, 5250-5262. Impact factor (2021): 6.140.

6. B. Antil, L. Kumar, R. Ranjan, S. Shenoy, K. Tarafder, C.S. Gopinath, S. Deka, One-Dimensional Multichannel g-C3N4.7 Nanostructure Realizing an Efficient Photocatalytic Hydrogen Evolution Reaction and Its Theoretical Investigations, ACS Appl. Energy Mater. 2021, 4, 3118-3129. Impact factor (2021): 6.959.

7. J. Muhommad, L. Kumar, P. K. Baruah, M. R. Das, S. Deka, All‐Solid‐State Flexible Symmetric Supercapacitor Based on Morphology Oriented Amorphous Cu−Co−B Alloy Nanosheets for Energy Storage. Batteries & Supercaps, 2022, 5. Impact factor (2021): 6.043.

8. L. Kumar, B. Antil, A. Kumar, M. R. Das, S. Deka, An Insight into Superior and Stable Electrocatalytic Oxygen Evolution Reaction by One-Dimensional FeCoP colloidal nanostructure, ACS Appl. Mater. Interfaces 2022, 14, 4, 5468-5477. Impact factor (2021): 10.383.

9. L. Kumar, B. Antil, M. R. Das, S. Deka, N-Doped Graphene Modulated N-Rich Carbon Nitride Realizing a Promising All-Solid-State Flexible Supercapacitor, J. Energy Storage 2022, 54, 104731. Impact factor (2021): 8.9.

10. B. Antil, L. Kumar, S. Deka, Incorporating NiCoP into Hollow Rings of ZnCo-Metal-Organic Frameworks to Deliver Platinum Co-Catalyst Like Visible-Light Driven Hydrogen Evolution Activity, ACS Appl. Energy Mater. 2022, 5, 11113. Impact factor (2021): 6.959.