Our group specializes in pioneering nanomaterials for electrochemical energy storage, focusing on novel battery concepts and deployment. Their work spans beyond traditional lithium-ion systems, exploring flexible batteries, supercapacitors, and high-temperature Li/Na-ion technologies using stable electrolytes and separators.  Our lab is known for  foundational work on “paper batteries,” also known as nano-composite papers, which are thin, flexible, and potentially biodegradable energy storage devices. Currently, our group has also initiated studies on the development of low-temperature batteries to operate at sub-zero temperatures.

Publications

Graphite Cone/Disc Anodes as Alternative to Hard Carbons for Na/K-Ion Batteries

Advanced Functional Materials

Click here to access the full paper

Flexible energy storage devices based on nanocomposite paper

Proceedings of the National Academy of Sciences

Click here to access the full paper

 

Publications

K. Kalaga, M.-T. F. Rodrigues, H. Gullapalli, G. Babu, L.M.R. Arava, P.M. Ajayan, “Quasi-Solid Electrolytes for High Temperature Lithium Ion Batteries”, ACS Applied Materials & Interfaces 7(46): 25777-25783 (2015). 

A. Vlad, N. Singh, C. Galande, P.M. Ajayan, “Design Considerations for Unconventional Electrochemical Energy Storage Architectures”, Advanced Energy Materials 5(19): (2015). 

G. Ye, Y. Gong, K. Keyshar, E.A.M. Husain, G. Brunetto, S. Yang, R. Vajtai, P.M. Ajayan, “3D Reduced Graphene Oxide Coated V2O5 Nanoribbon Scaffolds for High-Capacity Supercapacitor Electrodes”, Particle & Particle Systems Characterization 32(8): 817-821 (2015). 

S. Yang, Y. Gong, Z. Liu, L. Zhan, D. P. Hashim, L. Ma, R. Vajtai, P. M. Ajayan, Bottom-Up Approach Toward Single-Crystalline VO2-Graphene Ribbons as Cathodes for Ultrafast Lithium Storage. Nano Letters 13, 1596-1601 (2013). 

R.S. Borges, A. L. M. Reddy, M. T. F. Rodrigues, H. Gullapalli, K. Balakrishnan, G.G. Silva, P. M. Ajayan, Supercapacitor Operating At 200 Degrees Celsius. Scientific Reports 3 (2013). 

S. R. Gowda, V. Pushparaj, S. Herle, G. Girishkumar, J. G. Gordon, H. Gullapalli, X. Zhan, P. M. Ajayan, A. L. M. Reddy, Three-Dimensionally Engineered Porous Silicon Electrodes for Li Ion Batteries. Nano Letters 12, 6060-6065 (2012). 

N. Singh, C. Galande, A. Miranda, A. Mathkar, W. Gao, A. L. M. Reddy, A. Vlad, P. M. Ajayan, Paintable Battery. Scientific Reports 2 (2012). 

J. J. Yoo, K. Balakrishnan, J. Huang, V. Meunier, B. G. Sumpter, A. Srivastava, M. Conway, A. L. M. Reddy, J. Yu, R. Vajtai, P. M. Ajayan, Ultrathin Planar Graphene Supercapacitors. Nano Letters 11, 1423-1427 (2011). 

W. Gao, N. Singh, L. Song, Z. Liu, A. L. M. Reddy, L. Ci, R. Vajtai, Q. Zhang, B. Wei, P. M. Ajayan, Direct Laser Writing of Micro-Supercapacitors on Hydrated Graphite Oxide Films. Nature Nanotechnology, 6 (2011).