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Bhuvana Modachur Sivakumar

Bhuvana Modachur Sivakumar

Pacific Northwest National Laboratory
PO Box 999
Richland, WA 99352
(509) 371-6565

Biography

Bhuvana Sivakumar received her MS and PhD degrees in Physics from Bharathiar University, India. After completing her PhD in 2006, she was awarded postdoctoral fellowship by Technical University of Darmstadt, Germany, where her work focused on chemical synthesis of phosphate/oxide based nano-crystalline materials for energy storage applications. Her work also focused on analyzing electrode/electrolyte interfacial processes in Li-ion and Li-metal batteries using in situ XPS and SRXPS (Synchrotron radiation XPS) at BESSY (Berlin Electron Storage Ring Society for Synchrotron Radiation). She joined PNNL as a postdoctoral researcher in 2010 and worked till 2011 focusing on XPS analysis of Li-ion and redox flow battery materials. After taking a career break, now Bhuvana joined as a Scientist at PNNL, and currently her work is focused on structural and chemical characterization of energy storage materials.

Research Interests

  • Electronic and structural evolution of metal oxides under electrochemical conditions
  • Electronic to meso-scale structural correlation of heterogeneous interfacial structure
  • Predictive understanding of two-dimensional structural materials functional properties
  • Lithium-ion battery, redox flow batteries, catalysis and ultra-capacitors

Education and Credentials

  • Ph.D., in Physics, Bharathiar University, India
  • M.Sc., in Physics, Bharathiar University, India
  • B.Sc., in Physics, Bharathiar University, India

Awards and Recognitions

  • Selected as distinguished research scholar to attend young physicists workshop organized by International Center for Theoretical Physics (ICTP) at Trieste, Italy.
  • Best Poster presentation award - International Conference on Electrochemical Power Systems, Hyderabad.
  • Travel grant award from Institute of Physics (IOP), London to attend 9th Asian conference on solid state ionics held at South Korea.
  • University Research Fellow Scholarship awarded by Bharathiar University 2004.

PNNL Publications

2024

  • Nguyen D., V. Prabhakaran, L. Kovarik, G. Alexander, J. Cabana, J. Connell, and J.Z. Hu, et al. 2024. "Structural and Chemical Evolutions of a Magnesium Vanadium Oxide Cathode Under Electrochemical Cycling in Magnesium Batteries." Nano Energy 128, no. Part B:Art. No. 109939. PNNL-SA-194303. doi:10.1016/j.nanoen.2024.109939
  • Patel R.L., Q. Huang, B. Li, A.J. Crawford, B. Modachur Sivakumar, C. Song, and Z. Jiang, et al. 2024. "Reliability Studies of Vanadium Redox Flow Batteries: Upper Limit Voltage Effect." RSC Advances 14, no. 46:34381 - 34389. PNNL-SA-200211. doi:10.1039/d4ra04713c

2023

2022

  • Xiao J., C.S. Anderson, X. Cao, H. Chang, R. Feng, Q. Huang, and Y. Jin, et al. 2022. "Perspective - Electrochemistry in Understanding and Designing Electrochemical Energy Storage Systems." Journal of the Electrochemical Society 169, no. 1:Art. No. 010524. PNNL-SA-167756. doi:10.1149/1945-7111/ac4a55

2021

  • Modachur Sivakumar B., V. Prabhakaran, K. Duanmu, E.C. Thomsen, B. Berland, N. Gomez, and D.M. Reed, et al. 2021. "Long-Term Structural and Chemical Stability of Carbon Electrodes in Vanadium Redox Flow Battery." ACS Applied Energy Materials 4, no. 6:6074-6081. PNNL-SA-160926. doi:10.1021/acsaem.1c00912
  • Rodriguez Perez I.A., H. Chang, M.R. Fayette, B. Modachur Sivakumar, D. Choi, X. Li, and D.M. Reed. 2021. "Mechanistic Investigation of Redox Processes in Zn-MnO2 battery in Mild Aqueous Electrolytes." Journal of Materials Chemistry A 9, no. 36:20766-20775. PNNL-SA-163119. doi:10.1039/D1TA05022B

2020

  • Zhang Y., Y. Lin, L. He, V. Murugesan, G. Pawar, B. Modachur Sivakumar, and H. Ding, et al. 2020. "Dual Functional Ni3S2@Ni Core-Shell Nanoparticles Decorating Nanoporous Carbon as Cathode Scaffolds for Lithium-Sulfur Battery with Lean Electrolytes." ACS Applied Energy Materials 3, no. 5:4173-4179. PNNL-SA-151687. doi:10.1021/acsaem.0c00568

2011

  • Vijayakumar M., B.M. Sivakumar, P. Nachimuthu, B. Schwenzer, S. Kim, Z. Yang, and J. Liu, et al. 2011. "Spectroscopic Investigations of the Fouling Process on Nafion Membranes in Vanadium Redox Flow Batteries." Journal of Membrane Science 366, no. 1-2:325-334. PNNL-SA-73754. doi:10.1016/j.memsci.2010.10.018

Energy and Environment

Core Research Areas

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