Solid State Ionics Lab

Indian Institute of Technology Indore

Neha

Neha Dagar

PhD Scholar

Department of Metallurgical Engineering and Materials Science
Indian Institute of Technology Indore

EDUCATION
  • 2024-nowPhD Scholar
    Indian Institute of Technology Indore
  • 2022BEd in Physical Science
    DCRUST, Sonipat, Haryana
  • 2020MSc Physics
    DCRUST, Sonipat, Haryana
  • 2018BSc Physical Sciences
    BPS Mahila Vishwavidyalaya, Haryana
RESEARCH INTERESTS
  • Alkali-ion Batteries Materials
  • Sodium-ion based Layered Oxide Cathodes
  • Electrochemical Impedance Spectroscopy
  • Operando Synchrotron XRD Studies
WORK EXPERIENCE
July 2026 – April 2027 Visiting Research Fellow
Yokohama National University, Japan
Jan 2025 – Now Teaching Assistant
MEMS Dept., IIT Indore
Jan 2024 – now UGC - Junior Research Fellow
MEMS Dept., IIT Indore
Oct 2023 – Dec 2023 Junior Research Fellow in SERB Project
MEMS Dept., IIT Indore
May 2023 – Sept 2023 Intern
Physics Dept., IIT Indore
Dec 2012 – 2014 Teacher
New Hindu High School, Sonipat (Haryana)
AWARDS & FELLOWSHIPS
  • LOTUS Fellowship, Japan Science and Technology Agency (2025)
  • International Travel Support, ANRF (2025)
  • Qualified Graduate Aptitude Test for Engineers (GATE) in Physics (2024)
  • National Eligibility Test (NET-JRF), in Physical Sciences (2023)
PUBLICATIONS

20. Neha Dagar, Samriddhi Saxena, Aniruddha Vibhute, Sonia Deswal, Pradeep Kumar, Karthik Chinnathambi, and Sunil Kumar, "Exposed {010} Crystal Surfaces Drive High Rate Performance and Cyclability in Air Stable P2-Type Cathode for Na-Ion Batteries", Small, e74346 (2026)


19. Samriddhi Saxena, Neha Dagar, Aniruddha Vibhute, Velaga Srihari, Karthik Chinnathambi, Sonia Deswal, Pradeep Kumar, Himanshu Kumar Poswal, and Sunil Kumar, "High-Entropy Engineering Regulates Na-ion Transport and Phase Evolution in O3-Type Layered Oxide Cathode", Batteries & Supercaps, 9: e70328 (2026)


18. Neha Dagar, Samriddhi Saxena, Sonia Deswal, Pradeep Kumar, Karthik Chinnathambi, and Sunil Kumar, "Synthesis, Structure, and Electrochemical Behaviour of O3-type NaNi1/3Mn1/3Al1/3O2", Electrochimica Acta, 541: 147374 (2025)


17. Samriddhi Saxena, Neha Dagar, Velaga Srihari, Karthik Chinnathambi, Asish Kumar Das, Pratiksha Gami, Sonia Deswal, Pradeep Kumar, Himanshu Kumar Poswal, and Sunil Kumar, "Compositional Tuning of Fe/Mn and Fe/Ni Ratios in P3-Type Cathodes Enables High Energy Density Sodium-Ion Batteries", Materials Today Energy, 53: 102048 (2025)


16. Neha Dagar, Samriddhi Saxena, Velaga Srihari, Sonia Deswal, Pradeep Kumar, and Sunil Kumar, "Biphasic P3/O3 driven excellent electrochemical behavior and structural stability in a dual pillar-ions sodium layered oxide cathode", Journal of Power Sources, 658: 238380 (2025)


15. Pratiksha Gami, Asish Kumar Das, Hari Narayanan Vasavan, Samriddhi Saxena, Neha Dagar, and Sunil Kumar, "PVDF-HFP/PVP-based Miscible Blend Electrolyte for Fast-Charging Lithium Metal Batteries", Electrochimica Acta, 536: 146840 (2025)


14. Samriddhi Saxena, Hari Narayanan Vasavan, Neha Dagar, Velaga Srihari, Asish Kumar Das, Pratiksha Gami, Sonia Deswal, Pradeep Kumar, Himanshu Kumar Poswal, and Sunil Kumar, "Strategic phase modulation in Na0.8(Mn-Fe-Ni)O2 system delivers high energy density and structural stability" Journal of Power Sources, 644: 237115 (2025)


13. Pratiksha Gami, Manish Badole, Asish Kumar Das, Hari Narayanan Vasavan, Samriddhi Saxena, Neha Dagar, and Sunil Kumar, "PVP Incorporation Effects on the Structural, Thermal, Electrical, and Mechanical Properties of PVDF-HFP/PVP Blend" Journal of Polymer Research, 32: 94 (2025)


12. Samriddhi Saxena, Hari Narayanan Vasavan, Neha Dagar, Karthik Chinnathambi, Velaga Srihari, Asish Kumar Das, Pratiksha Gami, Sonia Deswal, Pradeep Kumar, Himanshu Kumar Poswal, and Sunil Kumar, "Probing the Compositional and Structural Effects on the Electrochemical Performance of Na(Mn-Fe-Ni)O2 Cathodes in Sodium-Ion Batteries" Battery Energy, xx: e70018 (2025)


11. Neha Dagar, Samriddhi Saxena, Hari Narayanan Vasavan, Asish Kumar Das, Pratiksha Gami, Sonia Deswal, Pradeep Kumar, Karthik Chinnathambi, Vikram Rathee, and Sunil Kumar, "Ti-substitution Facilitating Anionic Redox and Cycle Stability in P2-type Na2/3Mn2/3Ni1/3O2 Na-ion Battery Cathode" Energy & Fuels, 39: 3348 (2025)


10. Hari Narayanan Vasavan, Manish Badole, Samriddhi Saxena, Velaga Srihari, Asish Kumar Das, Pratiksha Gami, Neha Dagar, Sonia Deswal, Pradeep Kumar, Himanshu Poswal, and Sunil Kumar, "Elevating the Concentration of Na ions to 1 in P2 Type Layered Oxide Cathodes", Advanced Functional Materials, 35: 2421733 (2025)


9. Pratiksha Gami, Asish Kumar Das, Manish Badole, Hari Narayanan Vasavan, Samriddhi Saxena, Neha Dagar, Sonia Deswal, Pradeep Kumar, Abhilash Dwivedi, Himanshu Kumar Poswal, and Sunil Kumar, "Fostering Li-ion Conduction in Zr-Sn-Al-based Mid-Entropy NASICON Electrolyte", Ceramics International, 50: 47612 (2024)


8. Asish Kumar Das, Pratiksha Gami, Hari Narayanan Vasavan, Samriddhi Saxena, Neha Dagar, Sonia Deswal, Pradeep Kumar, and Sunil Kumar, "Advancing High-Energy Solid-State Batteries with High-Entropy NASICON Solid Electrolytes", ACS Applied Energy Materials, 7: 8301 (2024)


7. Neha Dagar, Samriddhi Saxena, Hari Narayanan Vasavan, Asish Kumar Das, Pratiksha Gami, Sonia Deswal, Pradeep Kuamr, and Sunil Kumar, "Distinct Electrochemical Behavior of P3 and P2 Polytypes of Mn/Ni-based Na-ion Battery Cathode", Materials Letters, 369: 136768 (2024)


6. Pratiksha Gami, Manish Badole, Hari Narayanan Vasavan, Asish Kumar Das, Samriddhi Saxena, Neha Dagar, Velaga Srihari, and Sunil Kumar, "NASICON-type Medium Entropy Li1.5Sn1.0Al0.5Zr0.5(PO4)3 Electrolyte for Solid State Li Metal Batteries", Journal of Power Sources, 618: 235214 (2024)


5. Asish Kumar Das, Manish Badole, Hari Narayanan Vasavan, Samriddhi Saxena, Pratiksha Gami, Neha Dagar, and Sunil Kumar, "LiTa2PO8-based Polymer-Ceramic Electrolyte Paved the way to High-Performance Solid-State Lithium Metal Batteries", Energy & Fuels, 38: 11253 (2024)


4. Samriddhi Saxena, Manish Badole, Hari Narayanan Vasavan, Velaga Srihari, Asish Kumar Das, Pratiksha Gami, Neha Dagar, Sonia Deswal, Pradeep Kumar, Himanshu Kumar Poswal, and Sunil Kumar, "Elucidating the Electrochemical Behaviour of a P3–type High Na Content Cathode", Energy & Fuels, 38: 12140 (2024)


3. Hari Narayanan Vasavan, Manish Badole, Samriddhi Saxena, Velaga Srihari, Asish Kumar Das, Pratiksha Gami, Neha Dagar, Sonia Deswal, Pradeep Kumar, Himanshu Kumar Poswal, and Sunil Kumar, "Rational design of an optimal Al-substituted layered oxide cathode for Na-ion batteries", Electrochimica Acta, 494: 144457 (2024)


2. Asish Kumar Das, Manish Badole, Hari Narayanan Vasavan, Samriddhi Saxena, Pratiksha Gami, Neha Dagar, and Sunil Kumar, "Integrated Cathode-Electrolyte (Li6.55La3Zr1.55Ta0.45O12/ PEO-LiTFSI) Architecture Driven Excellent Performance of Solid-State Lithium Metal Batteries", Journal of Energy Storage, 94: 112452 (2024)


1. Hari Narayanan Vasavan, Manish Badole, Samriddhi Saxena, Velaga Srihari, Asish Kumar Das, Pratiksha Gami, Neha Dagar, Sonia Deswal, Pradeep Kumar, Himanshu Kumar Poswal, and Sunil Kumar, "Identification of Optimal Composition with Superior Electrochemical Properties Along the Zero-Mn3+ Line in Na0.75(Mn-Al-Ni)O2 Pseudo Ternary System", Journal of Energy Chemistry, 96: 206 (2024)

CONFERENCE PRESENTATIONS

1. Neha Dagar, Samriddhi Saxena, Hari Narayanan Vasavan, Asish Kumar Das, Pratiksha Gami, and Sunil Kumar, Ti-doped Na2/3Mn2/3Ni1/3O2 Na-ion Battery Cathode with Reversible Anionic Redox., International Conference in Asia – 2024 (IUMRS-ICA 2024), held at UGC-DAE Consortium for Scientific Research, Indore, Madhya Pradesh, India (December 2024).


2. Neha Dagar, Hari Narayanan Vasavan, Samriddhi Saxena, Asish Kumar Das Pratiksha Gami, Sonia Deswal, Pradeep Kumar, and Sunil Kumar, Synthesis and Characterization of P3 and P2 Phases of Mn/Ni-based Na-ion Battery Cathodes. International Conference on Energy and Environmental Materials (E2M 2024), held at Indian Institute of Technology Indore, Madhya Pradesh, India (July 2024).