Solid State Ionics Lab | Dr. Sunil Kumar
PUBLICATIONS
118. Samriddhi Saxena et al., under review (2026)
117. Neha Dagar et al., under review, xx: xxxx (2026)
116. Pratiksha Gami and Sunil Kumar, under re-preparation, xx: xxxx (2026)
115. Asish Kumar Das and Sunil Kumar, under review, xx: xxxx (2026)
114. Pratiksha Gami and Sunil Kumar, "High-performance composite electrolytes for solid-state lithium metal batteries: Enhancing ionic conductivity and interfacial compatibility through polyvinylpyrrolidone blending and inorganic filler incorporation", Journal of Power Sources, 668: 239382 (2026) [Preprint]
113. Asish Kumar Das and Sunil Kumar, "In-Situ Polymerization-Enabled Facile Electrode Interface in Solid-State Lithium-Metal Battery", ACS Applied Electronic Materials, 7: 9994 (2025)
112. Neha Dagar et al., "Synthesis, Structure, and Electrochemical Behaviour of O3-type NaNi1/3Mn1/3Al1/3O2", Electrochimica Acta, 541: 147374 (2025) [Preprint]
111. Samriddhi Saxena et al., "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) (Click here to download the preprint copy)
110. Neha Dagar et al., "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) (Click here to download the preprint copy)
109. Asish Kumar Das and Sunil Kumar, "Compositionally Tuned High-Entropy Li-Garnet Electrolyte for Advanced Solid-State Batteries", Batteries & Supercaps, 9: e202500358 (2025) (Click here to download the preprint copy)
108. Pratiksha Gami and Sunil Kumar, "Tuning Ionic Conductivity and Structural Stability of LiHf2(PO4)3 Solid Electrolytes through Al Substitution", The Journal of Physical Chemistry C, 129: 15970 (2025) (Click here to download the preprint copy)
107. Pratiksha Gami et al., "PVDF-HFP/PVP-based Miscible Blend Electrolyte for Fast-Charging Lithium Metal Batteries", Electrochimica Acta, 536: 146840 (2025) (Click here to download the preprint copy)
106. Samriddhi Saxena et al., "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) (Click here to download the preprint copy)
105. Hari Vasavan et al., "Elevating the Concentration of Na ions to 1 in P2 Type Layered Oxide Cathodes" Advanced Functional Materials, 35: 2421733 (2025) (Click here to download the preprint copy)
104. Neha Dagar et al., "Ti-substitution Facilitating Anionic Redox and Cycle Stability in P2-type Na2/3Mn2/3Ni1/3O2 Na-ion Battery Cathode" Energy & Fuels, 39: 3348 (2025) (Click here to download the preprint copy)
103. Pratiksha Gami et al., "PVP Incorporation Effects on the Structural, Thermal, Electrical, and Mechanical Properties of PVDF-HFP/PVP Blend" Journal of Polymer Research, 32: 94 (2025) (Click here to download the preprint copy)
102. Samriddhi Saxena et al., "Probing the Compositional and Structural Effects on the Electrochemical Performance of Na(Mn-Fe-Ni)O2 Cathodes in Sodium-Ion Batteries" Battery Energy, 4: e70018 (2025) [Preprint]
101. Pratiksha Gami et al., "Fostering Li-ion Conduction in Zr-Sn-Al-based Mid-Entropy NASICON Electrolyte", Ceramics International, 50: 47612 (2024) (Click here to download the preprint copy)
100. Asish Kumar Das et al., "Advancing High-Energy Solid-State Batteries with High-Entropy NASICON Solid Electrolytes", ACS Applied Energy Materials, 7: 8301 (2024) (Click here to download the preprint copy)
99. Neha Dagar et al., "Distinct Electrochemical Behavior of P3 and P2 Polytypes of Mn/Ni-based Na-ion Battery Cathode", Materials Letters, 369: 136768 (2024) (Click here to download the preprint copy)
98. Pratiksha Gami et al., "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) (Click here to download the preprint copy)
97. Asish Kumar Das et al., "LiTa2PO8-based Polymer-Ceramic Electrolyte Paved the way to High-Performance Solid-State Lithium Metal Batteries", Energy & Fuels, 38: 11253 (2024) (Click here to download the preprint copy)
96. Samriddhi Saxena et al., "Elucidating the Electrochemical Behaviour of a P3–type High Na Content Cathode", Energy & Fuels, 38: 12140 (2024) (Click here to download the preprint copy)
95. Hari Narayanan Vasavan et al., "Rational design of an optimal Al-substituted layered oxide cathode for Na-ion batteries", Electrochimica Acta, 494: 144457 (2024) (Click here to download the preprint copy)
94. Asish Kumar Das et al., "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) (Click here to download the preprint copy)
93. Pratiksha Gami et al., "Y-doped LiZr2(PO4)3 in PVDF-HFP Composite Electrolyte for Solid State Li Metal Batteries", ACS Applied Engineering Materials, 2: 1278 (2024) (Click here to download the preprint copy)
92. Hari Narayanan Vasavan et al., "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) (Click here to download the preprint copy)
91. Manish Badole et al., "Remarkable Enhancement in Piezoelectric Performance of [001] Textured Na0.4K0.1Bi0.5TiO3 Ceramic", Materials Research Bulletin, 176: 112841 (2024)
90. Asish Das et al., "Enhancing room temperature performance of solid-state lithium cell via a facile solid electrolyte-cathode interface design", Materials Today Sustainability, 26: 100758 (2024) (Click here to download the preprint copy)

89. Samriddhi Saxena et al., "Deciphering the role of optimal P2/O3 phase fraction in enhanced cyclability and specific capacity of layered oxide cathodes", Chemical Engineering Journal, 485: 149921 (2024) [Preprint]

88. Manish Badole et al., "Grain morphology-dependent dielectric and piezoelectric properties of lead-free KBT ceramics", Journal of the American Ceramic Society, 107: 2304 (2024)
87. Hari Narayanan Vasavan et al., "Impact of P3/P2 mixed phase on the structural and electrochemical performance of Na0.75Mn0.75Al0.25O2 cathode", Journal of Energy Storage, 74: 109428 (2023) (Click here to download the preprint copy)
86. Hari Narayanan Vasavan et al., "Unveiling the potential of P3 phase in enhancing the electrochemical performance of a layered oxide cathode", Materials Today: Energy, 37: 101380 (2023) (Click here to download the preprint copy)
85. Manish Badole et al., "High-Performance [00l]-Textured BiAlO3-Doped K0.5Bi0.5TiO3 Ceramics", ACS Applied Electronic Materials, 5: 3436 (2023)
84. Asish Das et al., "Highly conductive ceramic-in-polymer composite electrolyte enabling superior electrochemical performance for all-solid-state lithium batteries", Ceramics International, 49: 29719 (2023) (Click here to download the preprint copy)
83. Samriddhi Saxena et al., "Tailored P2/O3 phase-dependent electrochemical behavior of Mn-based cathode for sodium-ion batteries", Journal of Energy Storage, 64: 107242 (2023) (Click here to download the preprint copy)
82. Manish Badole et al., "Piezoelectric properties and structural evolution in La- and Al-modified K0.5Bi0.5TiO3 ceramics", Journal of Alloys and Compounds, 944: 169204 (2023)
81. Hari Narayanan Vasavan et al., "Excellent Structural Stability-Driven Cyclability in P2-Type Ti-Based Cathode for Na-Ion Batteries", ACS Applied Energy Materials, 6: 2440 (2023) (Click here to download the preprint copy)
80. Anjali Mehta et al., "Phonon dynamics in lead free perovskite (1-x)KNN-xBAN (x = 0.0–0.1): a temperature dependent raman study", Physica Scripta, 98: 035711 (2023)
1. Sunil Kumar & Varma, Solid State Communications, 146: 137 (2008)
CONFERENCES & INVITED TALKS
🏆 BEST THESIS PRESENTATION
76. Asish Kumar Das, "Development of Ceramic-Polymer Electrolytes...", RIC 2026, IIT Indore.
80. Pratiksha Gami et al., ACEPS13, IISc Bengaluru (Jan 2026).
⭐ BEST ORAL PRESENTATION
73. Asish Kumar Das, IMBRS 2025, Bangalore.