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Dr. Aman Bhardwaj

  • Dr. Aman Bhardwaj Postdoctoral Researcher Institute of Inorganic Chemistry

    +49 221 470 3070
    Greinstr. 6

    50939 Cologne Germany
    • Synthesis of transition metal oxide and chalcogenide materials
    • Structural, chemical and operando electrochemical characterizations
    • Device fabrication and performance evaluation for energy and environmental applications
    • Study of solid-fluid interfaces and identification of structure-property relationships
    Contact via E-Mail



  1. Ammonia sensing electrode, mixed potential type ammonia sensor including the sensing electrode material and method for manufacturing the same, KR 10-2020-0082388
  2. Solid electrolyte-based mixed potential type ammonia sensor and method of manufacturing it, KR 10-2020-0005398.
  3. A biomass composition for thermal insulation and method of manufacturing the same, IN 201611024361.


  1. A. Bhardwaj, H. Bae, I.H. Kim, L. Mathur, J.Y. Park, S.J. Song, High capacity, rate-capability and power delivery at high temperature by an oxygen-deficient perovskite oxide as proton insertion anode for energy storage devices, J. Electrochem. Soc. 168 (2021) 070540
  2. A. Bhardwaj, I.H. Kim, L. Mathur, J.Y. Park, S.-J. Song, Ultrahigh-sensitive mixed-potential ammonia sensor using dual-functional NiWO4 electrocatalyst for exhaust environment monitoring, J Hazard. Mater.403 (2021) 123797
  3. A. Bhardwaj, A. Kumar, H. Bae, C.J. Park, S.J. Song, Surface decorated spinel-oxide electrodes for mixed-potential ammonia sensor: Performance and DRT analysis, J Hazard. Mater. 396 (2020) 122601
  4. A. Bhardwaj, A. Kumar, U. Sim, H.N. Im, S.J. Song, Synergistic enhancement in the sensing performance of a mixed-potential NH3 sensor using SnO2@CuFe2O4 sensing electrode, Sens. Actuators B Chem. 308(2020) 127748
  5. A. Bhardwaj, I.H. Kim, J. Hong, A. Kumar, S.J. Song, Transition metal oxide (Ni, Co, Fe)-tin oxide nanocomposite sensing electrodes for a mixed-potential based NO2 sensor, Sens. Actuators B Chem. 284(2019) 534-544
  6. A. Bhardwaj, H. Bae, Y. Namgung, J. Lim, S.J. Song, Influence of sintering temperature on the physical, electrochemical and sensing properties of α-Fe2O3-SnO2 nanocomposite sensing electrode for a mixed-potential type NOX sensor, Ceramics International 45 (2019) 2309-2318
  7. A. Bhardwaj, J. Hong, I.H. Kim, Y. Namgung, S.J. Song, Effects of electronic probe’s architecture on the sensing performance of mixed-potential based NOX sensor, Sens. Actuators B Chem. 282 (2019) 426-436
  8. A. Bhardwaj, SK S. Hossain, M.R. Majhi, Preparation and characterization of clay bonded high strength silica refractory by utilizing agriculture waste, Journal of the Spanish Ceramic and Glass Society 56 (2017) 256-262
  9. A. Kumar, Y. Yun, J. Hong, I.H. Kim, A. Bhardwaj, S.J. Song, Influence of different parameters on total fluoride concentration evaluation in ex-situ chemical degradation of nafion based membrane, Korean J. Chem. Eng. 38 (2021) 2057
  10. S.B. Kale, A. Bhardwaj, V.C. Lokhande, D.M. Lee, S.H. Kang, J.H. Kim, C.D. Lokhande, Amorphous cobalt-manganese sulfide electrode for efficient water oxidation: Meeting the fundamental requirements of an electrocatalyst, Chem. Eng. J. 405 (2021) 126993
  11. J. Hong, A. Bhardwaj, Y. Namgung, H. Bae, S.J. Song, Evaluation of the effects of nanocatalyst infiltration on the SOFC performance and electrode reaction kinetics using the transmission line model, J. Mater. Chem. A 8 (2020) 23473-23487
  12. A. Kumar, J. Hong, Y. Yun, A. Bhardwaj, S.J. Song, The role of surface lattice defects of CeO2−δnanoparticles as a scavenging redox catalyst in polymer electrolyte membrane fuel cells, J. Mater. Chem. A 8 (2020) 26023-26034
  13. J. Hong, A. Bhardwaj, H. Bae, I.H. Kim, S.J. Song, Electrochemical Impedance Analysis of SOFC with Transmission Line Model Using Distribution of Relaxation Times (DRT), J. Electrochem. Soc. 167 (2020) 114504
  14. L. Mathur, I.H. Kim, A. Bhardwaj, B. Singh, J.Y. Park, S.J. Song, Structural and electrical properties of novel phosphate based composite electrolyte for low-temperature fuel cells, Comp. Part B: Eng. 202 (2020) 108405
  15. Y.S. Yoo, A. Bhardwaj, J. Hong, H.N. Im, S.J. Song, Sensing Performance of a YSZ-Based Electrochemical NO2 Sensor Using Nanocomposite Electrodes, J. Electrochem. Soc. 166 (2019) B799
  16. I.H. Kim, D.K. Lim, H. Bae, A. Bhardwaj, J.Y. Park, S.J. Song, Determination of partial conductivities and computational analysis of the theoretical power density of BaZr0.1Ce0.7Y0.1Yb0.1O3−δ (BZCYYb1711) electrolyte under various PCFC conditions, J. Mater. Chem. A 7 (2019) 21321-21328
  17. B. Singh, A. Bhardwaj, S.K. Gautam, D. Kumar, O. Parkash, I.H. Kim, S.J. Song, Fast-ionic conduction in tetravalent metal pyrophosphate-alkali carbonate composites: New potential electrolytes for intermediate-temperature fuel cells, J. Power Sources 345 (2017) 176-181
  18. H. Bae, I.H. Kim, B. Singh, A. Bhardwaj, S.J. Song, Defect chemistry of highly defective La0.1Sr0.9Co0.8Fe0.2O3−δ by considering oxygen interstitials: Effect of hole degeneracy, Solid State Ionics 347 (2020) 115251
  19. B. Singh, A. Bhardwaj, S.K. Gautam, O. Parkash, D. Kumar, H.S. Jadhav, S.J. Song, Synthesis and characterization of MnO-doped titanium pyrophosphates (Ti1-xMnxP2O7; x= 0–0.2) for intermediate-temperature proton-conducting ceramic-electrolyte fuel cells, Ionics 23 (2017) 1675-1684
  20. C. Son, A. Bhardwaj, J. Hong, J.W. Kim, H.S. Moon, H.S. Noh, S.J. Song, Preparation and characterization of plasma-sprayed yttria stabilized zirconia as a potential substrate for NOX sensor, Ceramics International 43 (2017) 4083-4089
  21. C. Son, A. Bhardwaj, J. Hong, J.W. Kim, H.S. Moon, H.S. Noh, S.J. Song, Plasma-sprayed gadolinium-doped ceria (GDC) for intermediate temperature solid electrolyte, J. Ceramic Process. Research 18 (2018) 858-864
  22. Y.S. Yoo, Y. Namgung, A. Bhardwaj, S.J. Song, A Facile Combustion Synthesis Route for Performance Enhancement of La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF6428) as a Robust Cathode Material for IT-SOFC, J. Korean Ceram. Soc. 56 (2019) 497-505
  23. SK S. Hossain, L. Mathur, A. Bhardwaj, P.K. Roy, A facile route for the preparation of silica foams using rice husk ash, Int. J. App. Ceramic Tech. 16 (2019) 1069-1077
  24. B. Singh, N. Devi, L. Mathur, R.K. Singh, A. Bhardwaj, S.J. Song, D. Henkensmeier, Fabrication of dense Ce0.9Mg0.1P2O7-PmOn composites by microwave heating for application as electrolyte in intermediate-temperature fuel cells, Ceramic International 44 (2018) 6170-6175