Publications

Google Scholar Profile

Peer-Reviewed Publications

(* Corresponding author, # Equally contributed author)

  1. M. Chen, D. Cullen, S. Karakalos, X. Lu, J. Cui, K. Jeremy, H. Mistry, K. He*, D. J. Myers*, G. Wu*, “Single Atomic Iron Site Catalysts via Benign Aqueous Synthesis for Durability Improvement in Proton Exchange Membrane Fuels Cells”, Journal of The Electrochemical Society, (2021). DOI: 10.1149/1945-7111/abf014
  2. J. Cui, H. Zheng, Z. Zhang, S. Hwang, X. Q. Yang, K. He*, “Origin of anomalous high-rate Na-ion electrochemistry in layered bismuth telluride anodes”, Matter, 4, 1335 (2021).
  3. A. Rashti, X. Lu, A. Dobson, E. Hassani, F. Feyzbar-Khalkhali-Nejad, K. He, T.-S. Oh*, “Tuning MOF-Derived Co3O4/NiCo2O4 Nanostructures for High-Performance Energy Storage”, ACS Applied Energy Materials, 4, 1537 (2021).
  4. J. M. Lim, N. S. Luu, K. Y. Park, M. T. Z. Tan, S. Kim, J. R. Downing, K. He, V. P. Dravid, M. C. Hersam*, “Enhancing nanostructured nickel-rich lithium-ion battery cathodes via surface stabilization”, Journal of Vacuum Science & Technology A, 38, 063210 (2020).
  5. H. Zheng, J. Cui, K. He*, “A New Cryo-FIB-TEM Approach for Damage-Free Characterization of Garnet Electrolytes in Solid-State Batteries”, Microscopy and Microanalysis, 26, 2784 (2020).
  6. J. Cui, H. Zheng, K. He*, “Air-Protective Cryo-FIB Tomography of Sensitive Materials for Energy Applications”, Microscopy and Microanalysis, 26, 1828 (2020).
  7. J. M. Lim, S. Kim, N. S. Luu, J. R. Downing, M. T. Z. Tan, K. Y. Park, J. C. Hechter, V. P. Dravid, K. He, M. C. Hersam*, “High Volumetric Energy and Power Density Li2TiSiO5 Battery Anodes via Graphene Functionalization”, Matter, 3, 522 (2020).
  8. J. Cui, H. Zheng, K. He*, “In situ transmission electron microscopy of conversion-type electrodes for rechargeable ion batteries (Invited Review)”, Advanced Materials, 33, 2000699 (2020).
  9. Y. Liu*, Q. Liu, C. Jian, Z. Li, T. Li, T. Nilges, K. He*, Z. Jia*, C. Zhou*, “Red-phosphorus-impregnated carbon nanofibers for sodium-ion batteries and liquefaction of red phosphorus”, Nature Communications, 11, 2520 (2020).
  10. J. Lee*, Z. Mao, K. He, Z. H. Sung, T. Spina, S.-I. Baik, D. L. Hall, M. Liepe, D. N Seidman*, S. Posen*, “Grain-boundary structure and segregation in Nb3Sn coatings on Nb for high-performance superconducting radiofrequency cavity applications”, Acta Materialia, 18, 155 (2020).
  11. Z. Zhao, J. Cui, M. Zou, K. He, K. Brinkman, J. Tong*, “Novel Twin-Perovskite Nanocomposite of Ba-Ce-Fe-Co-O as a Promising Triple Conducting Cathode Material for Protonic Ceramic Fuel Cells”, Journal of Power Sources, 450, 227609 (2020).
  12. S. Kim, J. Cui, V. P. Dravid, K. He*, “Orientation-Dependent Intercalation Channels for Lithium and Sodium in Black Phosphorus”, Advanced Materials, 31, 1904623 (2019).
  13. K. He*, “In Situ Electron Microscopy for Electrically Induced Charge Transport and Phase Transformation”, Microscopy and Microanalysis, 25, 1862 (2019).
  14. C. Liu, S. L. Nauert, M. A. Alsina, D. Wang, A. Grant, K. He, E. Weitz*, M. Nolan, K. A. Gray*, J. M. Notestein*, “Role of surface reconstruction on Cu/TiO2 nanotubes for CO2 conversion”, Applied Catalysis B: Environmental, 255, 117754 (2019).
  15. J. Gao, Y. Meng, T. Hong, S. Kim, S. Lee, K. He, K. S. Brinkman*, “Rational anode design for protonic ceramic fuel cells by a one-step phase inversion method”, Journal of Power Sources, 418, 162 (2019).
  16. L. Zhao, H. H. Wu, C. Yang, Q. Zhang*, G. Zhong, Z. Zheng, H. Chen, J. Wang, K. He, B. Wang, T. Zhu, X. C. Zeng*, M. Liu, M.-S. Wang*, “Mechanistic Origin of the High Performance of Yolk@ Shell Bi2S3@ N-Doped Carbon Nanowire Electrodes”, ACS Nano, 12, 12597 (2018).
  17. S. Kim, G. Evmenenko, Y. Xu, D. B. Buchholz, M. Bedzyk, K. He, J. Wu*, V. P. Dravid*, “Thin Film RuO2 Lithiation: Fast Lithium‐Ion Diffusion along the Interface”, Advanced Functional Materials, 28, 1805723 (2018).
  18. S. Kim, Z. Yao, J. M. Lim, M. C. Hersam, C. Wolverton, V. P. Dravid*, K. He*, “Atomic-Scale Observation of Electrochemically Reversible Phase Transformations in SnSe2 Single Crystals”, Advanced Materials, 30, 1804925 (2018).
  19. S. Kim, V. P. Dravid, K. He*, “In Situ Atomic-Scale TEM Observation of Phase Transformation in Two-Dimensional SnSe2 Single Crystals”, Microscopy and Microanalysis, 24, 1862 (2018).
  20. K. He*, S. Kim, S. Hwang, D. Su, “Panoramic Visualization of Lithiation of Copper Sulfide by In Situ STEM”, Microscopy and Microanalysis, 24, 1498 (2018).
  21. S. Kim, H. J. Jung, J. C. Kim, K.-S. Lee, S. S. Park, V. P. Dravid*, Kai He*, H. Y. Jeong*, “In Situ Observation of Resistive Switching in an Asymmetric Graphene Oxide Bilayer Structure”, ACS Nano, 12, 7335 (2018).

    Prior to Clemson

  22. A. Bahramian*, M. Rezaeivala, K. He, D. D. Dionysiou, “Enhanced visible-light photoelectrochemical hydrogen evolution through degradation of methyl orange in a cell based on coral-like Pt-deposited TiO2 thin film with sub-2 nm pores”, Catalysis Today, 335, 333 (2018).
  23. J. Lee*, S. Posen*, Z. Mao, Y. Trenikhina, K. He, D. L. Hall, M. Liepe, D. N. Seidman*, “Atomic-scale analyses of Nb3Sn on Nb prepared by vapor-diffusion for superconducting radiofrequency cavity applications: A correlative study”, Superconductor Science and Technology, 32, 024001 (2019).
  24. Y. Liu, K. He, W. Yuan, X. Jin, T. L., Y. Wang, H. L. Xin, H. Chen, C. Gao, H. Li*, “Visualizing the toughening origins of gel-grown calcite single-crystal composites”, Chinese Chemical Letters, 29, 1666 (2018).
  25. S. Hwang, Z. Yao, L. Zhang, M. Fu, K. He, L. Mai, C. Wolverton, D. Su*, “Multi-Step Lithiation of Tin Sulfide: An Investigation Using In Situ Electron Microscopy”, ACS Nano, 12, 3638 (2018).
  26. K. He*, Z. Yao, S. Hwang, N. Li, K. Sun, Y. Du, H. Zhang, C. Wolverton, D. Su*, “Kinetically-Driven Phase Transformation during Lithium in Copper Sulfide Nanoflakes”, Nano Letters, 17, 5726 (2017).
  27. D. Gürsoy*, Y. P. Hong, K. He, K. Hujsak, S. Yoo, S. Chen, Y. Li, M. Ge, L. M. Miller, Y. S. Chu, V. Andrade, K. He, O. Cossairt, A. K. Katsaggelos, C. Jacobsen, “Rapid alignment of nanotomography data using joint iterative reconstruction and reprojection”, Scientific Reports, 7, 11818 (2017).
  28. J. Liu, K. He, W. Wu, T. B. Song, M. Kanatzidis*, “Chalcogel-derived supported ultrafine Pt nanoparticles on chalcogenide for 4-nitrophenol reduction”, Journal of American Chemical Society, 139, 2900 (2017).
  29. W. Luc, C. Collins, S. Wang, H. Xin, K. He, Y. Kang, F. Jiao*, “Ultra-thin Electrocatalysts for Carbon Dioxide Reduction”, Journal of American Chemical Society, 139, 1885 (2017).
  30. Y. H. Kuo, S. Nah, K. He, T. Hu, A. M. Lindenberg*, “Ultrafast light-induced symmetry changes in single BaTiO3 nanowires”, Journal of Materials Chemistry C, 5, 1522 (2017).
  31. K. He*, “Towards Understanding Ionic Transport Mechanisms of Sodium in Graphitic Materials by In Situ TEM”, Microscopy and Microanalysis, 23, 1974 (2017).
  32. S. Kim, V. P. Dravid, K. He*, “In Situ Observation of Structural Change in Single-Crystalline LiFePO4 Nanoflakes during Electrochemical Cycling”, Microscopy and Microanalysis, 23, 1988 (2017).
  33. K. He#, S. Zhang#, J. Li, X. Yu, Q. Meng, Y. Zhu, E. Hu, K. Sun, H. Yun, X.-Q. Yang, Y. Zhu, H. Gan, Y. Mo, E. A. Stach, C. B. Murray*, D. Su*, “Visualizing Non-Equilibrium Lithiation of Spinel Oxide via In Situ Transmission Electron Microscopy”, Nature Communications, 7, 11441 (2016).
  34. J. Li, K. He, Q. Meng, X. Li, Y. Zhu, S. Hwang, K. Sun, H. Gan, Y. Zhu, Y. Mo, E. A. Stach, D. Su, “Kinetic Phase Evolution of Spinel Cobalt Oxide During Lithiation”, ACS Nano, 10, 9577 (2016).
  35. Y. Huang, J. Qiao, K. He, S. Bliznakov, E. Sutter, X. Chen, D. Luo, F. Meng, D. Su, J. Decker, W. Ji*, R. S. Ruoff*, P. Sutter*, “Interaction of Black Phosphorus with Oxygen and Water”, Chemistry of Materials, 28, 8330 (2016).
  36. K. He, J. Li, Q. Meng, E. A. Stach, Y. Zhu, D. Su, “Direct Visualization of Lithium Intercalation in Spinel Iron Oxide by In-Situ Bright-Field Scanning Transmission Electron Microscopy”, Microscopy and Microanalysis, 22, 760 (2016).
  37. Z. Wang, D. Santhanagopalan, W. Zhang, F. Wang, H. Xin, K. He, J. Li, N. Dudney, Y. S. Meng*, “In situ STEM/EELS Observation of Nanoscale Interfacial Phenomena in All-Solid-State Batteries”, Nano Letters, 16, 3760 (2016).
  38. K. J. Terhune*, L. B. King, K. He, J. Cumings, “Radiation-induced solidification of ionic liquid under extreme electric field”, Nanotechnology, 27, 375701 (2016).
  39. K. He#, F. Lin#, Y. Zhu, X. Yu, J. Li, R. Lin, D. Nordlund, T. C. Weng, R. M. Richards, X. Q. Yang, M. M. Doeff, E. A. Stach, Y. Mo*, H. L. Xin*, D. Su*, “Sodiation Kinetics of Metal Oxide Conversion Electrodes: A Comparative Study with Lithiation”, Nano Letters, 15, 5755 (2015).
  40. K. He#, H. L. Xin#, K. Zhao, X. Yu, D. Nordlund, T. C. Weng, J. Li, Y. Jiang, C. A. Cadigan, R. M. Richards, M. M. Doeff, X. Q. Yang, E. A. Stach, J. Li*, F. Lin*, D. Su*, “Transitions from near-surface to interior redox upon lithiation in conversion electrode materials”, Nano Letters, 15, 1437 (2015).
  41. K. He, F. Lin, E. A. Stach, Y. Mo, H. L. Xin, D. Su, “Contrasting Reaction Modality between Electrochemical Sodiation and Lithiation in NiO Conversion Electrode Materials”, Microscopy and Microanalysis, 21, 325 (2015).
  42. K. He, H. L. Xin, J. Li, E. A. Stach, D. Su, “Revealing Near-Surface to Interior Redox upon Lithiation in Conversion Electrode Materials Using Electron Microscopy”, Microscopy and Microanalysis, 21, 1369 (2015).
  43. J. Li, K. He, E. A. Stach, D. Su*, “Comparison of Co3O4 and CoO Nanoparticles as Anodes for Lithium-ion Batteries”, Microscopy and Microanalysis, 21, 477 (2015).
  44. S. Guo*, A. F. Fidler, K. He, D. Su, G. Chen, Q. Lin, J. M. Pietryga*, V. I. Klimov*, “Shape-Controlled Narrow-Gap SnTe Nanostructures: From Nanocubes to Nanorods and Nanowires”, Journal of American Chemical Society, 137, 15074 (2015).
  45. S. Guo, X. Zhang, W. Zhu, K. He, D. Su, A. Mendoza-Garcia , S. F. Ho , G. Lu , S. Sun*, “Nanocatalyst Superior to Pt for Oxygen Reduction Reaction: the Case of Core/Shell Ag(Au)/CuPd Nanoparticles”, Journal of American Chemical Society, 136, 15026 (2014).
  46. K. He, P. Gao, N. Pereira, G. G. Amatucci, Y. Zhu, F. Wang, D. Su*, “Discovering a Novel Sodiation in FeF2 Electrodes for Sodium-Ion Batteries”, Microscopy and Microanalysis, 20, 490 (2014).
  47. K. He, J. Cumings*, “A New Design for Measuring Potentials in Operando Nanoelectronic Devices by Electron Holography”, Microscopy and Microanalysis, 20, 266 (2014).
  48. D. Su, S. W. Kim, K. He, N. Pereira, G. G. Amatucci, J. Graetz, F. Wang, “Probing the Local Chemical and Structural Ordering of Iron Oxyfluoride”, Microscopy and Microanalysis, 20, 430 (2014).
  49. K. He, Y. Zhou, P. Gao, L. Wang, N. Pereira, G. G. Amatucci, K.-W. Nam, X.-Q. Yang, Y. Zhu, F. Wang*, D. Su*, “Sodiation via Heterogeneous Disproportionation in FeF2 Electrodes for Sodium-Ion Batteries”, ACS Nano, 8, 7251 (2014).
  50. Y. Wen#, K. He# (co-first), Y. Zhu#, F. Han, Y. Xu, I. Matsuda, Y. Ishii, J. Cumings*, C. Wang*, “Expanded Graphite as Superior Anode for Sodium-Ion Batteries”, Nature Communications, 5, 4033 (2014).
  51. X. Meng, K. He, D. Su, X. Zhang, C. Sun, Y. Ren, H. H. Wang, W. Weng, L. Trahey, C. P. Canlas, J. W. Elam*, “Gallium Sulfide-Single Walled Carbon Nanotube Composites: High-Performance Anodes for Lithium-Ion Batteries”, Advanced Functional Materials, 24, 5435 (2014).
  52. X. Wei, R. Zhou, W. Lefebvre, K. He, D. Le Roy, R. Skomski, X. Li, J. E. Shield, M. J. Kramer, S. Chen, X. C. Zeng, D. J. Sellmyer*, “Structural and Magnetic Evolution of Bimetallic MnAu Clusters Driven by Asymmetric Atomic Migration”, Nano Letters, 14, 1362 (2014).
  53. S. F. Ho, A. Mendoza-Garcia, S. Guo, K. He, D. Su, S. Liu, O. Metin, S. Sun*, “A Facile Route to Monodisperse MPd (M = Co or Cu) Alloy Nanoparticles and Their Catalysis for Electrooxidation of Formic Acid”, Nanoscale, 6, 6970 (2014).
  54. F. X. Ma, X. Y. Sun, K. He, J. T. Jiang, L. Zhen, C. Y. Xu*, “Hydrothermal synthesis, magnetic and electromagnetic properties of hexagonal Fe3O4 microplates”, Journal of Magnetism and Magnetic Materials, 361, 161 (2014).
  55. K. He, J. Cumings*, “Diagnosing nanoelectronic components using coherent electrons”, Nano Letters, 13, 4815 (2013).
  56. K. He, F. X. Ma, C. Y. Xu, J. Cumings*, “Mapping Magnetic Fields of Fe3O4 Nanosphere Assemblies by Electron Holography”, Journal of Applied Physics, 113, 17B528 (2013).
  57. K. He, J. H. Cho, Y. Jung, S. T. Picraux, J. Cumings*, “Silicon Nanowires: Electron holography studies of doped p-n junctions and biased Schottky barriers”, Nanotechnology, 24, 115703 (2013).
  58. K. He, J. H. Cho, Y. Jung, M. Reed, S. T. Picraux, J. Cumings, “Distinguishing P-N Junction and Schottky Barrier in a Working Silicon Nanowire Diode”, Microscopy and Microanalysis, 19, 1356 (2013).
  59. R. Zhou, X. Wei, K. He, J. E. Shield, D. J. Sellmyer, and X. C. Zeng*, “Theoretical and Experimental Characterization of Structures of MnAu Nanoclusters in the Size Range of 1–3 nm”, ACS Nano, 5, 9966 (2011).

    PhD and Before

  60. K. He*, D. J. Smith, M. R. McCartney, “Direct Observation of Magnetic Domain Wall Propagation in NiFe Nanowires”, Microscopy and Microanalysis, 16, 574 (2010).
  61. (Invited) K. He*, D. J. Smith, M. R. McCartney, “Effects of vortex chirality and shape anisotropy on magnetization reversal of Co nanorings”, Journal of Applied Physics, 107, 09D307 (2010).
  62. (Invited Review) M. R. McCartney*, N. Agarwal, S. Chung, D. A. Cullen, M. -G. Han, K. He, L. Li, H. Wang, L. Zhou, D. J. Smith*, “Quantitative phase imaging of nanoscale electrostatic and magnetic fields using off-axis electron holography”, Ultramicroscopy, 110, 375 (2010).
  63. H. Zhang, W. Ding*, K. He, M. Li, “Synthesis and Characterization of Crystalline Silicon Carbide Nanoribbons”, Nanoscale Research Letters, 5, 1264 (2010).
  64. K. He*, D. J. Smith, M. R. McCartney, “Observation of asymmetrical pinning of domain walls in notched Permalloy nanowires using electron holography”, Applied Physics Letters, 95, 182507 (2009).
  65. K. He*, D. J. Smith, M. R. McCartney*, “Direct visualization of three-step magnetization reversal of nanopatterned spin-valve elements using off-axis electron holography”, Applied Physics Letters, 94, 172503 (2009). [Featured as Front Cover paper, and selected for May 11, 2009 issue of Virtual Journal of Nanoscale Science & Technology.]
  66. K. He*, N. Agarwal, D. J. Smith, M. R. McCartney, “Vortex Formation during Magnetization Reversal of Co Slotted Nanorings”, IEEE Transactions on Magnetics, 45, 3885 (2009).
  67. K. He*, D. J. Smith, M. R. McCartney*, “Remanent States and Magnetization Reversal of Nanopatterned Spin Valve Elements using Off-Axis Electron Holography”, Journal of Applied Physics, 105, 07D517 (2009).
  68. J. T. Jiang, L. Zhen*, X. J. Wei, Y. X. Gong, W. Z. Zhao, C. Y. Xu, K. He, “Permeability calculation in composite media with low filler concentration: A new method of effective media theory application”, Journal of Applied Physics, 105, 07A526 (2009).
  69. C. Y. Xu, L. Zhen*, L. Yang, K. He, W. Z. Shao, L.-C. Qin, “A facile molten salt route to K2Nb8O21 nanoribbons”, Ceramics International, 34, 435 (2008).
  70. L. Zhen*, K. He, C. Y. Xu, W. Z. Shao, “Synthesis and Characterization of Single-Crystalline MnFe2O4 Nanowires via a Surfactant-Free Hydrothermal Route”, Journal of Magnetism and Magnetic Materials, 320, 2672 (2008).
  71. K. He, C. Y. Xu, L. Zhen*, W. Z. Shao, “Fractal growth of single-crystalline α-Fe2O3: From dendritic micro-pines to hexagonal micro-snowflakes”, Materials Letters, 62, 739 (2008).
  72. K. He, C. Y. Xu, L. Zhen*, W. Z. Shao, “Hydrothermal Synthesis and Characterization of Single-Crystalline Fe3O4 Nanowires with High Aspect Ratio and Uniformity”, Materials Letters, 61, 3159 (2007).