Photo of Yongjun Leng

Yongjun Leng

Assistant Research Professor


  • Mechanical Engineering

338 Reber Building


Personal or Departmental Website

Research Areas:

Interest Areas:

Electrochemistry, electrocatalysis, fuel cells, Li-ion batteries





Journal Articles

  • Shanhai Ge, Yongjun Leng, Teng Liu, Ryan S. Longchamps, Xiao-Guang Yang, Yue Gao, Daiwei Wang, Donghai Wang and Chao-Yang Wang, 2020, "A new approach to both high safety and high performance of lithium-ion batteries", SCIENCE ADVANCES, 6, (9)
  • Xiao-Guang Yang, Teng Liu, Yue Gao, Shanhai Ge, Yongjun Leng, Donghai Wang and Chao-Yang Wang, 2019, "Asymmetric Temperature Modulation for Extreme Fast Charging of Lithium-Ion Batteries", JOULE, 3, (12), pp. 3002-3019
  • Wonho Lee, Christopher K. Lyon, Joo-Hwan Seo, Raymond Lopez-Hallman, Yongjun Leng, Chao-Yong Wang, Michael A Hickner, Clive A Randall and Enrique Daniel Gomez, 2019, "Ceramic-Salt Composite Electrolytes from Cold Sintering", ADVANCED FUNCTIONAL MATERIALS, 29, (20)
  • Xiao-Guang Yang, Shanhai Ge, Teng Liu, Yongjun Leng and Chao-Yang Wang, 2018, "A look into the voltage plateau signal for detection and quantification of lithium plating in lithium-ion cells", JOURNAL OF POWER SOURCES, 395, pp. 251-261
  • Yongjun Leng, Shanhai Ge, Dan Marple, Xiao-Guang Yang, Christoph Bauer, Peter Lamp and Chao-Yang Wang, 2017, "Electrochemical Cycle-Life Characterization of High Energy Lithium-Ion Cells with Thick Li(Ni0.6Mn0.2Co0.2)O-2 and Graphite Electrodes", JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 164, (6), pp. A1037-A1049
  • Xiao-Guang Yang, Yongjun Leng, Guangsheng Zhang, Shanhai Ge and Chao-Yang Wang, 2017, "Modeling of lithium plating induced aging of lithium-ion batteries: Transition from linear to nonlinear aging", JOURNAL OF POWER SOURCES, 360, pp. 28-40
  • Guangsheng Zhang, Shanhai Ge, Xiao-Guang Yang, Yongjun Leng, Dan Marple and Chao-Yang Wang, 2017, "Rapid restoration of electric vehicle battery performance while driving at cold temperatures", JOURNAL OF POWER SOURCES, 371, pp. 35-40
  • Chao-Yang Wang, Guangsheng Zhang, Shanhai Ge, Terrence Xu, Yan Ji, Xiao-Guang Yang and Yongjun Leng, 2016, "Lithium-ion battery structure that self-heats at low temperatures", NATURE, 529, (7587), pp. 515-+
  • Yongjun Leng, Lizhu Wang, Michael A Hickner and Chao-Yang Wang, 2015, "Alkaline membrane fuel cells with in-situ cross-linked ionomers", ELECTROCHIMICA ACTA, 152, pp. 93-100
  • Seunghun Jung, Yongjun Leng and Chao-Yang Wang, 2014, "Role of CO2 in Methanol and Water Transport in Direct Methanol Fuel Cells", ELECTROCHIMICA ACTA, 134, pp. 35-48
  • Nanwen Li, Yongjun Leng, Michael A Hickner and Chao-Yang Wang, 2013, "Highly Stable, Anion Conductive, Comb-Shaped Copolymers for Alkaline Fuel Cells", JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 135, (27), pp. 10124-10133
  • Yongjun Leng, Guang Chen, Alfonso J. Mendoza, Timothy B. Tighe, Michael A Hickner and Chao-Yang Wang, 2012, "Solid-State Water Electrolysis with an Alkaline Membrane", JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 134, (22), pp. 9054-9057

Research Projects

Honors and Awards


Service to Penn State:

Service to External Organizations:




With more than 60 faculty members, 330 graduate students, and 800 undergraduate students, the Penn State Department of Mechanical Engineering embraces a culture that welcomes individuals with a diversity of backgrounds and expertise. Our faculty and students are innovating today what will impact tomorrow’s solutions to meeting our energy needs, homeland security, biomedical devices, and transportation systems. We offer B.S. degrees in mechanical engineering as well as resident (M.S., Ph.D.) and online (M.S.) graduate degrees in mechanical engineering. See how we’re inspiring change and impacting tomorrow at

Department of Mechanical Engineering

137 Reber Building

The Pennsylvania State University

University Park, PA 16802-4400

Phone: 814-865-2519