VOLUME IIntroduction, Haijiang Wang, Hui Li, and Xiao-Zi Yuan Catalyst Degradation, Shengsheng Zhang, Xiao-Zi Yuan, and Haijiang Wang Catalyst Support Degradation, Zhongwei Chen and Ryan Hsu Membrane Degradation, Yinghao Luan and Yongming Zhang Porous Transport Layer Degradation, Walter Mérida Degradation of Bipolar Plates and Its Effect on PEM Fuel Cells, Lars Kühnemann, Thorsten Derieth, Peter Beckhaus, and Angelika Heinzel Degradation of Other Components, Daijun Yang, Junsheng Zheng, Bing Li, and Jianxin Ma Contaminant-Induced Degradation, Olga A. Baturina, Yannick Garsany, Benjamin D. Gould, and Karen E. Swider-Lyons Environment-Induced Degradation, Eric Pinton, Sébastien Rosini, and Laurent Antoni Operation-Induced Degradation, Pucheng Pei Design-Related Durability Issues, Kui Jiao and Xianguo Li Index VOLUME IIIntroduction, Xiao-Zi Yuan, Haijiang Wang, and Hui Li In Situ Diagnostic ToolsPEM Fuel Cell Testing, Jonathan J. Martin Polarization Curve, Dong-Yun Zhang, Xianxia Yuan, and Zi-Feng Ma Electrochemical Impedance Spectroscopy, Norbert Wagner Cyclic Voltammetry, Jinfeng Wu, Xiao-Zi Yuan, and Haijiang Wang Linear Sweep Voltammetry, Shengsheng Zhang, Xiao-Zi Yuan, and Haijiang Wang Current Interruption, Miguel A. Rubio, Alfonso Urquia, and Sebastian Dormido Cathode Discharge, Herwig Robert Haas Water Transfer Factor Measurement, Tak Cheung Yau, Pierre Sauriol, Xiaotao Bi, and Jürgen Stumper Current Mapping, Dilip Natarajan and Trung Van Nguyen Transparent Cell, Chun-Ying Hsu and Fang-Bor Weng Magnetic Resonance Imaging, Ziheng Zhang and Bruce J. Balcom Neutron Imaging, Pierre Boillat and Günther G. Scherer Ex Situ Diagnostic ToolsX-Ray Diffraction, Justin Roller Scanning Electron Microscopy, Robert Alink and Dietmar Gerteisen Transmission Electron Microscopy, Rui Lin, Junsheng Zheng, and Jian-Xin Ma Infrared Imaging, Xiao-Zi Yuan, Shengsheng Zhang, Jinfeng Wu, and Haijiang Wang Fourier Transform Infrared Spectroscopy, Andrea Haug, Renate Hiesgen, Mathias Schulze, and Günter Schiller X-Ray Photoelectron Spectroscopy, Mathias Schulze and Andrea Haug Atomic Force Microscopy, Renate Hiesgen and K. Andreas Friedrich Binary Gas Diffusion, Jun Shen Gas Permeability of PEMs, Dmitri Bessarabov Species Detection, Khalid Fatih Rotating Disk Electrode/Rotating Ring-Disk Electrode, Xuan Cheng, Hengyi Li, and Qiaoming Zheng Porosimetry and Characterization of the Capillary Properties of Gas Diffusion Media, Jeff T. Gostick, Michael W. Fowler, Mark D. Pritzker, and Marios A. Ioannidis Index