Zhao, Hongxiao, Zhi Zheng, Jing Li, Huimin Jia, Ka-wai Wong, Yidong Zhang, and WoonMing Lau. 2013. “Substitute of Expensive Pt With Improved Electrocatalytic Performance and Higher Resistance to CO Poisoning for Methanol Oxidation: The Case of Synergistic Pt-Co3O4 Nanocomposite”. Nano-Micro Letters 5 (4):296-302. https://doi.org/10.1007/BF03353761.