We report for the first time a hybrid of soil and commercial Vulcan XC-72 carbon (labeled as soil/C) as a high-performance cathode catalyst for rechargeable lithium–oxygen batteries. It was found that soil as a low cost and metal-free void volume expander in the hybrid catalyst is promising in the application of rechargeable Li–O 2 batteries.
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Hu et al. (2015) studied this question.
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