1. State Key Laboratory of TribologyTsinghua University Beijing 100084 China
2. Center for NanochemistryBeijing Science and Engineering Center for NanocarbonsBeijing National Laboratory for Molecular SciencesCollege of Chemistry and Molecular EngineeringPeking University Beijing 100871 China
3. Academy for Advanced Interdisciplinary StudiesPeking University Beijing 100871 China
4. Beijing Advanced Innovation Center for Materials Genome EngineeringInstitute for Advanced Materials and TechnologyUniversity of Science and Technology Beijing Beijing 100083 China
5. Beijing Graphene Institute Beijing 100094 China