1. State Key Laboratory of Solidification Processing Center for Nano Energy Materials School of Materials Science and Engineering Northwestern Polytechnical University and Shaanxi Joint Lab of Graphene (NPU) Xi'an 710072 China
2. Engineering Laboratory for Functionalized Carbon Materials Shenzhen Key Laboratory for Graphene‐based Materials Graduate School at Shenzhen Tsinghua University Shenzhen 518055 China
3. Department of Mechanical Engineering University of Delaware Newark DE 19716 USA