1. International Research Center for EM Metamaterials & Institute of Advanced Magnetic Materials College of Materials and Environmental Engineering Hangzhou Dianzi University Hangzhou 310012 China
2. College of Chemistry and Chemical Engineering Hubei University Wuhan 430062 P.R. China
3. Jiangsu Pylon Battery Co Ltd. Yangzhou 211400 China
4. School of Physics The University of Sydney Camperdown New South Wales 2006 Australia
5. School of Chemical Engineering & Advanced Materials The University of Adelaide Adelaide South Australia 5005 Australia