1. Institute of Polymer Science and Engineering Department of Chemical Engineering Tsinghua University Beijing 100084 China
2. Department of Materials and Environmental Chemistry Stockholm University 10691 Stockholm Sweden
3. Department of Electrochemical Energy Storage Helmholtz-Zentrum Berlin für Materialien und Energie 14109 Berlin Germany
4. Beijing National Laboratory for Molecular Sciences (BNLMS) Laboratory of Polymer Physics and Chemistry CAS Research/Education Center for Excellence in Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100180 China
5. Spallation Neutron Source Science Center Dongguan 523803 China
6. School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai 200240 China