美國紐約州立大學賓漢姆分校Howard Wang教授到訪并介紹鋰電研究方面的進展
Rechargeable Li-containing batteries are a promising technology for efficient
energy storage. However, significant challenges need to be addressed before
they could be deployed to large-scale system applications in plug-in electric
vehicles, renewable energy management, and the power grid. We have carried out
critical in situ neutron measurements on Li distribution and transport during
the battery operation, and gain new insights in the function and failure of
battery systems. Four neutron measurement techniques, neutron depth profiling
(NDP), neutron reflectivity (NR), small angle neutron scattering (SANS), and
neutron imaging (NI) have been used to quantify real-time information of the Li
transport in electrode, sub-nanometer interfacial structures, and fracturing of
electrode particles. Using examples, we demonstrate that in situ neutron
diagnoses offer new opportunities in better understanding the performance and
lifetime of secondary batteries.