CONSPECTUS:The demand for lithium ion batteries continues to expand for powering applications such as portable electronics,grid-scale energy storage,and electric vehicles.As the application requirements advance,the in...CONSPECTUS:The demand for lithium ion batteries continues to expand for powering applications such as portable electronics,grid-scale energy storage,and electric vehicles.As the application requirements advance,the innovation of lithium ion batteries toward higher energy density and power output is required.Along with the investigation of new materials,an important strategy for increasing battery energy content is to design electrodes with high areal loading to minimize the fraction of nonactive materials such as current collectors,separators,and packaging components,resulting in significant gains in energy content and the reduction of the system-level cost.However,the adoption of thick high areal loading electrodes has been impeded by sluggish charge transport and mechanical instability.With conventional slurry cast electrodes,battery function significantly deteriorates with increases in electrode thickness due to high cell polarization and the incomplete utilization of active materials.Thus,a consideration of approaches that facilitate an understanding and eventual adoption of high-loading electrodes is warranted to enable the deliberate advancement of next-generation batteries.展开更多
基金The preparation of this manuscript was supported as part of the Center for Mesoscale Transport Properties,funded by the U.S.Department of Energy,Office of Science,Basic Energy Sciences,under award no.DE-SC0012673E.S.T.acknowledges support from the William and Jane Knapp Chair in Energy and the Environment。
文摘CONSPECTUS:The demand for lithium ion batteries continues to expand for powering applications such as portable electronics,grid-scale energy storage,and electric vehicles.As the application requirements advance,the innovation of lithium ion batteries toward higher energy density and power output is required.Along with the investigation of new materials,an important strategy for increasing battery energy content is to design electrodes with high areal loading to minimize the fraction of nonactive materials such as current collectors,separators,and packaging components,resulting in significant gains in energy content and the reduction of the system-level cost.However,the adoption of thick high areal loading electrodes has been impeded by sluggish charge transport and mechanical instability.With conventional slurry cast electrodes,battery function significantly deteriorates with increases in electrode thickness due to high cell polarization and the incomplete utilization of active materials.Thus,a consideration of approaches that facilitate an understanding and eventual adoption of high-loading electrodes is warranted to enable the deliberate advancement of next-generation batteries.
