%0 Journal Article
%A Kin, Li-chung
%A Liu, Zhifa
%A Astakhov, Oleksandr
%A Agbo, Solomon N.
%A Tempel, Hermann
%A Yu, Shicheng
%A Kungl, Hans
%A Eichel, Rüdiger-A.
%A Rau, Uwe
%A Kirchartz, Thomas
%A Merdzhanova, Tsvetelina
%T Efficient Area Matched Converter Aided Solar Charging of Lithium Ion Batteries Using High Voltage Perovskite Solar Cells
%J ACS applied energy materials
%V 3
%N 1
%@ 2574-0962
%C Washington, DC
%I ACS Publications
%M FZJ-2020-00823
%P 431 - 439
%D 2020
%X Efficient solar charging of a battery has been demonstrated in the past by sizing batteries many times that of a solar cell to reduce the effective current density experienced by the battery. Although efficient, such a strategy of coupling a battery up to 10 times larger with a solar cell will make solar–battery integration more challenging and limit the size, and thus maximum power output, of an integrated device. Area matched LFP-LTO (lithium iron phosphate, lithium titanate) battery solar charging using high voltage lead halide perovskite solar cells with a boost converter gave a maximum overall efficiency of 9.9% and a high 14.9% solar to battery charging efficiency. Two differently sized systems were compared using the same converter, and an exergy analysis was performed, showing limitations of converter usage in solar-powered internet of things (IoT) devices and size dependent battery losses.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000510104700050
%R 10.1021/acsaem.9b01672
%U https://juser.fz-juelich.de/record/873555