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Integrated Energy Conversion and Storage Device for Stable Fast Charging Power Systems
ECS Journal of Solid State Science and Technology ( IF 1.8 ) Pub Date : 2020-12-01 , DOI: 10.1149/2162-8777/abcc49
Jihun Kim 1 , Hyeonghun Park 1 , Junsung Jang 2 , Hyeongi Song 1 , Byeong Hoon Lee 2 , Dongmin Lee 2 , Suyoung Jang 2 , Jin Hyeok Kim 2 , Hyeong-Jin Kim 1
Affiliation  

Herein, an integrated device that comprises inorganic kesterite solar cells and Li-ion batteries (LIBs) has been proposed for application in fast photo-charging power systems. LiFePO4 and Li4Ti5O12 were selected as the battery electrode materials and six kesterite solar cells connected in series were fabricated to satisfy the charging voltage required for LIBs. Photo-charging was conducted at the rate of 1C (1.790 mAh g−1) at 2.1 V. An energy conversion and storage efficiency of 3.87% was acquired in the integrated device, and a storage efficiency of over 70% was observed in LIBs. Furthermore, by synchronizing the charging voltage of the solar cell and LIB, over 70% of the capacity was obtained at the rate of 1C, while preventing overvoltage during long-term charging.



中文翻译:

用于稳定快速充电电源系统的集成式能量转换和存储设备

在本文中,已经提出了包括无机碳酸锂沸石太阳能电池和锂离子电池(LIB)的集成装置以用于快速光充电功率系统中。选择LiFePO 4和Li 4 Ti 5 O 12作为电池电极材料,并制造了六个串联的硅藻土太阳能电池,以满足LIB所需的充电电压。以1C(1.790 mAh g -1)在2.1 V时。集成器件中的能量转换和存储效率为3.87%,LIB中的存储效率超过70%。此外,通过同步太阳能电池和LIB的充电电压,以1C的速率获得了超过70%的容量,同时防止了长期充电期间的过电压。

更新日期:2020-12-01
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