Stabilization of li0.33la0.55tio3 solid electrolyte interphase layer and enhancement of cycling performance of lini0.5co0.3mn0.2o2 battery cathode with buffer layer

Tan，Feihu1; An，Hua1; Li，Ning1; Du，Jun2; Peng，Zhengchun1

2021-04-01

10.3390/nano11040989

Nanomaterials   影响因子和分区

2079-4991

All-solid-state batteries (ASSBs) are attractive for energy storage, mainly because introducing solid-state electrolytes significantly improves the battery performance in terms of safety, energy density, process compatibility, etc., compared with liquid electrolytes. However, the ionic conductivity of the solid-state electrolyte and the interface between the electrolyte and the electrode are two key factors that limit the performance of ASSBs. In this work, we investigated the structure of a LiLaTiO (LLTO) thin-film solid electrolyte and the influence of different interfaces between LLTO electrolytes and electrodes on battery performance. The maximum ionic conductivity of the LLTO was 7.78 × 10 S/cm. Introducing a buffer layer could drastically improve the battery charging and discharging performance and cycle stability. Amorphous SiO allowed good physical contact with the electrode and the electrolyte, reduced the interface resistance, and improved the rate characteristics of the battery. The battery with the optimized interface could achieve 30C current output, and its capacity was 27.7% of the initial state after 1000 cycles. We achieved excellent performance and high stability by applying the dense amorphous SiO buffer layer, which indicates a promising strategy for the development of ASSBs.

All-solid-state batteries Buffer layer Interface Thin films

SCI

英语

其他

WOS:000643466800001

2-s2.0-85103877180

Scopus

1.Key Laboratory of Optoelectronic Devices and Systems,Ministry of Education and Guangdong Province,College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen,518060,China
2.School of microelectronics,South University of Science and Technology,Shenzhen,518055,China

Tan，Feihu,An，Hua,Li，Ning,et al. Stabilization of li0.33la0.55tio3 solid electrolyte interphase layer and enhancement of cycling performance of lini0.5co0.3mn0.2o2 battery cathode with buffer layer[J]. Nanomaterials,2021,11(4).

Tan，Feihu,An，Hua,Li，Ning,Du，Jun,&Peng，Zhengchun.(2021).Stabilization of li0.33la0.55tio3 solid electrolyte interphase layer and enhancement of cycling performance of lini0.5co0.3mn0.2o2 battery cathode with buffer layer.Nanomaterials,11(4).

Tan，Feihu,et al."Stabilization of li0.33la0.55tio3 solid electrolyte interphase layer and enhancement of cycling performance of lini0.5co0.3mn0.2o2 battery cathode with buffer layer".Nanomaterials 11.4(2021).