# Fileset

[250301_Supplementary of BTO_SAM_DSY.docx](https://mdr.nims.go.jp/filesets/81f2f2ed-8d3c-409e-86a2-45ef7ea57dc7/download)

## Creator

Shuyu Dong, Yiyi Zheng, Qiaohui Duan, Yu Zhao, Tian Tan, Yu Zhou, Tian Rao, Hanbing Yan, Weiqian Guo, [Denis Y. W. Yu](https://orcid.org/0000-0002-5883-7087)

## Rights

[In Copyright](http://rightsstatements.org/vocab/InC/1.0/)

## Other metadata

[Surface-modified BaTiO<sub>3</sub> as a functional filler in poly(ethylene oxide)-based solid polymer electrolytes for lithium-metal batteries](https://mdr.nims.go.jp/datasets/9b44b69b-954c-43fe-99e1-4a040ddd48b5)

## Fulltext

Surface-modified BaTiO3 as a functional filler in poly(ethylene oxide)-based solid polymer electrolytes for lithium-metal batteries Shuyu Donga, Yiyi Zhenga, Qiaohui Duana, Yu Zhaoa, Tian Tana, Yu Zhoua, Tian Raoa, Hanbing Yanb, Weiqian Guob, Denis Y. W. Yuc*aSchool of Energy and Environment, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, ChinabTsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, ChinacResearch Center for Energy and Environmental Materials (GREEN), National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan* Corresponding authorEmail: yu.denis@nims.go.jpAddress: Namiki 1-1, Tsukuba, Ibaraki-ken, Japan 305-0044Figure S1. Schematic diagram of the coating process of BTO@TESPN.Figure S2. Optical photographs of PEO, BTO@PEO and BTO@TESPN@PEO electrolytes.Figure S3. Electrochemical impedance plots of a) PEO, b) BTO@PEO, c) BTO@TESPN@PEO electrolytes in stainless steel-stainless steel symmetric cells at 30-60 ℃.Figure S4. Li-transfer number of PEO and BTO@PEO SPE.Figure S5. Linear sweep voltammetry plots of PEO, BTO@PEO and BTO@TESPN@PEO electrolytes at a scan rate of 0.1 mV s-1 at 60 C with stainless steel working electrode and Li counter electrode. Figure S6. Linear sweep voltammograms of Li-Li symmetric cell with PEO, BTO@PEO and BTO@TESPN@PEO electrolytes from -0.25 V to 0.25 V with a scan rate of 1 mV s-1.Figure S7. Tafel plots and exchange current density of BTO@PEO obtained from the linear sweep voltammetry tests in the range of -0.25 V to 0.25 VFigure S8. Critical current density of symmetric cells with BTO@PEO electrolytes from a rate-performance test with a capacity of 0.1 mAh cm-2 per half cycle.Figure S9. Galvanostatic cycling of Li-Li symmetric cell with a) PEO, b) BTO@PEO from 0.1 to 0.4 mA cm-2 with a capacity limit of 0.05 to 0.2 mAh cm-2 (half hour charge/half hour discharge).Figure S10. Galvanostatic cycling of Li-Li symmetric cell with BTO@PEO electrolytes with 0.1 mA cm-2.Figure S11. SEM images of Li anode after 10 cycles at 0.1 mA cm-2 /0.1 mAh cm-2 with PEO and BTO@TESPN@PEO electrolytes.Table S1. Comparison of capacity of PEO-based electrolyte Electrolyte compositions Li+:EO Specificcapacity(mAh g-1) Cyclenumber Capacityretention Working temperature(℃) Currentdensity PEO+LLZO+SCN[1] 1:18 130.2 500 80% 60 1.0 C PEO+SN+LiAlO2[2] 1:10 141.3 25 84.9% 60 1.0 C PEO+LLZTO+SN[3] 1:18 151.1 200 98% 60 0.5 C PEO+LLZTO@PDA[4] 1:8 142.6 50 99% 50 0.2 C PEO+PI[5] 1:15 138 300 96% 60 0.5 C PEO+MOF[6] 1:18 151 100 95% 60 0.5 C PEO+aligned LAGP[7] 1:8 148.7 300 93.3% 60 0.3 C PEO+LLZO[8] 1:16 162.7 120 91.7% 60 0.1 C PEO+KPF6[9] 1:16 142.1 200 91.3% 60 0.5 C PEO+H2TPP(PEG)4[10] - 158.2 120 97.1% 60 0.2 C PEO+LS-AFE[11] 1:16 112.4 150 96.7% 60 2.0 C PEO+SBA-LiIL[12] 1:16 150.3 90 88.4% 60 0.07 C PEO+HPEA[13] 1:26 155.4 110 90.8% 50 0.1 C PEO+BTO@TESPN(our work) 1:20 155.4 700 93.0% 60 0.5 CReferences[1]  F. Chen, W. Zha, D. Yang, S. Cao, Q. Shen, L. Zhang, D. R. Sadoway, J. Electrochem. Soc. 2018, 165, A3558.[2]  N. Zhang, J. He, W. Han, Y. Wang, J. Mater. Sci. 2019, 54, 9603.[3]  W. Zha, F. 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Interfaces 2019, 11, 43146.image5.emf0 1000 2000 3000 4000 5000 6000 70000204060801001201401601802000 20 40 60 80020406080BeforeAfter-Z'' (Ω)Z' (Ω)Current (mA)Time (s)BTO@PEOtLi+=0.16image6.emf2.5 3.0 3.5 4.0 4.5 5.0 5.5012345678910Current (μA)Voltage (V)PEOBTO@PEOBTO@TESPN@PEOimage7.emf-0.2 -0.1 0.0 0.1 0.2-6-5-4-3-2-10123Current (mA)Voltage (V)PEOBTO@PEOBTO@TESPN@PEOimage8.emf-0.2 -0.1 0.0 0.1 0.2-6.0-5.5-5.0-4.5-4.0-3.5-3.0-2.5-2.0Log |i| (A)Voltage (V)       BTO@PEO   1.22*10-1 mA cm-2image9.emf0 5 10 15 20 25 30 35 40Voltage (V)Time (h)BTO@PEO60℃ 0.1mAh cm-21.1 mA cm-2image10.pngimage11.emf0 100 200 300 400 500 600-0.08-0.040.000.040.08Voltage (V)Time (h)BTO@PEO0.1mA cm-20.05mA cm-260℃ 0.1 mAh cm-2image12.pngimage1.pngimage2.pngimage3.pngimage4.emf0 1000 2000 3000 4000 5000 6000 70000204060801001201401601802000 20 40 60 80020406080BeforeAfter-Z'' (Ω)Z' (Ω)Current (mA)Time (s)PEOtLi+=0.17