Composite Electrolytes Based on Poly(Ethylene Oxide) and Lithium Borohydrides for All-Solid-State Lithium-Sulfur Batteries

Zhang，Xiang1; Zhang，Tengfei1; Shao，Yifei1; Cao，Hailin2; Liu，Zhenhua1; Wang，Shuai2; Zhang，Xiaogang1

2021

10.1021/acssuschemeng.1c00381

ACS Sustainable Chemistry & Engineering   影响因子和分区

2168-0485

2168-0485

Complex hydride LiBH4 is a promising solid-state electrolyte (SSE) for rechargeable batteries, owing to its great compatibility with the lithium metal anode and good mechanical properties. However, LiBH4 only exhibits high ionic conductivity (10-3 S cm-1) with the hexagonal structure at temperatures above 117 °C. To overcome this obstacle, composite poly(ethylene oxide)-hydride electrolytes were synthesized by a solution-casting method. PEO-Li4(BH4)3I (EO/Li+ = 10) delivers the highest ionic conductivity of 4.09 × 10-4 S cm-1 with high Li+ transference number of 0.45 at 70 °C. The addition of nano-SiO2 as an inorganic filler enhances the dendrite-free ability of electrolyte membranes dramatically and prolongs the cycle life of the Li symmetric battery from <100-360 h. In order to suppress the shuttling effect of polysulfide and volume expansion in lithium-sulfur (Li-S) batteries, sulfurized pyrolyzed poly(acrylonitrile) was selected as the cathode material for all-solid-state batteries, which presented a remarkable cycling stability of 232 (967 for sulfur content) mA h g-1 after 75 cycles. These attempts not only decrease the application temperature of LiBH4 but also broaden the utilization of hydride in SSEs.

complex hydride composite electrolyte lithium-sulfur battery PEO solid-state electrolyte sulfurized pyrolyzed poly(acrylonitrile)

SCI ; EI

英语

其他

National Natural Science Foundation of China["U1802256",51802154,51672128,21773118,21875107,21905134]

Chemistry ; Science & Technology - Other Topics ; Engineering

Chemistry, Multidisciplinary ; Green & Sustainable Science & Technology ; Engineering, Chemical

WOS:000642355100017

AMER CHEMICAL SOC

20211910309773

Aliphatic compounds ; Cathodes ; Ethylene ; Hydrides ; Ionic conductivity ; Lithium batteries ; Lithium compounds ; Lithium sulfur batteries ; Polyethylene oxides ; Silica ; Solid state devices ; Solid-State Batteries

Primary Batteries:702.1.1 ; Semiconductor Devices and Integrated Circuits:714.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Organic Compounds:804.1 ; Inorganic Compounds:804.2 ; Organic Polymers:815.1.1

2-s2.0-85105070680

Scopus

1.Jiangsu Key Laboratory of Electrochemical Energy-Storage Technologies,College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing,No. 29 Yudao Street, Qinhuai District,210016,China
2.Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,No. 1088 Xueyuan Avenue, Nanshan District,518055,China

Zhang，Xiang,Zhang，Tengfei,Shao，Yifei,et al. Composite Electrolytes Based on Poly(Ethylene Oxide) and Lithium Borohydrides for All-Solid-State Lithium-Sulfur Batteries[J]. ACS Sustainable Chemistry & Engineering,2021,9(15):5396-5404.

Zhang，Xiang.,Zhang，Tengfei.,Shao，Yifei.,Cao，Hailin.,Liu，Zhenhua.,...&Zhang，Xiaogang.(2021).Composite Electrolytes Based on Poly(Ethylene Oxide) and Lithium Borohydrides for All-Solid-State Lithium-Sulfur Batteries.ACS Sustainable Chemistry & Engineering,9(15),5396-5404.

Zhang，Xiang,et al."Composite Electrolytes Based on Poly(Ethylene Oxide) and Lithium Borohydrides for All-Solid-State Lithium-Sulfur Batteries".ACS Sustainable Chemistry & Engineering 9.15(2021):5396-5404.