【摘 要】
：
All-solid-state lithium batteries (ASSLBs) employing sulfide electrolyte and lithium (Li) anode have received increasing attention due to the intrinsic safety a
【机 构】
：
Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory for Adva
论文部分内容阅读
All-solid-state lithium batteries (ASSLBs) employing sulfide electrolyte and lithium (Li) anode have received increasing attention due to the intrinsic safety and high energy density.However,the thick electrolyte layer and lithium dendrites formed at the electrolyte/Li anode interface hinder the realization of high-performance ASSLBs.Herein,a novel membrane consisting of Li6PSsCl (LPSCI),poly(ethylene oxide) (PEO) and Li-salt (LiTFSI) was prepared as sulfide-based composite solid electrolyte (LPSCI-PEO3-LiTFSI) (LPSCI∶PEO =97∶3 wt/wt;EO∶Li =8∶1 mol/mol),which delivers high ionic conductivity (1.1 × 10-3 S cm-1) and wide electrochemical window (4.9 V vs.LiY/Li) at 25 ℃.In addition,an ex-situ artificial solid electrolyte interphase (SEI) film enriched with LiF and Li3N was designed as a protective layer on Li anode (Li(SEI)) to suppress the growth of lithium dendrites.Benefiting from the synergy of sulfide-based composite solid electrolyte and ex-situ artificial SEI,cells of S-CNTs/LPSCI-PEO3-LiTFSI/Li(SEI) and Al2O3@LiNi0.5Co0.3Mn0.2O2/LPSCI-PEO3-LiTFSI/Li(SEI) are assembled and both exhibit high initial discharge capacity of 1221.1 mAh g-1 (135.8 mAh g-1) and enhanced cycling stability with 81.6％ capacity retention over 200 cycles at 0.05 C (89.2％ over 100 cycles at 0.1 C).This work provides a new insight into the synergy of composite solid electrolyte and artificial SEI for achieving high-performance ASSLBs.
其他文献
As promising electrode materials,transition metal oxides have attracted considerable attention owing to their excellent performance in electrochemical energy st
Dual-ion batteries (DIBs) have attracted immense interest as a new generation of energy storage device due to their low cost,environmental friendliness and high
Compared to regular conjugated polymers,the random conjugated terpolymers are usually not beneficial to achieve highly efficient non-fullerene (NF)-based polyme
The manipulation of the surface property of WO3 photoanode is the main breakthrough direction to improve its solar water oxidation performance both in thermodyn
Transition-metal based M-N4/C catalysts are appealing for electrocatalytic oxygen reduction reaction (ORR) and oxygen evolution reaction (OER).Employing model c
Excessive nitrate in groundwater has emerged as a serious environmental concern.The elevated nitrate concentration in drinking water causes a serious threat to
Lithium-sulfur(Li-S)batteries have great potential in next-generation energy storage due to its high theoretical specific capacity and energy density.However,there are several challenges to the practical application of Li-S batteries including the growth
A membrane with high stability and ion conductivity in wide pH range is essential for energy storage devices.Here,we report a novel membrane with hierarchical c
Taking advantage of the excellent stability and photoelectric properties,two-dimensional(2D)organicinorganic halide perovskites have been widely researched and applied in optoelectronic and photovoltaic devices.The remarkable properties are attributed to
Electrochemical hydrogen evolution reaction(HER) is a promising route to harvest high-purity hydrogen(H2).Efficient and selective energy transformations rely on the development of novel catalytic materials in terms of compositions and structure