Assembling All‐Solid‐State Lithium–Sulfur Batteries with Li<sub>3</sub>N‐Protected Anodes

Kızılaslan, Abdulkadir; Akbulut, Hatem

doi:10.1002/cplu.201800539

Cited by 33 publications

(19 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This mapping also shows that the sides and bottom of the isle are rich in C, F, and some N. This distribution could be the result of LiTFSI decomposition and the probable formation of a At first, Li 3 N crystal precipitates could form, which are not soluble and do not dissolve with further cycling, thus forming the isles. Kızılaslan et al 23 used Li 3 N as a protective layer on a lithium anode to enhance the cycling of the battery. After that, further decomposition of the salt may result in the formation of Li 2 S, LiC x F y , LiF, Li x CNF 3 , and Li y SO x surrounding the isle.…”

Section: Resultsmentioning

confidence: 99%

In situ observation of solid electrolyte interphase evolution in a lithium metal battery

et al. 2019

View full text Add to dashboard Cite

Lithium metal is a favorable anode material in all-solid Li-polymer batteries because of its high energy density. However, dendrite formation on lithium metal causes safety concerns. Here we obtain images of the Li-metal anode surface during cycling using in situ scanning electron microscopy. Constructing videos from the images enables us to monitor the failure mechanism of the battery. Our results show the formation of dendrites on the edge of the anode and isles of decomposed lithium bis(trifluoromethanesulfonyl)imide on the grain boundaries. Cycling at high rates results in the opening of the grain boundaries and depletion of lithium in the vicinity of the isles. We also observe changes in the surface morphology of the polymer close to the anode edge. Extrusion of lithium from these regions could be evidence of polymer reduction due to a local increase in temperature and thermal runaway assisting in dendrite formation.

show abstract

Section: Resultsmentioning

confidence: 99%

In situ observation of solid electrolyte interphase evolution in a lithium metal battery

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Synthesis of solid electrolyte used in this study was reported in the previous study. [ 10 ] Phase analysis of MoS 2 coating was carried out by Rigaku D/MAX 2000 type X‐ray spectrometer with Cu K α radiation between 5° and 90° with 1° min −1 scan rate. The morphology and elemental mapping of the MoS 2 coating were observed with an FESEM (FEI Quanta FEG 450).…”

Section: Methodsmentioning

confidence: 99%

“…Li 3 N coating was shown to increase capacity retention in our previous study. [ 10 ] However, the small grain sizes (<160 nm), and weak interconnection is not capable of suppressing Li metal dendrites for long cycles. [ 11 ] Moreover, the voltage stability window of Li 3 N is only ≈0.45 V and unstable to reduction (≤2.4 V vs Li/Li + ) which is low for practical applications.…”

Section: Introductionmentioning

confidence: 99%

2H‐MoS₂ as an Artificial Solid Electrolyte Interface in All‐Solid‐State Lithium–Sulfur Batteries

Kızılaslan

Çetinkaya

Akbulut

2020

Adv Materials Inter

Self Cite

View full text Add to dashboard Cite

Regardless of the battery type, Li-ion (sulfur) or Li-O 2 , it is rational to consider the lithium metal as the anode material in these batteries due to several aspects. First, it is the lightest solid (0.534 g cm −3) in the whole periodic table and has the lowest electrode potential with −3.04 V. [4,5] Second, as a pure lithium source, an intercalation or conversion reaction media is not necessarily required in batteries with lithium anodes. Overall, lithium metal has a theoretical specific capacity of ≈3860 mAh g −1. [4] However, many problems arising from the highly reactive nature of lithium metals, namely; 1) uncontrollable dendrite formation during lithium deposition\dissolution and 2) unstable solid-electrolyte interface (SEI) layer formation, restricts its use in secondary batteries. All-solid-state LIBs (ASSLIBs) are now emerging systems to replace LIBs with liquid electrolytes and are free of the aforementioned problems in certain aspects. Solid-electrolytes were shown to greatly suppress the formation of lithium dendrites. However, the formation of an unstable SEI layer still exists in ASSLIBs. Although solid electrolytes with lithium-ion conductivity on the order of liquid electrolytes have been synthesized, [6-9] their adaption into a cell with lithium anode is hindered due to the formation of unstable SEI layer. A stable SEI layer has to meet several criteria. First, an SEI layer has to be composed of electronically (ionically) insulating (conducting) phases. Besides, the layer should be thin and dense enough so that the total impedance of the system does not increase due to the low ionic conductivity of the layer. Unfortunately, only a few numbers of solid electrolytes exist that satisfies the above mentioned criteria. One plausible way to avoid the self-formation of the unstable SEI layer is to coat the lithium anode with the phases having desired properties. By coating lithium anode; 1) the contact between anode and electrolyte can be increased due to better wetting, 2) dendrite formation can be eliminated, and 3) electrolyte decomposition can be prevented. Li 3 N coating was shown to increase capacity retention in our previous study. [10] However, the small grain sizes (<160 nm), and weak interconnection is not capable of suppressing Li metal dendrites for long cycles. [11] Moreover, the voltage stability window of Li 3 N is only ≈0.45 V and unstable to reduction (≤2.4 V vs Li/Li +) which is low for practical applications. [12] An ultrathin Al 2 O 3 layer was shown to increase the wetting and electrochemical stability of the garnet-type solid All-solid-state lithium-ion batteries are considered the next-generation energy storage systems. However, certain problems arise from the degradation of anode-electrolyte interface hindering their use especially when lithium is used as an anode. Herein, lithium metal anode surface is modified by an artificial 2H-MoS 2 layer to prevent the contact between highly reactive lithium and solid electrolyte without sacrificing the lithium ion transport. The stabili...

show abstract

“…The electrolyte solution was prepared by lithium bis(trifluoromethanesulfonyl)imide (10.0 g), and LiNO 3 (0.24 g) in solution of 1,3‐dioxolane (17 ml) and 1,2‐dimethoxyethane (17 ml). Button cells (CR2032‐type) were assembled with as‐synthesized polypropylene films, anode, cathode and electrolyte in glovebox under Ar atmosphere …”

Section: Methodsmentioning

confidence: 99%

“…Button cells (CR2032-type) were assembled with as-synthesized polypropylene films, anode, cathode and electrolyte in glovebox under Ar atmosphere. [40] The electrochemical workstation (CHI 660B) was employed to measure the electrochemical impedance spectrometry (EIS) of cells with a perturbation of 5 mV between 0.1 Hz to 100 kHz. The galvanostatic charge-discharge test was performed between 1.8 and 3.0 V by using a battery test system (LAND CT2001A).…”

Section: Electrochemical Measurementsmentioning

confidence: 99%

Calixarene‐Functionalized Porous Carbon Aerogels for Polysulfide Capture: Cathodes for High Performance Lithium‐Sulfur Batteries

Zhang

Gao

et al. 2019

ChemPlusChem

View full text Add to dashboard Cite

A cage‐type composite was successfully prepared by attaching p‐sulfonatocalix[4]arene to a porous activated carbon aerogel (ACA). The resulting composite showed a high specific surface area of 1620.7 m2 g−1 and a high sulfur loading of 2.5 mg cm−2. The calixarene is uniformly dispersed on the carbon spheres and efficiently captures polysulfides by interaction with the sulfonate groups. Meanwhile, the cross‐linked porous structure of the composite restricts the migration of polysulfides. The cathode delivers an outstanding electrochemical performance with an initial capacity of 1304.7 mAh g−1 at 0.2 C. Furthermore, it displays excellent long‐term cycling stability, maintaining 884.7 mAh g−1 after 300 cycles at 0.5 C. Density functional theory (DFT) adsorption calculations support the strong interaction between the calixarenes and polysulfides and reveal the capture mechanism.

show abstract

Assembling All‐Solid‐State Lithium–Sulfur Batteries with Li₃N‐Protected Anodes

Cited by 33 publications

References 17 publications

In situ observation of solid electrolyte interphase evolution in a lithium metal battery

In situ observation of solid electrolyte interphase evolution in a lithium metal battery

2H‐MoS₂ as an Artificial Solid Electrolyte Interface in All‐Solid‐State Lithium–Sulfur Batteries

Calixarene‐Functionalized Porous Carbon Aerogels for Polysulfide Capture: Cathodes for High Performance Lithium‐Sulfur Batteries

Contact Info

Product

Resources

About

Assembling All‐Solid‐State Lithium–Sulfur Batteries with Li3N‐Protected Anodes

Cited by 33 publications

References 17 publications

In situ observation of solid electrolyte interphase evolution in a lithium metal battery

In situ observation of solid electrolyte interphase evolution in a lithium metal battery

2H‐MoS2 as an Artificial Solid Electrolyte Interface in All‐Solid‐State Lithium–Sulfur Batteries

Calixarene‐Functionalized Porous Carbon Aerogels for Polysulfide Capture: Cathodes for High Performance Lithium‐Sulfur Batteries

Contact Info

Product

Resources

About

Assembling All‐Solid‐State Lithium–Sulfur Batteries with Li₃N‐Protected Anodes

2H‐MoS₂ as an Artificial Solid Electrolyte Interface in All‐Solid‐State Lithium–Sulfur Batteries