Development of bulk-type all-solid-state lithium-sulfur battery using LiBH4 electrolyte

Unemoto, Atsushi; Yasaku, Syun; Nogami, Genki; Tazawa, Masaru; Taniguchi, Mitsugu; Matsuo, Motoaki; Ikeshoji, Tamio; Orimo, Shin Ichi

doi:10.1063/1.4893666

Cited by 119 publications

(93 citation statements)

References 35 publications

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“…The appearance of our battery and the con guration of the electrochemical system appeared have been given elsewhere. [11][12][13] For microstructure observation and element distribution analysis, a cross-section of the composite positive electrode was produced by a focused ion beam (FIB, FB2200, Hitachi High-Technologies Corp.) with Ga-ion beam radiation. For this purpose, a eld-emission scanning electron microscopy (FE-SEM, SU9000, Hitachi High-Technologies Corp.) and an energy dispersive X-ray (EDX, Apollo XLT, Ametek, Inc.) were employed.…”

Section: Methodsmentioning

confidence: 99%

“…As a result, repeated operation of the battery was successfully demonstrated. 9,10) On the other hand, considering the high reducing ability of the complex hydride electrolyte, our research group has proposed a battery design principles that uses positive electrodes with a lower voltage and high capacity electrodes including TiS 2 7,11) and elemental sulfur, 12,13) combined with a lithium negative electrode. Repeated operation of the batteries based on this design concept has also been successfully demonstrated.…”

Section: -7)mentioning

confidence: 99%

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Development of 4V-Class Bulk-Type All-Solid-State Lithium Rechargeable Batteries by a Combined Use of Complex Hydride and Sulfide Electrolytes for Room Temperature Operation

et al. 2017

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We have operated a 4V-class bulk-type, all-solid-state LiCoO 2 /Li battery at room temperature. The battery consisted of a Li 4 (BH 4 ) 3 I complex hydride electrolyte as the electrolyte layer, and a 80Li 2 S 20P 2 S 5 sul de glass as an electrolyte in the positive electrode layer. The assembled battery exhibited a 92 mAh g −1 initial discharge capacity at 298 K and 0.1 C. The discharge capacity for the 20 th cycle remained as high as 83 mAh g −1 , corresponding to a capacity retention ratio of nearly 90%.

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Section: Methodsmentioning

confidence: 99%

Section: -7)mentioning

confidence: 99%

Development of 4V-Class Bulk-Type All-Solid-State Lithium Rechargeable Batteries by a Combined Use of Complex Hydride and Sulfide Electrolytes for Room Temperature Operation

et al. 2017

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“…5). Soluble long-chain polysulfides can also be avoided by using solid [107][108][109][110][111] or solid-like In addition to the structures described above, great interest lies in encapsulating sulfur at high content (>60 wt%) in activated carbons possessing wide pores to form an SEI-type protecting film on the surface of the composite sulfur-carbon cathodes 117,118 , as is schematically shown in structure 6 in FIG. 5.…”

Section: Long-term Technologiesmentioning

confidence: 99%

Promise and reality of post-lithium-ion batteries with high energy densities

2016

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What characteristics define a good rechargeable battery? Although properties such as rate capability, cost, cycle life and temperature tolerance must be taken into consideration in any evaluation of a rechargeable battery 1,2 , it is the improvement in energy density that has primarily driven the overall technological progress over the past 150 years -from lead-acid cells in the 1850s, nickelcadmium cells in the 1890s and nickel metal hydride cells in the 1960s to, finally, lithium-ion batteries (LIBs) in the present day.In the current era of LIBs, there is an ever-growing demand for even higher energy densities to power mobile IT devices with increased power consumption and to extend the driving range of electric vehicles. The growth of the global electric vehicle market has been slower than initially predicted about 5 years ago 3 , which reflects the challenge that the battery industry faces: customers react very sensitively to the driving range (and thus the energy density) and price of electric vehicles. Because the energy density of a rechargeable battery is determined mainly by the specific capacities and operating voltages of the anode and the cathode, active materials have been the main focus of research in recent years. Other cell components, including separators, binders, outer cases and, to some extent, the major components of the electrolyte solution (that is, solvent and salt), have little room for further improvement. In other words, a dramatic increase in the energy density requires new redox chemistries between charge-carrier ions and host materials beyond the conventional 'intercalation' mechanisms 4 . Intercalationbased materials have a relatively small number of crystallographic sites for storing charge-carrier ions, leading to limited energy densities. For this reason, the electrodes that operate on the basis of distinct solid-state reactions, such as alloying and conversion, or that use gas-phase reactants have encountered growing interest owing to the likelihood that they will surpass the energy densities of intercalation-based electrodes.New chemistries for charge-carrier ion storage serve as the basis for 'beyond intercalation' or so-called postLIBs 5-7 . The systems governed by these new chemistries offer higher theoretical energy densities, and this benefit is usually translated to, at least, the initial cycles in experimental testing. It is becoming increasingly evident that the short lifetime is a serious problem of post-LIB systems. Indeed, the main technological challenge associated with these systems is overcoming their inferior reversibility. The main factors responsible for the low reversibility are instabilities during the phase transition of active materials and/or uncontrolled reactions at the electrode/electrolyte interface 8 ; this implies that the electrode structures and electrolyte solutions should be developed and optimized as integrated systems to enable the realization of post-LIBs.In this Review, we discuss a wide range of promising post-LIBs, focusing on their advant...

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“…These values were similar to the literature data in which a = 0.95771(2) nm. 35) Regardless of the preparation method, Li 2 B 12 H 12 allowed for the assembly of the bulk-type all-solid-state batteries merely by uniaxial pressing at room temperature, i.e., cold-pressing similar to that used for LiBH 4 , because of their high deformability, 7,[16][17][18][19][20] as a photograph shown in Fig. 2.…”

Section: Battery Assembly and Testingmentioning

confidence: 99%

“…7) Recently, we demonstrated the repeated operation of a bulk-type all-solid-state lithium rechargeable battery that uses the LiBH 4 -based electrolytes. 7,[16][17][18][19][20] Hence, this class of the materials is considered to represent the third family of solid-state electrolyte, after sul des and oxides. The solid-state battery that uses LiBH 4 could only operate at temperatures above 393 K, at which point, the LiBH 4 electrolyte exhibited high lithium-ionic conductivity.…”

Section: Introductionmentioning

confidence: 99%

Bulk-Type All-Solid-State Lithium Batteries Using Complex Hydrides Containing Cluster-Anions

et al. 2016

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In this study, we incorporated fast lithium ion conducting complex hydrides containing cluster anions, namely icosahedral dodecahydro-closo-dodecaborate anions, [B 12 H 12 ] 2− , into a bulk-type all-solid-state battery. Li 2 B 12 H 12 , TiS 2 and Li were used as an electrolyte, a positive electrode active material and a negative electrolyte, respectively, for a battery assembly to investigate its battery performance. Bulk-type battery contains high quantity of electrode active materials in the electrode layer, and thereby the enhanced energy-storage density is expected. In addition, non ammable solid-state electrolyte would ensure the safety, which is currently problematic for the conventional lithium rechargeable battery that uses organic liquid electrolyte. Li 2 B 12 H 12 has a high lithium ionic conductivity of log(σ/S cm −1 ) = −2.6 at 393 K. It exhibits a relatively higher conductivity of log(σ/S cm −1 ) = −3.5 at reduced temperatures such as 333 K. These high lithium ionic conductivity allows for the repeated operation of the bulk-type all-solid-state TiS 2 /Li battery for at least 10 cycles at not only 393 K but also 333 K with the discharge capacities higher than 190 mAh g −1 . Li 2 B 12 H 12 exhibits higher oxidative stability. Thus, our battery realized high coulombic ef ciencies of over 92% during the battery operation. This information will be bene cial for the further development of novel complex hydride-based electrolyte to have high-performance bulk-type all-solid-state batteries.

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Development of bulk-type all-solid-state lithium-sulfur battery using LiBH4 electrolyte

Cited by 119 publications

References 35 publications

Development of 4V-Class Bulk-Type All-Solid-State Lithium Rechargeable Batteries by a Combined Use of Complex Hydride and Sulfide Electrolytes for Room Temperature Operation

Development of 4V-Class Bulk-Type All-Solid-State Lithium Rechargeable Batteries by a Combined Use of Complex Hydride and Sulfide Electrolytes for Room Temperature Operation

Promise and reality of post-lithium-ion batteries with high energy densities

Bulk-Type All-Solid-State Lithium Batteries Using Complex Hydrides Containing Cluster-Anions

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