Electrochemical Properties of Composite Cathode Using Bimodal Sized Electrolyte for All-Solid-State Batteries

Park, Chanhwi; Lee, Sang-Soo; Kim, Kyu-Beom; Kim, Minhee; Choi, Seongjin; Shin, Dongwook

doi:10.1149/2.0481903jes

Cited by 47 publications

(49 citation statements)

References 25 publications

(32 reference statements)

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“…Despite being a mere proof of concept in which many parameters of importance have not been optimized (particles sizes, electrode composition, mixing technique, etc.) 36,37 , the results are truly promising. The addition of LTFS had a clear positive impact in the battery performance mainly ascribed to a lower CM/SE interface resistance.…”

Section: Figure 7 Herementioning

confidence: 90%

Li-Rich Layered Sulfide as Cathode Active Materials in All-Solid-State Li–Metal Batteries

Marchini

Saha

Corte

et al. 2020

ACS Appl. Mater. Interfaces

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Great hopes are placed on all-solid state Li-metal batteries (ASSB's) to boost the energy density of the current Li-ion technology. Though, these devices still present a number of unresolved issues that keep them far from commercialization such as interfacial instability, lithium dendrite formation and lack of mechanical integrity during cycling. To mitigate these limiting aspects, the most advanced ASSB systems presently combine a sulfide or oxide-based solid electrolyte (SE) with a coated Li-based oxide as positive electrode and a lithium anode. Through this work we propose a different twist by switching from layered oxides to layered sulfides as active cathode materials. Herein we present the performance of a Li-rich layered sulfide of formula Li 1.13 Ti 0.57 Fe 0.3 S 2 (LTFS) in room temperature operating all-solid state batteries, using β-Li 3 PS 4 as a solid electrolyte and both InLi and Li anode materials. These batteries exhibit good cyclability, small polarization and, in the case of Li anode, no irreversible capacity. Taking advantage of the stable LTFS/β-Li 3 PS 4 interface, we also propose the use of LTFS mixed with an oxide-based cathode material in the positive electrode of an ASSB. Our proof of concept using LiNi 0.6 Mn 0.2 Co 0.2 O 2 (NMC 622) showed that the addition of a small amount of LTFS had a direct positive impact in the battery performance, ascribed to the improvement of the oxide cathode/sulfide SE interface.

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Section: Figure 7 Herementioning

confidence: 90%

Li-Rich Layered Sulfide as Cathode Active Materials in All-Solid-State Li–Metal Batteries

Marchini

Saha

Corte

et al. 2020

ACS Appl. Mater. Interfaces

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“…By mixing large and small particles with optimized ratios, a better energy density could be realized [18]. Park et al [19] have reported that optimized bimodal-sized active materials can minimize voids and maximize the packing density. A bimodal structure could also improve electrochemical performance due to a large contact area between large particles and small particles [19].…”

Section: Resultsmentioning

confidence: 99%

“…Park et al [19] have reported that optimized bimodal-sized active materials can minimize voids and maximize the packing density. A bimodal structure could also improve electrochemical performance due to a large contact area between large particles and small particles [19]. The particle size and the shape of the graphite powder are shown in Figure 1c,d.…”

Section: Resultsmentioning

confidence: 99%

An Integrated Device of a Lithium-Ion Battery Combined with Silicon Solar Cells

Lim

Lee

et al. 2021

Energies

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This study reports an integrated device of a lithium-ion battery (LIB) connected with Si solar cells. A Li(Ni0.65Co0.15Mn0.20)O2 (NCM) cathode and a graphite (G) anode were used to fabricate the lithium-ion battery (LIB). The surface and shape morphologies of NCM and graphite powder were characterized by field emission scanning electron microscopy (FE-SEM). The structural properties of NCM and graphite powder were determined by X-ray diffraction (XRD) analysis. XRD patterns of powders were well matched with those of JCPDS data. To investigate the electrochemical characteristics of NCM and graphite, cycling tests were performed after assembling the NCM-Li, the G-Li half-cell, and the NCM-G full-cell. The discharge capacity of the NCM cathode at 0.1C was 189.82 mAh/g−1. The NCM-graphite full-cell showed 98.25% cycle retention at 1C after 50 cycles. To obtain enough charging voltage for the LIB connected with solar cells in an integrated device, eight single Si solar cells were connected in a series. The short-circuit photocurrent density for Si solar cells was 4.124 mA/cm2. The fill factor and the open circuit voltage were 0.78 and 4.5 V, respectively. These Si solar cells showed a power conversion efficiency of 14.45%. The power conversion andstorage efficiency of the integrated device of the NCM battery and Si solar cells was 7.74%. Charging of the integrated device could be as effective as charging with a battery cycler.

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“…[149,182] However, bimodal-sized SE powders are more desirable than those with a single particle size distribution from the view of the suppression of voids. [183] The composite cathode consisting of bimodal sized SE powders possesses the highest packing density (3.14 g cm −3 ) and the largest AM-SE contact area (62.04%) compared to those of electrodes consisting of only coarse or fine SE particles. [183] Similarly, Peng et al, studied the effect of NCA particle size on the physical contact and interfacial chemical stability between AM particles and sulfide SEs, and found that the physical contacts and interfacial compatibility were improved after the NCA was treated with ball-milling followed by post-annealing.…”

Section: Am and Se Particle Sizementioning

confidence: 97%

“…[183] The composite cathode consisting of bimodal sized SE powders possesses the highest packing density (3.14 g cm −3 ) and the largest AM-SE contact area (62.04%) compared to those of electrodes consisting of only coarse or fine SE particles. [183] Similarly, Peng et al, studied the effect of NCA particle size on the physical contact and interfacial chemical stability between AM particles and sulfide SEs, and found that the physical contacts and interfacial compatibility were improved after the NCA was treated with ball-milling followed by post-annealing. [184] Next, Strauss et al studied the relationships between the secondary particle size of the cathode AM and electrochemical performance in ASSLBs comprising NCM622, β-Li 3 PS 4 , and In anode via electrochemical tests and X-ray diffraction experiments combined with Rietveld refinement analysis.…”

Section: Am and Se Particle Sizementioning

confidence: 97%

Toward High Performance All‐Solid‐State Lithium Batteries with High‐Voltage Cathode Materials: Design Strategies for Solid Electrolytes, Cathode Interfaces, and Composite Electrodes

Duan

Jia

et al. 2021

Advanced Energy Materials

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All-solid-state lithium batteries (ASSLBs) with nonflammable solid electrolytes (SEs) deliver greatly enhanced safety characteristics. Furthermore, ASSLBs composed of cathodes with high working voltages, such as LiCoO 2 , LiNi x Co y Mn z O 2 (x + y + z = 1, NCM), LiNi x Co y Al z O 2 (x + y + z = 1, NCA), LiMn x Fe y PO 4 (x + y = 1, LMFP), and LiNi 0.5 Mn 1.5 O 4 (LNMO), and a lithium metal anode can achieve comparable or better performance compared with that of LLBs in terms of energy density. Therefore, high-voltage ASSLBs have been regarded as the most promising next-generation batteries. Although significant progress has been achieved in high-voltage ASSLBs research, their development still faces multiple challenges. To facilitate further effective and target-oriented research on highvoltage ASSLBs, a summary of recent research progress is urgently needed. In this review, recent research progress in high-voltage ASSLBs is summarized from the perspectives of SEs modification, interfacial challenges and their corresponding solutions for cathodes, and high-voltage composite cathode design for practical applications. Finally, the authors' perspectives on the state of current ASSLBs research, aiming to propose possible research directions for the future development of high-voltage ASSLBs.

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Electrochemical Properties of Composite Cathode Using Bimodal Sized Electrolyte for All-Solid-State Batteries

Cited by 47 publications

References 25 publications

Li-Rich Layered Sulfide as Cathode Active Materials in All-Solid-State Li–Metal Batteries

Li-Rich Layered Sulfide as Cathode Active Materials in All-Solid-State Li–Metal Batteries

An Integrated Device of a Lithium-Ion Battery Combined with Silicon Solar Cells

Toward High Performance All‐Solid‐State Lithium Batteries with High‐Voltage Cathode Materials: Design Strategies for Solid Electrolytes, Cathode Interfaces, and Composite Electrodes

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