Enhanced energy density and electrochemical performance of all-solid-state lithium batteries through microstructural distribution of solid electrolyte

Noh, Sungwoo; Nichols, William T.; Park, Chanhwi; Shin, Dongwook

doi:10.1016/j.ceramint.2017.08.176

Cited by 31 publications

(42 citation statements)

References 20 publications

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“…Reproduced with permission. [ 103 ] Copyright 2017, Elsevier. d) Modeling results demonstrating the cathode utilization ( θ CAM ) as a function of cathode fraction ( f CAM ) and particle size ratio ( λ ) and initial charge/discharge curves of SSLBs using 5 μm NCM and Li 2 S·P 2 S 5 with different size.…”

Section: Structural Design Of Cathode Electrode Concerning Interfaciamentioning

confidence: 99%

“…The similar limitation in ionic conducting from high ratio of cathode materials was reported in systems with carbon additives as well. [ 102,103 ]…”

Section: Structural Design Of Cathode Electrode Concerning Interfaciamentioning

confidence: 99%

“…In practical experiment, Noh et al validated that size decreased sulfide by milling could fill the voids in the composite electrode, thereby providing sufficient ionic transportation and high reversible capacity (Figure 8c). [ 103 ] From microstructural modeling, Shi et al demonstrated that the cathode utilization, the fraction of active particles that ionically connected, increases with decreasing cathode loading and increasing particle size ratio. [ 105 ] Therefore, to fabricate a high energy density electrode with high cathode loading, a large size ratio should be used (Figure 8d).…”

Section: Structural Design Of Cathode Electrode Concerning Interfaciamentioning

confidence: 99%

See 2 more Smart Citations

Structure Design of Cathode Electrodes for Solid‐State Batteries: Challenges and Progress

Zhang

Yue²,

Liang

et al. 2020

Small Structures

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Solid‐state lithium batteries have aroused wide interest with the probability to guarantee safety and high energy density at the same time. In the past decade, fruitful endeavors have been devoted to promoting each component of these batteries, including solid electrolyte with high conductivity, dendrite‐free lithium anode, and high‐capacity cathode. However, the currently achieved cell performances are still inconsistent with the original expectations, in which interfaces severely hamper the energy output and cycling stability for practical application. Herein, particular attentions are paid to the interface between cathode and solid electrolyte. The huge resistance caused at this interface can be found throughout the entire life of batteries from preparation to operation. Accordingly, these issues are divided into physical contact, thermal interdiffusion, space‐charge layer, electrochemomechanical breakdown, and undesirable side reactions and further elucidated in detail. Moreover, representative developments concerning the cathode/solid electrolyte interface in terms of compositional and morphological control in cathode, architecture and manufacture design in solid electrolyte, and artificial interphase building are summarized. With these efforts, the emphasis of the fundamental issues and perspectives of interface between cathode and solid electrolyte may eventually contribute to high‐energy long‐cycling solid‐state lithium batteries.

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Section: Structural Design Of Cathode Electrode Concerning Interfaciamentioning

confidence: 99%

“…The similar limitation in ionic conducting from high ratio of cathode materials was reported in systems with carbon additives as well. [ 102,103 ]…”

Section: Structural Design Of Cathode Electrode Concerning Interfaciamentioning

confidence: 99%

Section: Structural Design Of Cathode Electrode Concerning Interfaciamentioning

confidence: 99%

See 1 more Smart Citation

Structure Design of Cathode Electrodes for Solid‐State Batteries: Challenges and Progress

Zhang

Yue²,

Liang

et al. 2020

Small Structures

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show abstract

“…In addition to this morphological change of the sulfide SEs to the core–shell structure, researchers have focused on decreasing the size of the sulfide SEs to ensure homogeneous contact with the active materials. Noh et al revealed that decreasing the size of the sulfide SEs could increase the contact area and fill the voids between the active materials and the sulfide SEs, thereby forming a facile lithium ion pathway . As shown in Figure a, whereas the standard sulfide SEs display an average size of 10.3 µm and a Brunauer–Emmett–Teller surface area of 0.46 m 2 g −1 , those of milled sulfide SEs are 1.6 µm and 3.80 m 2 g −1 , respectively.…”

Section: Recent Progress In Electrode Materialsmentioning

confidence: 99%

Section: Recent Progress In Electrode Materialsmentioning

confidence: 99%

Advances and Prospects of Sulfide All‐Solid‐State Lithium Batteries via One‐to‐One Comparison with Conventional Liquid Lithium Ion Batteries

et al. 2019

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Owing to the safety issue of lithium ion batteries (LIBs) under the harsh operating conditions of electric vehicles and mobile devices, all‐solid‐state lithium batteries (ASSLBs) that utilize inorganic solid electrolytes are regarded as a secure next‐generation battery system. Significant efforts are devoted to developing each component of ASSLBs, such as the solid electrolyte and the active materials, which have led to considerable improvements in their electrochemical properties. Among the various solid electrolytes such as sulfide, polymer, and oxide, the sulfide solid electrolyte is considered as the most promising candidate for commercialization because of its high lithium ion conductivity and mechanical properties. However, the disparity in energy and power density between the current sulfide ASSLBs and conventional LIBs is still wide, owing to a lack of understanding of the battery electrode system. Representative developments of ASSLBs in terms of the sulfide solid electrolyte, active materials, and electrode engineering are presented with emphasis on the current status of their electrochemical performances, compared to those of LIBs. As a rational method to realizing high energy sulfide ASSLBs, the requirements for the sulfide solid electrolytes and active materials are provided along through simple experimental demonstrations. Potential future research directions in the development of commercially viable sulfide ASSLBs are suggested.

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Mixed Electronic and Ionic Conduction Properties of Lithium Lanthanum Titanate

Wang

Wolfenstine

Sakamoto

2020

Adv Funct Materials

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With the continued increase in Li‐metal anode rate capability, there is an equally important need to develop high‐rate cathode architectures for solid‐state batteries. A proposed method of improving charge transport in the cathode is introducing a mixed electronic and ionic conductor (MEIC) which can eliminate the need for conductive additives that occlude electrolyte–electrode interfaces and lower the net additive required in the cathode. This study takes advantage of a reduced perovskite electrolyte, Li0.33La0.57TiO3 (LLTO), to act as a model MEIC. It is found that the ionic conductivity of reduced LLTO is comparable to oxidized LLTO (σbulk = 10−3–10−4 S cm−1, σGB = 10−5–10−6 S cm−1) and the electronic conductivity is 1 mS cm−1. The ionic transference numbers are 0.9995 and 0.0095 in the oxidized and reduced state, respectively. Furthermore, two methods for controlling the transference numbers are evaluated. It is found that the electronic conductivity cannot easily be controlled by changing O2 overpressures, but increasing the ionic conductivity can be achieved by increasing grain size. This work identifies a possible class of MEIC materials that may improve rate capabilities of cathodes in solid‐state architectures and motivate a deeper understanding of MEICs in the context of solid‐state batteries.

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Enhanced energy density and electrochemical performance of all-solid-state lithium batteries through microstructural distribution of solid electrolyte

Cited by 31 publications

References 20 publications

Structure Design of Cathode Electrodes for Solid‐State Batteries: Challenges and Progress

Structure Design of Cathode Electrodes for Solid‐State Batteries: Challenges and Progress

Advances and Prospects of Sulfide All‐Solid‐State Lithium Batteries via One‐to‐One Comparison with Conventional Liquid Lithium Ion Batteries

Mixed Electronic and Ionic Conduction Properties of Lithium Lanthanum Titanate

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