Preparation of thin solid electrolyte by hot-pressing and diamond wire slicing

Kotobuki, Masashi; Lei, Houhua; Chen, Yu; Song, Shufeng; Xu, Chaohe; Hu, Ning; Molenda, Janina; Li, Lü

doi:10.1039/c9ra00711c

Cited by 26 publications

(8 citation statements)

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“…LAGP also possesses a high Li ion conductivity of 3.38 × 10 −4 S cm −1 [18]. So far, LAGP solid electrolytes have been prepared using the meltquenching [19][20][21][22], solid-state reaction [23,24], and solgel [25] methods. The co-precipitation method makes the materials react uniformly at the molecular level and offers the advantages of lower polycrystallinesynthesized temperatures and shorter sintering times.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Li_1.5Al_0.5Ge_1.5(PO₄)₃ solid electrolytes via the co-precipitation method

Kotobuki

Koishi

2019

Journal of Asian Ceramic Societies

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Li 1.5 Al 0.5 Ge 1.5 (PO 4) 3 (LAGP) is prepared through co-precipitation and sintered at various temperatures (650~900°C). Impurity formation is affected by the sintering temperature. Although impurity formation is observed in all the samples, it becomes more prominent at high sintering temperatures. The crystallinity of LAGP increased with the sintering temperature as evidenced by SEM observations, which show that the edges of the grains become sharper with increases in the sintering temperature. However, the formation of pores is also observed in the pellets sintered at 850°C and 900°C. As a result, the highest Li ion conductivity (7.8 × 10 −5 S cm −1) is obtained when the sintering temperature is 800°C due to the high crystallinity of LAGP and absence of pore formation. This conductivity value is comparable to previously reported values and LAGP synthesis temperature is 400°C lower than required by the melt-quenching method. The co-precipitation method is a promising method for the preparation of LAGP solid electrolytes at low temperatures.

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Section: Introductionmentioning

confidence: 99%

Preparation of Li_1.5Al_0.5Ge_1.5(PO₄)₃ solid electrolytes via the co-precipitation method

Kotobuki

Koishi

2019

Journal of Asian Ceramic Societies

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“…The ionic transference number of Pellet-Li 3 PO 4 sintered at 1050°C was examined using Au/LATP/Au cell by the DC polarization technique [16]. The polarization curve is shown in Figure 9.…”

Section: Resultsmentioning

confidence: 99%

Effect of Li salts on the properties of Li_1.5Al_0.5Ti_1.5(PO₄)₃ solid electrolytes prepared by the co-precipitation method

Kotobuki

Koishi

2019

Journal of Asian Ceramic Societies

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In this study, Li 1.5 Al 0.5 Ti 1.5 (PO 4) 3 (LATP) solid electrolyte is prepared through co-precipitation using Li 3 PO 4 and Li 2 C 2 O 4 salts. The co-precipitates are heated at 800°C to obtain precursor powders. The precursor powders are then ball-milled to reduce the particle size to prepare dense LATP pellets. Li salts significantly influence the morphology and crystallinity of the precursor powders. The precursor powder prepared from Li 3 PO 4 possesses a smaller particle size and lower crystallinity of LATP compared with Li 2 C 2 O 4. The soft, low-crystallinity powder from Li 3 PO 4 is easily crushed by the ball-milling. The average particle size is reduced to 30 nm, while the average size of particles from Li 2 C 2 O 4 is 120 nm after the ball-milling. The small particle size promotes sintering of LATP pellets. As a result, LATP pellets prepared from Li 3 PO 4 show higher Li ion conductivity than those from Li 2 C 2 O 4 due to their high sinterability and large grain size (low grain-boundary resistance). The Li ion conductivity is 2.0 × 10 −4 S cm −1 after sintering at 1050°C for 6 h. It is concluded that the Li source used to form the coprecipitate greatly influences the properties of sintered LATP pellet. The Li source is one key to obtain LATP with high Li ion conductivity.

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“…Hot pressing can lead to dense mesoscopic/microscopic interfaces between electrode and electrolyte layers inside the composite cathode/electrolyte layer. [115][116][117] The hot pressing plays different roles throughout the PSSB preparation process. (1) After the electrolytes and the cathode materials are mixed and coated on aluminum foil, hot pressing is performed to improve the physical contact between the cathode material particles and the electrolyte, thereby increasing the ionic conductivity.…”

Section: Fundamental Challenges For the Cathode-cpe Interfacementioning

confidence: 99%

Research progress in stable interfacial constructions between composite polymer electrolytes and electrodes

Pan

Zhao

Wang

et al. 2022

Energy Environ. Sci.

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Preparation of thin solid electrolyte by hot-pressing and diamond wire slicing

Abstract: The thickness of a solid electrolyte influences the performance of all-solid-state batteries due to increased impedance with a thick electrolyte.

Cited by 26 publications

References 30 publications

Preparation of Li_1.5Al_0.5Ge_1.5(PO₄)₃ solid electrolytes via the co-precipitation method

Preparation of Li_1.5Al_0.5Ge_1.5(PO₄)₃ solid electrolytes via the co-precipitation method

Effect of Li salts on the properties of Li_1.5Al_0.5Ti_1.5(PO₄)₃ solid electrolytes prepared by the co-precipitation method

Research progress in stable interfacial constructions between composite polymer electrolytes and electrodes

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Preparation of thin solid electrolyte by hot-pressing and diamond wire slicing

Abstract: The thickness of a solid electrolyte influences the performance of all-solid-state batteries due to increased impedance with a thick electrolyte.

Cited by 26 publications

References 30 publications

Preparation of Li1.5Al0.5Ge1.5(PO4)3 solid electrolytes via the co-precipitation method

Preparation of Li1.5Al0.5Ge1.5(PO4)3 solid electrolytes via the co-precipitation method

Effect of Li salts on the properties of Li1.5Al0.5Ti1.5(PO4)3 solid electrolytes prepared by the co-precipitation method

Research progress in stable interfacial constructions between composite polymer electrolytes and electrodes

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Preparation of Li_1.5Al_0.5Ge_1.5(PO₄)₃ solid electrolytes via the co-precipitation method

Preparation of Li_1.5Al_0.5Ge_1.5(PO₄)₃ solid electrolytes via the co-precipitation method

Effect of Li salts on the properties of Li_1.5Al_0.5Ti_1.5(PO₄)₃ solid electrolytes prepared by the co-precipitation method