Single-crystal nickel (Ni)-rich cathode materials (Li[Ni[Formula: see text]Co[Formula: see text]Mn[Formula: see text]]O 2 , (NCMs)) of lithium ion batteries (LIBs) have displayed promising application potential due to the merits of stable structure, minor side reaction, and high energy density. The Ni[Formula: see text]Co[Formula: see text]Mn[Formula: see text](OH) 2 as the precursor of single-crystal NCM faces the issues of tedious preparation process and serious pollutant emission for traditional preparation methods during the industrial preparation. Herein, an improved continuous two-step spray pyrolysis strategy is adopted to prepare the precursor of single-crystal NCM. Combining with the industrial devices, ton-scale preparation of single-crystal NCM is realized after dynamic lithiation post-treatment. This improved strategy not only shortens the preparation process, but also reduces metal segregation and sintering temperature, effectively balancing the cost control and production efficiency. The samples sintering at 850[Formula: see text]C show uniform morphology with a diameter of 4.5 [Formula: see text] m and delivers an initial discharge capacity of 169 mAh/g at 0.1 C after 100 cycles. This work provides a new route for the industrial preparation single-crystal NCM cathode materials of LIBs.
{"title":"Ton-scale preparation of single-crystal Ni-rich ternary cathode materials for high-performance lithium ion batteries","authors":"Yongfu Cui, Jianzong Man, Leichao Meng, Wenjun Wang, Xueping Fan, Jing Yuan, Jianhong Peng","doi":"10.1142/s1793604723400350","DOIUrl":"https://doi.org/10.1142/s1793604723400350","url":null,"abstract":"Single-crystal nickel (Ni)-rich cathode materials (Li[Ni[Formula: see text]Co[Formula: see text]Mn[Formula: see text]]O 2 , (NCMs)) of lithium ion batteries (LIBs) have displayed promising application potential due to the merits of stable structure, minor side reaction, and high energy density. The Ni[Formula: see text]Co[Formula: see text]Mn[Formula: see text](OH) 2 as the precursor of single-crystal NCM faces the issues of tedious preparation process and serious pollutant emission for traditional preparation methods during the industrial preparation. Herein, an improved continuous two-step spray pyrolysis strategy is adopted to prepare the precursor of single-crystal NCM. Combining with the industrial devices, ton-scale preparation of single-crystal NCM is realized after dynamic lithiation post-treatment. This improved strategy not only shortens the preparation process, but also reduces metal segregation and sintering temperature, effectively balancing the cost control and production efficiency. The samples sintering at 850[Formula: see text]C show uniform morphology with a diameter of 4.5 [Formula: see text] m and delivers an initial discharge capacity of 169 mAh/g at 0.1 C after 100 cycles. This work provides a new route for the industrial preparation single-crystal NCM cathode materials of LIBs.","PeriodicalId":12701,"journal":{"name":"Functional Materials Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135728104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-03DOI: 10.1142/s1793604723400386
Ki Tong Hun, Kim Hyon Chol, Jo Hye Gang
{"title":"Investigation on the influence of Zn content on the structural, optical, morphological and electrical properties of ternary compound Cd<sub>1-x</sub>Zn<sub>x</sub>S window layer for CdTe solar cell","authors":"Ki Tong Hun, Kim Hyon Chol, Jo Hye Gang","doi":"10.1142/s1793604723400386","DOIUrl":"https://doi.org/10.1142/s1793604723400386","url":null,"abstract":"","PeriodicalId":12701,"journal":{"name":"Functional Materials Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135869167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-01DOI: 10.1142/s1793604723400374
Chaoqian Qin, Jinghong Du, JiaXing Chen, JiaRui Yang, ShengYang He
{"title":"Preparation of Mo<sup>6+</sup>, Gd<sup>3+</sup> doped TiO<sub>2</sub> nanotube arrays and study of their organization and photocatalytic properties","authors":"Chaoqian Qin, Jinghong Du, JiaXing Chen, JiaRui Yang, ShengYang He","doi":"10.1142/s1793604723400374","DOIUrl":"https://doi.org/10.1142/s1793604723400374","url":null,"abstract":"","PeriodicalId":12701,"journal":{"name":"Functional Materials Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135162253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-31DOI: 10.1142/s1793604723400337
Qichen Liang, Nana Du, Huajie Xu
The development of cheap, high activity and stability catalysts for oxygen evolution reaction (OER) is of great significance because of its important role in energy storage technology. Herein, flower-like CoSe 2 -Co 3 O 4 -Ag with enhanced electrochemical performance was synthesized by simple methods. The CoSe 2 -Co 3 O 4 -Ag exhibits lower overpotential and higher current density, with an overpotential of 324 mV at the current density of 10 mA⋅cm[Formula: see text] and a Tafel slope of 65.69 mA⋅dec[Formula: see text]. From the ECSA normalized LSV curves, higher electrocatalytic activity for OER is mainly due to the increase of ESCA and conductivity, minor due to adjusting the electronic configuration. These strategies to improve electrochemical active area and conductivity have valuable reference for designing cheap, high activity and stability catalysts.
{"title":"An Efficient CoSe<sub>2</sub>-Co<sub>3</sub>O<sub>4</sub>-Ag Hybrid Catalyst for Electrocatalytic Oxygen Evolution","authors":"Qichen Liang, Nana Du, Huajie Xu","doi":"10.1142/s1793604723400337","DOIUrl":"https://doi.org/10.1142/s1793604723400337","url":null,"abstract":"The development of cheap, high activity and stability catalysts for oxygen evolution reaction (OER) is of great significance because of its important role in energy storage technology. Herein, flower-like CoSe 2 -Co 3 O 4 -Ag with enhanced electrochemical performance was synthesized by simple methods. The CoSe 2 -Co 3 O 4 -Ag exhibits lower overpotential and higher current density, with an overpotential of 324 mV at the current density of 10 mA⋅cm[Formula: see text] and a Tafel slope of 65.69 mA⋅dec[Formula: see text]. From the ECSA normalized LSV curves, higher electrocatalytic activity for OER is mainly due to the increase of ESCA and conductivity, minor due to adjusting the electronic configuration. These strategies to improve electrochemical active area and conductivity have valuable reference for designing cheap, high activity and stability catalysts.","PeriodicalId":12701,"journal":{"name":"Functional Materials Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135764669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
SiO 2 is commonly used as an abrasive in optical devices and magnetorheological (MR) fluid. In this study, MR fluid with composite and free-state SiO 2 were prepared. Composite magnetic particles of CIP@SiO 2 were synthesized using the sol-gel method with tetraethyl orthosilicate (TEOS) as the silicon source. Performance test results showed that CIP@SiO 2 MR fluid exhibited superior mechanical properties compared with CIP MR fluid under zero magnetic field conditions. However, under the influence of a magnetic field, the SiO 2 shell weakened the response of CIP@SiO 2 MR fluid to the magnetic field, whereas CIP MR fluid demonstrated better rheological properties. The addition of free-state SiO 2 to CIP MR fluid significantly improved its rheological performance. At a volume fraction of 6% SiO 2 , the shear stress and viscosity reached their maximum values, and further increasing the volume fraction to 8% resulted in a noticeable decrease in rheological behavior. Stability improved with an increase in magnetizable particle content. The stability of CIP MR fluid at the same concentration was superior to that of CIP@SiO 2 MR fluid, while free-state SiO 2 had a notable enhancing effect on stability. Therefore, when SiO 2 exists as a free-state abrasive, the rheological properties and stability of the MR fluid considerable improve.
{"title":"Effect of Silica Morphology on Rheological Properties and Stability of Magnetorheological Fluid","authors":"Bingsan Chen, Minghan Yang, Chenglong Fan, Xiaoyu Yan, Yongchao Xu, Chunyu Li","doi":"10.1142/s1793604723400301","DOIUrl":"https://doi.org/10.1142/s1793604723400301","url":null,"abstract":"SiO 2 is commonly used as an abrasive in optical devices and magnetorheological (MR) fluid. In this study, MR fluid with composite and free-state SiO 2 were prepared. Composite magnetic particles of CIP@SiO 2 were synthesized using the sol-gel method with tetraethyl orthosilicate (TEOS) as the silicon source. Performance test results showed that CIP@SiO 2 MR fluid exhibited superior mechanical properties compared with CIP MR fluid under zero magnetic field conditions. However, under the influence of a magnetic field, the SiO 2 shell weakened the response of CIP@SiO 2 MR fluid to the magnetic field, whereas CIP MR fluid demonstrated better rheological properties. The addition of free-state SiO 2 to CIP MR fluid significantly improved its rheological performance. At a volume fraction of 6% SiO 2 , the shear stress and viscosity reached their maximum values, and further increasing the volume fraction to 8% resulted in a noticeable decrease in rheological behavior. Stability improved with an increase in magnetizable particle content. The stability of CIP MR fluid at the same concentration was superior to that of CIP@SiO 2 MR fluid, while free-state SiO 2 had a notable enhancing effect on stability. Therefore, when SiO 2 exists as a free-state abrasive, the rheological properties and stability of the MR fluid considerable improve.","PeriodicalId":12701,"journal":{"name":"Functional Materials Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136233165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-23DOI: 10.1142/s1793604723500236
Dong-Run Hu, Naoyoshi Nunotani, Nobuhito Imanaka
This study focuses on the development and characterization of precious-metal-free Co 3 O 4 /ZrSn[Formula: see text]Fe[Formula: see text]O[Formula: see text] catalysts for the purpose of direct N 2 O decomposition. The oxygen supply from ZrSn[Formula: see text]Fe[Formula: see text]O[Formula: see text] facilitated N 2 O decomposition. Among the prepared catalysts, the 19 wt.% Co 3 O 4 /ZrSn[Formula: see text]Fe[Formula: see text]O[Formula: see text] catalyst exhibited the highest catalytic activity. Furthermore, N 2 O was completely decomposed at a relatively low temperature of 500[Formula: see text]C.
{"title":"Direct Decomposition of N<sub>2</sub>O over Co<sub>3</sub>O<sub>4</sub>/ZrSn<sub>1-<i>x</i></sub>Fe<sub><i>x</i></sub>O<sub>4-δ</sub> Catalysts","authors":"Dong-Run Hu, Naoyoshi Nunotani, Nobuhito Imanaka","doi":"10.1142/s1793604723500236","DOIUrl":"https://doi.org/10.1142/s1793604723500236","url":null,"abstract":"This study focuses on the development and characterization of precious-metal-free Co 3 O 4 /ZrSn[Formula: see text]Fe[Formula: see text]O[Formula: see text] catalysts for the purpose of direct N 2 O decomposition. The oxygen supply from ZrSn[Formula: see text]Fe[Formula: see text]O[Formula: see text] facilitated N 2 O decomposition. Among the prepared catalysts, the 19 wt.% Co 3 O 4 /ZrSn[Formula: see text]Fe[Formula: see text]O[Formula: see text] catalyst exhibited the highest catalytic activity. Furthermore, N 2 O was completely decomposed at a relatively low temperature of 500[Formula: see text]C.","PeriodicalId":12701,"journal":{"name":"Functional Materials Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135365729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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