{"title":"LDH-Blended ZrO2/Polysulfone Composite Membrane for Alkaline Water Electrolysis","authors":"Zhendong Meng, Zhikun Liu, Peng Kang","doi":"10.1021/acssuschemeng.5c00182","DOIUrl":"https://doi.org/10.1021/acssuschemeng.5c00182","url":null,"abstract":"Alkaline water electrolysis (AWE) is a promising and mature technology for green hydrogen production, with the membrane playing a key role in facilitating hydroxide ion conduction and preventing gas crossover. In this study, we present a Z<i><sub>x</sub></i>LDH<i><sub>x</sub></i>/PSU composite membrane that exhibits high hydrophilicity, ultralow area resistance (0.18 Ω·cm<sup>2</sup>), ultrahigh porosity (86%), and excellent water absorption capacity (107.3%). The CoFe LDH incorporated into the mixed membrane plays a dual role: (1) optimizing the microporous structure; (2) enabling hydroxide conduction. Using the Z<sub>77</sub>LDH<sub>8</sub>/PSU, electrolytic cells equipped with Ni foam/Ni foam or NiMo foam/NiFe foam electrodes achieve current densities of 590 mA·cm<sup>–2</sup> and 1040 mA·cm<sup>–2</sup> at 2 V, respectively. The membrane also demonstrates high stability, maintaining performance for over 150 h at a current density of 1000 mA·cm<sup>–2</sup>.","PeriodicalId":25,"journal":{"name":"ACS Sustainable Chemistry & Engineering","volume":"57 1","pages":""},"PeriodicalIF":8.4,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144114440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xiaoyu Zhu, Mingda Che, Renliang Huang, Mei Cui, Wei Qi, Rongxin Su
{"title":"Ultrastrong, Fire-Resistant, and Sustainable Phosphorylated Cellulose Microfibers Hot-Pressing Structural Material","authors":"Xiaoyu Zhu, Mingda Che, Renliang Huang, Mei Cui, Wei Qi, Rongxin Su","doi":"10.1021/acssuschemeng.5c01142","DOIUrl":"https://doi.org/10.1021/acssuschemeng.5c01142","url":null,"abstract":"The widespread use of petrochemical-based plastics has led to significant environmental concerns. Cellulose fiber structural materials were widely used in automotive manufacturing and construction industries and have emerged as a potential solution to this issue. However, interfacial bonding issues between cellulose fibers hinder further material development. In particular, cellulose microfibers exhibit even more challenging interfacial bonding, greatly limiting the enhancement of the mechanical properties. Herein, a bottom-up approach was used to prepare phosphorylated cellulose microfibers hydrogels strengthened by externally induced Ca<sup>2+</sup> cross-linking. Phosphorylated cellulose microfiber hot-pressed structural materials (PMHM) were then fabricated under the combined influence of temperature and pressure. The results indicate that the strength of PMHM is 273 MPa and that its modulus is 16 GPa. Its mechanical properties are significantly higher than those of commercially available petrochemical-based plastics and are comparable to those of nanocellulose-assembled materials. Additionally, the limiting oxygen index of PMHM is 41.13%, which classifies it as a flame-retardant material. Its coefficient of thermal expansion is 7 × 10<sup>–6</sup> K<sup>–1</sup>, and it remains stable at temperatures up to 200 °C. Notably, PMHM undergoes significant degradation when exposed to the natural environment for 70 days and can be molded into materials for various industrial parts. Given its excellent mechanical properties, flame retardancy, degradability, and processability, PMHM has considerable application potential in fields such as automotive manufacturing and construction.","PeriodicalId":25,"journal":{"name":"ACS Sustainable Chemistry & Engineering","volume":"135 1","pages":""},"PeriodicalIF":8.4,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144114459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"LDH-Blended ZrO2/Polysulfone Composite Membrane for Alkaline Water Electrolysis","authors":"Zhendong Meng, Zhikun Liu and Peng Kang*, ","doi":"10.1021/acssuschemeng.5c0018210.1021/acssuschemeng.5c00182","DOIUrl":"https://doi.org/10.1021/acssuschemeng.5c00182https://doi.org/10.1021/acssuschemeng.5c00182","url":null,"abstract":"<p >Alkaline water electrolysis (AWE) is a promising and mature technology for green hydrogen production, with the membrane playing a key role in facilitating hydroxide ion conduction and preventing gas crossover. In this study, we present a Z<i><sub>x</sub></i>LDH<i><sub>x</sub></i>/PSU composite membrane that exhibits high hydrophilicity, ultralow area resistance (0.18 Ω·cm<sup>2</sup>), ultrahigh porosity (86%), and excellent water absorption capacity (107.3%). The CoFe LDH incorporated into the mixed membrane plays a dual role: (1) optimizing the microporous structure; (2) enabling hydroxide conduction. Using the Z<sub>77</sub>LDH<sub>8</sub>/PSU, electrolytic cells equipped with Ni foam/Ni foam or NiMo foam/NiFe foam electrodes achieve current densities of 590 mA·cm<sup>–2</sup> and 1040 mA·cm<sup>–2</sup> at 2 V, respectively. The membrane also demonstrates high stability, maintaining performance for over 150 h at a current density of 1000 mA·cm<sup>–2</sup>.</p>","PeriodicalId":25,"journal":{"name":"ACS Sustainable Chemistry & Engineering","volume":"13 21","pages":"7717–7727 7717–7727"},"PeriodicalIF":7.1,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144189088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fubin Luo*, JunYan Sun, Xueyan Yang, Ziyi Huang, Chunrui Zhai, Bili Lin and Hongzhou Li,
{"title":"High Elasticity and Stability of Thermally Conductive Composites Offered by Disulfide Exchange-Based Silicone Elastomers","authors":"Fubin Luo*, JunYan Sun, Xueyan Yang, Ziyi Huang, Chunrui Zhai, Bili Lin and Hongzhou Li, ","doi":"10.1021/acssuschemeng.5c0196910.1021/acssuschemeng.5c01969","DOIUrl":"https://doi.org/10.1021/acssuschemeng.5c01969https://doi.org/10.1021/acssuschemeng.5c01969","url":null,"abstract":"<p >Due to its excellent flexibility, silicone-based materials are widely used in the thermal management of modern electronic devices, but they still face risks of cracking and silicone contamination. In this work, a silicone elastomer (EPHMS) is achieved through the cross-linking between a synthesized epoxy-terminated PDMS and 4-aminophenyl disulfide (APD). The synthesized EPHMS demonstrates exceptional elasticity and thermal stability, showing a 98% recovery efficiency and no detectable silicone migration under sustained compressive strain. Additionally, it possesses an initial thermal degradation temperature of 285 °C. The disulfide exchange endows EPHMS with self-healing and reprocessing capabilities. Boron nitride (BN) fillers were further incorporated into the matrix to enhance the thermal conductivity of EPHMS. The composite achieves a thermal conductivity of 2.70 W m<sup>–1</sup> K<sup>–1</sup> when the mass fraction of BN is 40%, and it retains as high as a 97% recovery rate in compression tests. As indicated, the composite also exhibits self-repairing and reprocessing abilities. This work points to a new path for developing elastic and stable thermally conductive materials.</p>","PeriodicalId":25,"journal":{"name":"ACS Sustainable Chemistry & Engineering","volume":"13 21","pages":"8013–8023 8013–8023"},"PeriodicalIF":7.1,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144189151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xiaoyu Zhu, Mingda Che*, Renliang Huang*, Mei Cui, Wei Qi and Rongxin Su*,
{"title":"Ultrastrong, Fire-Resistant, and Sustainable Phosphorylated Cellulose Microfibers Hot-Pressing Structural Material","authors":"Xiaoyu Zhu, Mingda Che*, Renliang Huang*, Mei Cui, Wei Qi and Rongxin Su*, ","doi":"10.1021/acssuschemeng.5c0114210.1021/acssuschemeng.5c01142","DOIUrl":"https://doi.org/10.1021/acssuschemeng.5c01142https://doi.org/10.1021/acssuschemeng.5c01142","url":null,"abstract":"<p >The widespread use of petrochemical-based plastics has led to significant environmental concerns. Cellulose fiber structural materials were widely used in automotive manufacturing and construction industries and have emerged as a potential solution to this issue. However, interfacial bonding issues between cellulose fibers hinder further material development. In particular, cellulose microfibers exhibit even more challenging interfacial bonding, greatly limiting the enhancement of the mechanical properties. Herein, a bottom-up approach was used to prepare phosphorylated cellulose microfibers hydrogels strengthened by externally induced Ca<sup>2+</sup> cross-linking. Phosphorylated cellulose microfiber hot-pressed structural materials (PMHM) were then fabricated under the combined influence of temperature and pressure. The results indicate that the strength of PMHM is 273 MPa and that its modulus is 16 GPa. Its mechanical properties are significantly higher than those of commercially available petrochemical-based plastics and are comparable to those of nanocellulose-assembled materials. Additionally, the limiting oxygen index of PMHM is 41.13%, which classifies it as a flame-retardant material. Its coefficient of thermal expansion is 7 × 10<sup>–6</sup> K<sup>–1</sup>, and it remains stable at temperatures up to 200 °C. Notably, PMHM undergoes significant degradation when exposed to the natural environment for 70 days and can be molded into materials for various industrial parts. Given its excellent mechanical properties, flame retardancy, degradability, and processability, PMHM has considerable application potential in fields such as automotive manufacturing and construction.</p>","PeriodicalId":25,"journal":{"name":"ACS Sustainable Chemistry & Engineering","volume":"13 21","pages":"7877–7889 7877–7889"},"PeriodicalIF":7.1,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144189163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Safe Preparation of Ultrafine White Gibbsite from Secondary Aluminum Dross through the Efficient Removal of Harmful Elements","authors":"Musonda Mayani, Guihua Liu, Tiangui Qi, Shuqing Song, Qiusheng Zhou, Leiting Shen, Yilin Wang, Xiaobin Li, JiaPing Zhao, Zhiqiang Shi","doi":"10.1021/acssuschemeng.5c01074","DOIUrl":"https://doi.org/10.1021/acssuschemeng.5c01074","url":null,"abstract":"Safe, comprehensive utilization of hazardous secondary aluminum dross (SAD) remarkably contributes to the green aluminum industry. A novel approach to preparing the ultrafine white gibbsite was provided after economic transformation of the reactive aluminum-bearing substances and efficient removal of salts. The simultaneous roasting process for the transformation of AlN with sodium-bearing additives was adopted through the utilization of the waste heat in the recovery of aluminum from the primary aluminum dross. Increasing roasting temperature, prolonging duration, and adding additives all notably raised the conversion efficiency of AlN. The oxidant Na<sub>2</sub>O<sub>2</sub> and mineralizer NaF contributed to a 96.95% conversion efficiency of AlN at 750 °C owing to the formation of α-Al<sub>2</sub>O<sub>3</sub>, NaAlO<sub>2</sub>, and Na<sub>2</sub>SiO<sub>3</sub>. Meanwhile, the roasting process also promoted the removal of fluorides. Compared to the 58.6% removal efficiency of fluorine from the roasted SAD without additives, 100 g/L Na<sub>2</sub>O in solution contributed to a 92.52% removal efficiency of fluorine. Without β-2CaO·SiO<sub>2</sub>, the sodium aluminate clinker was produced from a Cl-free SAD residue with minor F at 950 °C for 1 h. Extraction efficiencies of Al<sub>2</sub>O<sub>3</sub> and Na<sub>2</sub>O from the sodium aluminate clinker at 5 min reached 96.88% and 98.56%, respectively. Less than 8% residue was composed of MgO, CaTiO<sub>3</sub>, and CaCO<sub>3</sub> with less than 0.045% F. 48.19% precipitation efficiency was achieved at the initial temperature of 75 °C for 48 h from the purified sodium aluminate solution. No organics, low content of Fe<sub>2</sub>O<sub>3</sub>, and good growth from the solution with less than 75 g/L Na<sub>2</sub>O at high temperature all contributed to the high quality of the ultrafine plate-like gibbsites with low content of impurities, 99.02 luminance, and 95.81 CIE whiteness.","PeriodicalId":25,"journal":{"name":"ACS Sustainable Chemistry & Engineering","volume":"45 1","pages":""},"PeriodicalIF":8.4,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144104061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Safe Preparation of Ultrafine White Gibbsite from Secondary Aluminum Dross through the Efficient Removal of Harmful Elements","authors":"Musonda Mayani, Guihua Liu*, Tiangui Qi, Shuqing Song, Qiusheng Zhou, Leiting Shen, Yilin Wang, Xiaobin Li, JiaPing Zhao and Zhiqiang Shi, ","doi":"10.1021/acssuschemeng.5c0107410.1021/acssuschemeng.5c01074","DOIUrl":"https://doi.org/10.1021/acssuschemeng.5c01074https://doi.org/10.1021/acssuschemeng.5c01074","url":null,"abstract":"<p >Safe, comprehensive utilization of hazardous secondary aluminum dross (SAD) remarkably contributes to the green aluminum industry. A novel approach to preparing the ultrafine white gibbsite was provided after economic transformation of the reactive aluminum-bearing substances and efficient removal of salts. The simultaneous roasting process for the transformation of AlN with sodium-bearing additives was adopted through the utilization of the waste heat in the recovery of aluminum from the primary aluminum dross. Increasing roasting temperature, prolonging duration, and adding additives all notably raised the conversion efficiency of AlN. The oxidant Na<sub>2</sub>O<sub>2</sub> and mineralizer NaF contributed to a 96.95% conversion efficiency of AlN at 750 °C owing to the formation of α-Al<sub>2</sub>O<sub>3</sub>, NaAlO<sub>2</sub>, and Na<sub>2</sub>SiO<sub>3</sub>. Meanwhile, the roasting process also promoted the removal of fluorides. Compared to the 58.6% removal efficiency of fluorine from the roasted SAD without additives, 100 g/L Na<sub>2</sub>O in solution contributed to a 92.52% removal efficiency of fluorine. Without β-2CaO·SiO<sub>2</sub>, the sodium aluminate clinker was produced from a Cl-free SAD residue with minor F at 950 °C for 1 h. Extraction efficiencies of Al<sub>2</sub>O<sub>3</sub> and Na<sub>2</sub>O from the sodium aluminate clinker at 5 min reached 96.88% and 98.56%, respectively. Less than 8% residue was composed of MgO, CaTiO<sub>3</sub>, and CaCO<sub>3</sub> with less than 0.045% F. 48.19% precipitation efficiency was achieved at the initial temperature of 75 °C for 48 h from the purified sodium aluminate solution. No organics, low content of Fe<sub>2</sub>O<sub>3</sub>, and good growth from the solution with less than 75 g/L Na<sub>2</sub>O at high temperature all contributed to the high quality of the ultrafine plate-like gibbsites with low content of impurities, 99.02 luminance, and 95.81 CIE whiteness.</p>","PeriodicalId":25,"journal":{"name":"ACS Sustainable Chemistry & Engineering","volume":"13 21","pages":"7865–7876 7865–7876"},"PeriodicalIF":7.1,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144189082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Songqi Leng, Taizong Shen, Shuting Li, Haoyu Wang, Shahzad Barghi, Dan Wu, Chunbao Charles Xu
{"title":"Aqueous-Phase Reforming of Methanol for Hydrogen Production on Nitrogen-Doped Ceria: The Effect of the Doping Method","authors":"Songqi Leng, Taizong Shen, Shuting Li, Haoyu Wang, Shahzad Barghi, Dan Wu, Chunbao Charles Xu","doi":"10.1021/acssuschemeng.5c02140","DOIUrl":"https://doi.org/10.1021/acssuschemeng.5c02140","url":null,"abstract":"This study first compares the effects of three nitrogen doping methods, namely, solvothermal, hydrothermal, and coheat treatments, on the catalytic performance of Pt/CeO<sub>2</sub> catalysts for aqueous-phase reforming (APR) of methanol to produce hydrogen. Characterization techniques (X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), H<sub>2</sub> temperature-programmed reduction (H<sub>2</sub>-TPR), temperature-programmed desorption of O<sub>2</sub> (O<sub>2</sub>-TPD), and Fourier transform infrared spectroscopy (FT-IR)) were used to analyze the impact of the N-dopant type and content on oxygen vacancy formation, Ce<sup>3+</sup> ratio, crystal structure, and active sites. Compared to the undoped sample, N-doping significantly enhanced the catalytic performance, increasing the turnover frequency (TOF) from 773 to 1290/h at 200 °C with 0.5 wt % Pt and a methanol-to-water molar ratio of 1:1. Hydrothermal treatment generated more oxygen vacancies due to Ce–N–O bond formation, while coheat treatment produced both Ce–N–O and Ce–N bonds. Triethanolamine (TEA) proved effective for hydrothermal N-doping, promoting oxygen vacancies via ethanol derivative formation. In contrast, solvothermal treatment was less effective due to inadequate N-doping and disruption of the CeO<sub>2</sub> nanorods. This study highlights the importance of selecting suitable N-doping strategies to improve the activity and stability of Pt/CeO<sub>2</sub> catalysts for hydrogen production.","PeriodicalId":25,"journal":{"name":"ACS Sustainable Chemistry & Engineering","volume":"19 1","pages":""},"PeriodicalIF":8.4,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144104379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Songqi Leng, Taizong Shen, Shuting Li, Haoyu Wang, Shahzad Barghi*, Dan Wu and Chunbao Charles Xu*,
{"title":"Aqueous-Phase Reforming of Methanol for Hydrogen Production on Nitrogen-Doped Ceria: The Effect of the Doping Method","authors":"Songqi Leng, Taizong Shen, Shuting Li, Haoyu Wang, Shahzad Barghi*, Dan Wu and Chunbao Charles Xu*, ","doi":"10.1021/acssuschemeng.5c0214010.1021/acssuschemeng.5c02140","DOIUrl":"https://doi.org/10.1021/acssuschemeng.5c02140https://doi.org/10.1021/acssuschemeng.5c02140","url":null,"abstract":"<p >This study first compares the effects of three nitrogen doping methods, namely, solvothermal, hydrothermal, and coheat treatments, on the catalytic performance of Pt/CeO<sub>2</sub> catalysts for aqueous-phase reforming (APR) of methanol to produce hydrogen. Characterization techniques (X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), H<sub>2</sub> temperature-programmed reduction (H<sub>2</sub>-TPR), temperature-programmed desorption of O<sub>2</sub> (O<sub>2</sub>-TPD), and Fourier transform infrared spectroscopy (FT-IR)) were used to analyze the impact of the N-dopant type and content on oxygen vacancy formation, Ce<sup>3+</sup> ratio, crystal structure, and active sites. Compared to the undoped sample, N-doping significantly enhanced the catalytic performance, increasing the turnover frequency (TOF) from 773 to 1290/h at 200 °C with 0.5 wt % Pt and a methanol-to-water molar ratio of 1:1. Hydrothermal treatment generated more oxygen vacancies due to Ce–N–O bond formation, while coheat treatment produced both Ce–N–O and Ce–N bonds. Triethanolamine (TEA) proved effective for hydrothermal N-doping, promoting oxygen vacancies via ethanol derivative formation. In contrast, solvothermal treatment was less effective due to inadequate N-doping and disruption of the CeO<sub>2</sub> nanorods. This study highlights the importance of selecting suitable N-doping strategies to improve the activity and stability of Pt/CeO<sub>2</sub> catalysts for hydrogen production.</p>","PeriodicalId":25,"journal":{"name":"ACS Sustainable Chemistry & Engineering","volume":"13 21","pages":"8078–8092 8078–8092"},"PeriodicalIF":7.1,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144189162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fubin Luo, JunYan Sun, Xueyan Yang, Ziyi Huang, Chunrui Zhai, Bili Lin, Hongzhou Li
{"title":"High Elasticity and Stability of Thermally Conductive Composites Offered by Disulfide Exchange-Based Silicone Elastomers","authors":"Fubin Luo, JunYan Sun, Xueyan Yang, Ziyi Huang, Chunrui Zhai, Bili Lin, Hongzhou Li","doi":"10.1021/acssuschemeng.5c01969","DOIUrl":"https://doi.org/10.1021/acssuschemeng.5c01969","url":null,"abstract":"Due to its excellent flexibility, silicone-based materials are widely used in the thermal management of modern electronic devices, but they still face risks of cracking and silicone contamination. In this work, a silicone elastomer (EPHMS) is achieved through the cross-linking between a synthesized epoxy-terminated PDMS and 4-aminophenyl disulfide (APD). The synthesized EPHMS demonstrates exceptional elasticity and thermal stability, showing a 98% recovery efficiency and no detectable silicone migration under sustained compressive strain. Additionally, it possesses an initial thermal degradation temperature of 285 °C. The disulfide exchange endows EPHMS with self-healing and reprocessing capabilities. Boron nitride (BN) fillers were further incorporated into the matrix to enhance the thermal conductivity of EPHMS. The composite achieves a thermal conductivity of 2.70 W m<sup>–1</sup> K<sup>–1</sup> when the mass fraction of BN is 40%, and it retains as high as a 97% recovery rate in compression tests. As indicated, the composite also exhibits self-repairing and reprocessing abilities. This work points to a new path for developing elastic and stable thermally conductive materials.","PeriodicalId":25,"journal":{"name":"ACS Sustainable Chemistry & Engineering","volume":"4 1","pages":""},"PeriodicalIF":8.4,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144104062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}