Pub Date : 2024-12-01DOI: 10.1016/j.mattod.2024.10.002
Bixuan Li, Lei Zheng, Yongji Gong, Peng Kang
Two-dimensional (2D) layered materials have attracted considerable research attention due to their unique and tunable properties. Intercalation, the insertion of ions, atoms, or molecules into the interlayer spaces of these materials, facilitates the reversible modulation of both the intercalated species and the host structure without compromising the strong in-plane covalent bonds. This technique significantly enhances the material’s composition, structure, and physical, chemical, and electronic properties, thus creating a highly adaptable system with potential applications in electronics, optics, and catalysis. This review comprehensively details various synthesis methodologies, including conventional electrochemical techniques, liquid-phase, and vapor-phase intercalation, alongside specialized methods such as ion exchange and self-intercalation. We further elucidate the emergent properties resulting from intercalation and highlight recent advancements in their applications within electronics, optoelectronics, magnetoelectronics, and catalysis. Finally, the burgeoning opportunities and formidable challenges associated with the development of intercalated 2D materials are discussed.
{"title":"Intercalation-driven tunability in two-dimensional layered materials: Synthesis, properties, and applications","authors":"Bixuan Li, Lei Zheng, Yongji Gong, Peng Kang","doi":"10.1016/j.mattod.2024.10.002","DOIUrl":"10.1016/j.mattod.2024.10.002","url":null,"abstract":"<div><div>Two-dimensional (2D) layered materials have attracted considerable research attention due to their unique and tunable properties. Intercalation, the insertion of ions, atoms, or molecules into the interlayer spaces of these materials, facilitates the reversible modulation of both the intercalated species and the host structure without compromising the strong in-plane covalent bonds. This technique significantly enhances the material’s composition, structure, and physical, chemical, and electronic properties, thus creating a highly adaptable system with potential applications in electronics, optics, and catalysis. This review comprehensively details various synthesis methodologies, including conventional electrochemical techniques, liquid-phase, and vapor-phase intercalation, alongside specialized methods such as ion exchange and self-intercalation. We further elucidate the emergent properties resulting from intercalation and highlight recent advancements in their applications within electronics, optoelectronics, magnetoelectronics, and catalysis. Finally, the burgeoning opportunities and formidable challenges associated with the development of intercalated 2D materials are discussed.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"81 ","pages":"Pages 118-136"},"PeriodicalIF":21.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 : 2024-12-01DOI: 10.1016/j.mattod.2024.10.009
Qingwei Gao , Zongde Kou , Changshan Zhou , Xiaoming Liu , Jiyao Zhang , Jianhong Gong , Kaikai Song , Lina Hu , Zengqian Liu , Zhefeng Zhang , Jürgen Eckert , Robert O. Ritchie
Designing multiscale heterostructures by taking lessons from Nature provides a promising strategy for achieving excellent strength-ductility synergy in metals and alloys. The achievement of this goal usually requires intricate multi-step thermomechanical processing, but this is still a challenge with casting alloys rather than wrought ones. Here, we developed a Cr30Fe30Ni30Al5Ti5 (at.%) casting multi-principal element alloy (MPEA) which exhibits, in the as-cast condition, a hierarchically heterogeneous structure involving precipitates at multiple length scales. Microscale body-centered-cubic (BCC) grains are dispersed throughout a continuous face-centered-cubic (FCC) structural framework. Coherent L12 nanoparticles form in the FCC matrix, while abundant nanoparticles with hierarchical dimensions (i.e., of η, B2, and η/L21 phases) precipitate inside the BCC grains. The synergistic interactions between dislocations and multiscale precipitates which induce massive dislocation networks and stacking faults result in stable strain-hardening behavior, endowing the alloy with an exceptional combination of strength and ductility without the need for homogenization and complex processing. We believe that this represents a breakthrough that surpasses known casting MPEAs and offers implications for developing new high-performance casting alloys.
{"title":"Exceptional strength-ductility synergy in a casting multi-principal element alloy with a hierarchically heterogeneous structure","authors":"Qingwei Gao , Zongde Kou , Changshan Zhou , Xiaoming Liu , Jiyao Zhang , Jianhong Gong , Kaikai Song , Lina Hu , Zengqian Liu , Zhefeng Zhang , Jürgen Eckert , Robert O. Ritchie","doi":"10.1016/j.mattod.2024.10.009","DOIUrl":"10.1016/j.mattod.2024.10.009","url":null,"abstract":"<div><div>Designing multiscale heterostructures by taking lessons from Nature provides a promising strategy for achieving excellent strength-ductility synergy in metals and alloys. The achievement of this goal usually requires intricate multi-step thermomechanical processing, but this is still a challenge with casting alloys rather than wrought ones. Here, we developed a Cr<sub>30</sub>Fe<sub>30</sub>Ni<sub>30</sub>Al<sub>5</sub>Ti<sub>5</sub> (at.%) casting multi-principal element alloy (MPEA) which exhibits, in the as-cast condition, a hierarchically heterogeneous structure involving precipitates at multiple length scales. Microscale body-centered-cubic (BCC) grains are dispersed throughout a continuous face-centered-cubic (FCC) structural framework. Coherent L1<sub>2</sub> nanoparticles form in the FCC matrix, while abundant nanoparticles with hierarchical dimensions (<em>i.e</em>., of <em>η</em>, B2, and <em>η</em>/L2<sub>1</sub> phases) precipitate inside the BCC grains. The synergistic interactions between dislocations and multiscale precipitates which induce massive dislocation networks and stacking faults result in stable strain-hardening behavior, endowing the alloy with an exceptional combination of strength and ductility without the need for homogenization and complex processing. We believe that this represents a breakthrough that surpasses known casting MPEAs and offers implications for developing new high-performance casting alloys.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"81 ","pages":"Pages 70-83"},"PeriodicalIF":21.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lithium-metal fluoride batteries with higher energy density than commercial lithium-ion batteries are promising candidates for future energy storage. However, challenges such as poor electronic and Li+ conductivity, active material dissolution, and volume expansion during cycling hinder their practical application. Here, a well-designed yolk-shell FeF3@C is aimed to address these issues. The outer carbon shell, derived from an organic carbon source, enhances the electronic conductivity of the embedded FeF3 nanoparticles and protects them from unfavorable dissolution. The hollow design is utilized to provide sufficient space for FeF3 nanoparticles to expand during cycling, preserving the carbon shell to not be destroyed. Post-mortem studies reveal the in-situ formation of Fe/O shell during cycling, which further prevents the loss and shuttle of Fe. Consequently, the FeF3@C nanocomposites deliver a capacity of 400 mAh g−1 at 1.0 C over 1500 cycles with a high capacity retention close to 95 %, and achieve super-rate capability up to 40 C. Moreover, the produced yolk-shell FeF3@C nanocomposites demonstrate air stability, which can simplify the manufacturing process of metal fluoride cathodes. Our study offers a promising direction for designing FeF3 cathodes that achieve both outstanding electrochemical performance and air stability for practical Li-FeF3 batteries.
{"title":"Bottom-up assembly of yolk-shell FeF3@C nanocomposites as high-rate, long-term and air-stable cathodes","authors":"Xuanfeng Chen, Ziang Jiang, Qihou Li, Shunrui Luo, Yujie Wang, Fulu Chu, Chunhao Qin, Feixiang Wu","doi":"10.1016/j.mattod.2024.10.005","DOIUrl":"10.1016/j.mattod.2024.10.005","url":null,"abstract":"<div><div>Lithium-metal fluoride batteries with higher energy density than commercial lithium-ion batteries are promising candidates for future energy storage. However, challenges such as poor electronic and Li<sup>+</sup> conductivity, active material dissolution, and volume expansion during cycling hinder their practical application. Here, a well-designed yolk-shell FeF<sub>3</sub>@C is aimed to address these issues. The outer carbon shell, derived from an organic carbon source, enhances the electronic conductivity of the embedded FeF<sub>3</sub> nanoparticles and protects them from unfavorable dissolution. The hollow design is utilized to provide sufficient space for FeF<sub>3</sub> nanoparticles to expand during cycling, preserving the carbon shell to not be destroyed. Post-mortem studies reveal the in-situ formation of Fe/O shell during cycling, which further prevents the loss and shuttle of Fe. Consequently, the FeF<sub>3</sub>@C nanocomposites deliver a capacity of 400 mAh g<sup>−1</sup> at 1.0 C over 1500 cycles with a high capacity retention close to 95 %, and achieve super-rate capability up to 40 C. Moreover, the produced yolk-shell FeF<sub>3</sub>@C nanocomposites demonstrate air stability, which can simplify the manufacturing process of metal fluoride cathodes. Our study offers a promising direction for designing FeF<sub>3</sub> cathodes that achieve both outstanding electrochemical performance and air stability for practical Li-FeF<sub>3</sub> batteries.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"81 ","pages":"Pages 47-58"},"PeriodicalIF":21.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143164631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 : 2024-12-01DOI: 10.1016/j.mattod.2024.09.020
Hong In Jeong , Hye Sung Jung , Cheong Beom Lee , So Jung Kim , Jeong-Sik Jo , Seongkyu Song , Seo-Jin Ko , Dong-Won Kang , Soon Moon Jeong , Jae-Won Jang , Kyeounghak Kim , Jihoon Lee , Hyosung Choi
Harnessing the potential of mechanoluminescence (ML) for practical applications necessitates innovations that maximize brightness while simplifying the platform. Our study introduces a pioneering interfacial modification technique that enhances the internal triboelectric field in a self-recoverable ML platform based on zinc sulfide@metal oxide phosphor and a polydimethylsiloxane matrix. By chemically functionalizing the surface of metal oxide shells with benzoic acid derivatives, we modulate surface charge density thereby intensifying the triboelectric field within the ML platform. Utilizing a range of derivatives with varying dipole moments establishes a direct relationship between dipole moment strength and triboelectric enhancement. Notably, introducing aminobenzoic acid (ABA) onto the surface of the aluminum oxide (AlOx) shell results in a significant increase in ML brightness. Our strategy to easily adjust the ML brightness has been applied to anti-counterfeiting applications. Our study not only reveals the correlation between surface triboelectric fields and ML performance but also provides the possibility for practical use of self-recoverable ML platforms in various application fields, including smart textiles, health monitoring systems, and wearable displays.
{"title":"Interfacial dipole moment engineering in self-recoverable mechanoluminescent platform","authors":"Hong In Jeong , Hye Sung Jung , Cheong Beom Lee , So Jung Kim , Jeong-Sik Jo , Seongkyu Song , Seo-Jin Ko , Dong-Won Kang , Soon Moon Jeong , Jae-Won Jang , Kyeounghak Kim , Jihoon Lee , Hyosung Choi","doi":"10.1016/j.mattod.2024.09.020","DOIUrl":"10.1016/j.mattod.2024.09.020","url":null,"abstract":"<div><div>Harnessing the potential of mechanoluminescence (ML) for practical applications necessitates innovations that maximize brightness while simplifying the platform. Our study introduces a pioneering interfacial modification technique that enhances the internal triboelectric field in a self-recoverable ML platform based on zinc sulfide@metal oxide phosphor and a polydimethylsiloxane matrix. By chemically functionalizing the surface of metal oxide shells with benzoic acid derivatives, we modulate surface charge density thereby intensifying the triboelectric field within the ML platform. Utilizing a range of derivatives with varying dipole moments establishes a direct relationship between dipole moment strength and triboelectric enhancement. Notably, introducing aminobenzoic acid (ABA) onto the surface of the aluminum oxide (AlO<sub>x</sub>) shell results in a significant increase in ML brightness. Our strategy to easily adjust the ML brightness has been applied to anti-counterfeiting applications. Our study not only reveals the correlation between surface triboelectric fields and ML performance but also provides the possibility for practical use of self-recoverable ML platforms in various application fields, including smart textiles, health monitoring systems, and wearable displays.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"81 ","pages":"Pages 4-11"},"PeriodicalIF":21.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143164632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 : 2024-12-01DOI: 10.1016/j.mattod.2024.10.001
Yen Hai Thi Tran , Dongguk Kang , Kihun An , Seok Hyun Song , Min-Kyu Choi , Chunjoong Kim , Hyungsub Kim , Seung-Wan Song
Traditional graphite anode material in Li-ion batteries (LIBs) is a primary reason for hampering fast charging LIBs. This is due to its intrinsically sluggish Li+- diffusion kinetics and the growth of Li dendrites under fast charging condition. As a result, electric vehicles (EVs) take significantly longer to charge compared to refueling time gasoline vehicles, and the growth of Li dendrites poses a safety hazard. Reforming traditional graphite to a fast charging one opens up new opportunities for faster performing LIBs. We report for the first time a breakthrough in boosting the Li+- diffusion kinetics of natural graphite via a fine tuning of surface interlayer expansion to sub-angstrom (Å) level (SE-Gr), utilizing an ethanol-based simple, scalable and inexpensive low-temperature method. The critical benefits of SE-Gr anode material are 2-fold higher diffusion coefficients at stage 1L and deeper charging to stage 3 than traditional natural graphite under fast charging condition of 1C (charged in 1 h). As a result, SE-Gr enables nearly theoretical capacity (375 mAh g−1) under 1C, which is 20-fold faster than 0.05C (charged in 20 h) required for traditional natural graphite, and unprecedented outstanding long cycles of half-cell and full-cell with practically loaded 88 % nickel cathode (active mass of 18 mg cm−2) under fast charging conditions of 1 ∼ 5 C (charged in 1 h ∼ 12 min), without Li plating and dendrites. Such performance is impossible to achieve with traditional natural graphite. SE-Gr yields an excellent combination of minute-scale charge speed, high capacity and safety of LIBs, holding promise for next-generation energy storage.
{"title":"Boosting diffusion kinetics of anode material for fast charging Li-ion batteries","authors":"Yen Hai Thi Tran , Dongguk Kang , Kihun An , Seok Hyun Song , Min-Kyu Choi , Chunjoong Kim , Hyungsub Kim , Seung-Wan Song","doi":"10.1016/j.mattod.2024.10.001","DOIUrl":"10.1016/j.mattod.2024.10.001","url":null,"abstract":"<div><div>Traditional graphite anode material in Li-ion batteries (LIBs) is a primary reason for hampering fast charging LIBs. This is due to its intrinsically sluggish Li<sup>+</sup>- diffusion kinetics and the growth of Li dendrites under fast charging condition. As a result, electric vehicles (EVs) take significantly longer to charge compared to refueling time gasoline vehicles, and the growth of Li dendrites poses a safety hazard. Reforming traditional graphite to a fast charging one opens up new opportunities for faster performing LIBs. We report for the first time a breakthrough in boosting the Li<sup>+</sup>- diffusion kinetics of natural graphite <em>via</em> a fine tuning of surface interlayer expansion to sub-angstrom (Å) level (SE-Gr), utilizing an ethanol-based simple, scalable and inexpensive low-temperature method. The critical benefits of SE-Gr anode material are 2-fold higher diffusion coefficients at stage 1L and deeper charging to stage 3 than traditional natural graphite under fast charging condition of 1C (charged in 1 h). As a result, SE-Gr enables nearly theoretical capacity (375 mAh g<sup>−1</sup>) under 1C, which is 20-fold faster than 0.05C (charged in 20 h) required for traditional natural graphite, and unprecedented outstanding long cycles of half-cell and full-cell with practically loaded 88 % nickel cathode (active mass of 18 mg cm<sup>−2</sup>) under fast charging conditions of 1 ∼ 5 C (charged in 1 h ∼ 12 min), without Li plating and dendrites. Such performance is impossible to achieve with traditional natural graphite. SE-Gr yields an excellent combination of minute-scale charge speed, high capacity and safety of LIBs, holding promise for next-generation energy storage.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"81 ","pages":"Pages 12-22"},"PeriodicalIF":21.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143164633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 : 2024-12-01DOI: 10.1016/j.mattod.2024.10.004
Shubo Gao , Weiming Ji , Qi Zhu , Asker Jarlöv , Xiaojun Shen , Xueyu Bai , Chenyang Zhu , Yung Zhen Lek , Zhongmin Xiao , Kun Zhou
One of the most popular medium- and high-entropy alloys is CrCoNi alloy, renowned for its outstanding mechanical properties, particularly at cryogenic temperatures. However, further enhancing the yield strength of CrCoNi at room temperature while maintaining its high ductility remains challenging. In this study, we explore the potential of using a pulsed-wave laser in the powder bed fusion, a dominant metal additive manufacturing (AM) technique, to achieve exceptional room-temperature strength–ductility synergy in CrCoNi alloy. The pulsed-wave laser induces extra thermal cycles, generating additional pre-existing dislocations that are uniformly distributed within the interiors of solidification cells, a phenomenon distinct from conventional AM. These pre-existing dislocations not only enhance the room-temperature yield strength exceeding 800 MPa but also trigger the onset of deformation twinning prior to 2% strain. This early activation of deformation twinning contributes to steady work hardening throughout the entire plastic deformation, resulting in a large uniform elongation of nearly 40%. Our work offers valuable insights for designing novel AM processes with pulsed-wave lasers to advance the fabrication of high-value and high-performance alloys.
{"title":"Pulsed-wave laser additive manufacturing of CrCoNi medium-entropy alloys with high strength and ductility","authors":"Shubo Gao , Weiming Ji , Qi Zhu , Asker Jarlöv , Xiaojun Shen , Xueyu Bai , Chenyang Zhu , Yung Zhen Lek , Zhongmin Xiao , Kun Zhou","doi":"10.1016/j.mattod.2024.10.004","DOIUrl":"10.1016/j.mattod.2024.10.004","url":null,"abstract":"<div><div>One of the most popular medium- and high-entropy alloys is CrCoNi alloy, renowned for its outstanding mechanical properties, particularly at cryogenic temperatures. However, further enhancing the yield strength of CrCoNi at room temperature while maintaining its high ductility remains challenging. In this study, we explore the potential of using a pulsed-wave laser in the powder bed fusion, a dominant metal additive manufacturing (AM) technique, to achieve exceptional room-temperature strength–ductility synergy in CrCoNi alloy. The pulsed-wave laser induces extra thermal cycles, generating additional pre-existing dislocations that are uniformly distributed within the interiors of solidification cells, a phenomenon distinct from conventional AM. These pre-existing dislocations not only enhance the room-temperature yield strength exceeding 800 MPa but also trigger the onset of deformation twinning prior to 2% strain. This early activation of deformation twinning contributes to steady work hardening throughout the entire plastic deformation, resulting in a large uniform elongation of nearly 40%. Our work offers valuable insights for designing novel AM processes with pulsed-wave lasers to advance the fabrication of high-value and high-performance alloys.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"81 ","pages":"Pages 36-46"},"PeriodicalIF":21.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143164634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 : 2024-12-01DOI: 10.1016/j.mattod.2024.10.006
Wang Wang , Bei Cheng , Guoqiang Luo , Jiaguo Yu , Shaowen Cao
As an emerging photocatalytic system for the use of solar energy, step-scheme (S-scheme) heterojunction has demonstrated its high efficiency and prospect in the realms of energy conversion and environment treatment. To provide a deep understanding of the superiority of the S-scheme heterojunction in photocatalysis, the history and evolution of the S-scheme heterojunction are revisited and covered based on the challenges and issues faced by single photocatalysts and other types of heterojunctions. Afterwards, the design principle and characterization techniques of the S-scheme heterojunction are summarized and reviewed. Owing to the unique structural features with fascinating electronic, photonic, and chemical properties, two-dimensional (2D) materials have been widely used in the construction of the S-scheme heterojunctions. Based on the contact mode of the two components, the S-scheme heterojunction based on the 2D materials can be classified into 0D/2D, 1D/2D and 2D/2D heterojunctions. The versatility of the combinations provides 2D-based heterostructures plenty of intriguing physio-chemical properties, making them promising candidates for the photocatalysis of many critical reactions. Herein, the latest updates for the development of the 2D materials-based S-scheme heterojunctions are presented and discussed. Moreover, the challenges and future directions for the S-scheme heterojunctions are critically approached and outlined.
{"title":"S-scheme heterojunction photocatalysts based on 2D materials","authors":"Wang Wang , Bei Cheng , Guoqiang Luo , Jiaguo Yu , Shaowen Cao","doi":"10.1016/j.mattod.2024.10.006","DOIUrl":"10.1016/j.mattod.2024.10.006","url":null,"abstract":"<div><div>As an emerging photocatalytic system for the use of solar energy, step-scheme (S-scheme) heterojunction has demonstrated its high efficiency and prospect in the realms of energy conversion and environment treatment. To provide a deep understanding of the superiority of the S-scheme heterojunction in photocatalysis, the history and evolution of the S-scheme heterojunction are revisited and covered based on the challenges and issues faced by single photocatalysts and other types of heterojunctions. Afterwards, the design principle and characterization techniques of the S-scheme heterojunction are summarized and reviewed. Owing to the unique structural features with fascinating electronic, photonic, and chemical properties, two-dimensional (2D) materials have been widely used in the construction of the S-scheme heterojunctions. Based on the contact mode of the two components, the S-scheme heterojunction based on the 2D materials can be classified into 0D/2D, 1D/2D and 2D/2D heterojunctions. The versatility of the combinations provides 2D-based heterostructures plenty of intriguing physio-chemical properties, making them promising candidates for the photocatalysis of many critical reactions. Herein, the latest updates for the development of the 2D materials-based S-scheme heterojunctions are presented and discussed. Moreover, the challenges and future directions for the S-scheme heterojunctions are critically approached and outlined.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"81 ","pages":"Pages 137-158"},"PeriodicalIF":21.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 : 2024-12-01DOI: 10.1016/j.mattod.2024.10.008
Alex Inman , Bita Soltan Mohammadlou , Kateryna Shevchuk , James FitzPatrick , Jung Wook Park , Noah Pacik-Nelson , Iryna Roslyk , Eric M. Gallo , Raghav Garg , Flavia Vitale , Andreea Danielescu , Yury Gogotsi
As the Internet of Things (IoT) expands, electronics will take on new form factors. With the ubiquity of textiles in our daily lives, integrating functionality into them is a promising proposition. Realizing a future with textile-based electronics (e-textiles) will require on-textile power supplies. Due to their high conductivity, electrochemically active surface, and ability to produce additive-free coatings from aqueous inks, MXenes are an ideal material to integrate into textiles to add functionality as well as generate and store electrical energy. Herein, we demonstrate an on-garment energy grid utilizing MXenes in textile-based supercapacitors and wireless chargers. Our on-garment energy grid can power real-world electronics, including peripheral electronics performing environmental sensing and data transmission, including an all-MXene surface electromyography (sEMG) sensor with real-time data transmission. Finally, we create a fully wireless textile-MXene joule heater directly powered by our MXene coil.
{"title":"MXene-enabled textile-based energy grid utilizing wireless charging","authors":"Alex Inman , Bita Soltan Mohammadlou , Kateryna Shevchuk , James FitzPatrick , Jung Wook Park , Noah Pacik-Nelson , Iryna Roslyk , Eric M. Gallo , Raghav Garg , Flavia Vitale , Andreea Danielescu , Yury Gogotsi","doi":"10.1016/j.mattod.2024.10.008","DOIUrl":"10.1016/j.mattod.2024.10.008","url":null,"abstract":"<div><div>As the Internet of Things (IoT) expands, electronics will take on new form factors. With the ubiquity of textiles in our daily lives, integrating functionality into them is a promising proposition. Realizing a future with textile-based electronics (e-textiles) will require on-textile power supplies. Due to their high conductivity, electrochemically active surface, and ability to produce additive-free coatings from aqueous inks, MXenes are an ideal material to integrate into textiles to add functionality as well as generate and store electrical energy. Herein, we demonstrate an on-garment energy grid utilizing MXenes in textile-based supercapacitors and wireless chargers. Our on-garment energy grid can power real-world electronics, including peripheral electronics performing environmental sensing and data transmission, including an all-MXene surface electromyography (sEMG) sensor with real-time data transmission. Finally, we create a fully wireless textile-MXene joule heater directly powered by our MXene coil.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"81 ","pages":"Pages 59-69"},"PeriodicalIF":21.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-01DOI: 10.1016/j.mattod.2024.10.003
Feixia Tan , Yi Cao , Weihui Sang , Zichao Han , Honghong Li , Tinghao Wang , Wenyu Songlu , Yang Gan , Yuan Yu , Xumeng Zhang , Tao Liu , Du Xiang
The bio-inspired artificial neuromorphic visual system, which possesses integrated sensing, memory and computing functionalities, is envisioned to demonstrate great potential in overcoming the challenges of data transmission latency and high energy consumption. Huge efforts have been devoted to developing novel hardware devices to achieve the goal under various working mechanisms, which however yield limited success in emulating the full functionalities of the visual system in a single device with simplified configuration. Here, we report an all-in-one visual platform based on a multifunctional MoS2 phototransistor array fabricated on the silicon-rich silicon nitride (sr-SiNx) substrate for in-sensor computing from ultraviolet to near-infrared spectrum. The array exhibits non-volatile optical/electrical programming features through deliberately manipulating the charge storage in the sr-SiNx dielectric, which are analogous to the learning/forgetting processes in the real human visual system. These characteristics enable the integration of broadband image sensing and pre-processing, dynamic learning and noise filtering, and image recognition in a single device. The array achieves high recognition accuracy of 90.2 % (98.4 %) based on the Fashion MNIST (MNIST) database, suggesting its robust functionalities. These results envision dielectric engineering as a promising approach to realize simplified neuromorphic visual units that integrate all the fundamental functions in the bio-visual system, offering new opportunities for designing innovative neuromorphic hardware.
{"title":"Multifunctional broadband artificial visual system using all-in-one two-dimensional optoelectronic transistors","authors":"Feixia Tan , Yi Cao , Weihui Sang , Zichao Han , Honghong Li , Tinghao Wang , Wenyu Songlu , Yang Gan , Yuan Yu , Xumeng Zhang , Tao Liu , Du Xiang","doi":"10.1016/j.mattod.2024.10.003","DOIUrl":"10.1016/j.mattod.2024.10.003","url":null,"abstract":"<div><div>The bio-inspired artificial neuromorphic visual system, which possesses integrated sensing, memory and computing functionalities, is envisioned to demonstrate great potential in overcoming the challenges of data transmission latency and high energy consumption. Huge efforts have been devoted to developing novel hardware devices to achieve the goal under various working mechanisms, which however yield limited success in emulating the full functionalities of the visual system in a single device with simplified configuration. Here, we report an all-in-one visual platform based on a multifunctional MoS<sub>2</sub> phototransistor array fabricated on the silicon-rich silicon nitride (sr-SiN<em><sub>x</sub></em>) substrate for in-sensor computing from ultraviolet to near-infrared spectrum. The array exhibits non-volatile optical/electrical programming features through deliberately manipulating the charge storage in the sr-SiN<em><sub>x</sub></em> dielectric, which are analogous to the learning/forgetting processes in the real human visual system. These characteristics enable the integration of broadband image sensing and pre-processing, dynamic learning and noise filtering, and image recognition in a single device. The array achieves high recognition accuracy of 90.2 % (98.4 %) based on the Fashion MNIST (MNIST) database, suggesting its robust functionalities. These results envision dielectric engineering as a promising approach to realize simplified neuromorphic visual units that integrate all the fundamental functions in the bio-visual system, offering new opportunities for designing innovative neuromorphic hardware.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"81 ","pages":"Pages 23-35"},"PeriodicalIF":21.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 : 2024-12-01DOI: 10.1016/j.mattod.2024.10.010
Yi Zhou , Jun Li , Long Liu , Cuifang Wang , Reilly P. Lynch , Bing Bai , Hsien-Yi Hsu , Zongyou Yin , Andreu Cabot , Richard D. Robinson , Ido Hadar , Zongping Shao , Mark A. Buntine , Xuyong Yang , Guohua Jia
Despite significant progress in the synthesis of nanocrystals (NCs) by conventional wet-chemical synthetic approaches, producing nanostructures with complex architectures tailored to specific applications remains a formidable challenge. Recently, anion-driven synthesis, including oxidation, sulfidation, phosphorization, nitridation, selenization, telluridation, and chlorination have emerged as a versatile approach to produce novel nanostructured materials with tuned size, morphology, crystal structure, and composition from the chemical transformation of template NCs. This chemical conversion can be accompanied by the formation of new NCs architectures, overall modifying the surface chemistry and the mechanical, electronic, optical, and magnetic properties of the material. This strategy can be used to optimize the performance of the material in a range of applications, including energy conversion and storage, catalysis, bioimaging, drug delivery, and sensing. In this review, we first detail the possible anion-driven synthesis and discuss the related underlying mechanisms. Subsequently, we overview the unique nanostructure obtained by this strategy and summarize their functional properties and potential applications. Finally, we provide perspectives and discuss the remaining challenges and the new opportunities in this field.
{"title":"Anion-driven enabled functional nanomaterials from metal and metal oxide nanoparticles","authors":"Yi Zhou , Jun Li , Long Liu , Cuifang Wang , Reilly P. Lynch , Bing Bai , Hsien-Yi Hsu , Zongyou Yin , Andreu Cabot , Richard D. Robinson , Ido Hadar , Zongping Shao , Mark A. Buntine , Xuyong Yang , Guohua Jia","doi":"10.1016/j.mattod.2024.10.010","DOIUrl":"10.1016/j.mattod.2024.10.010","url":null,"abstract":"<div><div>Despite significant progress in the synthesis of nanocrystals (NCs) by conventional wet-chemical synthetic approaches, producing nanostructures with complex architectures tailored to specific applications remains a formidable challenge. Recently, anion-driven synthesis, including oxidation, sulfidation, phosphorization, nitridation, selenization, telluridation, and chlorination have emerged as a versatile approach to produce novel nanostructured materials with tuned size, morphology, crystal structure, and composition from the chemical transformation of template NCs. This chemical conversion can be accompanied by the formation of new NCs architectures, overall modifying the surface chemistry and the mechanical, electronic, optical, and magnetic properties of the material. This strategy can be used to optimize the performance of the material in a range of applications, including energy conversion and storage, catalysis, bioimaging, drug delivery, and sensing. In this review, we first detail the possible anion-driven synthesis and discuss the related underlying mechanisms. Subsequently, we overview the unique nanostructure obtained by this strategy and summarize their functional properties and potential applications. Finally, we provide perspectives and discuss the remaining challenges and the new opportunities in this field.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"81 ","pages":"Pages 159-227"},"PeriodicalIF":21.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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