Pub Date : 2025-04-12DOI: 10.1016/j.cej.2025.162500
Surya Kiran Ampasala, Samanth Kokkiligadda, Tae Gwang Yun, Yves Lansac, Yun Hee Jang, Soong Ho Um
This study investigates the synthesis and electrochemical performance of a core–shell architecture comprising amorphous carbon-coated NiSe2 as the core and birnessite δ-MnO2 as the shell. Integrating δ-MnO2, known for its high pseudocapacitance, with a conductive carbon interlayer for efficient electron transport and a stable NiSe2 core, enables superior energy storage and charge transfer dynamics. Structural and morphological optimization of the hybrid electrode enhances ion diffusion and charge storage, resulting in outstanding energy and power densities. The optimized MnO2@C@NiSe2 electrode achieves a remarkable areal capacity of 2236.84 µAh cm−2 and a specific capacity of 272.24mAh g−1, while demonstrating excellent cyclic stability with 75.8 % capacity retention over 10,000 cycles. The fabricated hybrid asymmetric device exhibits a specific capacitance of 173.2F g−1 at 5 mA cm−2 and delivers an ultrahigh areal energy density of 213.6 µWh cm−2 at an areal power density of 21,000 µW cm−2. Cycling stability shows a 76 % capacitance retention after 20,000 cycles using an aqueous KOH electrolyte. Additionally, a pouch cell device demonstrates practical applicability by maintaining a stable 3 V output, effectively powering electronic displays and LED arrays. This work highlights the MnO2@C@NiSe2 core–shell hybrid as a promising candidate for high-performance energy storage and real-world device applications.
{"title":"Enhanced electrochemical performance through the structural core–shell morphological tuning of δ-MnO2@C@NiSe2 and realization of asymmetry energy storage devices","authors":"Surya Kiran Ampasala, Samanth Kokkiligadda, Tae Gwang Yun, Yves Lansac, Yun Hee Jang, Soong Ho Um","doi":"10.1016/j.cej.2025.162500","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162500","url":null,"abstract":"This study investigates the synthesis and electrochemical performance of a core–shell architecture comprising amorphous carbon-coated NiSe<sub>2</sub> as the core and birnessite δ-MnO<sub>2</sub> as the shell. Integrating δ-MnO<sub>2</sub>, known for its high pseudocapacitance, with a conductive carbon interlayer for efficient electron transport and a stable NiSe<sub>2</sub> core, enables superior energy storage and charge transfer dynamics. Structural and morphological optimization of the hybrid electrode enhances ion diffusion and charge storage, resulting in outstanding energy and power densities. The optimized MnO<sub>2</sub>@C@NiSe<sub>2</sub> electrode achieves a remarkable areal capacity of 2236.84 µAh cm<sup>−2</sup> and a specific capacity of 272.24mAh g<sup>−1</sup>, while demonstrating excellent cyclic stability with 75.8 % capacity retention over 10,000 cycles. The fabricated hybrid asymmetric device exhibits a specific capacitance of 173.2F g<sup>−1</sup> at 5 mA cm<sup>−2</sup> and delivers an ultrahigh areal energy density of 213.6 µWh cm<sup>−2</sup> at an areal power density of 21,000 µW cm<sup>−2</sup>. Cycling stability shows a 76 % capacitance retention after 20,000 cycles using an aqueous KOH electrolyte. Additionally, a pouch cell device demonstrates practical applicability by maintaining a stable 3 V output, effectively powering electronic displays and LED arrays. This work highlights the MnO<sub>2</sub>@C@NiSe<sub>2</sub> core–shell hybrid as a promising candidate for high-performance energy storage and real-world device applications.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"6 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143824808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-12DOI: 10.1016/j.cej.2025.162519
Xiao-Jing Wang, Jie Wang, Zhizhi Yang, Ye Zhang, Kai Cheng, Jun-Ying Han, Fu-Xiang Chang, Yang-Chun Yong
Starch was considered as one of the most abundant and high energy–density fuel for microbial fuel cell (MFC). However, the starch MFC usually encountered the problems of low performance and time-consuming fabrication. Here, a 3D printing approach for construction of starch MFC with rationally designed synthetic bacterial consortium was developed, which dramatically improved the MFC performance and largely simplified the bioelectrode fabrication process. The synthetic consortium containing two surface display starch depolymerization enzymes, fermentation bacterial cell and electroactive bacterial cell. With this synthetic consortium, a ready-to-use bioelectrode was simply printed by homogeneously mixing cells, sodium alginate, cellulose, and acetylene carbon black as the bioink through a 3D printer. After optimization, synthetic consortium embedded 3D-printed bioelectrode exhibited dramatically decrease on the charge transfer resistance with high capacitance, which enabled excellent extracellular electron transfer between cells and the electrode. More impressively, the MFCs with this 3D-printed bioelectrode delivered a power output of 484 mW/m2 from untreated starch. This work demonstrated the potential of 3D printing for construction of high performance MFC with synthetic consortium, which would add new tool for application of synthetic biology in MFC.
{"title":"3D printing of synthetic microbial consortium for boosting bioelectricity generation from starch","authors":"Xiao-Jing Wang, Jie Wang, Zhizhi Yang, Ye Zhang, Kai Cheng, Jun-Ying Han, Fu-Xiang Chang, Yang-Chun Yong","doi":"10.1016/j.cej.2025.162519","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162519","url":null,"abstract":"Starch was considered as one of the most abundant and high energy–density fuel for microbial fuel cell (MFC). However, the starch MFC usually encountered the problems of low performance and time-consuming fabrication. Here, a 3D printing approach for construction of starch MFC with rationally designed synthetic bacterial consortium was developed, which dramatically improved the MFC performance and largely simplified the bioelectrode fabrication process. The synthetic consortium containing two surface display starch depolymerization enzymes, fermentation bacterial cell and electroactive bacterial cell. With this synthetic consortium, a ready-to-use bioelectrode was simply printed by homogeneously mixing cells, sodium alginate, cellulose, and acetylene carbon black as the bioink through a 3D printer. After optimization, synthetic consortium embedded 3D-printed bioelectrode exhibited dramatically decrease on the charge transfer resistance with high capacitance, which enabled excellent extracellular electron transfer between cells and the electrode. More impressively, the MFCs with this 3D-printed bioelectrode delivered a power output of 484 mW/m<sup>2</sup> from untreated starch. This work demonstrated the potential of 3D printing for construction of high performance MFC with synthetic consortium, which would add new tool for application of synthetic biology in MFC.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"38 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143824813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-12DOI: 10.1016/j.cej.2025.162591
Yatao Liu, Dongyao Yue, Jiamin Chen, Yang Yang, Ronghua Xu, Zhenbei Wang, Chen Li, Fan Li, Fei Qi, Ewa Maria Siedlecka, Jolanta Kumirska, Amir Ikhlaq, Oksana Ismailova
Dissolved organic matter (DOM) in stormwater runoff significantly impacted the degradation efficiency of trace organic pollutants (TOrCs) by heterogeneous catalytic systems, but its quantitative elucidation and reaction kinetics remained underexplored. In this work, the influence of DOM from stormwater runoff on TOrCs purification by a phosphorus, boron, and nitrogen-doped iron@porous carbon catalyst (PB-Fe@CN) to activate peroxymonosulfate was quantitatively investigated. Bimolecular reaction rate constants were determined to quantify the interactions between DOM/TOrCs and reactive oxygen species (ROS). The PB-Fe@CN catalyst exhibited great efficiency (71.2 ∼ 100 %) in degrading TOrCs, but DOM significantly reduces ROS steady-state concentrations of the system through competitive adsorption and radical scavenging effects. Reaction kinetic analysis showed that DOM’s scavenging effect on •OH (3.05 × 103 ∼ 3.21 × 103 L·mgC-1·s−1) was significantly stronger than that on SO4•− (2.54 × 102 ∼ 2.75 × 102 L·mgC-1·s−1). Additionally, DFT calculations were employed to elucidate the degradation pathways and toxicity changes of TOrCs under DOM interference in stormwater runoff. Finally, we designed a feasible application scenario for PB-Fe@CN coupling multi-layer infiltration systems and bioretention facilities to maximize the potential of PB-Fe@CN to degrade TOrCs in stormwater runoff. This study provides a novel quantitative perspective on the mechanism of DOM in heterogeneous catalytic systems and a technical reference for the efficient resource utilization of stormwater.
{"title":"Mechanistic insights into the influence of dissolved organic matter in stormwater runoff on the TOrCs degradation by PB-Fe@CN: Reaction kinetics and degradation pathways","authors":"Yatao Liu, Dongyao Yue, Jiamin Chen, Yang Yang, Ronghua Xu, Zhenbei Wang, Chen Li, Fan Li, Fei Qi, Ewa Maria Siedlecka, Jolanta Kumirska, Amir Ikhlaq, Oksana Ismailova","doi":"10.1016/j.cej.2025.162591","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162591","url":null,"abstract":"Dissolved organic matter (DOM) in stormwater runoff significantly impacted the degradation efficiency of trace organic pollutants (TOrCs) by heterogeneous catalytic systems, but its quantitative elucidation and reaction kinetics remained underexplored. In this work, the influence of DOM from stormwater runoff on TOrCs purification by a phosphorus, boron, and nitrogen-doped iron@porous carbon catalyst (PB-Fe@CN) to activate peroxymonosulfate was quantitatively investigated. Bimolecular reaction rate constants were determined to quantify the interactions between DOM/TOrCs and reactive oxygen species (ROS). The PB-Fe@CN catalyst exhibited great efficiency (71.2 ∼ 100 %) in degrading TOrCs, but DOM significantly reduces ROS steady-state concentrations of the system through competitive adsorption and radical scavenging effects. Reaction kinetic analysis showed that DOM’s scavenging effect on •OH (3.05 × 10<sup>3</sup> ∼ 3.21 × 10<sup>3</sup> L·mgC<sup>-1</sup>·s<sup>−1</sup>) was significantly stronger than that on SO<sub>4</sub><sup>•−</sup> (2.54 × 10<sup>2</sup> ∼ 2.75 × 10<sup>2</sup> L·mgC<sup>-1</sup>·s<sup>−1</sup>). Additionally, DFT calculations were employed to elucidate the degradation pathways and toxicity changes of TOrCs under DOM interference in stormwater runoff. Finally, we designed a feasible application scenario for PB-Fe@CN coupling multi-layer infiltration systems and bioretention facilities to maximize the potential of PB-Fe@CN to degrade TOrCs in stormwater runoff. This study provides a novel quantitative perspective on the mechanism of DOM in heterogeneous catalytic systems and a technical reference for the efficient resource utilization of stormwater.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"38 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143824920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The thermochemical recycling of face mask (FM) waste into syngas shows great potential for the harmless treating, rapid quantity reducing and resource utilization. In this study, a novel pyrolysis and chemical looping cracking-gasification method was developed to achieve the highly efficient conversion of two disposable surgical masks (White FM and Blue FM) and N95 mask into syngas. The redox catalysts of Fe/Co/Ni oxide supported with Al2O3 were synthesized by the co-precipitation method with the molar ratio of 2:1 for the conversion of FMs. Results showed that the pyrolysis and in-line chemical looping cracking-gasification method could efficiently convert White FM into syngas with the H2 productivity of 93.84 mmol/g with Fe2Al. Moreover, the quality of the produced syngas was very high with the concentration of 92.37 % and the H2/CO ratio of 2.03, which was the ideal feedstock for the Fischer-Tropsch synthesis into chemical compounds. Fe2Al was found to perform the best syngas properties compared with Co2Al and Ni2Al due to its higher reduction degree at chemical looping cracking step, and this would produce more H2 via steam-iron reaction during chemical looping gasification. The hydrocarbon vapors react with the redox catalyst, initially depositing carbon via chemical looping cracking, followed by syngas production and catalyst regeneration through steam-char gasification and steam-iron reoxidation reactions. It provided a promising technology for the recycling of FM with high carbon conversion efficiency and syngas concentration to produce syngas with H2/CO ratio of about 2.
{"title":"Pyrolysis and in-line chemical looping cracking-gasification of face mask waste into hydrogen-rich syngas","authors":"Haiping Yang, Tianle He, Zongtao Yu, Wei Cheng, Qiang Hu, Jingai Shao, Hanping Chen, Chi-Hwa Wang","doi":"10.1016/j.cej.2025.162539","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162539","url":null,"abstract":"The thermochemical recycling of face mask (FM) waste into syngas shows great potential for the harmless treating, rapid quantity reducing and resource utilization. In this study, a novel pyrolysis and chemical looping cracking-gasification method was developed to achieve the highly efficient conversion of two disposable surgical masks (White FM and Blue FM) and N95 mask into syngas. The redox catalysts of Fe/Co/Ni oxide supported with Al<sub>2</sub>O<sub>3</sub> were synthesized by the co-precipitation method with the molar ratio of 2:1 for the conversion of FMs. Results showed that the pyrolysis and in-line chemical looping cracking-gasification method could efficiently convert White FM into syngas with the H<sub>2</sub> productivity of 93.84 mmol/g with Fe2Al. Moreover, the quality of the produced syngas was very high with the concentration of 92.37 % and the H<sub>2</sub>/CO ratio of 2.03, which was the ideal feedstock for the Fischer-Tropsch synthesis into chemical compounds. Fe2Al was found to perform the best syngas properties compared with Co2Al and Ni2Al due to its higher reduction degree at chemical looping cracking step, and this would produce more H<sub>2</sub> via steam-iron reaction during chemical looping gasification. The hydrocarbon vapors react with the redox catalyst, initially depositing carbon via chemical looping cracking, followed by syngas production and catalyst regeneration through steam-char gasification and steam-iron reoxidation reactions. It provided a promising technology for the recycling of FM with high carbon conversion efficiency and syngas concentration to produce syngas with H<sub>2</sub>/CO ratio of about 2.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"543 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143819450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-11DOI: 10.1016/j.cej.2025.162549
Yunshan Zhang, Tuo Huang, Fang Yang, Qianglong Tan, Sisi Bu, Siyu Yu, Jing Ye, Tian Hang, Xianzhong Feng, Diming Zhang
The subtle free energy differences resulting from single nucleotide mutations pose a challenge for the specificity of nearly all DNA hybridization probes in identifying single nucleotide polymorphisms (SNPs). The narrow detection window between mutant target (MT) and wild-type target (WT) concentrations that produce the same level of detection signals limits the widespread application of current SNP detection technologies. In this paper, we introduce an efficient method for converting single-base information using a rationally designed ratio-signal DNA competitive converter (RDCC). This converter significantly expands the detection window for single-base mutations in nucleic acid sequences by enabling a user-defined conversion of quantitative relationships between detection signals and target concentrations. Both computer simulations and experimental validations have confirmed the effectiveness of RDCC in converting single-base information and expanding the detection window. By balancing both MT and WT signals, RDCC excels in identifying heterozygous samples with low mutation abundances. Additionally, RDCC has been proven to be harmoniously compatible with commonly used nucleic acid amplification techniques, such as PCR. Furthermore, we have demonstrated the practical application value of RDCC through genotyping tests on genomic samples from soybean leaves. Therefore, this study not only develops a powerful tool for SNP detection but also provides a paradigm for the design of specific nucleic acid probes.
{"title":"Mismatch-guided DNA competitive converter enables expanded detection window for discriminating single nucleotide polymorphisms","authors":"Yunshan Zhang, Tuo Huang, Fang Yang, Qianglong Tan, Sisi Bu, Siyu Yu, Jing Ye, Tian Hang, Xianzhong Feng, Diming Zhang","doi":"10.1016/j.cej.2025.162549","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162549","url":null,"abstract":"The subtle free energy differences resulting from single nucleotide mutations pose a challenge for the specificity of nearly all DNA hybridization probes in identifying single nucleotide polymorphisms (SNPs). The narrow detection window between mutant target (MT) and wild-type target (WT) concentrations that produce the same level of detection signals limits the widespread application of current SNP detection technologies. In this paper, we introduce an efficient method for converting single-base information using a rationally designed ratio-signal DNA competitive converter (RDCC). This converter significantly expands the detection window for single-base mutations in nucleic acid sequences by enabling a user-defined conversion of quantitative relationships between detection signals and target concentrations. Both computer simulations and experimental validations have confirmed the effectiveness of RDCC in converting single-base information and expanding the detection window. By balancing both MT and WT signals, RDCC excels in identifying heterozygous samples with low mutation abundances. Additionally, RDCC has been proven to be harmoniously compatible with commonly used nucleic acid amplification techniques, such as PCR. Furthermore, we have demonstrated the practical application value of RDCC through genotyping tests on genomic samples from soybean leaves. Therefore, this study not only develops a powerful tool for SNP detection but also provides a paradigm for the design of specific nucleic acid probes.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"4 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143819452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Despite the dendrite growth and volume change faced by Na metal anodes (SMAs) can be suppressed by constructing sodiophilic three-dimensional (3D) skeleton, the long-term cycling stability of SMAs under harsh work conditions (>10 mA cm−2; >5 mA h cm−2) is still unsatisfactory. Herein, a gradient-structured sodiophilic carbon skeleton, composed of carbon foam decorated with gradient-distributed Ag nanoparticles (Ag NPs@CF), is elaborately designed to enable the stable operation of SMAs even in harsh work environments. Firstly, the gradient sodiophilic structure of Ag NPs@CF directionally regulates the Na+ nucleation/growth behavior, homogenizing Na+ flux and electric field near the electrode and inhibiting dendrites formation. Secondly, the sodiophilic Ag NPs promote the formation of gradient solid electrolyte interphase, enhancing the interfacial stability and expediting Na+ transport kinetics at the interface. Furthermore, the open 3D structure of CF spatially confines Na deposition without volume change during cycling. Consequently, the Na-Ag NPs@CF symmetrical battery demonstrates stable cycling for over 2200h with an ultralow overpotential of 10.2 mV under harsh conditions of 10 mA cm−2/10 mA h cm−2. Meanwhile, the assembled Na-Ag NPs@CF||NVPOF full cells show superior rate capability and cycling stability. The gradient sodiophilic structure proposed in this work sparks new insights for designing high-performance SMAs.
{"title":"Gradient-Structured sodiophilic skeleton integrated with spatial confinement effect Enables high-rate and ultra-stable Na metal batteries","authors":"Fang-Yu Tao, Dan Xie, Wan-Yue Diao, Chang Liu, Godefroid Gahungu, Wen-Liang Li, Jing-Ping Zhang","doi":"10.1016/j.cej.2025.161718","DOIUrl":"https://doi.org/10.1016/j.cej.2025.161718","url":null,"abstract":"Despite the dendrite growth and volume change faced by Na metal anodes (SMAs) can be suppressed by constructing sodiophilic three-dimensional (3D) skeleton, the long-term cycling stability of SMAs under harsh work conditions (>10 mA cm<sup>−2</sup>; >5 mA h cm<sup>−2</sup>) is still unsatisfactory. Herein, a gradient-structured sodiophilic carbon skeleton, composed of carbon foam decorated with gradient-distributed Ag nanoparticles (Ag NPs@CF), is elaborately designed to enable the stable operation of SMAs even in harsh work environments. Firstly, the gradient sodiophilic structure of Ag NPs@CF directionally regulates the Na<sup>+</sup> nucleation/growth behavior, homogenizing Na<sup>+</sup> flux and electric field near the electrode and inhibiting dendrites formation. Secondly, the sodiophilic Ag NPs promote the formation of gradient solid electrolyte interphase, enhancing the interfacial stability and expediting Na<sup>+</sup> transport kinetics at the interface. Furthermore, the open 3D structure of CF spatially confines Na deposition without volume change during cycling. Consequently, the Na-Ag NPs@CF symmetrical battery demonstrates stable cycling for over 2200h with an ultralow overpotential of 10.2 mV under harsh conditions of 10 mA cm<sup>−2</sup>/10 mA h cm<sup>−2</sup>. Meanwhile, the assembled Na-Ag NPs@CF||NVPOF full cells show superior rate capability and cycling stability. The gradient sodiophilic structure proposed in this work sparks new insights for designing high-performance SMAs.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"25 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143819459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The unprecedented interest towards flexible and portable electronics of the modern tech-savvy world increases the burden of e-waste. This work presents a biodegradable, wearable electronic skin (e-skin) with precise tactile sensing capability to address this challenge. The functional layers have been designed by fabricating β-glycine structures within gelatine matrix. These enhance the piezoelectric nature of the functional layer, yielding a piezoelectric coefficient of 22.5 pm/V. The fabricated self-powered e-skin demonstrates an excellent output voltage of 2.1 ± 0.1 V, yielding dynamic pressure sensitivity of 41.3 ± 1.3 mV/kPa with an ultralow response time of 1.0 ± 0.1 ms. Additionally, this e-skin effectively senses static pressure as low as 0.35 Pa in the form of a rice grain with a distinguishable output signal exhibiting the highest sensitivity of 1.74 ± 0.07 Pa−1. Further, a matrix structure based on the e-skin obtains the 2d projection of any unknown objects placed over it. Furthermore, the e-skin demonstrates efficient application in real-time wireless human–machine interactions. More significantly, the fabricated e-skin degrades within 7 days in tap water. Therefore, the abilities of the fabricated devices upgrade their potential in not only continuous health care monitoring but also human–machine interaction, enabling it as a smart green candidate for next-generation biodegradable flexible electronics.
{"title":"Highly biodegradable piezoelectric flexible wearable tactile sensors with amino acid crystals: a paradigm shift towards smart transient electronics","authors":"Sourav Maity, Ritesh Kumar Singh, Monika Gadhewal, Shree Prakash Tiwari","doi":"10.1016/j.cej.2025.162531","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162531","url":null,"abstract":"The unprecedented interest towards flexible and portable electronics of the modern tech-savvy world increases the burden of e-waste. This work presents a biodegradable, wearable electronic skin (e-skin) with precise tactile sensing capability to address this challenge. The functional layers have been designed by fabricating β-glycine structures within gelatine matrix. These enhance the piezoelectric nature of the functional layer, yielding a piezoelectric coefficient of 22.5 pm/V. The fabricated self-powered e-skin demonstrates an excellent output voltage of 2.1 ± 0.1 V, yielding dynamic pressure sensitivity of 41.3 ± 1.3 mV/kPa with an ultralow response time of 1.0 ± 0.1 ms. Additionally, this e-skin effectively senses static pressure as low as 0.35 Pa in the form of a rice grain with a distinguishable output signal exhibiting the highest sensitivity of 1.74 ± 0.07 Pa<sup>−1</sup>. Further, a matrix structure based on the e-skin obtains the 2d projection of any unknown objects placed over it. Furthermore, the e-skin demonstrates efficient application in real-time wireless human–machine interactions. More significantly, the fabricated e-skin degrades within 7 days in tap water. Therefore, the abilities of the fabricated devices upgrade their potential in not only continuous health care monitoring but also human–machine interaction, enabling it as a smart green candidate for next-generation biodegradable flexible electronics.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"39 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143819725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-11DOI: 10.1016/j.cej.2025.162537
Yuan Guo, Shixin Wang, Xianfeng Du, Zhongshuai Liang, Ruizhi Wang, Zhuo Li, Xiang Li
Metal-insulator–metal aluminium electrolytic capacitors (MIM-AECs) combines high capacity-density and high breakdown field strength of solid AECs with high frequency responsibility, wide working temperature window and waterproof properties of MIM nanocapacitors. However, diffusion and defects at multilevel interfaces hinder the development of high-breakdown, high-reliability devices. Herein, we successfully fabricated highly reliable MIM-AECs with ultra-high breakdown field strength (6.5 MV/cm) and low leakage current (1.1 × 10-8 A/cm2, four orders of magnitude lower than previously reported). This was achieved by introducing a buffer layer ALD-Al2O3 at the cathode/dielectric (SnO2/AAO) interface and passivating defective sites at the SnO2/Al2O3/AAO multi-interface. The buffer layer effectively inhibits Sn atom diffusion at the SnO2/AAO interface, thereby ensuring a high breakdown field strength for the dielectric layer AAO. Simultaneously, oxygen plasma activation combined with H2O vapor treatment introduces –OH active sites, leading to a high-quality MIM interface with reduced defects. Additionally, the device utilizes ALD technology for high SnO2 cathode coverage on the porous dielectric/anode, resulting in high energy density (1.41 µWh/cm2) and power density (17.5 W/cm2), low tan δ (1.7 %), a phase angle of −89.7°, as well as wide temperature (−60 °C ∼ 326 °C) and humidity resistance (100 % RH). It also exhibits excellent circuit filtering under 1 V-8 V and charging/discharging performance. This work presents an important step for high-reliability MIM-AECs towards practical applications for energy storage systems in harsh environments.
{"title":"Interface optimization strategy for high reliability MIM-type aluminum electrolytic capacitors","authors":"Yuan Guo, Shixin Wang, Xianfeng Du, Zhongshuai Liang, Ruizhi Wang, Zhuo Li, Xiang Li","doi":"10.1016/j.cej.2025.162537","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162537","url":null,"abstract":"Metal-insulator–metal aluminium electrolytic capacitors (MIM-AECs) combines high capacity-density and high breakdown field strength of solid AECs with high frequency responsibility, wide working temperature window and waterproof properties of MIM nanocapacitors. However, diffusion and defects at multilevel interfaces hinder the development of high-breakdown, high-reliability devices. Herein, we successfully fabricated highly reliable MIM-AECs with ultra-high breakdown field strength (6.5 MV/cm) and low leakage current (1.1 × 10<sup>-8</sup> A/cm<sup>2</sup>, four orders of magnitude lower than previously reported). This was achieved by introducing a buffer layer ALD-Al<sub>2</sub>O<sub>3</sub> at the cathode/dielectric (SnO<sub>2</sub>/AAO) interface and passivating defective sites at the SnO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub>/AAO multi-interface. The buffer layer effectively inhibits Sn atom diffusion at the SnO<sub>2</sub>/AAO interface, thereby ensuring a high breakdown field strength for the dielectric layer AAO. Simultaneously, oxygen plasma activation combined with H<sub>2</sub>O vapor treatment introduces –OH active sites, leading to a high-quality MIM interface with reduced defects. Additionally, the device utilizes ALD technology for high SnO<sub>2</sub> cathode coverage on the porous dielectric/anode, resulting in high energy density (1.41 µWh/cm<sup>2</sup>) and power density (17.5 W/cm<sup>2</sup>), low tan δ (1.7 %), a phase angle of −89.7°, as well as wide temperature (−60 °C ∼ 326 °C) and humidity resistance (100 % RH). It also exhibits excellent circuit filtering under 1 V-8 V and charging/discharging performance. This work presents an important step for high-reliability MIM-AECs towards practical applications for energy storage systems in harsh environments.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"37 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143819834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-11DOI: 10.1016/j.cej.2025.162535
Jiayue Wu, Xing Chen, Jing Zeng, Jinbao Zhao
Polyanion-type iron-based sulfates are promising candidates for cathode in sodium-ion batteries due to the cost-effectiveness. However, the material exhibits a high sensitivity to humidity, which significantly increases the costs associated with cell fabrication. Therefore, it’s critical for the industrial application to understand the humidity-induced degradation mechanism and develop regeneration strategies. In this study, Na2.67Fe1.67(SO4)3 (NFS) exhibiting an outstanding capacity retention of 77.8 % after 6000 cycles, is used as the model to systematically investigate the intrinsic causes of degradation upon exposure to moisture. Specifically, water ingress and the strong Coulombic repulsion between Fe-Fe induce the decoupling of the [Fe2O10] dimer, causing the transformation into bloedite-type Na2Fe(SO4)2·4H2O. The π-contributing orbital interaction between O of water and Fe, along with the hydrogen-bonding network formed between H in water and the lattice O, confers additional structural stability to the hydrate. Theoretical calculations and enthalpy measurements indicate that the hydration reaction is thermodynamically spontaneous, with the Gibbs free energy change of −0.91 eV and the enthalpy change of –22.083 kJ/mol. After two days of exposure to 50 % humidity, the capacity degrades to approximately 83.5 % and a secondary heating strategy is developed to restore the fully degraded NFS to its original crystal structure and recover up to 94 % of the initial capacity. This study provides comprehensive insights into the causes of air instability in NFS and proposes an effective strategy for capacity regeneration.
{"title":"Elucidating of moisture-induced degradation and rehealing of alluaudite Na2+2xFe2-x(SO4)3 cathode for Sodium-Ion batteries","authors":"Jiayue Wu, Xing Chen, Jing Zeng, Jinbao Zhao","doi":"10.1016/j.cej.2025.162535","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162535","url":null,"abstract":"Polyanion-type iron-based sulfates are promising candidates for cathode in sodium-ion batteries due to the cost-effectiveness. However, the material exhibits a high sensitivity to humidity, which significantly increases the costs associated with cell fabrication. Therefore, it’s critical for the industrial application to understand the humidity-induced degradation mechanism and develop regeneration strategies. In this study, Na<sub>2.67</sub>Fe<sub>1.67</sub>(SO<sub>4</sub>)<sub>3</sub> (NFS) exhibiting an outstanding capacity retention of 77.8 % after 6000 cycles, is used as the model to systematically investigate the intrinsic causes of degradation upon exposure to moisture. Specifically, water ingress and the strong Coulombic repulsion between Fe-Fe induce the decoupling of the [Fe<sub>2</sub>O<sub>10</sub>] dimer, causing the transformation into bloedite-type Na<sub>2</sub>Fe(SO<sub>4</sub>)<sub>2</sub>·4H<sub>2</sub>O. The π-contributing orbital interaction between O of water and Fe, along with the hydrogen-bonding network formed between H in water and the lattice O, confers additional structural stability to the hydrate. Theoretical calculations and enthalpy measurements indicate that the hydration reaction is thermodynamically spontaneous, with the Gibbs free energy change of −0.91 eV and the enthalpy change of –22.083 kJ/mol. After two days of exposure to 50 % humidity, the capacity degrades to approximately 83.5 % and a secondary heating strategy is developed to restore the fully degraded NFS to its original crystal structure and recover up to 94 % of the initial capacity. This study provides comprehensive insights into the causes of air instability in NFS and proposes an effective strategy for capacity regeneration.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"218 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143819840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-11DOI: 10.1016/j.cej.2025.162481
Yan Xiong, Min Li, Shunsheng Yuan, Yuting Liu, Tong Jin, Jincong Pang, Sihao Xia, Mingquan Liao, Lingling Liu, Lingfeng Wu, Kuan Yew Cheong, Huayang Yu, Bo Ao, Guangda Niu, Jiang Tang, Ling Xu
Metal halide perovskite single crystals exhibit a significantly lower defect density and superior charge transport properties compared to polycrystalline materials, demonstrating outstanding performance in X-ray and γ-ray detection. However, the surface defect density of single crystals is substantially higher than that of the bulk, which severely limits the development of perovskite single crystal devices. In this study, we explore a surface passivation strategy for single crystals by constructing a 2D/3D heterojunction on the surface of 3D perovskite single crystals. Specifically, we directly grew a layer of ThMA2PbBr4 with nanometer-scale thickness on the surface of FAPbBr3 single crystals, which effectively suppressed the formation of secondary phases at the 2D/3D interface and passivated the surface defects of the 3D perovskite single crystals. As a result, the surface trap density was reduced by more than an order of magnitude, and the carrier diffusion coefficient was enhanced by over twofold. When applied to soft X-ray detection, the treated FAPbBr3 single crystals exhibited a response time that was reduced by two orders of magnitude compared to untreated crystals. The sensitivity is comparable to the best performance of planar structured (M−S−M) soft X-ray detectors. In devices based on the Bi/FAPbBr3/Au structure, the dark current density of the treated single crystal device was reduced by an order of magnitude, and an energy resolution of 6.3 % was achieved for 662 keV γ-rays, which was not attainable before treatment.
{"title":"Surface passivated 3D halide perovskite single crystal by 2D perovskite towards high performance soft X-ray detection and gamma-ray spectrum","authors":"Yan Xiong, Min Li, Shunsheng Yuan, Yuting Liu, Tong Jin, Jincong Pang, Sihao Xia, Mingquan Liao, Lingling Liu, Lingfeng Wu, Kuan Yew Cheong, Huayang Yu, Bo Ao, Guangda Niu, Jiang Tang, Ling Xu","doi":"10.1016/j.cej.2025.162481","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162481","url":null,"abstract":"Metal halide perovskite single crystals exhibit a significantly lower defect density and superior charge transport properties compared to polycrystalline materials, demonstrating outstanding performance in X-ray and γ-ray detection. However, the surface defect density of single crystals is substantially higher than that of the bulk, which severely limits the development of perovskite single crystal devices. In this study, we explore a surface passivation strategy for single crystals by constructing a 2D/3D heterojunction on the surface of 3D perovskite single crystals. Specifically, we directly grew a layer of ThMA<sub>2</sub>PbBr<sub>4</sub> with nanometer-scale thickness on the surface of FAPbBr<sub>3</sub> single crystals, which effectively suppressed the formation of secondary phases at the 2D/3D interface and passivated the surface defects of the 3D perovskite single crystals. As a result, the surface trap density was reduced by more than an order of magnitude, and the carrier diffusion coefficient was enhanced by over twofold. When applied to soft X-ray detection, the treated FAPbBr<sub>3</sub> single crystals exhibited a response time that was reduced by two orders of magnitude compared to untreated crystals. The sensitivity is comparable to the best performance of planar structured (M−S−M) soft X-ray detectors. In devices based on the Bi/FAPbBr<sub>3</sub>/Au structure, the dark current density of the treated single crystal device was reduced by an order of magnitude, and an energy resolution of 6.3 % was achieved for 662 keV γ-rays, which was not attainable before treatment.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"14 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143822866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：