Carbon Energy最新文献_第2页

High-performance and flexible thermoelectric generator based on a robust carbon nanotube/BiSbTe foam

IF 19.5 1区材料科学

Carbon Energy Pub Date : 2024-11-15 DOI: 10.1002/cey2.650

Myeong Hoon Jeong, Eun Jin Bae, Byoungwook Park, Jong-Woon Ha, Mijeong Han, Young Hun Kang

{"title":"High-performance and flexible thermoelectric generator based on a robust carbon nanotube/BiSbTe foam","authors":"Myeong Hoon Jeong, Eun Jin Bae, Byoungwook Park, Jong-Woon Ha, Mijeong Han, Young Hun Kang","doi":"10.1002/cey2.650","DOIUrl":"https://doi.org/10.1002/cey2.650","url":null,"abstract":"Organic thermoelectric generators (TEGs) are flexible and lightweight, but they often have high electrical resistance, poor output power, and low mechanical durability, because of which their thermoelectric performance is poor. We used a facile and rapid solvent evaporation process to prepare a robust carbon nanotube/Bi0.45Sb1.55Te3 (CNT/BST) foam with a high thermoelectric figure of merit (zT). The BST sub-micronparticles effectively create an electrically conductive network within the three-dimensional porous CNT foam to greatly improve the electrical conductivity and the Seebeck coefficient and reinforce the mechanical strength of the composite against applied stresses. The CNT/BST foam had a zT value of 7.8 × 10−3 at 300 K, which was 5.7 times higher than that of pristine CNT foam. We used the CNT/BST foam to fabricate a flexible TEG with an internal resistance of 12.3 Ω and an output power of 15.7 µW at a temperature difference of 21.8 K. The flexible TEG showed excellent stability and durability even after 10,000 bending cycles. Finally, we demonstrate the shapeability of the CNT/BST foam by fabricating a concave TEG with conformal contact on the surface of a cylindrical glass tube, which suggests its practical applicability as a thermal sensor.","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"7 1","pages":""},"PeriodicalIF":19.5,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.650","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143115176","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}

引用次数: 0

Densely populated single-atom catalysts for boosting hydrogen generation from formic acid

IF 19.5 1区材料科学

Carbon Energy Pub Date : 2024-11-15 DOI: 10.1002/cey2.664

Xiaogeng Zhao, Junmin Wang, Dongnuan Zhang, Yunhui Hao, Xingmian Zhang, Junna Feng, Hong Su, Cheng Feng, Chun Wang

{"title":"Densely populated single-atom catalysts for boosting hydrogen generation from formic acid","authors":"Xiaogeng Zhao, Junmin Wang, Dongnuan Zhang, Yunhui Hao, Xingmian Zhang, Junna Feng, Hong Su, Cheng Feng, Chun Wang","doi":"10.1002/cey2.664","DOIUrl":"https://doi.org/10.1002/cey2.664","url":null,"abstract":"The single-atom M-N-C (M typically being Co or Fe) is a prominent material with exceptional reactivity in areas of catalysis for sustainable energy. However, the formation of metal nanoparticles in M-N-C materials is coupled with high-temperature calcination conditions, limiting the density of M-Nx active sites and thus restricting the catalytic performance of such catalysts. Herein, we describe an effective decoupling strategy to construct high-density M-Nx active sites by generating polyfurfuryl alcohol in the MOF precursor, effectively preventing the formation of metal nanoparticles even with up to 6.377% cobalt loading. This catalyst showed a high H2 production rate of 778 mL gcat−1 h−1 when used in the dehydrogenation reaction of formic acid. In addition to the high density of the active site, a curved carbon surface in the structure is also thought to be the reason for the high performance of the catalyst.","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"7 1","pages":""},"PeriodicalIF":19.5,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.664","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143115530","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}

引用次数: 0

Synergetic monitoring of pressure and temperature stimulations in multisensory electronic skin based on time decoupling effect

IF 19.5 1区材料科学

Carbon Energy Pub Date : 2024-11-14 DOI: 10.1002/cey2.640

Zhiyi Gao, Ye Zhang, Zhenyu Hu, Dongdong Zhang, Shengbin Li, Huiyun Xiao, Ziyin Xiang, Dan Xu, Haifeng Zhang, Yuanzhao Wu, Yiwei Liu, Jie Shang, Runwei Li

{"title":"Synergetic monitoring of pressure and temperature stimulations in multisensory electronic skin based on time decoupling effect","authors":"Zhiyi Gao, Ye Zhang, Zhenyu Hu, Dongdong Zhang, Shengbin Li, Huiyun Xiao, Ziyin Xiang, Dan Xu, Haifeng Zhang, Yuanzhao Wu, Yiwei Liu, Jie Shang, Runwei Li","doi":"10.1002/cey2.640","DOIUrl":"https://doi.org/10.1002/cey2.640","url":null,"abstract":"The progress from intelligent interactions requires electronic skin (E-skin) to shift from single-functional perception to multisensory capabilities. However, the intuitive and interference-free reading of multiple sensory signals without involving complex algorithms is a critical challenge. Herein, we propose a flexible multisensory E-skin by developing a highly homogeneous dispersion of BaTiO3 nanoparticles in polydimethylsiloxane dielectric layer. The E-skin is sensitive to externally applied pressure as well as temperature and can distinguish dual synergetic stimuli by the time decoupling effect. The pressure and temperature perception was achieved in an individual device, which greatly reduced the structural complexity compared with multifunctional integrated devices. The sensitivity of E-skin for pressure detection is as high as 0.0724 kPa−1 and the detection range reaches as wide as 15.625–10 MPa. The sensitivity to temperature detection is as high as −1.34°C−1 and the detection range reaches 20–200°C. More importantly, by equipping with a multilayer neural network, the evolution from tactile perception to advanced intelligent tactile cognition is demonstrated.","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"7 1","pages":""},"PeriodicalIF":19.5,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.640","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143115324","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}

引用次数: 0

Isolated FeN3 sites anchored hierarchical porous carbon nanoboxes for hydrazine-assisted rechargeable Zn-CO2 batteries with ultralow charge voltage

IF 19.5 1区材料科学

Carbon Energy Pub Date : 2024-11-08 DOI: 10.1002/cey2.637

Sanshuang Gao, Hongyi Li, Zhansheng Lu, Songjie Meng, Xue Zhao, Xinzhong Wang, Xijun Liu, Guangzhi Hu

{"title":"Isolated FeN3 sites anchored hierarchical porous carbon nanoboxes for hydrazine-assisted rechargeable Zn-CO2 batteries with ultralow charge voltage","authors":"Sanshuang Gao, Hongyi Li, Zhansheng Lu, Songjie Meng, Xue Zhao, Xinzhong Wang, Xijun Liu, Guangzhi Hu","doi":"10.1002/cey2.637","DOIUrl":"https://doi.org/10.1002/cey2.637","url":null,"abstract":"Zn-CO2 batteries (ZCBs) are promising for CO2 conversion and electric energy release. However, the ZCBs couple the electrochemical CO2 reduction (ECO2R) with the oxygen evolution reaction and competitive hydrogen evolution reaction, which normally causes ultrahigh charge voltage and CO2 conversion efficiency attenuation, thereby resulting in ~90% total power consumption. Herein, isolated FeN3 sites encapsulated in hierarchical porous carbon nanoboxes (Fe-HPCN, derived from the thermal activation process of ferrocene and polydopamine-coated cubic ZIF-8) were proposed for hydrazine-assisted rechargeable ZCBs based on ECO2R (discharging process: CO2 + 2H+ → CO + H2O) and hydrazine oxidation reaction (HzOR, charging process: N2H4 + 4OH− → N2 + 4H2O + 4e−). The isolated FeN3 endows the HzOR with a lower overpotential and boosts the ECO2R with a 96% CO Faraday efficiency (FECO). Benefitting from the bifunctional ECO2R and HzOR catalytic activities, the homemade hydrazine-assisted rechargeable ZCBs assembled with the Fe-HPCN air cathode exhibited an ultralow charge voltage (decreasing by ~1.84 V), excellent CO selectivity (FECO close to 100%), and high 89% energy efficiency. In situ infrared spectroscopy confirmed that Fe-HPCN can generate rate-determining *N2 and *CO intermediates during HzOR and ECO2R. This paper proposes FeN3 centers for bifunctional ECO2R/HzOR performance and further presents the pioneering achievements of ECO2R and HzOR for hydrazine-assisted rechargeable ZCBs.","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"7 1","pages":""},"PeriodicalIF":19.5,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.637","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143113551","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}

引用次数: 0

Modulating the coordination environment of cobalt porphyrins for enhanced electrochemical nitrite reduction to ammonia

IF 19.5 1区材料科学

Carbon Energy Pub Date : 2024-11-08 DOI: 10.1002/cey2.657

Jingwei Han, Hai Sun, Fengkun Tian, Wenwen Zhang, Zonghang Zhang, Ping She, Jun-Sheng Qin, Heng Rao

{"title":"Modulating the coordination environment of cobalt porphyrins for enhanced electrochemical nitrite reduction to ammonia","authors":"Jingwei Han, Hai Sun, Fengkun Tian, Wenwen Zhang, Zonghang Zhang, Ping She, Jun-Sheng Qin, Heng Rao","doi":"10.1002/cey2.657","DOIUrl":"https://doi.org/10.1002/cey2.657","url":null,"abstract":"Electrocatalytic reduction of nitrate pollutants to produce ammonia offers an effective approach to realizing the artificial nitrogen cycle and replacing the energy-intensive Haber-Bosch process. Nitrite is an important intermediate product in the reduction of nitrate to ammonia. Therefore, the mechanism of converting nitrite into ammonia warrants further investigation. Molecular cobalt catalysts are regarded as promising for nitrite reduction reactions (NO2−RR). However, designing and controlling the coordination environment of molecular catalysts is crucial for studying the mechanism of NO2−RR and catalyst design. Herein, we develop a molecular platform of cobalt porphyrin with three coordination microenvironments (Co-N3X1, X = N, O, S). Electrochemical experiments demonstrate that cobalt porphyrin with O coordination (CoOTPP) exhibits the lowest onset potential and the highest activity for NO2−RR in ammonia production. Under neutral, non-buffered conditions over a wide potential range (−1.0 to −1.5 V versus AgCl/Ag), the Faradaic efficiency of nearly 90% for ammonia was achieved and reached 94.5% at −1.4 V versus AgCl/Ag, with an ammonia yield of 6,498 μg h−1 and a turnover number of 22,869 at −1.5 V versus AgCl/Ag. In situ characterization and density functional theory calculations reveal that modulating the coordination environment alters the electron transfer mode of the cobalt active center and the charge redistribution caused by the break of the ligand field. Therefore, this results in enhanced electrochemical activity for NO2−RR in ammonia production. This study provides valuable guidance for designing adjustments to the coordination environment of molecular catalysts to enhance catalytic activity.","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"7 1","pages":""},"PeriodicalIF":19.5,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.657","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143113171","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}

引用次数: 0

Back Cover Image, Volume 6, Number 10, October 2024 封底图片，第 6 卷第 10 号，2024 年 10 月

IF 19.5 1区材料科学

Carbon Energy Pub Date : 2024-10-25 DOI: 10.1002/cey2.688

Qihang Ding, Zewen Jiang, Kean Chen, Hui Li, Jingzhe Shi, Xinping Ai, Dingguo Xia

引用次数: 0

Cover Image, Volume 6, Number 10, October 2024 封面图片，第 6 卷第 10 号，2024 年 10 月

IF 19.5 1区材料科学

Carbon Energy Pub Date : 2024-10-25 DOI: 10.1002/cey2.687

Li-Feng Zhou, Jia-Yang Li, Jian Peng, Li-Ying Liu, Hang Zhang, Yi-Song Wang, Yameng Fan, Jia-Zhao Wang, Tao Du

引用次数: 0

Interface and doping engineering of V2C-MXene-based electrocatalysts for enhanced electrocatalysis of overall water splitting 基于 V2C-MXene 的电催化剂的界面和掺杂工程，以增强整体水分离的电催化性能

IF 19.5 1区材料科学

Carbon Energy Pub Date : 2024-10-23 DOI: 10.1002/cey2.583

Yousen Wu, Jinlong Li, Guozhe Sui, Dong-Feng Chai, Yue Li, Dongxuan Guo, Dawei Chu, Kun Liang

{"title":"Interface and doping engineering of V2C-MXene-based electrocatalysts for enhanced electrocatalysis of overall water splitting","authors":"Yousen Wu, Jinlong Li, Guozhe Sui, Dong-Feng Chai, Yue Li, Dongxuan Guo, Dawei Chu, Kun Liang","doi":"10.1002/cey2.583","DOIUrl":"https://doi.org/10.1002/cey2.583","url":null,"abstract":"The restacking and oxidizable nature of vanadium-based carbon/nitride (V2C-MXene) poses a significant challenge. Herein, tellurium (Te)-doped V2C/V2O3 electrocatalyst is constructed via mild H2O2 oxidation and calcination treatments. Especially, this work rationally exploits the inherent easy oxidation characteristic associated with MXene to alter the interfacial information, thereby obtaining stable self-generated vanadium-based heterointerfaces. Meanwhile, the microetching effect of H2O2 creates numerous pores to address the restacking issues. Besides, Te element doping settles the issue of awkward levels of absorption/desorption ability of intermediates. The electrocatalyst obtains an unparalleled hydrogen evolution reaction and oxygen evolution reaction with the overpotential of 83.5 and 279.8 mV at −10 and 10 mA cm−2, respectively. In addition, the overall water-splitting device demonstrates a low cell voltage of 1.41 V to obtain 10 mA cm−2. Overall, the inherent drawbacks of MXene can be turned into benefits based on the planning strategy to create these electrocatalysts with desirable reaction kinetics.","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"6 10","pages":""},"PeriodicalIF":19.5,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.583","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142525007","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}

引用次数: 0

Progress and prospect of flexible MXene-based energy storage

IF 19.5 1区材料科学

Carbon Energy Pub Date : 2024-10-21 DOI: 10.1002/cey2.639

Hongxin Yuan, Jianxin Hua, Wei Wei, Miao Zhang, Yue Hao, Jingjing Chang

引用次数: 0

Proton exchange membrane-based electrocatalytic systems for hydrogen production

IF 19.5 1区材料科学

Carbon Energy Pub Date : 2024-10-21 DOI: 10.1002/cey2.629

Yangyang Zhou, Hongjing Zhong, Shanhu Chen, Guobin Wen, Liang Shen, Yanyong Wang, Ru Chen, Li Tao, Shuangyin Wang

{"title":"Proton exchange membrane-based electrocatalytic systems for hydrogen production","authors":"Yangyang Zhou, Hongjing Zhong, Shanhu Chen, Guobin Wen, Liang Shen, Yanyong Wang, Ru Chen, Li Tao, Shuangyin Wang","doi":"10.1002/cey2.629","DOIUrl":"https://doi.org/10.1002/cey2.629","url":null,"abstract":"Hydrogen energy from electrocatalysis driven by sustainable energy has emerged as a solution against the background of carbon neutrality. Proton exchange membrane (PEM)-based electrocatalytic systems represent a promising technology for hydrogen production, which is equipped to combine efficiently with intermittent electricity from renewable energy sources. In this review, PEM-based electrocatalytic systems for H2 production are summarized systematically from low to high operating temperature systems. When the operating temperature is below 130°C, the representative device is a PEM water electrolyzer; its core components and respective functions, research status, and design strategies of key materials especially in electrocatalysts are presented and discussed. However, strong acidity, highly oxidative operating conditions, and the sluggish kinetics of the anode reaction of PEM water electrolyzers have limited their further development and shifted our attention to higher operating temperature PEM systems. Increasing the temperature of PEM-based electrocatalytic systems can cause an increase in current density, accelerate reaction kinetics and gas transport and reduce the ohmic value, activation losses, ΔGH*, and power consumption. Moreover, further increasing the operating temperature (120–300°C) of PEM-based devices endows various hydrogen carriers (e.g., methanol, ethanol, and ammonia) with electrolysis, offering a new opportunity to produce hydrogen using PEM-based electrocatalytic systems. Finally, several future directions and prospects for developing PEM-based electrocatalytic systems for H2 production are proposed through devoting more efforts to the key components of devices and reduction of costs.","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"7 1","pages":""},"PeriodicalIF":19.5,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.629","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143117955","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}

引用次数: 0