Journal of Energy Chemistry最新文献_第10页

Efficient flexible perovskite solar cells: from materials to buried structure revealed by synchrotron radiation GIWAXS

IF 13.1 1区化学

Journal of Energy Chemistry Pub Date : 2025-01-09 DOI: 10.1016/j.jechem.2024.11.078

Xiaoxi Li , Tingting Wang , Lifeng Yang , Bitao Dong , Yuchun Li , Laixi Li , Lina Li , Shanglei Feng , Gengsheng Chen , Yingguo Yang

{"title":"Efficient flexible perovskite solar cells: from materials to buried structure revealed by synchrotron radiation GIWAXS","authors":"Xiaoxi Li , Tingting Wang , Lifeng Yang , Bitao Dong , Yuchun Li , Laixi Li , Lina Li , Shanglei Feng , Gengsheng Chen , Yingguo Yang","doi":"10.1016/j.jechem.2024.11.078","DOIUrl":"10.1016/j.jechem.2024.11.078","url":null,"abstract":"<div><div>Perovskite solar cells (PSC) are considered as a promising photovoltaic technology due to their low cost and high efficiency exceeding 26.8%. Ultra-lightweight flexible perovskite solar cells (FPSCs) can be applied to many fields such as architecture and portable devices. Although the photovoltaic conversion efficiency (PCE) of FPSC has exceeded 24% in the past few years, further application of FPSC is constrained by the challenges posed by limitation of critical material components. Here, we discussed recent research progress of key FPSC materials, mechanical endurance, low-temperature fabrication, etc. With the advantages of high brightness, collimation and resolution, we specially introduced the application of synchrotron radiation grazing incidence wide-angle X-ray scattering (GIWAXS) to directly observe the perovskite buried interface structure and corresponding mechanical stability of FPSCs without any damage. Finally, we summarize the challenges and propose an outlook about the large-scale preparation of efficient and stable FPSC modules.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"104 ","pages":"Pages 254-267"},"PeriodicalIF":13.1,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143139159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A lithium carbonate-based additive for the interfacial stabilization of LiCoO2 cathode at 4.6 V

IF 13.1 1区化学

Journal of Energy Chemistry Pub Date : 2025-01-08 DOI: 10.1016/j.jechem.2024.12.046

Zhen Wang , Jun-Ke Liu , Li Deng , Jian Liu , Zhi-Liang Jin , Yu-Xi Luo , Guo-Dong Bai , Wen-Jing Sun , Gao-Yang Bai , Jing-Yi Lin , Zu-Wei Yin , Yao Zhou , Jun-Tao Li

{"title":"A lithium carbonate-based additive for the interfacial stabilization of LiCoO2 cathode at 4.6 V","authors":"Zhen Wang , Jun-Ke Liu , Li Deng , Jian Liu , Zhi-Liang Jin , Yu-Xi Luo , Guo-Dong Bai , Wen-Jing Sun , Gao-Yang Bai , Jing-Yi Lin , Zu-Wei Yin , Yao Zhou , Jun-Tao Li","doi":"10.1016/j.jechem.2024.12.046","DOIUrl":"10.1016/j.jechem.2024.12.046","url":null,"abstract":"<div><div>Extending the charging voltage of LiCoO<sub>2</sub> (LCO) is anongoing and promising approach to increase its energy density. However, the main challenge of the approach lies in the insuperable cathodic interfacial processes at high voltage, which leads to rapid failure both in the performance and structure of the LCO cathode. Herein, a Li<sub>2</sub>CO<sub>3</sub>-based additive was prepared by a simple sand-milling method, enabling a low electrochemical decomposition voltage <4.6 V from commonly >4.8 V, stabilizing the interface of the LCO cathode at 4.6 V. The decomposition of Li<sub>2</sub>CO<sub>3</sub> provides extra Li<sup>+</sup> and CO<sub>2</sub> to supplement the Li consumption required in the initial irreversible interfacial reactions and rapidly form a uniform and stable cathode electrolyte interphase layer (less organic and more inorganic components) on the LCO cathode by reducing CO<sub>2</sub>. Thus, the phase transformation and the emergence of high-valent Co ions on the surface of LCO at 4.6 V high voltage were inhibited. Thanks to this, with 2% Li<sub>2</sub>CO<sub>3</sub>-based additive, the capacity retention of commercial LCO at a high voltage of 4.6 V at 0.5 C for 100 cycles was improved from 59.3% to 79.3%. This work improves the high-voltage stability of LCO and provides a new idea for realizing the high-voltage operation of batteries.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"104 ","pages":"Pages 404-413"},"PeriodicalIF":13.1,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143138200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-voltage MIM-type aluminum electrolytic capacitors

IF 13.1 1区化学

Journal of Energy Chemistry Pub Date : 2025-01-08 DOI: 10.1016/j.jechem.2024.12.049

Yuan Guo, Shixin Wang, Xianfeng Du, Xinkuan Zang, Zhongshuai Liang, Jun Xiong, Ruizhi Wang, Zhuo Li

{"title":"High-voltage MIM-type aluminum electrolytic capacitors","authors":"Yuan Guo, Shixin Wang, Xianfeng Du, Xinkuan Zang, Zhongshuai Liang, Jun Xiong, Ruizhi Wang, Zhuo Li","doi":"10.1016/j.jechem.2024.12.049","DOIUrl":"10.1016/j.jechem.2024.12.049","url":null,"abstract":"<div><div>Metal-insulator-metal aluminium electrolytic capacitors (MIM-AECs) combine 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, interfacial atomic diffusion poses a major obstacle, preventing the high-voltage MIM-AECs exploitation and thereby hampering their potential and advantages in high-power and high-energy-density applications. Here, an innovative high-voltage MIM-AECs were fabricated. The AlPO<sub>4</sub> buffer layer is formed on AlO(OH)/AAO/Al surface by using H<sub>3</sub>PO<sub>4</sub> treatment, then a stable van der Waals (vdW) SnO<sub>2</sub>/AlPO<sub>4</sub>/AAO/Al multilayer was constructed via atomic layer deposition (ALD) technology. Due to higher diffusion barrier and lower carrier migration of SnO<sub>2</sub>/AlPO<sub>4</sub>/AAO interfaces, Sn atom diffusion is inhibited and carrier acceleration by electric field is weakened, guaranteeing high breakdown field strength of dielectric AAO and avoiding local breakdown risks. Through partial etching to hydrated AlO(OH) by H<sub>3</sub>PO<sub>4</sub> treatment, the tunnel was further opened up to facilitate subsequent ALD-SnO<sub>2</sub> entry, thus obtaining a high SnO<sub>2</sub> coverage. The SnO<sub>2</sub>/AlPO<sub>4</sub>/AAO/Al capacitors show a comprehensive performance in high-voltage (260 V), high-temperature (335 °C), high-humidity (100% RH) and high-frequency response (100 kHz), outperforming commercial solid-state AECs, and high-energy density (8.6 µWh/cm<sup>2</sup>), markedly exceeding previously reported MIM capacitors. The work lays the foundation for next-generation capacitors with high-voltage, high-frequency, high-temperature and high-humidity resistance.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"104 ","pages":"Pages 79-90"},"PeriodicalIF":13.1,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143139023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Regulating the mechano-electrochemistry of graphite-silicon hybrid anode through layered electrode structure design

IF 13.1 1区化学

Journal of Energy Chemistry Pub Date : 2025-01-08 DOI: 10.1016/j.jechem.2024.12.048

Chunhao Li , Jing Wang , Xiancheng Wang , Zihe Chen , Renming Zhan , Xiangrui Duan , Xuerui Liu , Kai Cheng , Zhao Cai , Li Wang , Yongming Sun

{"title":"Regulating the mechano-electrochemistry of graphite-silicon hybrid anode through layered electrode structure design","authors":"Chunhao Li , Jing Wang , Xiancheng Wang , Zihe Chen , Renming Zhan , Xiangrui Duan , Xuerui Liu , Kai Cheng , Zhao Cai , Li Wang , Yongming Sun","doi":"10.1016/j.jechem.2024.12.048","DOIUrl":"10.1016/j.jechem.2024.12.048","url":null,"abstract":"<div><div>Graphite-silicon species (Gr-Si) hybrid anodes have merged as potential candidates for high-energy lithium-ion batteries (LIBs), yet long been plagued by rapid capacity fading due to their unstable mechano-electrochemistry. The dominant approach to enhance electrochemical stability of the Gr-Si hybrid anodes typically involves the optimization of the electrode material structures and the employment of low active Si species content in electrode (<10 wt% in most instances). However, the electrode structure design, a factor of equal importance in determining the electrochemical performance of Gr-Si hybrid anodes, has received scant attention. In this study, three Gr-Si hybrid anodes with the identical material composition but distinct electrode structures are designed to investigate the mechano-electrochemistry of the electrodes. It is revealed that the substantial volume change of Si species particles in Gr-Si hybrid anodes led to the local lattice stress of Gr at their contact interface during the charge/discharge processes, thereby increasing thermodynamic and kinetic barrier of Li-ion migration. Furthermore, the huge disparity in volume change of Si species and Gr particles trigger the separate agglomeration of these two materials, resulting in a considerable electrode volume change and increased electrochemical resistance. An advanced Gr/Si hybrid anode with upper Gr and lower Si species layer structure design addresses the above challenges using photovoltaic waste silicon sources under high Si species content (17 wt%) and areal capacity (2.0 mA h cm<sup>−2</sup>) in Ah-level full pouch cells with a low negative/positive (N/P) ratio of 1.09. The cell shows stable cycling for 100 cycles at 0.3 <em>C</em> with an impressively low capacity decay rate of 0.0546% per cycle, outperforming most reported Gr-Si hybrid anodes.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"104 ","pages":"Pages 176-184"},"PeriodicalIF":13.1,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143139028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent progress in photothermal-catalysis: the pivotal impact factors and various applications from energy to environment

IF 13.1 1区化学

Journal of Energy Chemistry Pub Date : 2025-01-08 DOI: 10.1016/j.jechem.2024.12.045

Yongqian Cui , Xinxin Liang , Jingyi Wang , Nitish Kumar , Jinhua Sun , Chuanyi Wang

{"title":"Recent progress in photothermal-catalysis: the pivotal impact factors and various applications from energy to environment","authors":"Yongqian Cui , Xinxin Liang , Jingyi Wang , Nitish Kumar , Jinhua Sun , Chuanyi Wang","doi":"10.1016/j.jechem.2024.12.045","DOIUrl":"10.1016/j.jechem.2024.12.045","url":null,"abstract":"<div><div>Photothermal catalysis is a synergetic process where photocatalysis and thermal catalysis work together to promote catalytic reactions, which compensates for the critical shortcomings of photocatalysis and thermal catalysis, achieving an effect of 1 + 1 > 2. Previous reviews have summarized the mechanism of photothermal catalysis and its specific application in certain fields, but few have systematically analyzed the essential factors affecting the activity of photothermal catalysis, or provided a comprehensive summary of its application fields. In this review, the superiority of photothermal catalysis over individual photocatalysis and thermal catalysis will be comprehensively discussed with the aim to emphasize the importance of developing photothermal catalysis. After elucidating the basic mechanism of photothermal catalysis, an ample discussion on the factors influencing the catalytic activity of photothermal materials is provided from the following three perspectives: morphology, localized surface plasmon resonance, and defective structure of photothermal materials. Subsequently, this review summarizes the broad applications of photothermal catalysis in environmental management and energy conversion. Finally, this review discusses the challenges encountered in photothermal catalysis technology and proposes directions for future development. It provides new perspectives and a profound understanding of photothermal materials in photothermal environmental governance and energy conversion.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"103 ","pages":"Pages 888-910"},"PeriodicalIF":13.1,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143129714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Review on high-temperature macroencapsulated phase change materials: Encapsulation strategy, thermal storage system, and optimization

IF 13.1 1区化学

Journal of Energy Chemistry Pub Date : 2025-01-08 DOI: 10.1016/j.jechem.2024.12.052

Yi Yang, Xiaojie Guo, Meng Liu, Hang Yang, Deqiu Zou

{"title":"Review on high-temperature macroencapsulated phase change materials: Encapsulation strategy, thermal storage system, and optimization","authors":"Yi Yang, Xiaojie Guo, Meng Liu, Hang Yang, Deqiu Zou","doi":"10.1016/j.jechem.2024.12.052","DOIUrl":"10.1016/j.jechem.2024.12.052","url":null,"abstract":"<div><div>High-temperature phase change materials (PCMs) have attracted significant attention in the field of thermal energy storage due to their ability to store and release large amounts of heat within a small temperature fluctuation range. However, their practical application is limited due to problems such as leakage, corrosion, and volume changes at high temperatures. Recent research has shown that macroencapsulation technology holds promise in addressing these issues. This paper focuses on the macroencapsulation technology of high-temperature PCMs, starting with a review of the classification and development history of high-temperature macroencapsulatd PCMs. Four major encapsulation strategies, including electroplating method, solid/liquid filling method, sacrificial material method, and powder compaction into sphere method, are then summarized. The methods for effectively addressing issues such as corrosion, leakage, supercooling, and phase separation in PCMs are analyzed, along with approaches for improving the heat transfer performance, mechanical strength, and thermal cycling stability of macrocapsules. Subsequently, the structure and packing arrangement optimization of macrocapsules in thermal storage systems is discussed in detail. Finally, after comparing the performance of various encapsulation strategies and summarizing existing issues, the current technical challenges, improvement methods, and future development directions are proposed. More attention should be given to utilizing AI technology and reinforcement learning to reveal the multiphysics-coupled heat and mass transfer mechanisms in macrocapsule applications, as well as to optimize material selection and encapsulation parameters, thereby enhancing the overall efficiency of thermal storage systems.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"104 ","pages":"Pages 324-359"},"PeriodicalIF":13.1,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143139163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Revealing cycling and thermal safety characteristics of LiFePO4 solid-state lithium metal batteries under dual in-situ strategy

IF 13.1 1区化学

Journal of Energy Chemistry Pub Date : 2025-01-08 DOI: 10.1016/j.jechem.2024.12.050

Yue Zhang, Yuxuan Li, Anqi Teng, Lihua Jiang, Zhuangzhuang Jia, Wenxin Mei, Yong Liu, Shiyao Chen, Zesen Wei, Kaiqiang Jin, Qiangling Duan, Qingsong Wang, Jinhua Sun

{"title":"Revealing cycling and thermal safety characteristics of LiFePO4 solid-state lithium metal batteries under dual in-situ strategy","authors":"Yue Zhang, Yuxuan Li, Anqi Teng, Lihua Jiang, Zhuangzhuang Jia, Wenxin Mei, Yong Liu, Shiyao Chen, Zesen Wei, Kaiqiang Jin, Qiangling Duan, Qingsong Wang, Jinhua Sun","doi":"10.1016/j.jechem.2024.12.050","DOIUrl":"10.1016/j.jechem.2024.12.050","url":null,"abstract":"<div><div>Solid-state battery (SSB) with lithium metal anode (LMA) is considered as one of the most promising storage devices for the next generation. To simultaneously address two critical issues in lithium metal batteries: the negative impact of interfacial compatibility on the electrochemical performance and the safety risks associated with Li dendrite growth—we propose a dual in-situ strategy for fabricating SSBs. Herein, the excellent cycling performance and improved safety of polymer SSB under dual in-situ strategy was confirmed. The lower Li nucleation barrier of Sn leads to uniform Li deposition on the modified-Li (ModLi)/solid-state electrolyte (SSE) interface. LiF-enriched layer on LMA contributes to capacity retention of 92% after 550 cycles in LiFePO<sub>4</sub> SSB. The modified layer provides outstanding dendrite suppression ability under an overcharge condition of 5.5 V. The higher thermal stability of SSE than liquid electrolyte was investigated through in-situ heat and gas generation analysis, with ModLi + SSE generating only 9.9% of Li + SSE. Higher cycling stability of SSB was demonstrated through in-situ cycling heat generation analysis, and lower temperature sensitivity of SSB with 31% of heat production decrease from 30 to 70 °C, while LIBs show a 54% reduction. Excellent high-temperature stability was proved by a 92% capacity retention at 60 °C after 50 cycles. Ultimately, pouch cells with SSE of higher thermal stability and modifications on LMA achieved a higher self-heating onset temperature (<em>T</em><sub>onset</sub>) of 180 °C and a lower thermal runaway maximum temperature (<em>T</em><sub>max</sub>) of 401 °C. The impacts of dual in-situ strategy for materials, interfaces, coin cells and pouch cells aid in further understanding on thermal runaway mechanism of SSB.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"103 ","pages":"Pages 911-925"},"PeriodicalIF":13.1,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143129751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nonflammable electrolyte with weak-solvation structure for stable NCM811 cathode under high temperature

IF 13.1 1区化学

Journal of Energy Chemistry Pub Date : 2025-01-08 DOI: 10.1016/j.jechem.2024.12.051

Dawei Xu , Chao Yang , Ailing Yang , Xiaowei Liu , Meilong Wang , Jin Han , Tiefeng Liu , Ya You

{"title":"Nonflammable electrolyte with weak-solvation structure for stable NCM811 cathode under high temperature","authors":"Dawei Xu , Chao Yang , Ailing Yang , Xiaowei Liu , Meilong Wang , Jin Han , Tiefeng Liu , Ya You","doi":"10.1016/j.jechem.2024.12.051","DOIUrl":"10.1016/j.jechem.2024.12.051","url":null,"abstract":"<div><div>High-nickel cathode LiNi<sub>0.8</sub>Co<sub>0.1</sub>Mn<sub>0.1</sub>O<sub>2</sub> (NCM811) could enable lithium-ion batteries (LIBs) with high energy density. However, excessive decomposition of the electrolyte would happen in the high operating voltage range. In addition, the utilization of flammable organic solvents would increase safety risks in the high temperature environment. Herein, an electrolyte consisting of flame-retardant solvents with lower highest occupied molecular orbital (HOMO) level and LiDFOB salt is proposed to address above two issues. As a result, a thin and robust cathode-electrolyte interface containing rich LiF and Li-B-O compounds is formed on the cathode to effectively suppress electrolyte decomposition in the high operating voltage. The NCM811||Li cell paired with this designed electrolyte possesses a capacity retention of 72% after 300 cycles at 55 ℃. This work provides insights into developing electrolyte for stable high-nickel cathode operated in the high temperature.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"104 ","pages":"Pages 111-117"},"PeriodicalIF":13.1,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143139042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pyridine-nitrogen conjugated covalent organic frameworks for high-efficiency gas-solid photocatalytic reduction of CO2 to CO

IF 13.1 1区化学

Journal of Energy Chemistry Pub Date : 2025-01-08 DOI: 10.1016/j.jechem.2024.12.044

Haicheng Jiang , Chi Cao , Wei Liu , Hao Zhang , Qianyu Li , Siyuan Zhu , Xiaoning Li , Jinshuo Li , Jinfa Chang , Wei Hu , Zihao Xing , Xiaoqin Zou , Guangshan Zhu

{"title":"Pyridine-nitrogen conjugated covalent organic frameworks for high-efficiency gas-solid photocatalytic reduction of CO2 to CO","authors":"Haicheng Jiang , Chi Cao , Wei Liu , Hao Zhang , Qianyu Li , Siyuan Zhu , Xiaoning Li , Jinshuo Li , Jinfa Chang , Wei Hu , Zihao Xing , Xiaoqin Zou , Guangshan Zhu","doi":"10.1016/j.jechem.2024.12.044","DOIUrl":"10.1016/j.jechem.2024.12.044","url":null,"abstract":"<div><div>The light-driven CO<sub>2</sub> reduction reaction (CO<sub>2</sub>RR) to CO is a very effective way to address global warming. To avoid competition with water photolysis, metal-free gas-solid CO<sub>2</sub>RR catalysts should be investigated. Covalent organic frameworks (COFs) offer a promising approach for CO<sub>2</sub> transformation but lack high efficiency and selectivity in the absence of metals. Here, we have incorporated a pyridine nitrogen component into the imine-COF conjugated structure (TpPym). This innovative system has set a record of producing a CO yield of 1565 µmol g<sup>−1</sup> within 6 h. The soft X-ray absorption fine structure measurement proves that TpPym has both better conjugation and electron cloud enrichment. The electronic structure distribution delays the charge-carrier recombination, as evidenced by femtosecond transient absorption spectroscopy. The energy band diagram and theoretical calculation show that the conduction-band potential of TpPym is lower and the reduction reaction of CO<sub>2</sub> to CO is more likely to occur.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"104 ","pages":"Pages 127-135"},"PeriodicalIF":13.1,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143139044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Flame-retardant cross-linked sp3 boron-based single-ion conductor polymer electrolyte for high-safety lithium metal batteries

IF 13.1 1区化学

Journal of Energy Chemistry Pub Date : 2025-01-07 DOI: 10.1016/j.jechem.2024.12.043

Lingfeng Huang , Zexian Zhang , Sheng Huang , Shuanjin Wang , Dongmei Han , Hui Guo , Min Xiao , Yuezhong Meng

{"title":"Flame-retardant cross-linked sp3 boron-based single-ion conductor polymer electrolyte for high-safety lithium metal batteries","authors":"Lingfeng Huang , Zexian Zhang , Sheng Huang , Shuanjin Wang , Dongmei Han , Hui Guo , Min Xiao , Yuezhong Meng","doi":"10.1016/j.jechem.2024.12.043","DOIUrl":"10.1016/j.jechem.2024.12.043","url":null,"abstract":"<div><div>Single ion gel polymer electrolyte has the advantages of high Li<sup>+</sup> conductivity and dendrite mitigation. However, the addition of organic solvent makes the electrolyte flammable, posing serious safety hazards. Herein, we report a flame-retardant cross-linked sp<sup>3</sup> boron-based single-ion gel polymer electrolyte (BSIPE). BSIPE was prepared by a simple one-step photoinitiated in situ thiol-ene click reaction. Due to the boron-based anions being immobilized in the cross-linking network, the developed BSIPE/PFN exhibits a high <span><math><mrow><msub><mi>t</mi><msup><mrow><mi>Li</mi></mrow><mo>+</mo></msup></msub></mrow></math></span> (0.87), which can mitigate concentration polarization phenomenon and suppress the growth of lithium dendrites. BSIPE/PFN plasticized with triethyl phosphate (TEP), fluoroethylene carbonate (FEC) and LiNO<sub>3</sub> exhibits enhanced ionic conductivity of 4.25 × 10<sup>−4</sup> S cm<sup>−1</sup> at 30 °C and flame retardancy. FEC and LiNO<sub>3</sub> are conducive to form a stable solid electrolyte interphase (SEI) rich in Li<sub>3</sub>N and LiF to improve interface stability. As expected, the dendrite-free Li||BSIPE/PFN||Li symmetric cell exhibits considerable cycling life over 1500 h. BSIPE/PFN significantly boosts the performance of LFP||Li cell, which displays a capacity retention of 84.6% after 500 cycles. The BSIPE/PFN has promising applications in high-safety and high-performance lithium metal batteries.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"104 ","pages":"Pages 101-110"},"PeriodicalIF":13.1,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143139027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0