eScience最新文献_第7页

Synergistic effect of oxygen species and vacancy for enhanced electrochemical CO2 conversion to formate on indium oxide 氧化铟上氧物种和空位对增强二氧化碳转化为甲酸盐的电化学作用的协同效应

eScience Pub Date : 2024-06-01 DOI: 10.1016/j.esci.2024.100246

Tengfei Ma , Zihao Jiao , Haoran Qiu , Feng Wang, Ya Liu, Liejin Guo

{"title":"Synergistic effect of oxygen species and vacancy for enhanced electrochemical CO2 conversion to formate on indium oxide","authors":"Tengfei Ma , Zihao Jiao , Haoran Qiu , Feng Wang, Ya Liu, Liejin Guo","doi":"10.1016/j.esci.2024.100246","DOIUrl":"10.1016/j.esci.2024.100246","url":null,"abstract":"<div>Indium-based oxides are promising electrocatalysts for producing formate via CO2 reduction reaction, in which ∗OCHO is considered the key intermediate. Here, we identified that the ∗COOH pathway could be preferential to produce formate on In2O3 of In/In2O3 heterojunction due to the synergistic effect of oxygen species and vacancy. Specifically, ∗CO2 and ∗COOH were observed on In2O3 and related to formate production by in situ Raman spectroscopy. The theoretical calculations further demonstrated that the energy barrier of the ∗COOH formation on In2O3 was decreased in the presence of oxygen vacancy, similar to or lower than that of the ∗OCHO formation on the In surface. As a result, a formate selectivity of over 90% was obtained on prepared In/In2O3 heterojunction with 343 ± 7 mA cm−2 partial current density. Furthermore, when using a Si-based photovoltaic as an energy supplier, 10.11% solar–to–fuel energy efficiency was achieved.</div>","PeriodicalId":100489,"journal":{"name":"eScience","volume":"4 3","pages":"Article 100246"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667141724000259/pdfft?md5=b5d9ca7861e20f0d229e8e7010ee898c&pid=1-s2.0-S2667141724000259-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139668121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unlocking the potential of silicon anodes in lithium-ion batteries: A claw-inspired binder with synergistic interface bonding 释放硅阳极在锂离子电池中的潜力：具有协同界面键合作用的爪启发粘合剂

eScience Pub Date : 2024-06-01 DOI: 10.1016/j.esci.2023.100207

Jun Shen , Shilin Zhang , Haoli Wang , Renxin Wang , Yingying Hu , Yiyang Mao , Ruilin Wang , Huihui Zhang , Yumeng Du , Yameng Fan , Yingtang Zhou , Zaiping Guo , Baofeng Wang

{"title":"Unlocking the potential of silicon anodes in lithium-ion batteries: A claw-inspired binder with synergistic interface bonding","authors":"Jun Shen , Shilin Zhang , Haoli Wang , Renxin Wang , Yingying Hu , Yiyang Mao , Ruilin Wang , Huihui Zhang , Yumeng Du , Yameng Fan , Yingtang Zhou , Zaiping Guo , Baofeng Wang","doi":"10.1016/j.esci.2023.100207","DOIUrl":"10.1016/j.esci.2023.100207","url":null,"abstract":"<div>Binders play a crucial role in enhancing the cycling stability of silicon anodes in next-generation Li-ion batteries. However, traditional linear polymer binders have difficulty withstanding the volume expansion of silicon during cycling. Herein, inspired by the fact that animals’ claws can grasp objects firmly, a claw-like taurine-grafted-poly (acrylic acid) binder (Tau-g-PAA) is designed to improve the electrochemical performance of silicon anodes. The synergistic effects of different polar groups (sulfo and carboxyl) in Tau-g-PAA facilitate the formation of multidimensional interactions with silicon nanoparticles and the diffusion of Li ions, thereby greatly improving the stability and rate performance of silicon anodes, which aligns with results from density functional theory (DFT) simulations. As expected, a Tau-g-PAA/Si electrode exhibits excellent cycling performance with a high specific capacity of 1003 mA h g−1 at 1 C (1 C = 4200 mA h g−1) after 300 cycles, and a high rate performance. The design strategy of using polar small molecule-grafted polymers to create claw-like structures could inspire the development of better binders for silicon-based anodes.</div>","PeriodicalId":100489,"journal":{"name":"eScience","volume":"4 3","pages":"Article 100207"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667141723001532/pdfft?md5=2a5d850efe52e6935ff0d1d0541f4a19&pid=1-s2.0-S2667141723001532-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136128020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Revitalizing sodium-ion batteries via controllable microstructures and advanced electrolytes for hard carbon 通过硬碳的可控微结构和先进电解质振兴钠离子电池

eScience Pub Date : 2024-06-01 DOI: 10.1016/j.esci.2023.100181

Feng Wang , Zhenming Jiang , Yanyan Zhang , Yanlei Zhang , Jidao Li , Huibo Wang , Yinzhu Jiang , Guichuan Xing , Hongchao Liu , Yuxin Tang

{"title":"Revitalizing sodium-ion batteries via controllable microstructures and advanced electrolytes for hard carbon","authors":"Feng Wang , Zhenming Jiang , Yanyan Zhang , Yanlei Zhang , Jidao Li , Huibo Wang , Yinzhu Jiang , Guichuan Xing , Hongchao Liu , Yuxin Tang","doi":"10.1016/j.esci.2023.100181","DOIUrl":"10.1016/j.esci.2023.100181","url":null,"abstract":"<div>Sodium-ion batteries (SIBs) with low cost and high safety are considered as an electrochemical energy storage technology suitable for large-scale energy storage. Hard carbon, which is inexpensive and has both high capacity and low sodium storage potential, is regarded as the most promising anode for commercial SIBs. However, the commercialization of hard carbon still faces technical issues of low initial Coulombic efficiency, poor rate performance, and insufficient cycling stability, due to the intrinsically irregular microstructure of hard carbon. To address these challenges, the rational design of the hard carbon microstructure is crucial for achieving high-performance SIBs, via gaining an in-depth understanding of its structure–performance correlations. In this context, our review firstly describes the sodium storage mechanism from the perspective of the hard carbon microstructure's formation. We then summarize the state-of-art development of hard carbon, providing a critical overview of emergence of hard carbon in terms of precursor selection, microstructure design, and electrolyte regulation to optimize strategies for addressing practical problems. Finally, we highlight directions for the future development of hard carbon to achieve the commercialization of high-performance SIBs. We believe this review will serve as basic guidance for the rational design of hard carbon and stimulate more exciting research into other types of energy storage devices.</div>","PeriodicalId":100489,"journal":{"name":"eScience","volume":"4 3","pages":"Article 100181"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667141723001210/pdfft?md5=8af1415a0a6cdaed9b8772ad8ae07019&pid=1-s2.0-S2667141723001210-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82602291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent advances in rare earth compounds for lithium–sulfur batteries 锂硫电池用稀土化合物的最新进展

eScience Pub Date : 2024-06-01 DOI: 10.1016/j.esci.2023.100180

Bixia Lin , Yuanyuan Zhang , Weifeng Li , Junkang Huang , Yong Yang , Siu Wing Or , Zhenyu Xing , Shaojun Guo

{"title":"Recent advances in rare earth compounds for lithium–sulfur batteries","authors":"Bixia Lin , Yuanyuan Zhang , Weifeng Li , Junkang Huang , Yong Yang , Siu Wing Or , Zhenyu Xing , Shaojun Guo","doi":"10.1016/j.esci.2023.100180","DOIUrl":"10.1016/j.esci.2023.100180","url":null,"abstract":"<div>Lithium–sulfur batteries are considered potential high-energy-density candidates to replace current lithium-ion batteries. However, several problems remain to be solved, including low conductivity, huge volume change, and a severe shuttle effect on the cathode side, as well as inevitable lithium dendrites on the anode side. Rare earth compounds, which play vital roles in various industries, show latent capacity as cathode hosts or interlayers to tackle the inherent problems of lithium–sulfur batteries. However, the application of rare earth compounds in lithium–sulfur batteries has not been reviewed so far, despite they showing obvious advantages for tuning polysulfide retention and conversion. In this mini-review, we start by introducing the concept of lithium–sulfur batteries and providing background information on rare earth-based materials. In the main body, we explore rare earth compounds as cathode hosts or interlayers, then discuss various types of each. Finally, we offer an outlook on the existing challenges and possible opportunities for using rare earth compounds as cathode hosts or interlayers for lithium–sulfur batteries.</div>","PeriodicalId":100489,"journal":{"name":"eScience","volume":"4 3","pages":"Article 100180"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667141723001209/pdfft?md5=27acbe1138a9e54747d8b31bc8b0cb39&pid=1-s2.0-S2667141723001209-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88167287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Defects in photoreduction reactions: Fundamentals, classification, and catalytic energy conversion 光还原反应中的缺陷：基础、分类和催化能量转换

eScience Pub Date : 2024-06-01 DOI: 10.1016/j.esci.2024.100228

Yinghui Wang , Wenying Yu , Chunyang Wang , Fang Chen , Tianyi Ma , Hongwei Huang

{"title":"Defects in photoreduction reactions: Fundamentals, classification, and catalytic energy conversion","authors":"Yinghui Wang , Wenying Yu , Chunyang Wang , Fang Chen , Tianyi Ma , Hongwei Huang","doi":"10.1016/j.esci.2024.100228","DOIUrl":"10.1016/j.esci.2024.100228","url":null,"abstract":"<div>Powered by optical energy, photocatalytic reduction for fuel production promises to be an ideal long-term solution to a number of key energy challenges. Photocatalysts with enhanced light absorption, fast electron/hole separation rates, and exposed activity sites are essential to improve photocatalytic efficiency. Semiconductors are constrained by their own intrinsic properties and have limited performance in photocatalysis, but defect engineering provides an opportunity to modulate the physical and chemical properties of semiconductors. Defect engineering has been shown to be effective in regulating electron distribution and accelerating photocatalytic kinetics during photocatalysis. This review introduces the definition and categorization of defects, then explains the main effects of defect engineering on photoabsorption, carrier separation/migration, and surface reduction reactions. We then review the milestones in the design of defect-engineered photocatalysts for key chemical reactions, including hydrogen evolution, CO2 reduction, and N2 reduction, and tabulate their respective effects on catalytic performance. Finally, we provide insights and perspectives on the challenges and potential of defect engineering for photoreduction reactions.</div>","PeriodicalId":100489,"journal":{"name":"eScience","volume":"4 3","pages":"Article 100228"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667141724000016/pdfft?md5=74bd2c20d4b715fa7b46147e114f78e2&pid=1-s2.0-S2667141724000016-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139375126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Stimuli-responsive coordination polymers toward next-generation smart materials and devices 面向下一代智能材料和设备的刺激响应配位聚合物

eScience Pub Date : 2024-06-01 DOI: 10.1016/j.esci.2024.100231

Feifan Lang , Jiandong Pang , Xian-He Bu

{"title":"Stimuli-responsive coordination polymers toward next-generation smart materials and devices","authors":"Feifan Lang , Jiandong Pang , Xian-He Bu","doi":"10.1016/j.esci.2024.100231","DOIUrl":"10.1016/j.esci.2024.100231","url":null,"abstract":"<div>Stimuli-responsive coordination polymers (CPs) are among one of the most prolific research areas in developing the next-generation functional materials. Their capability of being accurately excited by particular external changes with pre-determined and observable/characterizable behaviors correspond, are the so called “stimuli” and “responsive”. Abundant types of CP compounds, especially metal-organic frameworks (MOFs), are of rocketing interest owing to their compositional diversity, structural tunability, and in essence their highly engineerable functionality. This present review is aimed to sketch several common types of stimulation and the corresponding responses for CPs, accompanied with the broad logic and mechanisms underneath. And further from the aspect of material revolution, some representative progresses together with the latest advances of CP-based materials in various fields are covered in attempt to display a broader picture towards the possible prospects of this topic.</div>","PeriodicalId":100489,"journal":{"name":"eScience","volume":"4 3","pages":"Article 100231"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667141724000041/pdfft?md5=e8860fd7500fdf1be0d9b0dc3c1d049e&pid=1-s2.0-S2667141724000041-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139462333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An all-biomaterials-based aqueous binder based on adsorption redox-mediated synergism for advanced lithium–sulfur batteries 基于吸附氧化还原协同作用的全生物材料水性粘合剂，用于先进的锂硫电池

eScience Pub Date : 2024-06-01 DOI: 10.1016/j.esci.2023.100203

Wanyuan Jiang , Tianpeng Zhang , Runyue Mao , Zihui Song , Siyang Liu , Ce Song , Xigao Jian , Fangyuan Hu

{"title":"An all-biomaterials-based aqueous binder based on adsorption redox-mediated synergism for advanced lithium–sulfur batteries","authors":"Wanyuan Jiang , Tianpeng Zhang , Runyue Mao , Zihui Song , Siyang Liu , Ce Song , Xigao Jian , Fangyuan Hu","doi":"10.1016/j.esci.2023.100203","DOIUrl":"10.1016/j.esci.2023.100203","url":null,"abstract":"<div>The complex multistep electrochemical reactions of lithium polysulfides and the solid–liquid–solid phase transformation involved in the S8 to Li2S reactions lead to slow redox kinetics in lithium–sulfur batteries (Li–S batteries). However, some targeted researches have proposed strategies requiring the introduction of significant additional inactive components, which can seriously affect the energy density. Whereas polymer binders, proven to be effective in suppressing shuttle effects and constraining electrode volume expansion, also have promising potential in enhancing Li–S batteries redox kinetics. Herein, a novel aqueous polymer binder is prepared by convenient amidation reaction of fully biomaterials, utilizing its inherent rich amide groups for chemisorption and redox mediating ability of thiol groups to achieve adsorption redox-mediated synergism for efficient conversion of polysulfides. Li–S batteries based on N-Acetyl-L-Cysteine-Chitosan (NACCTS) binder exhibit high initial discharge specific capacity (1260.1 mAh g−1 at 0.2 C) and excellent cycling performance over 400 cycles (capacity decay rate of 0.018% per cycle). In addition, the batteries exhibit great areal capacity and stable capacity retention of 83.6% over 80 cycles even under high sulfur loading of 8.4 mg cm−2. This work offers a novel perspective on the redox-mediated functional design and provides an environmentally friendly biomaterials-based aqueous binder for practical Li–S battery.</div>","PeriodicalId":100489,"journal":{"name":"eScience","volume":"4 3","pages":"Article 100203"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667141723001489/pdfft?md5=bbfd5451dcd1dbd5347d9556e42cfd14&pid=1-s2.0-S2667141723001489-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135810242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Health monitoring by optical fiber sensing technology for rechargeable batteries 利用光纤传感技术监测充电电池的健康状况

eScience Pub Date : 2024-02-01 DOI: 10.1016/j.esci.2023.100174

Yi Zhang , Yanpeng Li , Zezhou Guo , Jianbo Li , Xiaoyu Ge , Qizhen Sun , Zhijun Yan , Zhen Li , Yunhui Huang

{"title":"Health monitoring by optical fiber sensing technology for rechargeable batteries","authors":"Yi Zhang , Yanpeng Li , Zezhou Guo , Jianbo Li , Xiaoyu Ge , Qizhen Sun , Zhijun Yan , Zhen Li , Yunhui Huang","doi":"10.1016/j.esci.2023.100174","DOIUrl":"10.1016/j.esci.2023.100174","url":null,"abstract":"<div>With the proposal of a “smart battery,” real-time sensing by rechargeable batteries has become progressively more important in both fundamental research and practical applications. However, many traditional sensing technologies suffer from low sensitivity, large size, and electromagnetic interference problems, rendering them unusable in the harsh and complicated electrochemical environments of batteries. The optical sensor is an alternative approach to realize multiple-parameter, multiple-point measurements simultaneously. Thus, it has garnered significant attention. Through analyzing these measured parameters, the state of interest can be decoded to monitor a battery's health. This review summarizes current progress in optical sensing techniques for batteries with respect to various sensing parameters, discussing the current limitations of optical fiber sensors as well as directions for their future development.</div>","PeriodicalId":100489,"journal":{"name":"eScience","volume":"4 1","pages":"Article 100174"},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266714172300112X/pdfft?md5=e06bd53e985ddb87c36e42b30c93754d&pid=1-s2.0-S266714172300112X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83895200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unveiling an S-scheme F–Co3O4@Bi2WO6 heterojunction for robust water purification 揭秘用于强效水净化的 S 型 F-Co3O4@Bi2WO6 异质结

eScience Pub Date : 2024-02-01 DOI: 10.1016/j.esci.2023.100206

Linhan Jian , Guowen Wang , Xinghui Liu , Hongchao Ma

{"title":"Unveiling an S-scheme F–Co3O4@Bi2WO6 heterojunction for robust water purification","authors":"Linhan Jian , Guowen Wang , Xinghui Liu , Hongchao Ma","doi":"10.1016/j.esci.2023.100206","DOIUrl":"10.1016/j.esci.2023.100206","url":null,"abstract":"<div>Devising a desirable nano-heterostructured photoelectrode based on the charge transfer kinetics mechanism is a pivotal strategy for implementing efficient photoelectrocatalytic (PEC) technology, since the charge separation and utilization efficiency of a photoelectrode is critical to its PEC performance. Herein, we fabricate a F–Co3O4@Bi2WO6 core–shell hetero-array photoanode by coupling Bi2WO6 nanosheets with F–Co3O4 nanowires using a simple solvothermal solution method. The three-dimensional hierarchical heterostructure has a homogeneous chemical interface, helping it to promote an S-scheme-based carrier transport kinetics and maintain excellent cycling stability. Charge density difference calculations verify the electron migration trend from F–Co3O4 to Bi2WO6 upon hybridization and the formation of an internal electric field in the heterojunction, consistent with the S-scheme mechanism, which is identified by in situ irradiation X-ray photoelectron spectroscopy and by ultraviolet photoelectron spectroscopy. The optimized F–Co3O4@Bi2WO6-2 photoelectrode achieves high carrier utilization efficiency and exhibits superior PEC degradation performance for various organic pollutants, including reactive brilliant blue KN-R, rhodamine B, sulfamethoxazole, and bisphenol A. This work not only reveals that F–Co3O4@Bi2WO6-2 is effective for PEC water remediation but also provides a strategy to enhance carrier transport kinetics by designing binary oxides.</div>","PeriodicalId":100489,"journal":{"name":"eScience","volume":"4 1","pages":"Article 100206"},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667141723001520/pdfft?md5=5edc38cb040ce44a677a54b38d3004ba&pid=1-s2.0-S2667141723001520-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136127986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spatial structure regulation towards armor-clad five-membered pyrroline nitroxides catholyte for long-life aqueous organic redox flow batteries 用于长寿命水性有机氧化还原液流电池的铠装五元吡咯烷亚硝基化合物阴离子的空间结构调控

eScience Pub Date : 2024-02-01 DOI: 10.1016/j.esci.2023.100202

Hao Fan , Kai Liu , Xudong Zhang , Yunpeng Di , Pan Liu , Jiaqi Li , Bo Hu , Hongbin Li , Mahalingam Ravivarma , Jiangxuan Song

{"title":"Spatial structure regulation towards armor-clad five-membered pyrroline nitroxides catholyte for long-life aqueous organic redox flow batteries","authors":"Hao Fan , Kai Liu , Xudong Zhang , Yunpeng Di , Pan Liu , Jiaqi Li , Bo Hu , Hongbin Li , Mahalingam Ravivarma , Jiangxuan Song","doi":"10.1016/j.esci.2023.100202","DOIUrl":"10.1016/j.esci.2023.100202","url":null,"abstract":"<div>Five-membered pyrroline nitroxides with high-potential is fascinating as catholyte for aqueous organic redox flow batteries (AORFBs), however, it suffers from a primary deficiency of insufficient stability due to ring-opening side reaction. Herein we report a spatial structure regulation strategy by host-guest chemistry, encapsulating 3-carbamoyl-2,2,5,5-tetramethylpyrroline-1-oxyl (CPL) into hydrosoluble cyclodextrins (CDs) with an inclusion structure of N–O· head towards cavity bottom, to boost the solubility and cyclability of pyrroline nitroxides significantly. The armor-clad CPL (CPL⊂HP-β-CD) catholyte in 0.05–0.5 M presents a battery capacity fade rate as low as 0.002 %/cycle (0.233 %/day) compared to the sole CPL in 0.05 M (0.039 %/cycle or 5.23 %/day) over 500 cycles in assembled AORFBs. The optimized reclining spatial structure with N–O· head towards CD cavity bottom effectively inhibits the attack of Lewis base species on the hydrogen abstraction site in pyrroline ring, and thus avoids the ring-opening side reaction of pyrroline nitroxides.</div>","PeriodicalId":100489,"journal":{"name":"eScience","volume":"4 1","pages":"Article 100202"},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667141723001477/pdfft?md5=0c50948581c380f0869dabfac80ff09e&pid=1-s2.0-S2667141723001477-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135761213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0