Chinese Chemical Letters最新文献

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Tailor-made overstable 3D carbon superstructures towards efficient zinc-ion storage

IF 9.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Chinese Chemical Letters

Pub Date : 2024-08-30 DOI: 10.1016/j.cclet.2024.110381

Chengmin Hu , Pingxuan Liu , Ziyang Song , Yaokang Lv , Hui Duan , Li Xie , Ling Miao , Mingxian Liu , Lihua Gan

Designing carbon materials with ideal stable hierarchical porous structures and flexible functional properties for efficient and sustainable Zn²⁺ ion storage still faces great challenges. Herein, the three-dimensional carbon superstructures with spherical nanoflower-like structures were tailor-made by the self-assembly strategy. Specifically, organic polymer units (i.e. organic motifs) were formed by tetrachloro-p-benzoquinone (TBQ) and 2,6-diamino anthraquinone (DAQ) via a noble-metal-free catalyzed coupling reaction. Subsequently, the organic motifs assemble into spherical nanoflower-like superstructures induced by intermolecular hydrogen bonding and aromatic π-π stacking interactions. Well-designed carbon superstructures can provide a stable backbone that effectively blocks structural stacking and collapse. Meanwhile, the hierarchical porous structures in 3D carbon superstructures provide continuous charge transport pathways to greatly shorten the ion diffusion distance, and as a result, the carbon superstructures-based zinc-ion hybrid capacitors (ZIHCs) provide a capacity of 245 mAh/g at 0.5 A/g, a high energy density of 152 Wh/kg and an ultra-long life of 300,000 cycles at 20 A/g. The excellent electrochemical performance is also attributed to the corresponding charge storage mechanism, i.e., the alternate binding of Zn²⁺/CF₃SO₃⁻ ions. Besides, the high-level N/O motifs improve the surface properties of the carbon superstructures and reduce the ion migration barriers for more efficient charge storage. This paper provides insights into the design of advanced carbon-based cathodes and presents a fundamental understanding of their charge storage mechanisms.

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引用次数: 0

Degradation of chloroxylenol by CoSx activated peroxomonosulfate: Role of cobalt-sulfur ratio

IF 9.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Chinese Chemical Letters

Pub Date : 2024-08-29 DOI: 10.1016/j.cclet.2024.110380

Jiayi Guo , Liangxiong Ling , Qinwei Lu , Yi Zhou , Xubiao Luo , Yanbo Zhou

Cobalt sulfide has received widespread attention in the advanced oxidation treatment of wastewater, and its catalytic activity is influenced by crystal structure and exposed active sites. This work successfully constructed three types of cobalt sulfides, namely Co₉S₈, Co₃S₄ and CoS₂, by changing the molar ratio of cobalt to sulfur. The results showed that the degradation efficiency of Co₉S₈, Co₃S₄ and CoS₂ on chloroxylenol by activated peroxomonosulfate (PMS) were 100 %, 88.70 % and 67.73 %, respectively. Combined with density functional theory (DFT), the structural properties and reaction energy barriers of different cobalt-sulfur ratios were calculated. As the ratio of cobalt to sulfur increases, the sulfur vacancies realized a fuller exposure of active sites (Co²⁺_surf.) on the surface of the catalysts, with a highly linear relationship with the reaction rate constant (R² = 0.945). This work explores the structure-activity relationship between cobalt sulfur ratio and degradation efficiency, which can guide new catalyst synthesis.

{"title":"Degradation of chloroxylenol by CoSx activated peroxomonosulfate: Role of cobalt-sulfur ratio","authors":"Jiayi Guo , Liangxiong Ling , Qinwei Lu , Yi Zhou , Xubiao Luo , Yanbo Zhou","doi":"10.1016/j.cclet.2024.110380","DOIUrl":"10.1016/j.cclet.2024.110380","url":null,"abstract":"<div><div>Cobalt sulfide has received widespread attention in the advanced oxidation treatment of wastewater, and its catalytic activity is influenced by crystal structure and exposed active sites. This work successfully constructed three types of cobalt sulfides, namely Co<sub>9</sub>S<sub>8</sub>, Co<sub>3</sub>S<sub>4</sub> and CoS<sub>2</sub>, by changing the molar ratio of cobalt to sulfur. The results showed that the degradation efficiency of Co<sub>9</sub>S<sub>8</sub>, Co<sub>3</sub>S<sub>4</sub> and CoS<sub>2</sub> on chloroxylenol by activated peroxomonosulfate (PMS) were 100 %, 88.70 % and 67.73 %, respectively. Combined with density functional theory (DFT), the structural properties and reaction energy barriers of different cobalt-sulfur ratios were calculated. As the ratio of cobalt to sulfur increases, the sulfur vacancies realized a fuller exposure of active sites (Co<sup>2+</sup><sub>surf.</sub>) on the surface of the catalysts, with a highly linear relationship with the reaction rate constant (<em>R</em><sup>2</sup> = 0.945). This work explores the structure-activity relationship between cobalt sulfur ratio and degradation efficiency, which can guide new catalyst synthesis.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 4","pages":"Article 110380"},"PeriodicalIF":9.4,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143149393","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

Electrochemical imaging uncovers the heterogeneity of HER activity by sulfur vacancies in molybdenum disulfide monolayer

IF 9.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Chinese Chemical Letters

Pub Date : 2024-08-29 DOI: 10.1016/j.cclet.2024.110379

Xiaoli Deng , Xiangchao Lu , Yang Cao , Qianjin Chen

Engineering of sulfur vacancies on the basal plane of molybdenum disulfide (MoS₂) may provide effective way to promote the catalytic activity. Although the sulfur vacancy density has previously been correlated with catalytic activity, direct evidence that vacancies create surfaces with enhanced electrocatalytic activity is still lacking. Here, we used a combination of scanning electrochemical cell microscopy (SECCM) with submicrometer resolution and photoluminescence imaging to show that sulfur vacancies in monolayer MoS₂ microflakes lead to significant spatial heterogeneity in the electrochemical hydrogen evolution reaction (HER) activity. Specifically, colocated multi-microscopy unveils that regions with superior HER activity are associated with sulfur vacancy defects. As the vacancy density increases, the triangular flakes display significantly enhanced and spatially uniformly distributed electrocatalytic activity. Our multi-microscopic imaging approach using SECCM convincingly highlights the spatial heterogeneity of electrocatalytic activity across monolayer MoS₂ by sulfur vacancy engineering.

{"title":"Electrochemical imaging uncovers the heterogeneity of HER activity by sulfur vacancies in molybdenum disulfide monolayer","authors":"Xiaoli Deng , Xiangchao Lu , Yang Cao , Qianjin Chen","doi":"10.1016/j.cclet.2024.110379","DOIUrl":"10.1016/j.cclet.2024.110379","url":null,"abstract":"<div><div>Engineering of sulfur vacancies on the basal plane of molybdenum disulfide (MoS<sub>2</sub>) may provide effective way to promote the catalytic activity. Although the sulfur vacancy density has previously been correlated with catalytic activity, direct evidence that vacancies create surfaces with enhanced electrocatalytic activity is still lacking. Here, we used a combination of scanning electrochemical cell microscopy (SECCM) with submicrometer resolution and photoluminescence imaging to show that sulfur vacancies in monolayer MoS<sub>2</sub> microflakes lead to significant spatial heterogeneity in the electrochemical hydrogen evolution reaction (HER) activity. Specifically, colocated multi-microscopy unveils that regions with superior HER activity are associated with sulfur vacancy defects. As the vacancy density increases, the triangular flakes display significantly enhanced and spatially uniformly distributed electrocatalytic activity. Our multi-microscopic imaging approach using SECCM convincingly highlights the spatial heterogeneity of electrocatalytic activity across monolayer MoS<sub>2</sub> by sulfur vacancy engineering.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 3","pages":"Article 110379"},"PeriodicalIF":9.4,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143356837","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

Mini review: Strategies for enhancing stability of high-voltage cathode materials in aqueous zinc-ion batteries 小评论：提高锌离子水电池中高压阴极材料稳定性的策略

IF 9.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Chinese Chemical Letters

Pub Date : 2024-08-25 DOI: 10.1016/j.cclet.2024.110368

Lingjiang Kou , Yong Wang , Jiajia Song , Taotao Ai , Wenhu Li , Mohammad Yeganeh Ghotbi , Panya Wattanapaphawong , Koji Kajiyoshi

As battery technology evolves and demand for efficient energy storage solutions, aqueous zinc ion batteries (AZIBs) have garnered significant attention due to their safety and environmental benefits. However, the stability of cathode materials under high-voltage conditions remains a critical challenge in improving its energy density. This review systematically explores the failure mechanisms of high-voltage cathode materials in AZIBs, including hydrogen evolution reaction, phase transformation and dissolution phenomena. To address these challenges, we propose a range of advanced strategies aimed at improving the stability of cathode materials. These strategies include surface coating and doping techniques designed to fortify the surface properties and structure integrity of the cathode materials under high-voltage conditions. Additionally, we emphasize the importance of designing antioxidant electrolytes, with a focus on understanding and optimizing electrolyte decomposition mechanisms. The review also highlights the significance of modifying conductive agents and employing innovative separators to further enhance the stability of AZIBs. By integrating these cutting-edge approaches, this review anticipates substantial advancements in the stability of high-voltage cathode materials, paving the way for the broader application and development of AZIBs in energy storage.

随着电池技术的发展和对高效储能解决方案的需求，锌离子水电池（AZIBs）因其安全和环保优势而备受关注。然而，正极材料在高压条件下的稳定性仍然是提高其能量密度的关键挑战。本综述系统地探讨了 AZIBs 中高压阴极材料的失效机制，包括氢演化反应、相变和溶解现象。为了应对这些挑战，我们提出了一系列旨在提高阴极材料稳定性的先进策略。这些策略包括表面涂层和掺杂技术，旨在强化阴极材料在高压条件下的表面特性和结构完整性。此外，我们还强调了设计抗氧化电解质的重要性，重点是了解和优化电解质的分解机制。本综述还强调了改性导电剂和采用创新分离器进一步提高 AZIBs 稳定性的重要性。通过整合这些前沿方法，本综述预计高压阴极材料的稳定性将取得实质性进展，从而为 AZIBs 在储能领域的更广泛应用和发展铺平道路。

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引用次数: 0

A TOC- and deposition-free electrochromic window driven by redox flow battery 氧化还原液流电池驱动的无 TOC 和沉积物电致变色窗

IF 9.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Chinese Chemical Letters

Pub Date : 2024-08-23 DOI: 10.1016/j.cclet.2024.110355

Jinlong Li , Ruixin Li , Jiahui Liu , Ji-Quan Liu , Jia Xu , Xianglin Zhou , Yefan Zhang , Kairui Wang , Lin Lei , Gang Xie , Fengmei Wang , Ying Yang , Liping Cao

Under “green architecture” principles, electrochromic smart windows are employed to adjust optical transmittance and indoor temperature, yet their high costs limit the wide application. Here, an electrochromic window is driven by a redox flow battery (RFB), where TOC and deposition layers are no longer needed. The transmittance of the electrochromic window is modulated by the state of oxidation (SOC) of aqueous posolyte Fe(phen)₃Cl₂, which is coupled with BTMAP-Vi negolyte in RFB. Under optimized conditions, average CE, VE, and EE reach 93.25 %, 92.61 %, and 86.35 % for RFB with a capacity fading rate of 1.57 % per cycle. 88.66 % optical modulation and 9.36 cm²/C coloration efficiency are achieved in the electrochromic process, and 72.34 % optical modulation is maintained after 12000 s. Essentially, the indoor temperature declines 3 °C for posolyte with 100 % SOC when compared with the control experiment using circulating water for a model house. This means minimum electricity of 0.0185 kWh is saved when using an air conditioner to cool a 100 m³ house, which corresponds to declined CO₂ emission (COE) of 0.0185 kg. This work provides a novel and cost-efficient strategy for modulating indoor comfort via electrochromic windows driven by RFB.

在 "绿色建筑 "原则下，电致变色智能窗被用来调节光学透射率和室内温度，但其高昂的成本限制了其广泛应用。在这里，电致变色窗由氧化还原液流电池（RFB）驱动，不再需要TOC和沉积层。电致变色窗口的透射率受水性正溶液 Fe(phen)3Cl2 的氧化状态 (SOC) 调节，而正溶液与 BTMAP-Vi 负溶液在 RFB 中耦合。在优化条件下，RFB 的平均 CE、VE 和 EE 分别达到 93.25%、92.61% 和 86.35%，容量衰减率为每周期 1.57%。电致变色过程中实现了 88.66 % 的光学调制和 9.36 cm2/C 的着色效率，并且在 12000 秒后仍能保持 72.34 % 的光学调制。与使用循环水的样板房对照实验相比，100 % SOC 的正多晶硅室内温度基本上下降了 3 °C。这意味着使用空调冷却 100 立方米的房屋可节省 0.0185 千瓦时的电量，相当于减少 0.0185 千克的二氧化碳排放量（COE）。这项研究为通过射频波驱动电致变色窗调节室内舒适度提供了一种新颖且具有成本效益的策略。

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引用次数: 0

Surface controllable wettability using amphiphilic rotaxane molecular shuttles 利用两亲性轮烷分子穿梭器实现表面可控润湿性

IF 9.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Chinese Chemical Letters

Pub Date : 2024-08-23 DOI: 10.1016/j.cclet.2024.110353

Dongpu Wu, Zheng Yang, Yuchen Xia, Lulu Wu, Yingxia Zhou, Caoyuan Niu, Puhui Xie, Xin Zheng, Zhanqi Cao

Herein, an alkyne-terminated acid/base responsive amphiphilic [2]rotaxane shuttle was synthesized, and then modified onto the glass surface through “click” reaction. The XPS N 1s spectrum and contact-angle measurement were performed to prove the successful immobilization. The amphiphilic [2]rotaxane functionalized surface presented controllable wettability responding to external acid-base stimuli. This bistable rotaxane modified material system promoted the practical application of molecular machines.

本文合成了一种炔基封端酸碱响应型双亲[2]轮烷梭，并通过 "点击 "反应将其固定在玻璃表面。XPS N 1s 光谱和接触角测量证明了固定的成功。两亲性 [2]rotaxane 功能化表面在外部酸碱刺激下呈现出可控的润湿性。这种双稳态轮烷修饰材料系统促进了分子机器的实际应用。

引用次数: 0

Plasma metabolomics combined with mass spectrometry imaging reveals crosstalk between tumor and plasma in gastric cancer genesis and metastasis 血浆代谢组学结合质谱成像揭示了胃癌发生和转移过程中肿瘤与血浆之间的相互影响

IF 9.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Chinese Chemical Letters

Pub Date : 2024-08-20 DOI: 10.1016/j.cclet.2024.110351

Yanhua Chen , Xian Ding , Jun Zhou , Zhaoying Wang , Yunhai Bo , Ying Hu , Qingce Zang , Jing Xu , Ruiping Zhang , Jiuming He , Fen Yang , Zeper Abliz

Gastric Carcinoma (GC) is a highly fatal malignant tumor with a poor prognosis. Its elevated mortality rates are primarily due to its proclivity for late-stage metastasis. Exploring the metabolic interactions between tumor microenvironment and the systemic bloodstream could help to clearly understand the mechanisms and identify precise biomarkers of tumor growth, proliferation, and metastasis. In this study, an integrative approach that combines plasma metabolomics with mass spectrometry imaging of tumor tissue was developed to investigate the global metabolic landscape of GC tumorigenesis and metastasis. The results showed that the oxidized glutathione to glutathione ratio (GSSH/GSH) became increased in non-distal metastatic GC (M0), which means an accumulation of oxidative stress in tumor tissues. Furthermore, it was found that the peroxidation of polyunsaturated fatty acids, such as 9,10-EpOMe, 9-HOTrE, etc., were accelerated in both plasma and tumor tissues of distal metastatic GC (M1). These changes were further confirmed the potential effect of CYP2E1 and GGT1 in metastatic potential of GC by mass spectrometry imaging (MSI) and immunohistochemistry (IHC). Collectively, our findings reveal the integrated multidimensional metabolomics approach is a clinical useful method to unravel the blood-tumor metabolic crosstalk, illuminate reprogrammed metabolic networks, and provide reliable circulating biomarkers.

胃癌（GC）是一种高度致命的恶性肿瘤，预后极差。其死亡率升高的主要原因是它容易发生晚期转移。探索肿瘤微环境与全身血液之间的代谢相互作用有助于清楚地了解肿瘤生长、增殖和转移的机制并确定精确的生物标志物。本研究开发了一种将血浆代谢组学与肿瘤组织质谱成像相结合的综合方法，以研究 GC 肿瘤发生和转移的全局代谢图谱。结果显示，在非转移性 GC（M0）中，氧化谷胱甘肽与谷胱甘肽的比率（GSSH/GSH）升高，这意味着氧化应激在肿瘤组织中积累。此外，研究还发现，在远端转移性 GC（M1）的血浆和肿瘤组织中，多不饱和脂肪酸（如 9,10-EpOMe、9-HOTrE 等）的过氧化反应加快。质谱成像（MSI）和免疫组化（IHC）进一步证实了 CYP2E1 和 GGT1 对 GC 转移潜能的潜在影响。总之，我们的研究结果表明，综合多维代谢组学方法是一种临床有用的方法，可用于揭示血液与肿瘤之间的代谢串扰，阐明重新编程的代谢网络，并提供可靠的循环生物标志物。

{"title":"Plasma metabolomics combined with mass spectrometry imaging reveals crosstalk between tumor and plasma in gastric cancer genesis and metastasis","authors":"Yanhua Chen , Xian Ding , Jun Zhou , Zhaoying Wang , Yunhai Bo , Ying Hu , Qingce Zang , Jing Xu , Ruiping Zhang , Jiuming He , Fen Yang , Zeper Abliz","doi":"10.1016/j.cclet.2024.110351","DOIUrl":"10.1016/j.cclet.2024.110351","url":null,"abstract":"<div><div>Gastric Carcinoma (GC) is a highly fatal malignant tumor with a poor prognosis. Its elevated mortality rates are primarily due to its proclivity for late-stage metastasis. Exploring the metabolic interactions between tumor microenvironment and the systemic bloodstream could help to clearly understand the mechanisms and identify precise biomarkers of tumor growth, proliferation, and metastasis. In this study, an integrative approach that combines plasma metabolomics with mass spectrometry imaging of tumor tissue was developed to investigate the global metabolic landscape of GC tumorigenesis and metastasis. The results showed that the oxidized glutathione to glutathione ratio (GSSH/GSH) became increased in non-distal metastatic GC (M0), which means an accumulation of oxidative stress in tumor tissues. Furthermore, it was found that the peroxidation of polyunsaturated fatty acids, such as 9,10-EpOMe, 9-HOTrE, <em>etc</em>., were accelerated in both plasma and tumor tissues of distal metastatic GC (M1). These changes were further confirmed the potential effect of CYP2E1 and GGT1 in metastatic potential of GC by mass spectrometry imaging (MSI) and immunohistochemistry (IHC). Collectively, our findings reveal the integrated multidimensional metabolomics approach is a clinical useful method to unravel the blood-tumor metabolic crosstalk, illuminate reprogrammed metabolic networks, and provide reliable circulating biomarkers.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 1","pages":"Article 110351"},"PeriodicalIF":9.4,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142552830","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-throughput screening of high energy density LiMn1-xFexPO4 via active learning 通过主动学习高通量筛选高能量密度 LiMn1-xFexPO4

IF 9.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Chinese Chemical Letters

Pub Date : 2024-08-17 DOI: 10.1016/j.cclet.2024.110344

Qingyun Hu , Wei Wang , Junyuan Lu , He Zhu , Qi Liu , Yang Ren , Hong Wang , Jian Hui

Lithium-ion batteries (LiBs) with high energy density have gained significant popularity in smart grids and portable electronics. LiMn_1-xFe_xPO₄ (LMFP) is considered a leading candidate for the cathode, with the potential to combine the low cost of LiFePO₄ (LFP) with the high theoretical energy density of LiMnPO₄ (LMP). However, quantitative investigation of the intricate coupling between the Fe/Mn ratio and the resulting energy density is challenging due to the parametric complexity. It is crucial to develop a universal approach for the rapid construction of multi-parameter mapping. In this work, we propose an active learning-guided high-throughput workflow for quantitatively predicting the Fe/Mn ratio and the energy density mapping of LMFP. An optimal composition (LiMn_0.66Fe_0.34PO₄) was effectively screened from 81 cathode materials via only 5 samples. Model-guided electrochemical analysis revealed a nonlinear relationship between the Fe/Mn ratio and electrochemical properties, including ion mobility and impedance, elucidating the quantitative chemical composition-energy density map of LMFP. The results demonstrated the efficacy of the method in high-throughput screening of LiBs cathode materials.

具有高能量密度的锂离子电池（LiBs）在智能电网和便携式电子产品中大受欢迎。LiMn1-xFexPO4 (LMFP) 被认为是正极的主要候选材料，它有可能将 LiFePO4 (LFP) 的低成本与 LiMnPO4 (LMP) 的高理论能量密度结合起来。然而，由于参数的复杂性，定量研究铁/锰比率与所产生的能量密度之间的复杂耦合关系具有挑战性。开发一种快速构建多参数映射的通用方法至关重要。在这项工作中，我们提出了一种主动学习引导的高通量工作流程，用于定量预测 LMFP 的铁/锰比和能量密度映射。仅通过 5 个样品就从 81 种阴极材料中有效筛选出了最佳成分（LiMn0.66Fe0.34PO4）。模型指导下的电化学分析表明，铁/锰比与电化学特性（包括离子迁移率和阻抗）之间存在非线性关系，从而阐明了 LMFP 的定量化学成分-能量密度图谱。结果证明了该方法在高通量筛选锂电池阴极材料方面的有效性。

{"title":"High-throughput screening of high energy density LiMn1-xFexPO4 via active learning","authors":"Qingyun Hu , Wei Wang , Junyuan Lu , He Zhu , Qi Liu , Yang Ren , Hong Wang , Jian Hui","doi":"10.1016/j.cclet.2024.110344","DOIUrl":"10.1016/j.cclet.2024.110344","url":null,"abstract":"<div><div>Lithium-ion batteries (LiBs) with high energy density have gained significant popularity in smart grids and portable electronics. LiMn<sub>1-x</sub>Fe<sub>x</sub>PO<sub>4</sub> (LMFP) is considered a leading candidate for the cathode, with the potential to combine the low cost of LiFePO<sub>4</sub> (LFP) with the high theoretical energy density of LiMnPO<sub>4</sub> (LMP). However, quantitative investigation of the intricate coupling between the Fe/Mn ratio and the resulting energy density is challenging due to the parametric complexity. It is crucial to develop a universal approach for the rapid construction of multi-parameter mapping. In this work, we propose an active learning-guided high-throughput workflow for quantitatively predicting the Fe/Mn ratio and the energy density mapping of LMFP. An optimal composition (LiMn<sub>0.66</sub>Fe<sub>0.34</sub>PO<sub>4</sub>) was effectively screened from 81 cathode materials <em>via</em> only 5 samples. Model-guided electrochemical analysis revealed a nonlinear relationship between the Fe/Mn ratio and electrochemical properties, including ion mobility and impedance, elucidating the quantitative chemical composition-energy density map of LMFP. The results demonstrated the efficacy of the method in high-throughput screening of LiBs cathode materials.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 2","pages":"Article 110344"},"PeriodicalIF":9.4,"publicationDate":"2024-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142699594","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

IFC - Editorial Board/ Publication info 国际金融公司 - 编辑委员会/出版信息

IF 9.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Chinese Chemical Letters

Pub Date : 2024-08-14 DOI: 10.1016/S1001-8417(24)00782-4

引用次数: 0

Exploring the frontiers of plant health: Harnessing NIR fluorescence and surface-enhanced Raman scattering modalities for innovative detection

IF 9.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Chinese Chemical Letters

Pub Date : 2024-08-13 DOI: 10.1016/j.cclet.2024.110336

Shu Tian , Wenxin Huang , Junrui Hu , Huiling Wang , Zhipeng Zhang , Liying Xu , Junrong Li , Yao Sun

Plants play a crucial role in maintaining ecological balance and biodiversity. However, plant health is easily affected by environmental stresses. Hence, the rapid and precise monitoring of plant health is crucial for global food security and ecological balance. Currently, traditional detection strategies for monitoring plant health mainly rely on expensive equipment and complex operational procedures, which limit their widespread application. Fortunately, near-infrared (NIR) fluorescence and surface-enhanced Raman scattering (SERS) techniques have been recently highlighted in plants. NIR fluorescence imaging holds the advantages of being non-invasive, high-resolution and real-time, which is suitable for rapid screening in large-scale scenarios. While SERS enables highly sensitive and specific detection of trace chemical substances within plant tissues. Therefore, the complementarity of NIR fluorescence and SERS modalities can provide more comprehensive and accurate information for plant disease diagnosis and growth status monitoring. This article summarizes these two modalities in plant applications, and discusses the advantages of multimodal NIR fluorescence/SERS for a better understanding of a plant's response to stress, thereby improving the accuracy and sensitivity of detection.

{"title":"Exploring the frontiers of plant health: Harnessing NIR fluorescence and surface-enhanced Raman scattering modalities for innovative detection","authors":"Shu Tian , Wenxin Huang , Junrui Hu , Huiling Wang , Zhipeng Zhang , Liying Xu , Junrong Li , Yao Sun","doi":"10.1016/j.cclet.2024.110336","DOIUrl":"10.1016/j.cclet.2024.110336","url":null,"abstract":"<div><div>Plants play a crucial role in maintaining ecological balance and biodiversity. However, plant health is easily affected by environmental stresses. Hence, the rapid and precise monitoring of plant health is crucial for global food security and ecological balance. Currently, traditional detection strategies for monitoring plant health mainly rely on expensive equipment and complex operational procedures, which limit their widespread application. Fortunately, near-infrared (NIR) fluorescence and surface-enhanced Raman scattering (SERS) techniques have been recently highlighted in plants. NIR fluorescence imaging holds the advantages of being non-invasive, high-resolution and real-time, which is suitable for rapid screening in large-scale scenarios. While SERS enables highly sensitive and specific detection of trace chemical substances within plant tissues. Therefore, the complementarity of NIR fluorescence and SERS modalities can provide more comprehensive and accurate information for plant disease diagnosis and growth status monitoring. This article summarizes these two modalities in plant applications, and discusses the advantages of multimodal NIR fluorescence/SERS for a better understanding of a plant's response to stress, thereby improving the accuracy and sensitivity of detection.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 3","pages":"Article 110336"},"PeriodicalIF":9.4,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143317467","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

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