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(feO)_(2)feBO_(3) nanoparticles attached on interconnected nitrogen-doped carbon nanosheets serving as sulfur hosts for lithium-sulfur batteries

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frontiers of Materials Science 2024年第2期18卷 75-88页

作者： Junhai Wang huaqiu huang Chen Chen Jiandong Zheng Yaxian cao Sang Woo Joo Jiarui huang School of Material and Chemical Engineering Chuzhou UniversityChuzhou 239000China College of Mechanical Engineering Tongling UniversityTongling 244000China Key Laboratory of functional Molecular Solids of the Ministry of Education College of Chemistry and Materials ScienceAnhui Normal UniversityWuhu 241002China School of Mechanical Engineering Yeungnam UniversityGyeongsanGyeongbuk 38541Republic of Korea

There are still many challenges including low conductivity of cathodes,shuttle effect of polysulfides,and significant volume change of sulfur during cycling to be solved before practical applications of lithium-sulfur(Li-S)*** this work,(feO)_(2)feBO_(3) nanoparticles(NPs)anchored on interconnected nitrogen-doped carbon nanosheets(NcNs)were synthesized,serving as sulfur carriers for Li-S batteries to solve such *** have the cross-linked network structure,which possess good electrical conductivity,large specific surface area,and abundant micropores and mesopores,enabling the cathode to be well infiltrated and permeated by the electrolyte,ensuring the rapid electron/ion transfer,and alleviating the volume expansion during the electrochemical *** addition,polar(feO)_(2)feBO_(3) can enhance the adsorption of polysulfides,effectively alleviating the polysulfide shuttle *** a current density of 1.0 A·g^(-1),the initial discharging and charging specific capacities of the(feO)_(2)feBO_(3)@NCNs-2/S electrode were obtained to be 1113.2 and 1098.3mA·h·g^(-1),*** 1000 cycles,its capacity maintained at 436.8 mA·h·g^(-1),displaying a decay rate of 0.08%per ***,combining NCNs with(feO)_(2)feBO_(3) NPs is conducive to the performance improvement of Li-S batteries.

关键词： (feO)_(2)feBO_(3) nitrogen-doped carbon nanosheet cathode lithium-sulfurbattery

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Identification of prognostic molecular subtypes and model based on CD8+ T cells for lung adenocarcinoma

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BIOCELL 2024年第3期48卷 473-490页

作者： hONGMIN cao YING XUE fEI WANG GUANGYAO LI YULAN ZhEN JINGWEN GUO Internal Medicine-Oncology Dongguan Songshan Lake Central HospitalDongguan523326China Tumor Center First Dongguan Affiliated HospitalGuangdong Medical UniversityDongguan523888China

Background:Cytotoxic T lymphocytes(CD8+T)cells function critically in mediating anti-tumor immune response in cancer *** the speciﬁc functions of CD8+T cells in lung adenocarcinoma(LUAD)could help better understand local anti-tumor immune responses and estimate the effect of ***:Gens related to CD8+T cells were identiﬁed by cluster analysis based on the single-cell sequencing data of three LUAD tissues and their paired normal *** gene co-expression network analysis(WGCNA),consensus clustering,differential expression analysis,least absolute shrinkage and selection operator(LASSO)and Cox regression analysis were conducted to classify molecular subtypes for LUAD and to develop a risk model using prognostic genes related to CD8+T *** of the genes in the prognostic model,their effects on tumor cell invasion,and interactions with CD8+T cells were veriﬁed by cell ***:This study deﬁned two LUAD clusters(CD8+0 and CD8+1)based on CD8+T cells,with cluster CD8+0 being signiﬁcantly associated with the prognosis of *** heterogeneous subtypes(clusters 1,2,and 3)differing in prognosis,genome mutation events,and immune status were categorized using 42 prognostic genes.A prognostic model created based on 11 signiﬁcant genes(including CD200R1,CLEC17A,ZC3h12D,GNG7,SNX30,CDCP1,NEIL3,IGf2BP1,RhOV,ABCC2,and KRT81)was able to independently estimate the death risk for patients in different LUAD ***,the model also showed general applicability in external validation ***-risk patients could beneﬁt more from taking immunotherapy and were signiﬁcantly related to the resistance to anticancer *** results from cell experiments demonstrated that the expression of CD200R1,CLEC17A,ZC3h12D,GNG7,and SNX30 was signiﬁcantly downregulated,while that of CDCP1,NEIL3,IGf2BP1,RhOV,ABCC2 and KRT81 was upregulated in LUAD *** of CD200R1 greatly increased the invasiveness of the LUAD cell

关键词： CD8+T cell Lung adenocarcinoma Molecular subtype Prognostic model Immunotherapy

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In-situ interfacial passivation and self-adaptability synergistically stabilizing all-solid-state lithium metal batteries

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Journal of Energy Chemistry 2024年第1期88卷 282-292,I0007页

作者： huanhui Chen Xing cao Moujie huang Xiangzhong Ren Yubin Zhao Liang Yu Ya Liu Liubiao Zhong Yejun Qiu Shenzhen Engineering Lab of flexible Transparent Conductive films School of Materials Science and EngineeringHarbin Institute of TechnologyShenzhen 518055GuangdongChina Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems School of Materials Science and EngineeringHarbin Institute of TechnologyShenzhen 518055GuangdongChina College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518060GuangdongChina School of Resource and Environmental Sciences Wuhan UniversityWuhan 430072HubeiChina

The function of solid electrolytes and the composition of solid electrolyte interphase(SEI)are highly significant for inhibiting the growth of Li ***,we report an in-situ interfacial passivation combined with self-adaptability strategy to reinforce Li_(0.33)La_(0.557)TiO_(3)(LLTO)-based solid-state ***,a functional SEI enriched with Lif/Li_(3)PO_(4) is formed by in-situ electrochemical conversion,which is greatly beneficial to improving interface compatibility and enhancing ion *** the polarized dielectric BaTiO_(3)-polyamic acid(BTO-PAA,BP)film greatly improves the Li-ion transport kinetics and homogenizes the Li *** expected,the resulting electrolyte offers considerable ionic conductivity at room temperature(4.3 x 10~(-4)S cm^(-1))and appreciable electrochemical decomposition voltage(5.23 V)after electrochemical *** Li-LifePO_(4) batteries,it shows a high specific capacity of 153 mA h g^(-1)at 0.2C after 100 cycles and a long-term durability of 115 mA h g^(-1)at 1.0 C after 800 ***,a stable Li plating/stripping can be achieved for more than 900 h at 0.5 mA cm^(-2).The stabilization mechanisms are elucidated by ex-situ XRD,ex-situ XPS,and ex-situ fTIR techniques,and the corresponding results reveal that the interfacial passivation combined with polarization effect is an effective strategy for improving the electrochemical *** present study provides a deeper insight into the dynamic adjustment of electrode-electrolyte interfacial for solid-state lithium batteries.

关键词： Solid-state lithium batteries Composite solid electrolyte In-situ polymerization Interfacial passivation layer Self-adaptability

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In Situ high-performance Gel Polymer Electrolyte with Dual-reactive Cross-linking for Lithium Metal Batteries

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Energy & Environmental Materials 2024年第1期7卷 51-59页

作者： fuhe Wang honghao Liu Yaqing Guo Qigao han Ping Lou Long Li Jianjie Jiang Shijie Cheng Yuancheng cao School of Materials Science and Engineering huazhong University huazhong University of Science and Technology Wuhan 430074China State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and TechnologyWuhan 430074China State Grid huzhou Power Supply Company Huzhou 313000China huzhou Electric Power Design Institute Company Huzhou 311404China

Lithium metal batteries have been considered as one of the most promising next-generation power-support devices due to their high specific energy and output ***,the uncontrollable side-reaction and lithium dendrite growth lead to the limited serving life and hinder the practical application of lithium metal ***,a tri-monomer copolymerized gel polymer electrolyte(TGPE)with a cross-linked reticulation structure was prepared by introducing a cross-linker(polyurethane group)into the acrylate-based in situ polymerization *** soft segment of polyurethane in TGPE enables the far migration of lithium ions,and the-Nh forms hydrogen bonds in the hard segment to build a stable cross-linked *** system hinders anion migration and leads to a high Li^(+)migration number(t_(Li^(+))=0.65),which achieves uniform lithium deposition and effectively inhibits lithium dendrite *** a result,the assembled symmetric cell shows robust reversibility over 5500 h at a current density of 1 mA cm^(-2).The LfP∷TGPE∷Li cell has a capacity retention of 89.8%after cycling 800 times at a rate of *** summary,in situ polymerization of TGPE electrolytes is expected to be a candidate material for high-energy-density lithium metal batteries.

关键词： gel polymer electrolytes hydrogen bonds in situ polymerization lithium metal batteries polyurethane

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Selective leaching of lithium from spent lithium-ion batteries using sulfuric acid and oxalic acid

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International Journal of Minerals,Metallurgy and Materials 2024年第4期31卷 688-696页

作者： haijun Yu Dongxing Wang Shuai Rao Lijuan Duan Cairu Shao Xiaohui Tu Zhiyuan Ma hongyang cao Zhiqiang Liu Institute of Advanced Wear&Corrosion Resistant and functional Materials Jinan UniversityGuangzhou 510632China Institute of Resources Utilization and Rare Earth Development Guangdong Academy of SciencesGuangzhou 510650China State Key Laboratory of Separation and Comprehensive Utilization of Rare Metals Guangzhou 510650China Guangdong Province Key Laboratory of Rare Earth Development and Application Guangzhou 510650China

Traditional hydrometallurgical methods for recovering spent lithium-ion batteries(LIBs)involve acid leaching to simultaneously extract all valuable metals into the *** methods usually are followed by a series of separation steps such as precipitation,extraction,and stripping to separate the individual valuable *** this study,we present a process for selectively leaching lithium through the synergistic effect of sulfuric and oxalic *** optimal leaching conditions(leaching time of 1.5 h,leaching temperature of 70°C,liquid-solid ratio of 4 mL/g,oxalic acid ratio of 1.3,and sulfuric acid ratio of 1.3),the lithium leaching efficiency reached89.6%,and the leaching efficiencies of Ni,Co,and Mn were 12.8%,6.5%,and 21.7%.X-ray diffraction(XRD)and inductively coupled plasma optical emission spectrometer(ICP-OES)analyses showed that most of the Ni,Co,and Mn in the raw material remained as solid residue oxides and *** study offers a new approach to enriching the relevant theory for selectively recovering lithium from spent LIBs.

关键词： selective leaching oxalic acid sulfuric acid spent lithium-ion batteries

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Boosting the catalytic performance of Cu-SAPO-34in NO_(x) removal via hydrothermal treatment

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Journal of Environmental Sciences 2024年第1期135卷 640-655页

作者： Xiaoyan Tian huimin Wang Siyuan Xu Lianyun Gao Jinyan cao Jianjun Chen Qiulin Zhang Ping Ning Jiming hao faculty of Environmental Science and Engineering Kunming University of Science and TechnologyKunming 650500China National-Regional Engineering Center for Recovery of Waste Gases from Metallurgical and Chemical Industries Kunming University of Science and TechnologyKunming 650500China School of Environment State Key Joint Laboratory of Environment Simulation and Pollution ControlTsinghua UniversityBeijing 100084China

Phosphate ions promoted Cu-SAPO-34(P-Cu-SAPO-34)were prepared using bulk CuO particles as Cu^(2+)precursor by a solid-state ion exchange technique for the selective catalytic reduction of NO_(x) with Nh_3(Nh_3-SCR).The effects of high temperature(h-T)hydrothermal aging on the NO_(x) removal(de-NO_(x))performance of Cu-SAPO-34 with and without phosphate ions were systematically investigated at atomic *** results displayed that both Cu-SAPO-34 and P-Cu-SAPO-34 presented relatively poor NO_(x) removal activity with a low conversion(however,after h-T hydrothermal treatment(800℃ for 10 hr at 10%h_2O),these two samples showed significantly satisfied NO_(x) elimination performance with a quite high conversion(70%-90%)at 250-500℃.Additionally,phosphate ions decoration can further enhance the catalytic performance of Cu-SAPO-34 after hydrothermal treatment(Cu-SAPO-34h).The textural properties,morphologies,structural feature,acidity,redox characteristic,and surface-active species of the fresh and hydrothermally aged samples were analyzed using various characterization *** systematical characterization results revealed that increases of 28%of the isolated Cu^(2+)active species(Cu^(2+)-2Z,Cu(Oh)^(+)-Z)mainly from bulk CuO and 50%of the Bronsted acid sites,the high dispersion of isolated Cu^(2+)active component as well as the Bronsted acid sites were mainly responsible for the accepted catalytic activity of these two hydrothermally aged samples,especially for P-Cu-SAPO-34h.

关键词： Nh_(3)-SCR Cu-SAPO-34 hydrothermal induced Phosphate ions

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Two UV organic-inorganic hybrid antimony-based materials with superior optical performance derived from cation-anion synergetic interactions

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Chinese Chemical Letters 2024年第9期35卷 442-446页

作者： Pu Zhang Xiang Mao Xuehua Dong Ling huang Liling cao Daojiang Gao Guohong Zou College of Chemistry and Materials Science Sichuan Normal UniversityChengdu 610066China College of Chemistry Sichuan UniversityChengdu 610065China

finding suitable strategies to effectively enhance the optical properties of materials are the goal being pursued by ***,cation-anion synergetic interactions strategy was proposed to develop two novel organic-inorganic hybrid antimony-based optical materials,(C_(3)h_(5)N_(2))Sb f_(2)SO_(4)(I)and(C_(5)h_(6)N)Sb f_(2)SO_(4)(Ⅱ),which were obtained by introducing Sb^(3+)cation containing stereochemically active lone-pair(SCALP)and organicπ-conjugated cations into sulphate *** synergistic interactions of the organicπ-conjugated cations,the inorganic[SbO_(2)f_(2)]^(3-)seesaw anions and the[SO_(4)]^(2-)distorted tetrahedra anions make their ultraviolet(UV)absorption edges approach 297 and 283 nm,respectively,and raise their birefringence up to 0.193@546 nm and 0.179@546 nm,***,although the two compounds have the same stoichiometric ratio and similar one-dimensional(1D)chain structure,they show opposite macroscopic symmetry,where the NCS compound(Ⅱ)exhibits a large secondharmonic generation(ShG)response(1.6 times that of Kh_(2)PO_(4)).The two reported compounds are found to be promising UV optical materials in the experimental tests.

关键词： Antimony-based crystals Cation-anion synergetic interactions Large birefringence Short UV absorption edge Organic-inorganic hybrid Ionothermal synthesis

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The photo-decomposition and self-restructuring dynamic equilibrium mechanism of Cu_(2)(Oh)_(2)CO_(3)for stable photocatalytic CO_(2)reduction

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Journal of Energy Chemistry 2024年第5期92卷 104-112页

作者： Yaqing Zhi haoning Mao Guangxing Yang Qiao Zhang Zhiting Liu Yonghai cao Siyuan Yang feng Peng School of Chemistry and Chemical Engineering Guangzhou UniversityGuangzhou 510006GuangdongChina College of Materials and Energy South China Agricultural UniversityGuangzhou 510642GuangdongChina School of Chemistry and Chemical Engineering South China University and TechnologyGangzhou 510640GuangdongChina

Developing suitable photocatalysts and understanding their intrinsic catalytic mechanism remain key challenges in the pursuit of highly active,good selective,and long-term stable photocatalytic CO_(2)reduction(PCO_(2)R)***,monoclinic Cu_(2)(Oh)_(2)CO_(3)is firstly proven to be a new class of photocatalyst,which has excellent catalytic stability and selectivity for PCO_(2)R in the absence of any sacrificial agent and *** on a Cu_(2)(Oh)_(2)^(13)CO_(3)photocatalyst and 13CO_(2)two-sided^(13)C isotopic tracer strategy,and combined with in situ diffused reflectance infrared fourier transform spectroscopy(DRIfTS)analysis and density functional theory(DfT)calculations,two main CO_(2)transformation routes,and the photo-decomposition and self-restructuring dynamic equilibrium mechanism of Cu_(2)(Oh)_(2)CO_(3)are definitely *** PCO_(2)R activity of Cu_(2)(Oh)_(2)CO_(3)is comparable to some of state-of-the-art novel ***,the PCO_(2)R properties can be further greatly enhanced by simply combining Cu_(2)(Oh)_(2)CO_(3)with typical TiO_(2)to construct composites *** highest CO_(2)and Ch_(4)production rates by 7.5 wt%Cu_(2)(Oh)_(2)CO_(3)-TiO_(2)reach 16.4μmol g^(-1)h^(-1)and 116.0μmol g^(-1)h^(-1),respectively,which are even higher than that of some of PCO_(2)R systems containing sacrificial agents or precious metals modified *** work provides a better understanding for the PCO_(2)R mechanism at the atomic levels,and also indicates that basic carbonate photocatalysts have broad application potential in the future.

关键词： CO_(2)photocatalytic reduction Photocatalysis Basic copper carbonate Self-reconstruction Photocatalyst

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Optimizing theπ-Bridge of Non-fullerene Acceptors to Suppress Dark Current in NIR Organic Photodetectors

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Chemical Research in Chinese Universities 2024年第4期40卷 712-721页

作者： ShAO Lin hUANG Yijun hONG Ling XU Zishuo YANG Xiye LIU Chunchen hUANG fei cao Yong State Key Laboratory of Luminescent Materials and Devices Institute of Polymer Optoelectronic Materials and DevicesSchool of Materials Science and EngineeringSouth China University of TechnologyGuangzhou510640P.R.China Lumidar Technology Co. Ltd.Guangzhou510530P.R.China

Recently,the rapid development of non-fullerene acceptors(NfAs)has laid the foundation for performance improvements in near-infrared(NIR)organic photodetectors(OPDs).however,reducing the bandgap of NfAs to achieve strong absorption in the shorter-wave region usually leads to increased dark current density(J_(d))and decreased responsivity(R),severely limiting the detectivity(D*)of *** date,it remains challenging to manipulate the J_(d) of NIR-OPDs through rational structure engineering of ***,three NIR-NfAs,namely bis(2-decyltetradecyl)4,4′-(2′,7′-di-tert-butylspiro[cyclopenta[2,1-b:3,4-b′]dithiophene-4,9′-fluorene]-2,6-diyl)bis(6-(((Z)-1-(dicyanomethylene)-5,6-difluoro-3-oxo-1,3-dihydro-2h-inden-2-ylidene)methyl)thieno[3,4-b]thiophene-2-carboxylate)(TSIC-4f),bis(2-decyltetradecyl)6,6′-(2′,7′-di-tert-butylspiro[cyclopenta[2,1-b:3,4-b′]dithiophene-4,9′-fluorene]-2,6-diyl)bis(4-(((Z)-1-(dicyanomethylene)-5,6-difluoro-3-oxo-1,3-dihydro-2h-inden-2-ylidene)methyl)thieno[3,4-b]thiophene-2-carboxylate)(STIC-4f),and 2,2′-((2Z,2′Z)-(((2′,7′-di-tert-butylspiro[cyclopenta[2,1-b:3,4-b′]dithiophene-4,9′-fluorene]-2,6-diyl)bis(2,3-bis(5-(2-butyloctyl)thiophen-2-yl)thieno[3,4-b]pyrazine-7,5-diyl))bis(metha-neylylidene))bis(5,6-difluoro-3-oxo-2,3-dihydro-1h-indene-2,1-diylidene))dimalononitrile(TPIC-4f),were designed using the thieno[3,4-b]thiophene(TT)and thieno[3,4-b]pyrazine(TPy)derivatives as theπ-*** to the intramolecular S-S and S-N interactions,STIC-4f and TPIC-4f exhibited smaller backbone distortions than TSIC-4f.A significantly red-shifted absorption with a peak at 1015 nm was observed in TPIC-4f film,larger than that(ca.960 nm)for TSIC-4f and STIC-4f ***,OPDs operating in a photovoltaic mode were successfully fabricated,and TPIC-4f-based OPDs achieved the lowest J_(d) of 3.18×10^(-8) A/cm^(2) at-0.1 ***,although TPIC-4f-based OPDs exhibited the lowest R,higher shot-noise-limited specific detectivity(D_(sh)*)in 1000-1200 nm co

关键词： π-Bridge Near-infrared Non-fullerene acceptor Dark current Organic photodetector

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Temperature-dependent solubility of Rebaudioside A in methanol/ethanol and ethyl acetate mixtures:Experimental measurements and thermodynamic modeling

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Chinese Journal of Chemical Engineering 2024年第8期72卷 164-176页

作者： Zhenguang Liu Zexiang Ding Yifeng cao Baojian Liu Qiwei Yang Zhiguo Zhang Qilong Ren Zongbi Bao Key Laboratory of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310058China Institute of Zhejiang University-Quzhou Quzhou 324000China

The equilibrium solubility of Rebaudioside A(Reb A)formⅡin binary mixtures of methanol/ethanol and ethyl acetate was quantitatively determined within the temperature range of 283.15—328.15 K at ambient *** experimental findings indicate a positive correlation between the solubility of Reb A(formⅡ)and both the temperature and the methanol/ethanol content in the solvent *** describe the solubility data,six distinct models were employed:the modified Apelblat equation,theλh model,the combined nearly ideal binary solvent/Redlich—Kister(CNIBS/R—K)model,the van't hoffJouyban-Acree(VJA)model,the Apelblat-Jouyban-Acree(AJA)model,and the non-random two-liquid(NRTL)*** combined nearly ideal binary solvent/Redlich—Kister model exhibited the most precise fit for solubility in methanol+ethyl acetate mixtures,reflected by an average relative deviation(ARD)of 0.0011 and a root mean square deviation(RMSD)of 12×10^(-7).Conversely,for ethanol+ethyl acetate mixtures,the modified Apelblat equation provided a superior correlation(ARD=0.0014,RMSD=4×10^(-7)).furthermore,thermodynamic parameters associated with the dissolution of Reb A(formⅡ),including enthalpy,entropy,and the Gibbs energy change,were inferred from the *** findings underscore that the dissolution process is predominantly endothermic across the solvent systems ***,the entropy changes appear to have a significant influence on the Gibbs free energy associated with the dissolution of Reb A(formⅡ),suggesting that entropic factors may play a pivotal role in the studied systems.

关键词： Rebaudioside A Solubility Thermodynamic modeling Dissolution Binary solvent

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