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Large-scale synthesis of low-cost 2D metal–organic frameworks for highly selective photocatalytic CO_(2)reduction

Nano Research 2023年第5期16卷 7756-7760页

作者： Ning-Yu Huang Zhen-Yu Chen Fei-Long Hu Chun-Yan Shang Wenjuan Wang Jia-Run Huang Chuan Zhou Lei Li Qiang Xu Shenzhen Key Laboratory of Micro/Nano-Porous Functional Materials(SKLPM) Southern University of Science and TechnologyShenzhen 518055China Department of Chemistry Southern University of Science and TechnologyShenzhen 518055China Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055China SUSTech-Kyoto University Advanced Energy Materials Joint Innovation Laboratory(SKAEM-JIL) Southern University of Science and TechnologyShenzhen 518055China Key University Laboratory of Highly Efficient Utilization of Solar Energy and Sustainable Development of Guangdong Southern University of Science and TechnologyShenzhen 518055China MOE Key Laboratory of Bioinorganic and Synthetic Chemistry School of ChemistrySun Yat-sen UniversityGuangzhou 510275China

Two-dimensional metal–organic frameworks(2D MOFs),as a new type of 2D materials,have been widely applied in various applications because of their unique structures and exposed active ***,we reported two low-cost 2D MOFs constructed by a raw chemical succinic acid(SA),M-SA(M=Ni or Co),which served as efficient photocatalysts for the reduction of CO_(2)to *** advantage of the thinness and open metal sites,the ultrathin Ni-SA nanosheets(ca.3.6 nm)exhibited excellent CO production of 6.96(7)mmol·g^(−1)·h^(−1)and CO selectivity of 96.6%.Photoelectrochemical tests and theoretical calculations further confirmed the higher charge transfer efficiency and unsaturated metal sites for promoting photocatalytic *** importantly,Ni-SA can also be synthesized in large-scale by an energy-saving method under room temperature,strongly suggesting its promising future and potential for practical applications.

关键词： two-dimensional metal–organic framework low-cost photocatalysis CO_(2)reduction large-scale synthesis

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Interfacial engineering of SnO_(2)/Bi_(2)O_(2)CO_(3)heterojunction on heteroatoms-doped carbon for high-performance CO_(2)electroreduction to formate

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Nano Research 2023年第2期16卷 2278-2285页

作者： Danni Wang Tingting Sun Lianbin Xu Lei Gong Baotong Chen Pianpian Zhang Tianyu Zheng Qingmei Xu Houhe Pan Yuexing Zhang Jianzhuang Jiang Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline MaterialsDepartment of Chemistry and Chemical EngineeringSchool of Chemistry and Biological EngineeringUniversity of Science and Technology BeijingBeijing 100083China State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029China College of Chemistry and Chemical Engineering Dezhou UniversityDezhou 253023China

Electrochemical CO_(2)reduction is a viable,economical,and sustainable method to transform atmospheric CO_(2)into carbon-based fuels and effectively reduce climate change and the energy *** robust catalysts through interface engineering is significant for electrocatalytic CO_(2)reduction(ECR)but remains a grand ***,SnO2/Bi_(2)O_(2)CO_(3)heterojunction on N,S-codoped-carbon(SnO_(2)/BOC@NSC)with efficient ECR performance was firstly constructed by a facile synthetic *** the SnO_(2)/BOC@NSC was utilized in ECR,it exhibits a large formic acid(HCOOH)partial current density(JHCOOH)of 86.7 mA·cm^(−2)at−1.2 V versus reversible hydrogen electrode(RHE)and maximum Faradaic efficiency(FE)of HCOOH(90.75%at−1.2 V versus RHE),***,the FEHCOOH of SnO_(2)/BOC@NSC is higher than 90%in the flow cell and the JHCOOH of SnO_(2)/BOC@NSC can achieve 200 mA·cm^(−2)at−0.8 V versus RHE to meet the requirements of industrialization *** comparative experimental analysis and in-situ X-ray absorption fine structure reveal that the excellent ECR performance can be ascribed to the synergistic effect of SnO_(2)/BOC heterojunction,which enhances the activation of CO_(2)molecules and improves electron *** work provides an efficient SnO_(2)-based heterojunction catalyst for effective formate production and offers a novel approach for the construction of new types of metal oxide heterostructures for other catalytic applications.

关键词： heterojunction charge transfer electrochemical CO_(2)reduction flow cell in-situ X-ray absorption fine structure

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Blocking thermal runaway propagation in large-format sodium-ion battery system through localized energy release

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Journal of Energy Chemistry 2025年第5期104卷 514-526页

作者： Yongchun Dang Yongchao Yu Zhenpo Wang Peng Liu Xunli Zhou Yongjie Zhao Peipei Qi Fei Xu Lei Li National Engineering Research Center of Electric Vehicles Beijing Co-Innovation Centre for Electric VehiclesBeijing Institute of TechnologyBeijing 100081China Beijing Institute of Technology Chongqing Innovation Center Chongqing 401120China Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Research Center of Do-Fluoride New Energy Technology Co. Ltd.Jiaozuo 454003HenanChina

Cascading thermal runaway(TR)propagation poses a critical safety concern for large-format sodium-ion battery(SIB)systems because of the heightened risks of fires or ***,effectively suppressing TR propagation without introducing unintended side effects remains a significant ***,we demonstrate a localized energy release method to mitigate TR,by reducing the state of charge(SOC)of cells adjacent to the thermally runaway *** discover that as the SOCs decreased from 100%to 25%,the TR trigger temperature decreased significantly,and the maximum temperature decrease from 367 to 229℃.Meanwhile,the volume of gas decreased to one-third of its original value,while the range of explosion limits significantly *** analysis of the morphology of the debris further confirms that the structural damage is greater at higher SOC ***,an Entropy Weight and Technique for Order Preference by Similarity to an Ideal Solution(EW-TOPSIS)method has been established to assess the safety status of SIBs,showing that the TR possibility is nearly linear with the SOCs,and the TR hazard is exponentially related to the ***,when the SOC of cells adjacent to the TR cell is reduced to 25%,TR can be directly blocked without the need for additional cooling or thermal insulation *** study not only advances the understanding of TR behavior in SIBs but also offers a straightforward approach to mitigating the TR risk in SIB systems.

关键词： Sodium-ion battery Thermal runaway Safety assessment Localized energy release

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Type I photosensitizer based on AIE chromophore tricyano-methylene-pyridine for photodynamic therapy

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Green Chemical Engineering 2023年第3期4卷 324-330页

作者： Chao Pan Weijun Zhao Xiaolei Zhao Zhenxing Liu Xiangyu Li Yanting Lyu Xupeng Wu Zhirong Zhu Wei-Hong Zhu Qi Wang Shanghai Key Laboratory of Functional Materials Chemistry Key Laboratory for Advanced Materials and Institute of Fine ChemicalsJoint International Research Laboratory of Precision Chemistry and Molecular EngineeringFeringa Nobel Prize Scientist Joint Research CenterFrontiers Science Center for Materiobiology and Dynamic ChemistrySchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai200237China

Image guided photodynamic therapy(PDT)combines fluorescence tracing and phototherapy,which can achieve a more accurate and effective treatment ***,traditional photosensitizers are limited by the aggregation-caused fluorescence quenching(ACQ)effect and low reactive oxygen species(ROS)generation in a hypoxic environment,resulting in poor imaging and treatment ***,we report a tricyano-methylene-pyridine(TCM)-based Type I aggregation-induced emission(AIE)photosensitizer(TCM-MBP),the strong elec-tron acceptance(D-A)effect extends the wavelength to near-infrared(NIR)region to reduce the autofluorescence interference,and oxygen atoms provide lone pair electrons to enhance the inter system crossing(ISC)rate,thereby promoting the generation of more triplet states to produce *** AIE photosensitizer TCM-MBP exhibited low oxygen dependence,NIR emission,and higher ROS production compared to commercially avail-able Ce_(6) and *** encapsulation with DSPE-PEG 2000,TCM-MBP nanoparticles(TCM-MBP NPs)could penetrate to visualize cells and efficiently kill cancer cells upon light *** study provides an oxygen-independent AIE photosensitizer,which has great potential to replace the commercial ACQ photosensitizers.

关键词： Aggregation-induced emission Near-infrared emission Photodynamic therapy Type I ROS

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Polybenzimidazolium-reinforced polyimide separators to inhibit dendrites for high-security lithium-ion batteries

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science China Chemistry 2025年

作者： Guohua Sun Jiaqi Cui Qingsong Zhang Yisong Zhou Xinluo Li Yingying Zhang Zhanao Zhang Xin Zhang Jiantao Fan Pengpeng Li Lianlong Hou Nanjun Chen Hebei Key Laboratory of Flexible Functional Materials School of Materials Science and Engineering Hebei University of Science and Technology State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology Academy for Advanced Interdisciplinary Studies Southern University of Science and Technology State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University

Lithium dendrite formation poses a significant safety hazard in lithium-ion batteries（LIBs）, severely impeding their widespread adoption and further technological advancements. Here, we present a novel quaternized polybenzimidazolium（q-PBI） to armor polyimide（PI） nanofiber separator（q-PBI@PI）, in which the q-PBI containing lithiophilicity and anionphilicity sites serves as the multifunctional nano-layers to suppress the Li dendrite and reinforce the mechanical properties of PI nanofiber ***, the q-PBI@PI separator displays an unprecedented mechanical strength of 82.8 MPa, significantly outperforming previously reported PI nanofiber membranes（typically below 50.0 MPa）. Besides, we demonstrate that the q-PBI@PI separator simultaneously possesses low nucleation overpotential（59 mV） and exceptional average coulombic efficiency due to the suppression of Li dendrite. Importantly, q-PBI@PI-based Li||Li battery enables a stable Li plating-stripping at 1.0 m A cm-2for600 h. Attributing to these exceptional merits, the armored PI separator-based LIBs display remarkable specific capability and capacity retention. The density function theory calculations reveal that q-PBI is conducive to the desolvation of Li+and can immobilize Li+and PF6-ions near affinity sites of PI nanofibers for inhibiting the formation of Li dendrites. Our work paves a new avenue for the design of next-generation high-performing separators in LIBs.

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The applications of single-atom alloys in electrocatalysis:Progress and challenges

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SmartMat 2023年第1期4卷 54-71页

作者： Yumin Da Rui Jiang Zhangliu Tian Xiaopeng Han Wei Chen Wenbin Hu Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityFuzhouChina Department of Chemistry National University of SingaporeSingaporeSingapore Tianjin Key Laboratory of Composite and Functional Materials Key Laboratory of Advanced Ceramics and Machining Technology(Ministry of Education)School of Materials Science and EngineeringTianjin UniversityTianjinChina Department of Physics National University of SingaporeSingaporeSingapore

The development of cost-effective and highly efficient electrocatalysts to accelerate distinct electrochemical reactions is essential to help the industry to achieve a low-carbon ***-atom alloys(SAAs)with the characteristics of unique electronic structures,well-defined active sites,and maximum atom utilization demonstrate promising potential to replace traditional noble metal *** are expected to tailor the adsorption properties of reaction species,thus promoting electrocatalytic ***,representative synthetic strategies including wet chemistry,galvanic replacement,dealloying,and atomic layer deposition are introduced,followed by a summary of applications of SAAs in hydrogen evolution reaction,oxygen evolution reaction,oxygen reduction reaction,carbon dioxide reduction reaction,and ethanol electro-oxidation to provide an in-depth understanding of the structure–activity ***,the challenges and perspectives in this emerging field of SAAs are discussed.

关键词： electrocatalysis single-atom alloys structure-activity relationship synthesis

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Small-Molecular Donor Based Efficient Organic Solar Cells with Thermally Stable Morphologies

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Chinese Journal of Chemistry 2024年第23期42卷 3075-3082页

作者： Wanying Feng Yuyang Bai Jiaying Wang Shaohui Yuan Xiangjian Wan Yu Chen Bin Kan Yongsheng Chen School of Materials Science and Engineering National Institute for Advanced MaterialsNankai UniversityTianjin 300350China State Key Laboratory and Institute of Elemento-Organic Chemistry Frontiers Science Center for New Organic MatterThe Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer MaterialsRenewable Energy Conversion and Storage Center(RECAST)College of ChemistryNankai UniversityTianjin 300071China Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100043China

Small-molecular organic solar cells usually exhibited unsatisfactory device stability,which might originate from their molecular diffusion ***,based on the all-small-molecule system HD-1:BTP-eC9,we reported a dimerized acceptor DC9,and its corresponding monomer acceptor *** comparison with eOD,the dimeric acceptor DC9 displayed higher glass transition temperature(Tg)but reduced molecular planarity and *** all-small molecule blend utilizing HD-1:eOD demonstrated a power conversion efficiency(PCE)of 15.13%,surpassing the value of 14.10%for the HD-1:DC9 ***,incorporating polymer donor PM6 into the HD-1:DC9 blend improved its morphology and charge transport dynamics,resulting in a device efficiency of over 16%,representing the rare case utilizing small-molecular donor and dimeric acceptor with PCE over 16%.Morphological characterization results affirmed that the surface morphologies and molecular packing behaviors of the blend films based on HD-1 were largely retained even after prolonged annealing and aging at 85℃.Consequently,the PCEs of the blend films based on HD-1:eOD,HD-1:DC9,and HD-1:PM6:DC9 consistently remained over 98%of their initial efficiency after 1000 h of thermal annealing aging at 85℃.These findings highlight the potential of small-molecular based active layer in the fabrication of efficient and stable OSCs.

关键词： Organic solar cells Small-molecular donor Small-molecular acceptor Dimeric acceptor Morphological thermal stability

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Self-assembled donor-acceptor hole contacts for inverted perovskite solar cells with an efficiency approaching 22%: The impact of anchoring groups

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Journal of Energy Chemistry 2022年第5期31卷 87-95页

作者： Qiaogan Liao Yang Wang Zilong Zhang Kun Yang Yongqiang Shi Kui Feng Bolin Li Jiachen Huang Peng Gao Xugang Guo Department of Materials Science and Engineering Guangdong Provincial Key Laboratory of Functional Oxide Materials and DevicesSouthern University of Science and Technology(SUSTech)Shenzhen 518055GuangdongChina College of Materials Fujian Key Laboratory of Advanced MaterialsXiamen UniversityXiamen 361005FujianChina CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002FujianChina School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001HeilongjiangChina

Self-assembled molecules(SAMs) have shown great potential in replacing bulk charge selective contact layers in high-performance perovskite solar cells(PSCs) due to their low material consumption and simple processing. Herein, we design and synthesize a series of donor-acceptor(D-A) type SAMs(MPA-BTCA, MPA-BT-BA, and MPA-BT-RA, where MPA is 4-methoxy-N-(4-methoxyphenyl)-N-phenylaniline;BT is benzo[c][1,2,5]-thiadiazole;CA is 2-cyanoacrylic acid, BA is benzoic acid, RA is rhodanine-3-propionic acid) with distinct anchoring groups, which show dramatically different properties. MPA-BTCA with CA anchoring groups exhibited stronger dipole moments and formed a homogeneous monolayer on the indium tin oxide(ITO) surface by adopting an upstanding self-assembling mode. However, the MPA-BT-RA molecules tend to aggregate severely in solid state due to the sp~3 hybridization of the carbon atom on the RA group, which is not favorable for achieving a long-range ordered self-assembled ***, benefiting from high dipole moment, as well as dense and uniform self-assembled film,the device based on MPA-BT-CA yielded a remarkable power conversion efficiency(PCE) of 21.81%.Encouragingly, an impressive PCE approaching 20% can still be obtained for the MPA-BT-CA-based PSCs as the device area is increased to 0.80 cm^(2). Our work sheds light on the design principles for developing hole selecting SAMs, which will pave a way for realizing highly efficient, flexible, and large-area PSCs.

关键词： Self-assembled molecules Donor-acceptor backbones Hole contacts Perovskite solar cells Anchoring groups

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Selective electrocatalytic reduction of CO_(2) to formate via carbon-shell-encapsulated In_(2)O_(3) nanoparticles/graphene nanohybrids

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Journal of materials science & technology 2022年第26期121卷 220-226页

作者： Yidu Wang Jingnan Ding Jun Zhao Jiajun Wang Xiaopeng Han Yida Deng Wenbin Hu Key Laboratory of Advanced Ceramics and Machining Technology(Ministry of Education) Tianjin Key Laboratory of Composite and Functional MaterialsSchool of Materials Science and EngineeringTianjin UniversityTianjin 300072China State Key Laboratory of Marine Resource Utilization in South China Sea School of Materials Science and EngineeringHainan UniversityHaikou 570228China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityFuzhouBinhai New City 350207China

Constructing nanohybrids with a synergistic effect using multi-components and specific micro/nanostructures can significantly enhance their electrocatalytic *** this work,we fabricated an In_(2)O_(3)■NC@GO nanohybrid,in which In_(2)O_(3)nanoparticles(NPs)were encapsulated by an N-doped carbon(NC)shell and supported on *** multi-components in In_(2)O_(3)■NC@GO synergistically optimize the structural and electronic properties of the *** particle size and dispersion of In_(2)O_(3)NPs were optimized owing to the separation effect of the amorphous NC shell and graphene *** separation effect exposes more number of active sites for the electrochemical *** oxygen vacancies exist in In_(2)O_(3),leading to a stronger ability for the adsorption and activation of *** NC shell inhibits the direct contact between the electrolyte and In_(2)O_(3),which significantly suppresses competitive *** charge transfer during the electrocatalysis process is also effectively enhanced due to the carbon *** synergistic effect of multi-components in the In_(2)O_(3)■NC@GO sample results in a significantly improved COreduction reaction performance with a high HCOOFaradic efficiency(FE)of 91.2%and a current density of 40.38 m A cmat–0.8 V obtained using a flow *** present work demonstrates that rationally designing nanohybrids with multifunctional components is an effective strategy for optimizing the structural and electrocatalytic properties of materials for energy conversion.

关键词： In_(2)O_(3) CO_(2)reduction electrocatalyst Oxygen vacancies N-doped carbon Nanohybrids

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Rational design of large anomalous Nernst effect in Dirac semimetals

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npj Computational materials 2023年第1期9卷 258-264页

作者： Panshuo Wang Zongxiang Hu Xiaosong Wu Qihang Liu Shenzhen Institute for Quantum Science and Engineering and Department of Physics Southern University of Science and Technology518055 ShenzhenChina State Key Laboratory for Artificial Microstructure and Mesoscopic Physics Frontiers Science Center for Nano-optoelectronicsand Collaborative Innovation Center of Quantum MatterPeking University100871 BeijingChina Guangdong Provincial Key Laboratory of Computational Science and Material Design Southern University of Science and Technology518055 ShenzhenChina Shenzhen Key Laboratory of Advanced Quantum Functional Materials and Devices Southern University of Science and Technology518055 ShenzhenChina

Anomalous Nernst effect generates a transverse voltage perpendicular to the temperature *** has several advantages compared with the longitudinal thermoelectricity for energy conversion,such as decoupling of electronic and thermal transports,higher flexibility,and simpler lateral ***,a design principle beyond specific materials systems for obtaining a large anomalous Nernst conductivity(ANC)is still *** this work,we theoretically demonstrate that a pair of Dirac nodes under a Zeeman field manifests an odd-distributed,double-peak anomalous Hall conductivity curve with respect to the chemical potential and a compensated carrier feature,leading to an enhanced ANC compared with that of a simple Weyl semimetal with two Weyl *** on first-principles calculations,we then provide two Dirac semimetal candidates,i.e.,Na3Bi and NaTeAu,and show that under a Zeeman field,they exhibit a sizable ANC value of 0.4 Am^(-1)K^(-1) and 1.3 Am^(-1)K^(-1),respectively,near the Fermi *** an approach is also applicable to ferromagnetic materials with intrinsic Zeeman splitting,as exemplified by a hypothetical alloy NaFeTe2Au2,exhibiting an ANC as high as 3.7 Am^(-1)K^(-1) at the Fermi *** work provides a design principle with a prototype band structure for enhanced ANC pinning at the Fermi level,shedding light on the inverse design of other specific functional materials based on electronic structure.

关键词： structure Nernst Dirac

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