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Advances in preparation methods and mechanism analysis of layered double hydroxide for lithium-ion batteries and lithium-sulfur batteries

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Journal of Energy Chemistry 2021年第7期30卷 472-499页

作者： Wen Yu Nanping Deng Kewei Cheng Jing Yan Bowen Cheng Weimin Kang State Key laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes Tiangong UniversityTianjin 300387China School of Textile science and Engineering Tiangong UniversityTianjin 300387China

Lithium-ion(Li-ion) battery and lithium-sulfur(Li-S) battery have attracted significant attention as promising components for large-scale energy storage because of high theoretical capacity of Li,excellent energy density or environmental friendness for two kinds of ***,there still exist some respective obstacles for commercial applications,such as limited theoretical capacity,high cost and low conductivity of Li-ion cells or shuttle effect of lithium polysulfides of Li-S *** typical twodimensional materials,layered double hydroxides(LDHs) exhibit excellent potential in the field of energy storage due to facile tunability of composition,structure and morphology as well as convenient composite and strong catalytic ***,various LDHs toward novel separators or interlayers,cathodes,anodes,and interesting catalytic templates are researched to resolve these *** this review,the recent progress for LDHs applied in Li-ion batteries and Li-S batteries including the synthesis methods,designs and applications is presented and ***,the existing challenges and future perspectives associated with material designs and practical applications of LDHs for these two classes of cells are *** hope that the review can attract more attention and inspire more profound researches toward the LDH-based electrochemical materials for energy storage.

关键词： Layered double hydroxide Synthesis methods Structural designs Lithium-ion battery Lithium-sulfur battery Electrochemical performances

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Enhanced optoelectronic characteristics of MoS_(2)-based photodetectors through hybridization with CdS_(0.42)Se_(0.58)nanobelt

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Journal of Advanced Dielectrics 2023年第6期13卷 20-28页

作者： Aimin Liu Jiyu Zhao Qiuhong Tan Peizhi Yang Yingkai Liu Qianjin Wang College of Physics and Electronic Information Yunnan Normal University Yunnan Kunming 650500P.R.China Yunnan Provincial Key laboratory for Photoelectric Information technology Yunnan Normal University Yunnan Kunming 650500P.R.China Key laboratory of Advanced Technique&Preparation for Renewable Energy materials Ministry of Education Yunnan Normal University Yunnan Kunming 650500 P.R.China

Monolayer molybdenum disulfide(MoS_(2))has weak light absorption due to its atomically-thin thickness,thus hindering the development of MoS_(2)-based optoelectronic ***_(x)Se_(1-x)has excellent photoelectric performance in the visible light range,and its nanostructure shows great potential in new nanoscale electronic and optoelectronic *** this work,a composite photodetector device with the combination of monolayer MoS_(2)nanosheets and CdS_(0.42)Se_(0.58)nanobelts has been successfully prepared,which can not only maintain the inherent excellent properties of the two blocks,but also play a synergistic role between them,thus improving the photoelectric performance of the *** monolayer MoS_(2)nanosheet/CdS_(0.42)Se_(0.58)nanobelt photodetector has a wide spectral response range(400–800 nm),high responsivity(527.22 A/W)and large external quantum efficiency(EQE)(1.06×10^(5)%).Compared with the isolated monolayer MoS_(2)nanosheet,both the responsivity and EQE of the hybrid photodetector are increased by 117.4 times under 620 nm *** study provides a way to prepare hybrid photodetectors with wide spectral response and high responsivity.

关键词： Monolayer MoS_(2) CdS_(0.42)Se_(0.58)nanobelt photodetectors

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Preparation of a fullerene[60]‐iron oxide complex for the photo‐fenton degradation of organic contaminants under visible‐light irradiation

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Chinese Journal of Catalysis 2018年第6期39卷 1051-1059页

作者： Cong‐yang Zou Ze‐da Meng Wen‐chao Ji Shou‐qing Liu Zhemin Shen Yuan Zhang Ni‐shan Jiang School of Environmental science and Engineering Shanghai Jiao Tong University Shanghai 200240 China School of Environmental science and Engineering Suzhou University of Science and Technology Shihu Campus Suzhou 215009 Jiangsu China

Iron oxide（Fe2O3） was doped onto fullerene[60]（C（60）） to form a C（60）‐Fe2O3 composite using an easy and scalable impregnation method. The as‐prepared C（60）‐Fe2O3 samples were characterized by powder X‐ray diffraction, X‐ray photoelectron spectroscopy, scanning electron microscopy, high‐resolution transmission electron microscopy, UV‐vis absorption spectroscopy, Raman spec‐troscopy, and Fourier transform infrared spectroscopy. The photocatalytic activity of the C（60）‐Fe2O3 catalyst was evaluated by examining the degradation of methylene blue（MB）, rhodamine B（RhB）, methyl orange（MO）, and phenol under visible light（λ 420 nm） in the presence of hydrogen per‐oxide. The results showed that the catalyst exhibited excellent catalytic properties over a wide pH range 3.06–10.34. Under optimal conditions, 98.9% discoloration and 71% mineralization of MB were achieved in 80 min. Leaching test results indicated that the leaching of iron from the catalyst was negligible and that the catalyst had a high photocatalytic activity after five reaction cycles. The catalyst was also efficient in the degradation of RhB, MO, and phenol. These findings could be at‐tributed to the synergetic effects of C（60） and Fe2O3. We used active species trapping experiments to determine the main active oxidant in the photocatalytic reaction process and found that hydroxyl radicals played a major role in the entire process.

关键词： C60‐Fe2O3 Heterogeneousphotocatalysis Photo‐Fenton VisiblelightActive species trapping

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Roles of metal element substitutions from the bimetallic solid state electrolytes in lithium batteries

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Particuology 2022年第6期20卷 51-71页

作者： Wen Yu Nanping Deng Lin Tang Kewei Cheng Bowen Cheng Weimin Kang State Key laboratory of Separation Membranes and Membrane Processes National Center for International Joint Research on Separation MembranesTiangong UniversityTianjin 300387China School of Textile science and Engineering Tiangong UniversityTianjin 300387China

All-solid-state lithium batteries(ASSLBs),receiving extensive attentions and studies,exhibit better safety,environmental friendliness,stability,wider electrochemical stability window and higher energy density than traditionally liquid lithium *** a variety of inorganic materials,with highly replaceable,the non-lithium metal elements emerge in endlessly and affect performances in diversiform *** to facile preparation,convertible structures and excellent properties,the lithium-containing bimetallic granular materials are often applied as important components of electrolytes in lithium *** this review,in terms of the properties of substituted elements,changing crystal structures,increasing vacancies or defects and improving the interfacial conductions,the roles of metal element substitutions of inorganic particles on the improvement of solid-state electrolytes are *** the applications of substituted strategies in ASSLBs as the host of inorganic particles electrolytes and as fillers or modifications for composite electrolytes are also investigated and *** also summarizes the current concerns and obstacles that need to be broken through,as well as provides a basis guide for the selection and optimization of inorganic particles.

关键词： Metal element substitutions Bimetallic inorganic particles Solid-state electrolytes All-solid-state lithium batteries Mechanisms

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Nanofiber composite Reinforced Organohydrogels for Multifunctional and Wearable Electronics

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Nano-Micro Letters 2023年第10期15卷 287-304页

作者： Jing Wen Yongchuan Wu Yuxin Gao Qin Su Yuntao Liu Haidi Wu Hechuan Zhang Zhanqi Liu Hang Yao Xuewu Huang Longcheng Tang Yongqian Shi Pingan Song Huaiguo Xue Jiefeng Gao School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002People’s Republic of China Testing Center Yangzhou UniversityYangzhou 225002People’s Republic of China Key laboratory of Organosilicon Chemistry and Material technology of Ministry of Education Hangzhou Normal UniversityHangzhou 311121People’s Republic of China College of Environment and Safety Engineering Fuzhou UniversityFuzhou 350116People’s Republic of China Centre for Future materials University of Southern QueenslandSpringfield Central 4300Australia

composite organohydrogels have been widely used in wearable ***,it remains a great challenge to develop mechanically robust and multifunctional composite organohydrogels with good dispersion of nanofillers and strong interfacial ***,multifunctional nanofiber composite reinforced organohydrogels(NCROs)are *** NCRO with a sandwich-like structure possesses excellent multi-level interfacial ***,the synergistic strengthening and toughening mechanism at three different length scales endow the NCRO with outstanding mechanical properties with a tensile strength(up to 7.38±0.24 MPa),fracture strain(up to 941±17%),toughness(up to 31.59±1.53 MJ m~(-3))and fracture energy(up to 5.41±0.63 kJ m~(-2)).Moreover,the NCRO can be used for high performance electromagnetic interference shielding and strain sensing due to its high conductivity and excellent environmental tolerance such as anti-freezing ***,owing to the organohydrogel stabilized conductive network,the NCRO exhibits superior long-term sensing stability and durability compared to the nanofiber composite *** work provides new ideas for the design of high-strength,tough,stretchable,anti-freezing and conductive organohydrogels with potential applications in multifunctional and wearable electronics.

关键词： composite organohydrogel Multi-level interfacial bonding Mechanical properties Strain sensor Electromagnetic interference shielding

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The design and investigation of hydrogel-based metamaterials with ultra large negative hygroscopic expansion ratio

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International Journal of Smart and Nano materials 2022年第1期13卷 114-129,I0007页

作者： Lian-Hua Ma Su-Dong Wang Jia Liu Hong Gao Wei Zhou Non-destructive Testing laboratory School of Quality and Technical SupervisionHebei UniversityBaodingHebei071002China National&local Joint Engineering Research Center of Metrology Instrument and System Hebei UniversityBaodingHebei071002China Hebei Key laboratory of Energy Metering and Safety Testing technology Hebei UniversityBaodingHebei071002China Material Reliability Center China academy of space technologyBeijing100029China

A design strategy for a mechanical metamaterial with large negative hygroscopic expansion(NHE)was proposed in this *** from the reported structures,the present metamaterial is designed by constructing repeated lattice microstructure consisting of curved ligaments incorporating hydrogel active layers and polymer support layers and straight polymer *** immersed in the solution environment,the swelling of hydrogel layer of such composite structure induces the reversed bending of the ligament,leading to the overall ultra-large shrink(negative expansion)deformation of the *** the new structural design,large NHE effects can be *** theoretical investigation and finite element analysis(FEA)were conducted to demonstrate the large negative expansion effects of such *** results showed that the effective NHE ratio of the metamaterial is dependent of the curvature of the curved ligament and the size of both the ligament and the connecting *** ultra-large NHE ratios about−80%for the 2D structure and−90%for the 3D version can be obtained by adopting the structural *** newly designed metamaterials have potential applications in medical and other fields.

关键词： Hydrogel-based metamaterial structural design negative hygroscopic expansion active deformation

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Overcoming oral insulin delivery barriers： application of cell penetrating peptide and silica-based nanoporous composites

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Frontiers of Chemical science and Engineering 2013年第1期7卷 9-19页

作者： Huining HE Junxiao YE Jianyong SHENG Jianxin WANG Yongzhuo HUANG Guanyi CHEN Jingkang WANG Victor C YANG School of Chemical Engineering and technology Tianjin University Tianjin 300072 China Department of Pharmaceutics School of Pharmacy Fudan University Key laboratory of Smart Drug Delivery Ministry of Education & PLA Shanghai 201203 China Shanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai 201203 China School of Environmental science and Engineering State Key Laboratory of Engines Tianjin University Tianjin 300072 China Tianjin Key laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics School of Pharmacy Tianjin Medical University Tianjin 300070 China Department of Pharmaceutical sciences College of Pharmacy University of Michigan Michigan 48109-1065 USA

Oral insulin delivery has received the most attention in insulin formulations due to its high patient compliance and, more importantly, to its potential to mimic the physiologic insulin secretion seen in non-diabetic individuals. However, oral insulin delivery has two major limitations： the enzymatic barrier that leads to rapid insulin degradation, and the mucosal barrier that limits insulin＇s bioavailability. Several approaches have been actively pursued to circumvent the enzyme barrier, with some of them receiving promising results. Yet, thus far there has been no major success in overcoming the mucosal barrier, which is the main cause in undercutting insulin＇s oral bioavailability. In this review of our group＇s research, an innovative silica-based, mucoadhesive oral insulin formulation with encapsulated-insulin/cell penetrating peptide （CPP） to overcome both enzyme and mucosal barriers is discussed, and the preliminary and convincing results to confirm the plausibility of this oral insulin delivery system are reviewed. In vitro studies demonstrated that the CPPinsulin conjugates could facilitate cellular uptake of insulin while keeping insulin＇s biologic functions intact. It was also confirmed that low molecular weight protamine （LMWP） behaves like a CPP peptide, with a cell translocation potency equivalent to that of the widely studied TAT. The mucoadhesive properties of the produced silica-chitosan composites could be controlled by varying both the pH and composition; the composite consisting of chitosan （25wt-%） and silica （75 wt-%） exhibited the greatest mucoadhesion at gastric pH. Furthermore, drugrelease from the composite network could also be regulated by altering the chitosan content. Overall, the universal applicability of those technologies could lead to development of a generic platform for oral delivery of many other bioactive compounds, especially for peptide or protein drugs which inevitably encounter the poor bioavailability issues.

关键词： insulin cell penetrating peptide mucoadhesive composites oral delivery

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Controllable coating NiAl-layered double hydroxides on carbon nanofibers as anticorrosive microwave absorbers

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Journal of materials science & technology 2023年第20期151卷 109-118页

作者： Ying Zhang Liang Li Changlong Du Gengping Wan Qiyi Wei Xueqing Zhou Yanran Su Yang Xu Guizhen Wang State Key laboratory of Marine Resource Utilization in South China Sea School of Chemical Engineering and TechnologyHainan UniversityHaikou 570228China Collaborative Innovation Center of Ecological Civilization Hainan UniversityHaikou 570228China

For harsh real-world service settings,it is essential to build corrosion-resistant,diverse,and effective microwave ***,we successfully prepared a 3D NiAl-layered double hydroxide/carbon nanofibers(NiAl-LDH/CNFs)composite material as an anticorrosive microwave absorber assisted by an atomic layer deposition(ALD)*** size,coating thickness,and content of NiAl-LDH can be readily adjusted by changing the ALD cycling *** optimized NiAl-LDH/CNFs demonstrates prominent microwave absorbing properties including the strongest reflection loss of–55.65 dB and the widest effective absorption bandwidth of 4.80 GHz with only 15 wt%*** reasons for performance improvement are the cooperative effect of interfacial polarization loss,conduction loss,and three-dimensional porous ***,due to the synergistic effects between the excellent impermeability of CNFs and the trapping ability of NiAl-LDH for chloride ions,NiAl-LDH/CNFs exhibits strong corrosion resistances under acidic,neutral,and alkaline ***-LDH/CNFs should be a potential candidate to simultaneously use for microwave absorption and corrosion resistance,and this work provides a certain guiding significance for designing microwave absorbers that satisfy the corrosion resistance.

关键词： Microwave absorption Anticorrosion Atomic layer deposition(ALD) Double layered hydroxides(LDHs) Carbon nanofibers(CNFs)

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Patterns and Dynamics of Rifting on Passive Continental Margin from Shelf to Slope of the Northern South China Sea:Evidence from 3D Analogue Modeling

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Journal of China University of Geosciences 2009年第1期20卷 136-146页

作者：孙珍周蒂吴世敏钟志洪 Myra Keep 姜建群樊浩 Key laboratory of Marginal Sea Geology South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou 510301 China Department of science and technology Shenzhen Branch of CNOOC Guangzhou 510420 China Tectonic Special Research Center University of Western Australia Nedlands WA 6907 Australia Hainan Oil & Gas Exploration Company Liaohe Oilfield of PetroChina Panjin 124010 China)

Affected by thermal perturbation due to mantle uprising, the rheological structure of the lithosphere could be modified, which could lead to different rifting patterns from shelf to slope in a passive continental margin. From the observed deformation style on the northern South China Sea and analogue modeling experiments, we find that the rift zone located on the shelf is characterized by half grabens or simple grabens controlled mainly by long faults with large vertical offset, supposed to be formed with normal lithosphere extension. On the slope, where the lithosphere is very hot due to mantle upweUing and heating, composite grabens composed of symmetric grabens developed. The boundary and inner faults are all short with small vertical offset. Between the zones with very hot and normal lithosphere, composite half grabens composed of half grabens or asymmetric grabens formed, whose boundary faults are long with large vertical offset, while the inner faults are relatively short. Along with the thickness decrease of the brittle upper crust due to high temperature, the deformation becomes more sensitive to the shape of a pre-existing weakness zone and shows orientation variation along strike. When there was a bend in the pre-existing weakness zone, and the basal plate was pulled by a clockwise rotating stress, the strongest deformation always occurs along the middle segment and at the transition area from the middle to the eastern segments, which contributes to a hotter lithosphere in the middle segment, where the Baiyun （白云） sag formed.

关键词： passive continental margin rifting pattern 3D analogue modeling South China Sea.

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FeNi nanoparticles on Mo_(2)TiC_(2)T_(x)MXene@nickel foam as robust electrocatalysts for overall water splitting

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Nano Research 2021年第10期14卷 3474-3481页

作者： Jiayang Wang Peilei He Yongli Shen Linxiu Dai Zhe Li Yue Wu Changhua An Tianjin Key laboratory of Organic Solar Cells and Photochemical Conversion School of Chemistry and Chemical EngineeringTianjin University of TechnologyTianjin 300384China Department of Chemical and Biological Engineering Iowa State UniversityIA 50011USA

The development of cost-effective electrocatalysts for overall water splitting is highly desirable,remaining a critical challenge at current ***,a class of composite FeNi@MXene(Mo_(2)TiC_(2)T_(x))@nickel foam(NF)has been synthesized through introducing Fe2+ions and in-situ combining with surface nickel atoms on nickel *** obtained FeNi@Mo_(2)TiC_(2)T_(x)@NF exhibited high activity with overpotentials of 165 and 190 mV for the hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)at a current density of 10 mA·cm^(-2),*** synergetic effects of Mo_(2)TiC_(2)T_(x)and FeNi nanoalloys lead to increasing catalytic activities,where MXene provides high active surface area and rich active sites for HER,and FeNi nanoalloys promote the *** simulation of electron exchange capacity between FeNi and MXene in FeNi@Mo_(2)TiC_(2)T_(x)catalyst shows that electrons transferred from surface Mo atoms to the interface between FeNi and MXene,indicating that the electrons are accumulated near the FeNi *** kind of electronic distribution facilitates the formation of intermediate of ***,(H++e-)is more inclined onto Mo-Ni interfaces for *** Gibbs free energy changes for H*to HER and potential-limiting step for-OOH intermediate in OER over FeNi@Mo_(2)TiC_(2)T_(x)are much less than those on bare *** catalyst can be further used for overall water splitting in alkaline solution,realizing a current density of 50 mA·cm^(-2)at 1.74 *** work provides a facile strategy to achieve efficient and cheap catalysts for new energy production.

关键词： MXene FeNi water splitting electrocatalysis

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