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Unraveling the reaction mechanisms of electrode materials for sodiumion and potassium‐ion batteries by in situ transmission electron microscopy

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Interdisciplinary Materials 2022年第2期1卷 196-212页

作者： Hong Wang Fang Liu Ruohan Yu Jinsong Wu Nanostructure Research Center(NRC) Wuhan University of TechnologyWuhanHubeiChina State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and EngineeringWuhan University of TechnologyWuhanHubeiChina School of Mathematics and Physics Jingchu University of TechnologyJingmenHubeiChina

Sodium ion batteries(SIBs)and potassium ion batteries(PIBs)have caught numerous attention due to the low cost and abundant availability of sodium and ***,their power density,cycling stability and safety need further improvement for practical *** on the reaction mechanisms and structural degradation when cycling are of great *** situ transmission electron microscopy(TEM)is one of the most significant techniques to understand and monitor electrochemical processes at an atomic scale with real-time *** this review,the current progress in unraveling reaction mechanisms of electrode materials for SIBs and PIBs via in situ TEM is ***,the importance of in situ TEM is ***,based on the three types of electrochemical reaction,i.e.,intercalation reac-tion,conversion reaction and alloying reaction,the structural evolution and reaction kinetics at atomic resolution,and their relation to the electrochemical performance of electrode materials are reviewed and described in ***-nally,future directions of in situ TEM for SIBs and PIBs are ***,the in‐depth understanding revealed by in situ TEM will give an instructive guide in rational design of electrode materials for high performance electrode materials of SIBs and PIBs.

关键词： in situ transmission electron microscopy potassium ion batteries sodiumion batteries

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Potential-Dependent Activities in Interpreting the Reaction Mechanism of Dual-Metal Atom Catalysts for Li-Co2 Batteries

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SSRN 2024年

作者： Liu, Xiaolin Zhou, Mengjun Liao, Xiaobin Zhao, Yan State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China State Key Laboratory of Silicate Materials for Architectures Wuhan University of Science and Technology China

The utilization of CO2 electrochemistry in energy storage has been considered as a promising power source due to its high theoretical energy density, high electrochemical potential, and ability to fix CO2. However, the low efficiency and poor reversibility of Li-CO2 evolution significantly impede the applications of Li-CO2 batteries. Herein, first-principles calculations were employed to investigate the 21 M1M2N4C active sites and explore the catalytic mechanism for the Li-CO2 evolution reaction. The adsorption and activation of CO2 on the thermodynamically stable DACs show that the TM atoms in M1M2N4C center sites with decreasing d-band center appeared to increase CO2 adsorption energy. Among the active sites, the MoMoN4C shows the most robust activation interaction with CO2 due to its high d-center and strong d-p orbital coupling. The implicit solvent CEP simulations verify the effects of dual-atom sites on the products' activities and selectivity by searching the possible reaction pathways toward the battery-discharging processes in the ether electrolyte. The decomposition of *Li2CO3 was simulated by the NEB calculations. The results prove that the MoMoN4C active site can boost the reaction dynamics and exhibit high reversibility for the Li-CO2 battery. © 2024, The Authors. All rights reserved.

关键词： Carbon dioxide

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Threee-dimensionally ordered macroporous materials for pollutants abatement,environmental sensing and bacterial inactivation

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中国科学：化学（英文版） 2023年第7期66卷 1886-1904页

作者： Yang Ding Chun-Hua Wang Jia-Song Zhong Qi-Nan Mao Run-Tian Zheng Yun Hau Ng Ming-Hui Sun Soumyajit Maitra Li-Hua Chen Bao-Lian Su Center of Advanced Optoelectronic Materials College of Materials and Environmental EngineeringHangzhou Dianzi UniversityHangzhou 310018China Laboratory of Inorganic Materials Chemistry(CMI) University of NamurNamur B-5000Belgium School of Energy and Environment City University of Hong KongHong Kong 999000China Center of Advanced Optoelectronic Materials College of Materials and Environmental EngineeringHangzhou Dianzi UniversityHangzhou 310018China Laboratory of Inorganic Materials Chemistry(CMI) University of NamurNamur B-5000Belgium State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Department of Materials University of OxfordOxford OX1 3PHUK Laboratory of Inorganic Materials Chemistry(CMI) University of NamurNamur B-5000Belgium State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Clare Hall University of CambridgeCambridge CB2 1EWUK

Owing to their facile reactants migration channels,large surface area,maximized exposure of reaction sites and efficient light utilization,three-dimensionally ordered macroporous(3DOM)materials have been extensively adopted in environmental fields such as pollutants removal,environmental detection as well as bacterial *** this review,the up-to-date 3DOM materials,the corresponding synthesis protocols and the related environmental applications involving photo/electrocatalytic pollutants decomposition,thermocatalytic volatile organic compounds(VOCs)elimination,hazardous substances sensing and bacteria inactivation are completely ***,the inherent advantages and mechanisms of 3DOM materials in different environmental utilization are thoroughly demonstrated and ***,the improved performance of environmental applications and the methods of fabricating 3DOM materials are correlated in depth,being favorable for readers to obtain the fundamental knowledge and to motivate some innovative thoughts for modifying 3DOM materials with further elevated environmental remediation ***,the current difficulties and prospects of 3DOM materials for large-scale and commercial applications are *** critical review is anticipated to promote the optimization of 3DOM materials and to ripen the related environmental remediation techniques.

关键词： 3DOM environmental remediation catalysis VOCs disinfection

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Extended Phase Homogeneity and Improved Out-of-Plane Charge Transfer in Sb and Te Co-Alloyed N-Type Bise Layered Compound with Extraordinary Thermoelectric Performance

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SSRN 2023年

作者： Yang, Xinru Xie, Chenghao Sun, Jinchang Xu, Weibin Li, Songlin Tang, Xinfeng Tan, Gangjian State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China

BiSe is a promising n-type layered thermoelectric compound near room temperature. However, its full potential is not realized because of its overall high electron density and inferior interlayer charge transport. In this study, we demonstrate that these drawbacks are well addressed by a feasible Sb and Te co-alloying approach. Sb, preferably substituting Bi atoms in the Bi2Se3 quintuplet layer, effectively neutralizing excess electrons of BiSe by suppressing positively charged Se vacancies. On the other hand, Te exclusively replaces Se, and promotes interlayer charge transfer by increasing chemical bond covalency. In addition, Te alloying significantly impedes phonon propagation of BiSe by introducing considerable size and mass disorders. More importantly, it is found that co-alloying expands the phase homogeneity of BiSe, which further intensifies the respective functions of Sb and Te alloying. As a consequence, a peak ZT value of 0.6 at 425 K is realized in the sample Bi0.6Sb0.4Se0.6Te0.4, which is 2.5 times that of pristine BiSe. Our work suggests that Sb and Te co-alloyed BiSe is a robust candidate for thermoelectric application near room temperature. © 2023, The Authors. All rights reserved.

关键词： Charge transfer

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Composition, Structure and Electrochemical Performance of Lisipscl Electrolyte with Li/Li-In Anodes in All-Solid-state Batteries

SSRN

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SSRN 2023年

作者： Zhang, Ji-Wei Wang, Wen-Hao Xie, Meng-Xiang Wu, Hou-Ran Wang, Yan-Pei Bao, Hao-Tian Cao, Bo-Qun Shao, Gang-Qin State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Hubei430070 China

The lithium silicon phosphor sulfo-chloride (LiSiPSCl) with a Li10GeP2S12-type structure is one of the most promising solid electrolytes (SEs) for all-solid-state lithium-ion batteries (ASSLIBs) due to its currently highest ionic conductivity at RT. In this work, three kinds of LiSiPSCl electrolytes, i.e. Li7.59(10)Si1.95(9)P1.65(7)S11.64(1)Cl0.36(1) (SE-450), Li7.67(12)Si1.90(1)P1.67(1)S11.61(2)Cl0.39(2) (SE-475) and Li7.58(5)Si1.75(4)P1.79(2)S11.54(4)Cl0.46(4) (SE-500), were prepared at 450 / 475 / 500 oC for 8 h through a solid-state method. The assembling of blocking / symmetrical / semi-blocking cells and ASSLIBs, and electrochemical measurements were carried out by coupling the three SEs with two kinds of anodes (Li metal and Li-In alloy) and one cathode of LiNbO3-coated LiNi0.8Co0.1Mn0.1O2 (NCM@LNO). Studies were focused on chemical compositions, phase compositions, structure refinements, electrolyte/anode and electrolyte/cathode interfacial stability. Results show that LiSiPSCl electrolytes had favorable interfacial stability with Li-In anode and exhibited low polarization voltage ( © 2023, The Authors. All rights reserved.

关键词： Sulfur compounds

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Synergistically enhancing cycleability and rate performance of sodium titanate nanowire anode via hydrogenation and carbon coating for advanced sodium ion batteries

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Rare Metals 2022年第12期41卷 4075-4085页

作者： De-Liang Ba Wei-Hua Zhu Yuan-Yuan Li Jin-Ping Liu School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074China School of Chemistry Chemical Engineering and Life ScienceState Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of TechnologyWuhan 430070China State Center for International Cooperation on Designer Low-Carbon and Environmental Materials and School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China

Layered alkali-metal titanate materials are considered as attractive anodes for sodium ion batteries due to their favorable safety and low ***,their practical implementation faces major challenges of low electronic conductivity and inevitable volume variation during Na^(+)intercalation and de-intercalation,which are generally difficult to conquer by a single modification ***,a synergistic ally enhancing strategy to promote the electrochemical performance of Na_(2)Ti_(2)O_(5)nanowire array anode via simultaneous hydrogenation and carbon coating is *** leads to partially reduced titanium;together with conductive carbon layer,it endows Na_(2)Ti_(2)O_(5)with fast electron transport and structural *** resulting H-Na_(2)Ti_(2)O_(5)@C anode exhibits enhanced rate capability(8.0C,165 mAh·g^(-1))and stable cycle performance up to 1000 times in sodium-ion half-cells(the capacity of H-Na_(2)Ti_(2)O_(5)without carbon fades drastically after only 100 cycles).In addition,a newcoupling full cell is further designed with graphene hybridized high-voltage Na_(3)(VO_(0.5))_(2)(PO4)_(2)F_(2)as cathode,capable of delivering a high specific energy density of 212.1 Wh·kg^(-1)(based on the mass of both anode and cathode)and good rate and cycling *** work may offer inspiration for synergistic optimization of electrode materials for advanced electrochemical energy storage devices.

关键词： Sodium ion batteries(SIBs) Na2Ti2O5 nanowire Hydrogenation Carbon coating Enhanced performance

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Highly Flexible Graphene-Film-Based Rectenna for Wireless Energy Harvesting

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Energy & Environmental Materials 2024年第2期7卷 320-325页

作者： Jingwei Zhang Yuchao Wang Rongguo Song Zongkui Kou Daping He Hubei Engineering Research Center of RF-Microwave Technology and Application School of ScienceWuhan University of TechnologyWuhan 430070China Sanya Science and Education Innovation Park of Wuhan University of Technology Sanya 572000China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

Herein,we report the design,fabrication,and performance of two wireless energy harvesting devices based on highly flexible graphene macroscopic films(FGMFs).We first demonstrate that benefiting from the high conductivity of up to 1×10^(6)S m^(-1)and good resistive stability of FGMFs even under extensive bending,the FGMFs-based rectifying circuit(GRC)exhibits good flexibility and RF-to-DC efficiency of 53%at 2.1 ***,we further expand the application of FGMFs to a flexible wideband monopole rectenna and a 2.45 GHz wearable rectenna for harvesting wireless *** wideband rectenna at various bending conditions produces a maximum conversion efficiency of 52%,46%,and 44%at the 5th Generation(5G)2.1 GHz,Industrial Long-Term Evolution(LTE)2.3 GHz,and Scientific Medical(ISM)2.45 GHz,respectively.A 2.45 GHz GRC is optimized and integrated with an AMC-backed wearable *** proposed 2.45 GHz wearable rectenna shows a maximum conversion efficiency of 55.7%.All the results indicate that the highly flexible graphene-film-based rectennas have great potential as a wireless power supplier for smart Internet of Things(loT)applications.

关键词： flexible rectennas highly flexible graphene-based films wireless energy harvesting

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Interface passivation engineering for hybrid perovskite solar cells

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Materials Reports(Energy) 2021年第4期1卷 22-33页

作者： Wenjian Shen Yao Dong Fuzhi Huang Yi-Bing Cheng Jie Zhong Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Foshan528216Guangdong ProvincePR China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan430070PR China

The allure of high efficiency and low-temperature solution-processed organic-inorganic hybrid perovskite solar cells(PSCs)are inspiring scientists to seek for its *** passivation engineering has become an effective way to further enhance the efficiency and stability of PSCs by defect passivation,reduces the charge recombination and ion migration initiation and hysteresis control,***,we have summarized the effects and recent research progress of interface passivation engineering in *** passivation layers can be realized by using the solution and/or vacuum evaporation processes which are very adaptable to varied materials with different properties and fabrication processes for enhanced photovoltaic performance and stability.

关键词： Perovskite solar cells Charges recombination Interface passivation engineering Hysteresis effect PSCs stability Solution processes Vacuum evaporation

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Flexible coatings with microphase separation structure attained by copolymers and ultra-fine nanoparticles for endurable antifouling

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Journal of Materials Science & technology 2021年第23期82卷 179-186页

作者： Zhuo Chen Shun Chen Yufei Xiong Yuping Yang Yang Zhang Lijie Dong State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Center for Smart Materials and DevicesWuhan University of TechnologyWuhan430070China School of Civil Engineering Architecture and EnvironmentHubei University of TechnologyWuhan430068China

Incorporating antibacterial agent into biomimetic coating inspired by natural organisms with micronano structure surface has generated more interest for antifouling *** this work,poly(dimethylsiloxane)(PDMS)-based triblock copolymers and sub-20 nm nanoparticles Ag and heterogeneous Fe_(3)O_(4)-coated Ag(Fe_(3)O_(4)@Ag)were used to construct microphase separation topography with oriented copolymer blocks *** artificial surface was verified by atomic force microscopy and scanning electron microscopy ***,the surface exhibited relative stable hydrophobic property,which was demonstrated by the water contact angle and dynamic air-bubble contact angle ***,after immersed in BSA solution 24 h and 720 h,the actual BSA absorption amount of the surface with Fe_(3)O_(4)@Ag nanoparticles was as low as 10%and 27%that of the initial BSA amount,***,the surface also showed remarkable antibacterial performance,which effectively suppressed the growth rate of Escherichia *** strategy of constructing the flexible micro p hase separation structure by introducing heterogeneous inorganic antibacterial nanoparticles into a block copolymer substrate opens up a new way to create an antifouling surface coating.

关键词： Microphase separation topography Ultra-fine nanoparticles Antifouling surfaces Antibacterial performance

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Deposition of IrO_(2) on Nb-doped SnO_(2) as Electrocatalysts for Oxygen Evolution Reactions

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Journal of Wuhan University of technology(Materials Science) 2022年第6期37卷 1180-1184页

作者： SONG Xuyan HE Yunlu PENG Sanwen WANG Bo DONG Ping TANG Haolin YU Jun China Tobacco Hubei Industrial Co. LtdWuhan 430051China China Tobacco Hubei Industrial Cigarette Materials Co. LtdWuhan 430051China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

We reported sol-gel-derived Nb-doped SnO_(2) which is an effective catalyst carrier for deposition of IrO_(2),and the electrocatalytic activity of the synthesized catalysts for OER was *** is found that the doping of Nb can refine the SnO_(2) crystal grains and improve the electrical conductivity of SnO_(2).When the doping amount of Nb is 7%,the electrical conductivity of Nb-SnO_(2) reaches a maximum value of 3.54 S/*** the increase in the loading amount of IrO_(2),the electrocatalytic activity towards OER of the thus-synthesized catalysts is improved,reaching a comparable OER activity with pristine IrO_(2) with the loading content of about 44wt%.

关键词： electrolysis iridium oxygen evolution Nb-SnO_(2)

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