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Energy & Environmental Materials 2024年第1期7卷 68-76页

作者： Yusi Lei Liang Yue Yuruo Qi Yubin Niu shujuan bao Jie Song Maowen Xu Faculty of Materials and Energy Institute for Clean Energy&Advanced MaterialsSouthwest UniversityChongqing 400715China Shandong Zero-One-Four Advanced Materials Co. Ltd.Feicheng 271099China

Sodium dentrite formed by uneven plating/stripping can reduce the utilization of active sodium with poor cyclic stability and,more importantly,cause internal short circuit and lead to thermal runaway and ***,sodium dendrites and their related problems seriously hinder the practical application of sodium metal batteries(SMBs).Herein,a design concept for the incorporation of metal-organic framework(MOF)in polymer matrix(polyvinylidene fluoride-hexafluoropropylene)is practiced to prepare a novel gel polymer electrolyte(PH@MOF polymer-based electrolyte[GPE])and thus to achieve high-performance *** addition of the MOF particles can not only reduce the movement hindrance of polymer chains to promote the transfer of Na^(+)but also anchor anions by virtue of their negative charge to reduce polarization during electrochemical reaction.A stable cycling performance with tiny overpotential for over 800 h at a current density of 5 mA cm^(-2)with areal capacity of 5 mA h cm^(-2)is achieved by symmetric cells based on the resulted GPE while the Na_(3)V_(2)O_(2)(PO_(4))_(2)F@rGO(NVOPF)|PH@MOF|Nacell also displays impressive specific cycling capacity(113.3 mA h g^(-1)at 1 C)and rate capability with considerable capacity retention.

关键词： dendrite-free gel polymer electrolyte metal organic framework sodium batteries

Nano-Ni-Induced Electronic Modulation of MoS_(2) Nanosheets Enables Energy-Saving H_(2) Production and Sulfide Degradation

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Energy & Environmental Materials 2024年第3期7卷 228-235页

作者： Fan Liu Xinghong Cai Yang Tang Wenqian Liu Qianwei Chen Peixin Dong Maowen Xu Yangyang Tan shujuan bao Institute for Clean Energy&Advanced Materials School of Materials and EnergySouthwest UniversityChongqing 400715China

Electrocatalytic hydrogen evolution and sulfion(S^(2-))recycling are promising strategies for boosting H_(2)production and removing environmental ***,a nano-Ni-functionalized molybdenum disulfide(MoS_(2))nanosheet was assembled on steel mesh(Ni-MoS_(2)/SM)for use in sulfide oxidation reaction-assisted,energy-saving H_(2)*** and theoretical calculation results revealed that anchoring nano-Ni on high-surface-area slack MoS_(2)nanosheets not only optimized catalyst adsorption of polysulfides but also played an important role in promoting hydrogen evolution reaction kinetics by absorbing OH_(ad),thereby greatly enhancing the catalytic performance toward sulfide oxidation reaction and hydrogen evolution ***,the Ni/MoS^(2-)based hydrogen evolution reaction+sulfide oxidation reaction system achieved nearly 100%hydrogen production efficiency and only consumed 61%less power per kWh than the oxygen evolution reaction+hydrogen evolution reaction system,which suggested our proposed Ni-MoS_(2)and novel hydrogen production system are promising for sustainable energy production.

关键词： hydrogen evolution reaction low energy consumption molybdenum disulfide sulfide oxidation reaction

Effects of Reaction Temperature on Microstructure and Advanced Pseudocapacitor Properties of NiO Prepared via Simple Precipitation Method

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Nano-Micro Letters 2013年第4期5卷 289-295页

作者： Qiangqiang Sun shujuan bao Institute for Clean Energy & Advanced Materials Southwest University

Morphology-controlled synthesis and large-scale self-assembly of nanoscale building blocks into complex nanoarchitectures is still a great challenge in nanoscience. In this work, various porous NiO nanostructures are obtained by a simple ammonia precipitation method and we find that the reaction temperature has a significant impact on their microstructures. Nanoflowers and nanoflakes have been obtained at 0 and50, while, weakly self-assembly nanoflowers with nanoflakes are formed at 20. In order to understand the process-structure-property relationship in nanomaterial synthesis and application, the as-prepared NiO is used as supercapacitor electrode materials, and evaluated by electrochemical measurement. The experimental results indicate that the material obtained at lower temperature has higher pseudocapacitance, the specific capacitance of 944, 889 and 410 F/g are reached for the materials prepared at 0, 20 and 50 and further calcined at 300, respectively. While the material obtained at higher temperature has excellent rate capacity. This offers us an opportunity searching for exciting new properties of NiO, and be useful for fabricating functional nanodevices.

关键词： Nickel oxide Temperature Morphology Pseudocapacitor

MoP nanoparticles with a P-rich outermost atomic layer embedded in N-doped porous carbon nanofibers： Self-supported electrodes for efficient hydrogen generation

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Nano Research 2018年第9期11卷 4728-4734页

作者： Minqiang Wang Cui Ye Maowen Xu shujuan bao Institute for Clean Energy & Advanced Materials Faculty of Materials and Energy Southwest University Chongqing 400715 China Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education) School of Chemistry and Chemical Engineering Southwest University Chongqing 400715 China

Despite being pursued for a long time, hydrogen production via water splitting is still a huge challenge mainly due to a lack of durable and efficient catalysts. Molybdenum phosphide （MOP） is theoretically capable of efficient hydrogen evolution reaction （HER） catalysis, however, there is still room for further improvement in its performance. Herein, we propose a design for MoP with a P-rich outermost atomic layer for enhancing HER via complementary theoretical and experimental validation. The correlation of computational results suggests that the P-terminated surface of MoP plays a crucial role in determining its high-efficiency catalytic properties. We fabricated a P-rich outermost atomic layer of MoP nanoparticles by using N-doped porous carbon （MoP@NPCNFs） to capture more P on the surface of MoP and limit the growth of nanoparticles. Further, the as-prepared material can be directly employed as a self-supported electrocatalyst, and it exhibits remarkable electrocatalytic activity for HER in acidic media; it also reveals excellent long-term durability for up to 5,000 cycles with negligible loss of catalytic activity.

关键词： P-rich outermost atomiclayer molybdenum phosphide density function theor^self-supported electrocatalyst hydrogen evolution reaction

Immobilization of PANI on Mesoporous Carbon： Preparation and Supercapacitor Performance

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Transactions of Nanjing University of Aeronautics and Astronautics 2018年第4期35卷 630-638页

作者： Li Jinjin Liu Yang Li Kunyang bao shujuan Urban Vocational College of Sichuan Chengdu 610101 P.R. China Institute for Clean Energy & Advanced Materials Faculty of Materials and Energy Southwest UniversityChongqing 400715 P.R. China

Polyaniline(PANI)was effectively immobilized on the surface of ordered mesoporous carbon(OMC)by using Mn_2O_3 as sacrificial *** observed microstructure and morphology indicate that a thin layer of PANI was coated on OMC *** a supercapacitor electrode material,the discharge capacity of the optimized PANI/OMC could reach 467 F/g,which is far higher than that of OMC,PANI and Mn_2O_3/***,PANI/OMC composites with different content of PANI are obtained by adjusting the amount of Mn_2O_3 on OMC and their properties are *** results show that a thin layer of PANI can improve the capacity of PANI/OMC composites effectively and the further increase of PANI reduces the capacity of PANI/OMC *** sacrificial template method presented here is beneficial to coating a layer of polymer on carbon materials,and the content of polymer layer can be controlled by adjusting the amount of Mn_2O_3 in Mn_2O_3/OMC.

关键词： Mn2O3 sacrificial template polyaniline(PANI) supercapacitor

Analysis of graphene-like activated carbon derived from rice straw for application in supercapacitor

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Chinese Chemical Letters 2017年第12期28卷 2290-2294页

作者： Kevin Monthiego Horax shujuan bao Minqiang Wang Yanan Li Institute for Clean Energy&Advanced Materials Faculty of Materials EnergySouthwest UniversityChongqing 400715China

Activated carbons with large surface area, abundant microporosity and low cost are the most commonly used electrode materials for energy storage devices. However, activated carbons are conventionally made from fossil precursors, such as coal and petroleum, which are limited resources and easily aggregate large block in high temperature carbonization processes. In this novel work, we examined the use of rice straw as a potential alternative carbon source precursor for the production of graphene-like active carbon. A very slack activated carbon with ultra-thin two-dimensional （2D） layer structure was prepared by our proposed approach in this work, which includes a pre-treatment process and potassium hydroxide activation at high temperatures. The obtained active carbon derived from rice straw exhibited a capacitance of 255 Fig at 0.5 A/g, excellent rate capability, and long cycling capability （98% after 10,000 cycles）.

关键词： Rice straw Graphene-like Activated carbon Supercapacitor 2D-layer

A high-durability aqueous Cu-S battery assisted by pre-copper electrochemistry

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Nano Research 2023年第7期16卷 9553-9560页

作者： Jing Zhao Yuruo Qi Tian Huang Yi Zhang Peipei Zhi shujuan bao Maowen Xu School of Materials and Energy Southwest UniversityChongqing 400715China Chongqing Key Lab for Advanced Materials and Clean Energies of Technologies Southwest UniversityChongqing 400715China Chongqing Municipal Engineering Research Center of Institutions of Higher Education for Special Welding Materials and Technology Chongqing University of technologyChongqing 400054China

Although research interest in aqueous metal-sulfur batteries(AMSs)has surged due to their intrinsic low cost and high capacity,the practical application of AMSs remains a considerable challenge because of the restrictive cycling *** circumvent this issue,we propose an innovative and simple pre-copper strategy to realize a high-durability aqueous Cu-S *** precopper strategy can effectively promote a stable metal dissolution/deposition,compensate for charge carriers,and facilitate reaction kinetics during the subsequent *** a result,the aqueous Cu-S battery when coupled with S-decorated porous Ti_(3)C_(2)(S-d-Ti_(3)C_(2))exhibits excellent electrochemical performance,delivering a highly reversible capacity of 1805.4 mAh·g^(-1)in the initial cycle at 0.8 A·g^(-1),impressive cycling stability with 90.2%capacity retention over 800 cycles,and ultralow polarization~0.08 V even at a high current density of 3.1 A·g^(-1).The findings obtained in this work could pave the way for the design of highperformance sulfur-based aqueous batteries,which fill the vacancy of the necessary metal anode,delivering merits in both cost and cycle life.

关键词： aqueous metal-sulfur batteries pre-copper treatment irreversible capacity loss electrochemical performance

Engineering the high-entropy phase of Pt-Au-Cu nanowire for electrocatalytic hydrogen evolution

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Nano Research 2023年第8期16卷 10742-10747页

作者： Yanan Yu Guangdong Liu Shuaihu Jiang Ruya Zhang Huiqiu Deng Eric AStach shujuan bao Zhenhua Zeng Yijin Kang Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China School of Physics and Electronics Hunan UniversityChangsha 410082China Department of Materials Science and Engineering University of PennsylvaniaPhiladelphiaPA 19104USA Institute for Clean Energy&Advanced Materials School of Materials and EnergySouthwest UniversityChongqing 400715China Davidson School of Chemical Engineering Purdue UniversityWest LafayetteIN 47907USA

Hydrogen economy,as the most promising alternative energy system,relies on the hydrogen production through sustainable water splitting which in turn relies on the high efficiency *** A1-phase alloy has been predicted to be a promising electrocatalyst for the hydrogen *** such preferred phase of Pt-Au-Cu is not thermodynamically favored,herein,we stabilize PtAuCu alloy by engineering the high-entropy phase in the form of *** functional theory(DFT)calculations indicate that,in comparison with the ordered phase and segregated phases with discrete hydrogen binding energy,the high-entropy phase provides a diverse combination of site composition to continuously tune the hydrogen binding energy,and thus generate a series of highly active sites for the hydrogen *** the theoretical prediction,electrochemical tests show that the A1-phase PtAuCu nanowire significantly outperforms its nanoparticle counterpart with phase segregation,toward the electrocatalysis of hydrogen evolution,offering one of the best hydrogen evolution electrocatalysts.

关键词： hydrogen evolution reaction phase engineering high entropy alloys

A pregnant patient with type II osteogenesis imperfecta pregnancy

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World Journal of Emergency Medicine 2024年第1期15卷 75-76页

作者： Chenyu Jiang Chenyi bao shujuan Shu Department of Obstetrics Women’s HospitalSchool of MedicineZhejiang UniversityHangzhou 310006China

Osteogenesis imperfecta(OI)is a primary bone fragility disorder with an estimated prevalence of 1/15,000 births and is a hereditary syndrome characterized by one or more of the following:fractures,blue sclerae,impaired hearing,defective dentition,and hyperlaxibility throughout life.[1,2]We report a pregnant woman with type II OI and review her prenatal counseling,diagnosis,and pregnancy management to assist obstetricians in understanding the disease and managing it in emergency situations.

关键词： pregnancy impaired diagnosis

Interfacial engineering of Ni/V2O3 for hydrogen evolution reaction

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Nano Research 2020年第9期13卷 2407-2412页

作者： Yang Chen Yuan Rao Rongzhi Wang Yanan Yu Qiulin Li shujuan bao Maowen Xu Qin Yue Yanning Zhang Yijin Kang Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China Key Laboratory of Luminescent and Real-Time Analytical Chemistry Ministry of EducationInstitute for Clean Energy and Advanced MaterialsFaculty of Materials and EnergySouthwest UniversityChongqing 400715China

Electrocatalytic water splitting offers a sustainable route for hydrogen production,enabling the clean and renewable alternative energy system of hydrogen *** scarcity and high-cost of platinum-group-metal(PGM)materials urge the exploration of high-performance non-PGM ***,a unique hierarchical structure of NiA/2O3 with extraordinary electrocatalytic performance(e.g.t overpotentials as low as 22 mV at 20 mA·cm^-2 and 94 mV at 100 mA·cm^-2)toward hydrogen evolution reaction in alkaline electrolyte(1 M KOH)is *** investigation on the hierarchical NiA/2O3 with a bimodal size-distribution also offers insight of interfacial engineering that only proper NiA/2O3 interface can effectively improve H20 adsorption,H20 dissociation as well as H adsorption,for an efficient hydrogen production.

关键词： hydrogen evolution reaction hierarchical materials interface electrocatalysis vanadium oxide