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Boosting the polysulfide confinement in B/N–codoped hierarchically porous carbon nanosheets via Lewis acid–base interaction for stable Li–S batteries

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Journal of Energy Chemistry 2020年第12期29卷 90-100页

作者： Dong-Gen Xiong Ze Zhang Xiao-yun Huang Yan Huang Ji yu Jian-Xin Cai zhen-yu yang College of Chemistry Key laboratory of Jiangxi Province for Environment and Energy CatalysisNanchang UniversityNanchang 330031 JiangxiChina

Carbon materials have shown remarkable usefulness in facilitating the performance of insulating sulfur cathode for lithium–sulfur batteries owing to their excellent conductivity and porous structure. However,the anxiety is the poor affinity toward polar polysulfides due to the intrinsic nonpolar surface of ***, we report a direct pyrolysis of the mixture urea and boric acid to synthesize B/N–codoped hierarchically porous carbon nanosheets(B–N–CSs) as efficient sulfur host for lithium–sulfur battery. The graphene–like B–N–CSs provides high specific surface area and porous structure with abundant micropores(1.1 nm) and low–range mesopores(2.3 nm), thereby constraining the sulfur active materials within the pores. More importantly, the codoped B/N elements can further enhance the polysulfide confinement through strong Li–N and B–S interaction based on the Lewis acid–base theory. These structural superiorities significantly suppress the shuttle effect by both physical confinement and chemical interaction, and promote the redox kinetics of polysulfide conversion. When evaluated as the cathode host, the S/B–N–CSs composite displays the excellent performance with a high reversible capacity up to 772 m A h g–1 at 0.5 C and a low fading rate of ^0.09% per cycle averaged upon 500 cycles. In particular, remarkable stability with a high capacity retention of 87.1% can be realized when augmenting the sulfur loading in the cathode up to 4.6 mg cm^(-2).

关键词： Lithium–sulfur batteries Porous carbon nanosheets B/N–codoped Lewis acid–base Bimodal–pore structure

Strenghening mechanism of graphene/Ni nanolayered composite nanowires under uniaxial compression

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Science China(Physics,Mechanics & Astronomy) 2016年第3期59卷 107-108页

作者： zhen yu yang Jian Sun Zi Xing Lu Wen Jun Hu Institute of Solid Mechanics Beihang University Institute of Structure Mechanics China Academy of Engineering Physics

Dear Editors,Graphene exhibits excellent mechanical properties and at- tracts great attention and intensive study in applied physics and material science [1]. In particular, the extreme sur- face-to-volume ratio of graphene makes it possible to be an ideal reinforcement for nanocomposites. Over the past dec- ade, researchers have synthesized graphene-based nano- composites with superior mechanical properties [2]. Kim et al. [3] recently successfully fabricated Cu- and Ni- matrices nanolayered composites reinforced by only a single layer of graphene and the experiments showed that the strength of the composites can be highly enhanced. As a consequence, the strengthening mechanisms of graphene/metal nanolay- ered composites aroused great interest in recent years.

关键词：纳米线石墨压缩机制纳米复合单轴复合材料镍材料科学

Uncovering the prominent role of satellite cells in paravertebral muscle development and aging by single-nucleus RNA sequencing

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Genes & Diseases 2023年第6期10卷 2597-2613页

作者： Xin Qiu Hao-yu Wang zhen-yu yang Li-Ming Sun Shu-Nan Liu Chui-Qin Fan Feng Zhu Department of Spinal Surgery The University of Hong Kong-Shenzhen HospitalShenzhenGuangdong 518000China Department of Orthopedics and Traumatology Li Ka Shing Faculty of MedicineThe University of Hong KongHong Kong SAR 999077China College of Life Sciences University of Chinese Academy of SciencesBeijing 100000China Lars Bolund Institute of Regenerative Medicine Qingdao-Europe Advanced Institute for Life SciencesBGI-QingdaoQingdaoShandong 266000China China Medical University ShenyangLiaoning 110000China Department of Plastic and Reconstructive Surgery Xijing HospitalForth Military Medical UniversityXi'anShaanxi 710000China

To uncover the role of satellite cells(SCs)in paravertebral muscle development and aging,we constructed a single-nucleus transcriptomic atlas of mouse paravertebral muscle across seven timepoints spanning the embryo(day 16.5)to old(month 24)*** cell types,including SCs,fast muscle cells,and slow muscle cells,were *** energy metabolism-related gene set,TCA CYCLE IN SENESCENCE,was enriched in ***-two skeletal muscle disease-related genes were highly expressed in SCs and exhibited similar expression *** them,Pdha1 was the core gene in the TCA CYCLE IN SENESCENCE;Pgam2,Sod1,and Suclg1 are transcription factors closely associated with skeletal muscle energy *** factor enrichment analysis of the 42 genes revealed that Myod1 and Mef2a were also highly expressed in SCs,which regulated Pdha1 expression and were associated with skeletal muscle *** findings hint that energy metabolism may be pivotal in SCs development and *** ligand-receptor pairs of extracellular matrix(ECM)-receptor interactions,Lamc1-Dag1,Lama2-Dag1,and Hspg2-Dag1,may play a vital role in SCs interactions with slow/fast muscle cells and SCs ***,we built the first database of a skeletal muscle single-cell transcriptome,the Musculoskeletal Cell Atlas(http://***),which lists 630,040 skeletal muscle cells and provides interactive visualization,a useful resource for revealing skeletal muscle cellular heterogeneity during development and *** study could provide new targets and ideas for developing drugs to inhibit skeletal muscle aging and treat skeletal muscle diseases.

关键词： Niche Paraspinal muscle Satellite cells Senescence Single-nucleus RNA sequencing

Potential protection of indocyanine green on parathyroid gland function during near-infrared laparoscopic-assisted thyroidectomy: A case report and literature review

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World Journal of Clinical Cases 2020年第21期8卷 5480-5486页

作者： Shu-Jia Peng Ping yang Yan-Ming Dong Lin yang zhen-yu yang Xi-E Hu Guo-Qiang Bao Department of General Surgery Tangdu HospitalAir Force Military Medical UniversityXi’an 710032Shannxi ProvinceChina

BACKGROUND In recent decades,significant advances have been made in protecting the parathyroid glands and recurrent laryngeal nerves during ***,reliable and convenient technical means are still *** this study,the reliability,safety and feasibility of near-infrared(NIR)laparoscopyassisted thyroid lobectomy with isthmectomy and prophylactic central lymph node dissection(CLND)were *** SUMMARY A 63-year-old female patient with a free previous medical history,was admitted to our department due to multiple thyroid *** examination suggested diffuse thyroid changes and one thyroid nodule in the right upper lobe with the largest diameter of 1.5 cm adjacent to the trachea and Breast Imaging Reporting and Data System grade *** examination of the neck showed no obvious enlarged lymph *** needle aspiration biopsy suggested a papillary thyroid *** with thyroid function examination,the patient was diagnosed with papillary thyroid carcinoma and Hashimoto's *** the risk of invading the capsule and the patient's extreme anxiety,a right thyroid lobectomy with isthmectomy and prophylactic CLND was *** significant abnormalities were found during preoperative examinations,except for an increased thyroid stimulating hormone *** patient underwent NIR laparoscopy-assisted thyroid lobectomy with isthmectomy and prophylactic *** the operation,two right parathyroid glands(PGs)adjacent to the thyroid gland capsule and the right recurrent laryngeal nerve(RLN)were examined by indocyanine green(ICG)fluorescence using a NIR fluorescence camera,and the PGs and RLN were reliably *** the ICG-positive PG,prophylactic CLND was *** postoperative parathyroid hormone level was in the normal range and no significant hypocalcemia symptoms were *** During NIR laparoscopy-assisted thyroidectomy,ICG fluorescence may aid PG identification and protecti

关键词： Indocyanine green Near-infrared laparoscopy Carbon nanoparticles Hypoparathyroidism Thyroidectomy Case report

Neoadjuvant targeted therapy for apocrine carcinoma of the breast:A case report

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World Journal of Clinical Cases 2020年第23期8卷 6036-6042页

作者： Ping yang Shu-Jia Peng Yan-Ming Dong Lin yang zhen-yu yang Xi-E Hu Guo-Qiang Bao Department of General Surgery Tangdu HospitalAir Force Military Medical UniversityXi’an 710032Shaanxi ProvinceChina

BACKGROUND Apocrine carcinoma of the breast is a special type of invasive ductal carcinoma of the breast that is rare in clinical *** therapy,especially neoadjuvant targeted therapy,has rarely been reported for apocrine carcinoma of the *** SUMMARY A 63-year-old woman presented with apocrine carcinoma of the left breast underwent core needle *** patient was diagnosed with apocrine carcinoma by immunohistochemical staining and negative hormone status(estrogen receptor and progesterone receptor)but showed overexpression of human epidermal factor receptor 2(HER-2).Moreover,positive expression of androgen receptor(approximately 60%)and gross cystic disease fluid protein 15 was *** patient was treated with neoadjuvant targeted therapy consisting of the TCH regimen(docetaxel,carboplatin area under curve 6 and trastuzumab)every 21 *** mass in the left breast was significantly reduced,and pain in the breast and left upper arm also *** HER-2 positive apocrine carcinoma of the breast can be improved by neoadjuvant chemotherapy combined with targeted therapy.

关键词： Breast neoplasm ErbB-2 receptor Targeted therapy Case report Apocrine gland Neoadjuvant therapies

Influence of platform position on stray grain nucleation in Ni-based single-crystal dummy blade clusters

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China Foundry 2021年第5期18卷 442-449页

作者： zhen-yu yang Chen-guang Liu Song-song Hu Su-jie zheng yu-shi Luo Shen-long Dai Science and Technology on Advanced High Temperature Structural Materials Laboratory Beijing Institute of Aeronautical MaterialsBeijing 100095China School of Materials Science and Engineering Xiangtan UniversityXiangtan 411105HunanChina

Stray grains are the most severe of the solidification defects that occur in the industrial single-crystal blade preparation *** this study,a single-crystal dummy blade cluster with different crystal orientations controlled by the seeding method was prepared,and the influence of the position of the circular platform(relative to the sample and furnace body)on stray grain nucleation was *** show that the microstructure of the circular platforms could be divided into the center,expansion,and stray grain *** inside of the circular platform facing the center of the cluster is more prone to stray grain formation than the outside of the circular platform facing the furnace *** an increase in the distance between the circular platform and the bottom of the dummy blade cluster,the stray grain region expands,whereas the expansion region *** stray grain is slightly aggravated with increase of the ***,the mechanism underlying the influence of platform position on the formation of stray grains in single-crystal dummy blade clusters is discussed based on the temperature evolution during directional solidification.

关键词： Ni-based single-crystal superalloy directional solidification stray grain nucleation dummy blade cluster

Tuning single-phase medium-entropy oxides derived from nanoporous NiCuCoMn alloy as a highly stable anode for Li-ion batteries

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Rare Metals 2023年第9期42卷 2982-2992页

作者： zhen-yang yu Qi Sun Hao Li Zhi-Jun Qiao Wei-Jie Li Shu-Lei Chou Zhi-Jia Zhang Yong Jiang School of Mechanical Engineering Tiangong UniversityTianjin300387China State Key Laboratory for Powder Metallurgy Central South UniversityChangsha410083China School of Material Science and Engineering Tiangong UniversityTianjin300387China School of Electronic and Information Engineering Institute of Quantum Materials and DevicesTiangong UniversityTianjin300387China

Incorporating four cations into a single-phase oxide is beneficial for maintaining structural stability during Li+insertion/desertion because of the produced entropy-dominated phase stabilization effects. However,medium-entropy oxides exhibit inherently poor electron and ion conductivity. As such, in this work, a single-phase medium-entropy oxide of Ni_(x)Cu_(y)CozMn_(1-x-y-z)O(named as NCCM@oxides(H_(2))) is prepared by modified-NiCuCoMn alloy through the epitaxial-growing-based self-combustion and hydrogen reduction. During hydrogen reduction, some Cu ions are reduced to elemental Cu(defined as Cu^(0)),which is distributed among the metal oxides, while generating extensive oxygen vacancies around Cu. The synergetic effect between nanoporous metal-core oxide-shell structure and enriched oxygen/Cu^(0) vacancies greatly enhances the electronic/ionic conductivity. In addition, the lattice of single-phase quaternary metal oxides has the configuration entropy stability, which enables the rock-salt structure to remain stable during repeated conversion reactions. Benefiting from the above-mentioned merits, the anodeforLi-ionbatterieswithentropy-stabled NCCM@oxides(H_(2)) composite shows a high specific capacity of 699 mAh·g^(-1) at 0.1 A·g^(-1) and ultra-stable cycling stability, which maintains 618 and 489 mAh·g^(-1) at 0.1 and 1.0 A·g^(-1) after 200 cycles, respectively. This is the first use of this novel and simple strategy for modifying medium-entropy oxides, which paves the way for the development of high-entropy oxides as high-performance electrodes.

关键词： NiCuCoMn alloy Medium-entropy oxides Li-ion batteries Ultrahigh stability Mechanism

Optimized valence state of Co and Ni in high-entropy alloy for high active-stable OER

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Rare Metals 2023年第11期42卷 3607-3613页

作者： Zhi-Jia Zhang Jun-Peng Guo Shi-Hao Sun Qi Sun yu-Wen Zhao Yi-Fang Zhang zhen-yang yu Chun-Sheng Li Yan Sun Meng-Meng Zhang Yong Jiang School of Materials Science and Engineering State Key Laboratory of Separation Membrane and Membrane ProcessesTiangong UniversityTianjin300387China School of Electronic and Information Engineering Institute of Quantum Materials and DevicesTiangong UniversityTianjin300387China School of Mechanical Engineering Tiangong UniversityTianjin300387China School of Chemistry and Life Sciences Key Laboratory of Advanced Electrode Materials for Novel Solar Cells for Petroleum and Chemical Industry of ChinaSuzhou University of Science and TechnologySuzhou215009China

High entropy alloy(HEA)exhibits potential water-splitting properties but are limited by the high energy consumption from ***,the complex atomic distribution endows the electronic structure regulation of HEA to remain ***,the nanoporous NiCuMnCoFe(np-NCMCF)HEA was prepared by the high-energy ball milling coupled with de-alloying *** introduced Fe markedly increases the proportion of Ni^(3+)and Co^(3+).

关键词： alloy alloying entropy

Nonsolvent-induced phase separation-derived TiO_(2) nanotube arrays/porous Ti electrode as high-energy-density anode for lithium-ion batteries

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Rare Metals 2021年第2期40卷 393-399页

作者： Zhi-Jia Zhang Jun Zhao Zhi-Jun Qiao Jia-Min Wang Shi-Hao Sun Wen-Xing Fu Xi-yuan Zhang zhen-yang yu yu-Hai Dou Jian-Li Kang Ding yuan yue-Zhan Feng Jian-Min Ma State Key Laboratory of Separation Membrane and Membrane Processes Tianjin Municipal Key Laboratory of Advanced Fibers and Energy StorageSchool of Materials Science and EngineeringSchool of Mechanical EngineeringTiangong UniversityTianjin300387China Centre for Clean Environment and Energy Gold Coast CampusGriffith UniversityGold Coast4222Australia Key Laboratory of Materials Processing and Mold Ministry of EducationZhengzhou UniversityZhengzhou450002China Key Laboratory for Micro-/Nano-Optoelectronic Devices Ministry of EducationSchool of Physics and ElectronicsHunan UniversityChangsha410022China

TiO_(2) nanotube arrays,growing on three-dimensional(3 D)porous Ti membrane,were synthesized using a facile nonsolvent-induced phase separation and anodization *** length of those three-dimensional nanotube arrays could be tuned by prolonging the anodizing *** the anodizing time is 8 h,the three-dimensional TiO_(2) nanotube arrays/porous Ti electrode exhibits well cycling stability and ultra-high specific capacity,which is used in lithium-ion batteries,attributed to the high utilization rate of the substrate and the high growth intensity of the active ***-dimensional TiO_(2) nano tube arrays/porous Ti electrode,at 100μA·cm^(-2) with 8 h anodizing time,shows a typical discharge plateau at 1.78 V and exhibits the specific capacity with 2126.7μAh·cm^(-2),The novel nanotube arrays@3 D porous architecture effectively shortens the electron/ion transmission path,which could pave way for optimizing the design of highperformance anode materials for next-generation energy storage system.

关键词： TiO2 nanotube arrays Nonsolvent-induced phase separation Anodization Anode Lithium-ion battery