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Interface Engineering via Ti_(3)C_(2)T_(x) MXene Electrolyte Additive toward Dendrite-Free Zinc Deposition

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Nano-Micro Letters 2021年第6期13卷 95-107页

作者： Chuang Sun Cuiping Wu xingxing gu Chao Wang Qinghong Wang School of Chemistry and Materials Science Jiangsu Normal UniversityXuzhouJiangsu 221116P.R.China Faculty of Engineering and Environment Northumbria UniversityNewcastle upon Tyne NE18STUK Chongqing Key Laboratory of Catalysis and New Environmental Materials College of Environment and ResourcesChongqing Technology and Business UniversityChongqing 400067P.R.China

Zinc metal batteries have been considered as a promising candidate for next-generation batteries due to their high safety and low ***,their practical applications are severely hampered by the poor cyclability that caused by the undesired dendrite growth of metallic ***,Ti_(3)C_(2)T_(x) MXene was first used as electrolyte additive to facilitate the uniform Zn deposition by controlling the nucleation and growth process of *** MXene additives can not only be absorbed on Zn foil to induce uniform initial Zn deposition via providing abundant zincophilic-O groups and subsequently participate in the formation of robust solid-electrolyte interface film,but also accelerate ion transportation by reducing the Zn^(2+) concentration gradient at the electrode/electrolyte ***,MXene-containing electrolyte realizes dendrite-free Zn plating/striping with high Coulombic efficiency(99.7%)and superior reversibility(stably up to 1180 cycles).When applied in full cell,the Zn-V_(2)O_(5)cell also delivers significantly improved cycling *** work provides a facile yet effective method for developing reversible zinc metal batteries.

关键词： Zinc metal batteries Ti_(3)C_(2)T_(x)MXene Electrolyte additive Uniform Zn deposition

Water Reducer: A Highly Dispersing Binder for High-Performance Lithium-Sulfur Batteries

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Chinese Journal of Chemistry 2021年第6期39卷 1523-1530页

作者： Xin Geng Ruihao Lin xingxing gu Zhi Su Chao Lai College of Chemistry and Chemical Engineering Xinjiang Normal UniversityUrumqiXinjiang 830054China School of Chemistry and Materials Science Jiangsu Normal UniversityXuzhouJiangsu 221116China Chongqing Key Laboratory of Catalysis and New Environmental Materials College of Environment and ResourcesChongqing Technology and Business UniversityChongqing 400065China

Sulfur has been paid close attention by the research and manufacturing as a cathode material for lithium-sulfur batteries(LSB)in recent decade because it has high specific capacity and low *** the low utilization of active materials and serious shuttle phenomenon inhibit its commercialization *** this work,for the first time,water reducers are reported as multifunctional binders to address the above problems to enhance the performance of *** to the synthetic actions of the water reducer binder,such as highly dispersing effect and good chemical trapping function,commercial sulfur powders are directly used as cathodes,and much better electrochemical performance compared to using the conventional binder polyvinylidene fluoride(PVDF)was obtained,among which the sulfur cathode with sulfonated melamine formaldehyde(SMF)water reducer binder exhibits a high reversible capacity of 625.5 mA·h·g^(-1) after 200 cycles at 1 C and the cathode with polycarboxylic acid(PC)water reducer binder even demonstrates a high area specific capacity of 5 mA·h·cm^(-2) at high sulfur loading of 5 mg·cm^(-2).These low-cost water reducers are a promising binder for LSB in the future.

关键词： Energy conversion Polymers Binder Polyanions Adsorption

DFT‑guided Design and Fabrication of Carbon‑Nitride‑Based Materials for Energy Storage Devices:A Review

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Nano-Micro Letters 2021年第1期13卷 245-288页

作者： David Adekoya Shangshu Qian xingxing gu William Wen Dongsheng Li Jianmin Ma Shanqing Zhang Centre for Clean Environment and Energy School of Environment and ScienceGriffith UniversityGold Coast CampusGold CoastQLD 4222Australia College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion MaterialsChina Three Gorges UniversityYichang 443002People’s Republic of China Key Laboratory of Materials Processing and Mold(Zhengzhou University) Ministry of EducationZhengzhouPeople’s Republic of China

Carbon nitrides(including CN,C2N,C3N,C3N4,C4N,and C5N)are a unique family of nitrogen-rich carbon materials with multiple beneficial properties in crystalline structures,morphologies,and electronic *** this review,we provide a comprehensive review on these materials properties,theoretical advantages,the synthesis and modification strategies of different carbon nitride-based materials(CNBMs)and their application in existing and emerging rechargeable battery systems,such as lithium-ion batteries,sodium and potassium-ion batteries,lithium sulfur batteries,lithium oxygen batteries,lithium metal batteries,zinc-ion batteries,and solid-state *** central theme of this review is to apply the theoretical and computational design to guide the experimental synthesis of CNBMs for energy storage,i.e.,facilitate the application of first-principle studies and density functional theory for electrode material design,synthesis,and characterization of different CNBMs for the aforementioned rechargeable *** last,we conclude with the challenges,and prospects of CNBMs,and propose future perspectives and strategies for further advancement of CNBMs for rechargeable batteries.

关键词： Carbon nitrides Metal-ion batteries Density functional theory g-C3N4 Anode

Highly Reversible Li–Se Batteries with Ultra-Lightweight N,S-Codoped Graphene Blocking Layer

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Nano-Micro Letters 2018年第4期10卷 42-51页

作者： xingxing gu Lingbao Xin Yang Li Fan Dong Min Fu Yanglong Hou Chongqing Key Laboratory of Catalysis and New Environmental Materials College of Environment and Resources Chongqing Technology and Business University School of Chemical Engineering Shandong University of Technology College of Arts Chongqing Technology and Business University Beijing Key Laboratory for Magnetoelectric Materials and Devices (BKLMMD) BIC-ESAT Department of Materials Science and Engineering College of Engineering Peking University

The desire for practical utilization of rechargeable lithium batteries with high energy density has motivated attempts to develop new electrode materials and battery systems. Here, without additional binders we present a simple vacuum filtration method to synthesize nitrogen and sulfur codoped graphene(N,S-G) blocking layer, which is ultra-lightweight, conductive, and free standing. When the N,S-G membrane was inserted between the catholyte and separator, the lithium–selenium(Li–Se)batteries exhibited a high reversible discharge capacity of 330.7 mAh g^(-1) at 1 C(1 C = 675 mA g^(-1)) after 500 cycles and high rate performance(over 310 mAh g^(-1) at 4 C) even at an active material loading as high as ～5 mg cm^(-2). This excellent performance can be ascribed to homogenous dispersion of the liquid active material in the electrode, good Li^+-ion conductivity, fast electronic transport in the conductive graphene framework, andstrong chemical confinement of polyselenides by nitrogen and sulfur atoms. More importantly, it is a promising strategy for enhancing the energy density of Li–Se batteries by using the catholyte with a lightweight heteroatom doping carbon matrix.

关键词： Li–Se batteries N,S-codoped Graphene Ultra-lightweight Free-standing Vacuum filtration

Defect-rich and highly porous carbon nanosheets derived from Ti_(3)AlC_(2) MAX with good lithium storage properties

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Chinese Chemical Letters 2023年第2期34卷 618-622页

作者： Zhihao Zhu Peng Liu Yucheng Liu xingxing gu Zhi Su Zhong Su Chao Lai College of Chemistry and Chemical Engineering Xinjiang Normal UniversityUrumqi 830054China School of Chemistry and Materials Science Jiangsu Normal UniversityXuzhou 221116China Chongqing Key Laboratory of Catalysis and New Environmental Materials College of Environment and ResourcesChongqing Technology and Business UniversityChongqing 400067China National Research Base of Intelligent Manufacturing Service Chongqing Technology and Business UniversityChongqing 400067China

Defect-rich,highly porous two-dimensional carbon nanosheets(CNS) have attracted tremendous research interests in catalysis and environmental purification and other fields,because of their unique micromorphology,chemical stability and high specific surface ***,in this work,we report a new solution to synthesize an ultrathin two-dimensional CNS with rich defects and abundant pores via two-step etching the Ti_(3)AlC_(2)with the help of I2and *** CNS thickness,specific surface area and pore volume could be all tunable by adding the amount of *** the highest specific surface area and pore volume of the synthesized 2D CNS can be achieved 1134.4 m^(2)/g and 0.80 cm^(3)/g,with a thickness of only 0.64 nm and a yield of 35.9%.When employed as the anodes for lithium-ion batteries,the synthesized CNS anodes exhibit good cycling and rate *** work provides a novel and facile strategy for synthesizing highly porous and defective 2D carbon materials with good lithium storage properties.

关键词： Ti_(3)AlC_(2) Two-dimensional Carbon nanosheets Rich defect High specific surface area

Catalytic conversion of biomass-derived compounds to various amino acids: status and perspectives

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Frontiers of Chemical Science and Engineering 2023年第7期17卷 817-829页

作者： Benjing Xu Jinhang Dai Ziting Du Fukun Li Huan Liu xingxing gu Xingmin Wang Ning Li Jun Zhao Engineering Research Center for Waste Oil Recovery Technology and Equipment of Ministry of Education Chongqing Technology and Business UniversityChongqing 400067China College of Environment and Resources Chongqing Technology and Business UniversityChongqing 400067China Key Laboratory of Energy Resource Utilization from Agriculture Residue Academy of Agricultural Planning and EngineeringMinistry of Agriculture and Rural AffairsBeijing 100125China Department of Biology Hong Kong Baptist UniversityHong KongChina

Amino acids are important nitrogen-containing chemicals that have a variety of ***,fermentation is the widely employed method to produce amino acids;however,the products are mostly limited to natural amino acids in the *** synthesis is an alternative approach for the synthesis of amino acids with different types and configurations,where the use of renewable biomass-based feedstocks is highly *** date,several lignocellulose and triacylglycerol-derived intermediates,typicallyα-keto acids andα-hydroxyl acids,have been transformed into amino acids via the amination reaction in the presence of additional nitrogen sources(i.e.,NH3·H2O).Making full use of inherent nitrogen in biomass(i.e.,chitin and protein)to produce amino acids avoids the use of extra nitrogen sources and meets the requirements of green chemistry,which is attracting increasing *** this review,we summarize different chemical-catalytic systems for the transformation of biomass to amino *** outlook on the challenges and opportunities for more effective production of amino acids from biomass by catalytic methods is provided.

关键词： biomass amino acids chitin nitrogen-containing compounds lignocellulose

Microporous bamboo biochar for lithium-sulfur batteries

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Nano Research 2015年第1期8卷 129-139页

作者： xingxing gu Yazhou Wang Chao Lai Jingxia Qiu Sheng Li Yanglong Hou Wayde Martens Nasir Mahmood Shanqing Zhang Centre for Clean Environment and Energy Environmental Futures Research Institute Griffith School of Environment Gold Coast Campus Griffith University QLD 4222 Australia Department of Materials Science and Engineering College of Engineering Peking University Beijing 100871 China Science and Engineering Faculty Queensland University of Technology QLD 4001 Australia

Being simple, inexpensive, scalable and environmentally friendly, microporous biomass biochars have been attracting enthusiastic attention for application in lithium-sulfur （Li-S） batteries. Herein, porous bamboo biochar is activated via a KOH/annealing process that creates a microporous structure, boosts surface area and enhances electronic conductivity. The treated sample is used to encapsulate sulfur to prepare a microporous bamboo carbon-sulfur （BC-S） nanocomposite for use as the cathode for Li-S batteries for the first time. The BC-S nanocomposite with 50 wt.% sulfur content delivers a high initial capacity of 1,295 mA-h/g at a low discharge rate of 160 mA/g and high capacity retention of 550 mA-h/g after 150 cycles at a high discharge rate of 800 mA/g with excellent coulombic efficiency （995%）. This suggests that the BC-S nanocomposite could be a promising cathode material for Li-S batteries.

关键词： biochars lithium-sulfur batteries microporous structure bamboo carbon-sulfur composites

Polar, catalytic, and conductive CoSe2/C frameworks for performance enhanced S cathode in Li–S batteries

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Journal of Energy Chemistry 2020年第9期29卷 128-135,I0004页

作者： Bo Yuan Di Hua xingxing gu Yu Shen Li-Chun Xu Xiuyan Li Bing Zheng Jiansheng Wu Weina Zhang Sheng Li Fengwei Huo Key Laboratory of Flexible Electronics(KLOFE) Institute of Advanced Materials(IAM)Nanjing Tech UniversityNanjing 211816JiangsuChina Chongqing Key Laboratory of Catalysis and New Environmental Materials College of Environment and ResourcesChongqing Technology and Business UniversityChongqing 400067China College of Physics and Optoelectronics Taiyuan University of TechnologyTaiyuan 030024ShanxiChina

Lithium-sulfur battery(Li-S)is considered as one of the new-generation rechargeable batteries with high performance because of its extremely high theoretical capacity,energy density,environmental harmony and low ***,low electrical and ionic conductivity of sulfur,safety concerns and parasitic reaction generated by the dissolved polysulfide species in electrolyte hinder the commercialization of Li-S ***,we report a polyhedral porous structure comprising of carbon coating metal selenide nanoparticles(CoSe2/C),which could not only host sulfur for Li-S battery owing to its porous and conductive structure,but also mitigate the shuttle phenomenon by polysulfides adsorption and catalytic acceleration of redox *** a result,a performance enhanced CoSe2/C-S electrode for Li-S battery is achieved.

关键词： Catalytic Polar Conductive Sulfur cathode Cobalt Selenides

SOCS3 Attenuates GM-CSF/IFN-γ-Mediated Inflammation During Spontaneous Spinal Cord Regeneration

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Neuroscience Bulletin 2020年第7期36卷 778-792页

作者： Xuejie Zhang Bingqiang He Hui Li Yingjie Wang Yue Zhou Wenjuan Wang Tiancheng Song Nan Du xingxing gu Yi Luo Yongjun Wang Key laboratory of Neuroregeneration of Jiangsu and The Ministry of Education Nantong UniversityNantong 226001China Co-innovation Center of Neuroregeneration Nantong UniversityNantong 226001China Department of Rehabilitation Medicine Affiliated Hospital of Nantong UniversityNantong 226001China

SOCS3,a feedback inhibitor of the JAK/STAT signal pathway,negatively regulates axonal regrowth and inflammation in the central nervous system(CNS).Here,we demonstrated a distinct role of SOCS3 in the injured spinal cord of the gecko following tail *** the gecko spinal cord did not evoke an inflammatory cascade except for an injury-stimulated elevation of the granulocyte/macrophage colony-stimulating factor(GM-CSF) and interferon gamma(IFN-γ) ***,the expression of SOCS3 was upregulated in microglia,and unexpectedly not in *** expression of SOCS3 was sufficient to suppress the GMCSF/IFN-γ-driven inflammatory responses through its KIR domain by attenuating the activities of JAK1 and ***3 was also linked to GM-CSF/IFN-y-induced *** of adenovirus overexpressing SOCS3 in the injured cord resulted in a significant decrease of inflammatory *** results reveal a distinct role of SOCS3 in the regenerating spinal cord,and provide new hints for CNS repair in mammals.

关键词： SOCS3 Spinal cord Vertebrate Inflammation Cytokine