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Sandwich-type composited solid polymer electrolytes to strengthen the interfacial ionic transportation and bulk conductivity for all-solid-state lithium batteries from room temperature to 120 °C

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Journal of Energy Chemistry 2024年第8期95卷 288-295页

作者： Jiewen Tan Zhen Wang Jiawu Cui Zhanhui Jia Wensheng Tian Chao Wu chengxin Peng Chengyong Shu Kang Yang Wei Tang School of Chemical Engineering and Technology Xi'an Jiaotong University Center for Advancing materials Performance from the Nanoscale(CAMP-Nano) State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University State Key Laboratory of Space Power-sources Technology Shanghai Institute of Space Power-Sources School of materials Science and Engineering University of Shanghai for Science and Technology Top-Energy Digital manufacturing Technologies(Xi'an) Co. Ltd.

The insurmountable charge transfer impedance at the Li metal/solid polymer electrolytes（SPEs） interface at room temperature as well as the ascending risk of short circuits at the operating temperature higher than the melting point,dominantly limits their applications in solid-state batteries（SSBs）.Although the inorganic filler such as CeO2nanoparticle content of composite solid polymer electrolytes（CSPEs） can significantly reduce the enormous charge transfer impedance at the Li metal/SPEs interface,we found that the required content of CeO2nanoparticles in SPEs varies for achieving a decent interfacial charge transfer impedance and the bulk ionic conductivity in CSPEs.In this regard,a sandwich-type composited solid polymer electrolyte with a 10% CeO2CSPEs interlayer sandwiched between two 50% CeO2CSPEs thin layers（sandwiched CSPEs） is constructed to simultaneously achieve low charge transfer impedance and superior ionic conductivity at 30℃.The sandwiched CSPEs allow for stable cycling of Li plating and stripping for 1000 h with 129 mV polarized voltage at 0.1 ma cm-2and 30℃.In addition,the LiFePO4/Sandwiched CSPEs/Li cell also exhibits exceptional cycle performance at 30℃ and even elevated120℃ without short circuits.Constructing multi-layered CSPEs with optimized contents of the inorganic fillers can be an efficient method for developing all solid-state PEO-based batteries with high performance at a wide range of temperatures.

关键词： All-solid-state Li metal batteries CeO2 nanoparticles Charge transfer impedance PEO-based solid electrolytes Sandwich-type composite electrolytes

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PITPNC1 promotes the thermogenesis of brown adipose tissue under acute cold exposure

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Science China(Life Sciences) 2022年第11期65卷 2287-2300页

作者： Guoqing Tang chengxin ma Liangkui Li Shaoyan Zhang Fengsheng Li Jin Wu Yesheng Yin Qing Zhu Yan Liang Ru Wang He Huang Tong-Jin Zhao Hongyuan Yang Peng Li Feng-Jung Chen Shanghai Key Laboratory of Metabolic Remodeling and Health Institute of Metabolism and Integrative BiologyInstitutes of Biomedical SciencesDepartment of Endocrinology and MetabolismZhongshan HospitalFudan UniversityShanghai 200438China State Key Laboratory of Membrane Biology and Tsinghua-Peking Center for Life Sciences Beijing Advanced Innovation Center for Structural BiologySchool of Life SciencesTsinghua UniversityBeijing 100084China School of Kinesiology Shanghai University of SportShanghai 200438China Shanghai Qi Zhi Institute Shanghai 200030China School of Biotechnology and Biomolecular Sciences the University of New South WalesSydneyNSW 2052Australia

Brown adipose tissue (BAT) plays an essential role in non-shivering thermogenesis. The phosphatidylinositol transfer protein, cytoplasmic 1 (PITPNC1) is identified as a lipid transporter that reciprocally transfers phospholipids between intracellular membrane structures. However, the physiological significance of PITPNC1 and its regulatory mechanism remain unclear. Here, we demonstrate that PITPNC1 is a key player in thermogenesis of BAT. While Pitpnc1^(−/−) mice do not differ with wildtype mice in body weight and insulin sensitivity on either chow or high-fat diet, they develop hypothermia when subjected to acute cold exposure at 4℃. The Pitpnc1^(−/−) brown adipocytes exhibit defective β-oxidation and abnormal thermogenesis-related metabolism pathways in mitochondria. The deficiency of lipid mobilization in Pitpnc1^(−/−) brown adipocytes might be the result of excessive accumulation of phosphatidylcholine and a reduction of phosphatidic acid. Our findings have uncovered significant roles of PITPNC1 in mitochondrial phospholipid homeostasis and BAT thermogenesis.

关键词： PITPNC1 thermogenesis acute cold exposure β-oxidation lipid homeostasis

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基于模型预测控制的光-氢-储耦合系统的功率优化分配方法研究

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高压电器 2024年第7期60卷 23-33页

作者：刘硕吴旭马速良李成新北方工业大学北京未来电化学储能系统集成技术创新中心北京100144 中铁二十二局集团电气化工程有限公司北京100043

针对光伏发电存在间歇性和波动性问题,对光—氢—储耦合系统的控制策略进行研究,提出一种模型预测控制(MPC)的“光—氢—储”功率分配方法。首先,构建出光—氢—储耦合系统的整体结构,其中,氢能源系统包括PEM电解槽、氢燃料电池和储氢罐... 详细信息

针对光伏发电存在间歇性和波动性问题,对光—氢—储耦合系统的控制策略进行研究,提出一种模型预测控制(MPC)的“光—氢—储”功率分配方法。首先,构建出光—氢—储耦合系统的整体结构,其中,氢能源系统包括PEM电解槽、氢燃料电池和储氢罐,其次,根据光—氢—储耦合系统的功率平衡方程,构建出状态空间模型,以PEM电解槽功率、氢燃料电池功率作为控制量,明确系统中的多种约束条件,将MPC优化问题调整为二次规划(QP)问题进行求解,利用s-function函数模块构建MPC控制器,完成了系统的闭环仿真。通过仿真分析,验证了所提MPC实时功率分配方法的有效性。

关键词：光-氢-储耦合系统模型预测控制实时功率分配系统闭环仿真

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Towards storable and durable Zn-MnO_(2) batteries with hydrous tetraglyme electrolyte

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Journal of Energy Chemistry 2023年第5期80卷 432-441,I0010页

作者： Kaixuan ma Gongzheng Yang chengxin Wang State Key Laboratory of Optoelectronic materials and Technologies School of Materials Science and EngineeringSun Yat-sen(Zhongshan)UniversityGuangzhou 510275GuangdongChina

Aqueous rechargeable zinc-based batteries have attracted increasing interest and been considered potential alternatives for state-of-the-art lithium-ion batteries because of the low cost and high safety.many cathode materials have been gradually developed and demonstrated excellent electrochemical performances.However,the complex electrochemistry,inevitable hydrogen release,and zinc corrosion severely hinder the practical application.The most concerned Zn-MnO_(2)batteries still suffer from the Mn dissolution and formation of byproducts.By adding organic solvents to inhibit the activity of water molecules,the hydrous organic electrolytes provide a sound solution for eliminating the unfavorable factors.Here we report a tetraethylene glycol dimethyl ether-based hydrous organic electrolyte consisting of LiClO_(4)·3H_(2)O and Zn(ClO4)2·6H2O,and a birnessite-type MnO_(2)cathode material for Zn-MnO_(2)batteries.The Li+/Zn2+ions co-(de)insertion mechanism is ascertained by the structural and morphological analyses.The electrostatic interaction between inserted ions and crystal structure is reduced effectively by employment of monovalent Li+ions,which ensures structural stability of cathode materials.Hydrous tetraglyme electrolyte inhibits the activity of water molecules and thus avoids the formation of byproduct Zn_(4)ClO_(4)(OH)7·Meanwhile,highly stable Zn plating/stripping for over 1500 h,an average coulombic efficiency of>99%in long-term cycling,and ultralong storage life(the cells can work well after stored over 1 year)are simultaneously realized in the novel electrolyte.Benefitting from these aspects,the Zn-MnO_(2)batteries manifest high specific capacity of 132 ma h g^(-1),an operating voltage of 1.25 V,and a capacity retention of>98%after 1000 cycles at a current density of 200 ma g^(-1).

关键词： Energy storage Zn battery δ-MnO_(2) Hydrous tetraglyme electrolytes Long life

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Highly stable aqueous zinc-ion batteries enabled by suppressing the dendrite and by-product formation in multifunctional Al^(3+) electrolyte additive

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Nano Research 2022年第9期15卷 8039-8047页

作者： Xianlin Zhou Kaixuan ma Qianyu Zhang Gongzheng Yang chengxin Wang State key Laboratory of Optoelectronic materials and Technologies School of Materials Science and EngineeringSun Yat-sen(Zhongshan)UniversityGuangzhou 510275China College of materials Science and Engineering Sichuan UniversityChengdu 610064China

Rechargeable aqueous zinc-ion batteries(ZIBs)have gained extensive attention owing to the high safety,low cost,and high power/energy densities.But unfortunately the ZIBs universally suffer from the highly damaging series of side reactions,majorly including the insulating products formation,dendritic growth of zinc,and hydrogen evolution.To date there are few reports on the effective strategy that can solve the problems at the same time.Here we propose a novel hybrid electrolyte with Al^(3+)as additive to construct an aqueous ZIB composed of metallic zinc anode and K_(0.51)V_(2)O_(5)(KVO)nanoplate cathode.The highly reversible multistep K^(+)/Zn^(2+)-ions co-insertion/extraction in the lamellar structure with large interlayer spacing is clearly evidenced by systematical characterizations.In the presence of Al^(3+),the insulating basic zinc salts on the cathode surface have been reduced greatly,and the electrochemical potential window has been significantly expanded from 3 to 4.35 V.More interestingly,the Al^(3+)acts as a dopant embedded into the lattice that strengthens the crystal structure.Benefits from the suppressed zinc dendrite growth,the symmetrical Zn/Zn battery exhibited a satisfactory cycling life over 1,500 h at a high rate of 3 ma·cm^(-2)in the hybrid electrolyte.As a result,the Zn/KVO batteries delivered a high specific capacity of 210 mah·g^(-1)and retained high capacity retention of 91%after 1,600 h at a low current of 100 ma·g^(-1).

关键词： aqueous Zn-ion batteries hybrid electrolyte electrolyte additive vanadium-based cathode long cycle life

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Artificial Hybrid Solid Electrolyte-Mediated Ca Metal for Ultradurable Room Temperature 5 V Calcium Batteries

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Energy & Environmental materials 2023年第2期6卷 142-151页

作者： Huawei Song chengxin Wang State Key Laboratory of Optoelectronic materials and Technologies School of Materials Science and EngineeringSun Yat-Sen(Zhongshan)UniversityGuangzhou 510275China

The anodic stability and reversibility of Ca metal electrodeposition/dissolution have always been hampered by surface passivation and anion corrosion,especially in F-based carbonate ester electrolytes at high device voltages.To avoid direct Ca metal/electrolyte reactions,an artificial hybrid solid electrolyte layer(AHSEL),which is characteristic of sodium/calcium carbonate and calcium hydride nitride nanocrystals of sizemall amorphous zones,thus greatly suppressing the fluoridation of the Ca deposit.Consequently,the plating/stripping performance of AHSEL-modified Ca(AHSEL-Ca)is markedly improved compared with that of pristine Ca,lasting for>1400 h at a polarization shift of3.3 V),a large capacity of≈80 mah g^(-1)at 200 ma g^(-1),and an ultralong lifespan≈5000 cycles.

关键词： artificial solid electrolyte calcium metal batteries depth analysis electrolyte interphases high voltage

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Probing crystalline phase effect of rare earth metal oxides(REO)on Cu/REO(RE=Gd,Eu,Sm)catalysts for methanol steam reforming(MSR)to produce H_(2)

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Journal of Rare Earths 2023年第6期41卷 820-829,I0002页

作者： Xiaofei Liu Jiamei ma chengxin Lu Junwei Xu Xianglan Xu Xiuzhong Fang Xiang Wang Key Laboratory of Jiangxi Province for Environment and Energy Catalysis School of Chemistry and Chemical EngineeringNanchang UniversityNanchang 330031China

In this work,to study the phase structure effect,three groups of Cu/REO catalysts were prepared with cubic and monoclinic Gd_(2)O_(3),Eu_(2)O_(3)and Sm_(2)O_(3) supports for MSR reaction to produce H_(2).Based on CH3OH conversion and H_(2)yield,the reaction perfo rmance of the catalysts ranks as Cu/Sm_(2)O_(3)-M>Cu/Sm_(2)O_(3)-C>Cu/Gd_(2)O_(3)-M>Cu/Gd_(2)O_(3)-C>Cu/Eu_(2)O_(3)-M>Cu/Eu_(2)O_(3)-C.For the same kind of REO,Cu supported on the monoclinic support shows better performance than on the cubic one.Despite the phase structure difference,Sm_(2)O_(3) is the best support among all the three kinds of REOs.Compared with Cu/REO catalysts prepared with cubic supports,the corresponding catalysts prepared with monoclinic supports generally possess mo re surface oxygen vacancies,which can generate mo re surface active oxygen(O_(2)^(-)) and moderate basic sites.Moreover,the contents of Cu^(+) on the catalysts follow the same sequence.The reaction performance is positively related to the amount of these three types of surface sites.But metallic Cuo species is necessary to maintain the Cu^(+)■Cu^(0) redox cycle.Furthe rmore,on a catalyst with good perfo rmance,those vital surface reaction intermediates can be stabilized during the reaction.Cu/Sm_(2)O_(3)-M possesses the largest quantities of these surface sites,and has the appropriate amount of Cu^(+) and Cu^(0) after reduction,thereby displaying the optimal performance in all the catalysts.In conclusion,evident support crystal structure effect is observed for Cu/REO catalysts,and a monoclinic phase REO is a better support than the respective cubic phase one.

关键词： Methanol steam reforming H_(2)production Supported Cu catalysts Rare earth metal oxide supports Phase structure effect Cut and Cu^(0)sites

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稻虾共作深水灌溉模式下利于稻虾质产协同肥料运筹研究

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核农学报 2024年第6期38卷 1153-1162页

作者：张诚信徐荣马林杰杨婷王守红张家宏陈选青寇祥明江苏里下河地区农业科学研究所江苏扬州225007 江苏省生态农业工程技术研究中心江苏扬州225009 扬州银谷农业生态发展有限公司江苏扬州225119

为探究利于稻虾共作深水灌溉模式下水稻、小龙虾产量及稻米品质协同发展的适宜肥料运筹,本研究以适宜稻虾共作模式的水稻品种丰优香占为试验材料,设置7个施肥处理:干湿交替0 N不养虾(R)、干湿交替100%化肥养虾(RC)、深水灌溉[100%化肥... 详细信息

为探究利于稻虾共作深水灌溉模式下水稻、小龙虾产量及稻米品质协同发展的适宜肥料运筹,本研究以适宜稻虾共作模式的水稻品种丰优香占为试验材料,设置7个施肥处理:干湿交替0 N不养虾(R)、干湿交替100%化肥养虾(RC)、深水灌溉[100%化肥不养虾(RR)、100%化肥养虾(RS0)、30%有机肥+70%化肥养虾(RS3)、50%有机肥+50%化肥养虾(RS5)、70%有机肥+30%化肥养虾(RS7)],并从水稻、小龙虾产量性状、稻米品质(外观、加工、营养、食味)等多个维度进行研究分析。结果表明,水稻方面,在深水灌溉模式下有机无机肥比例为5∶5时,水稻产量最高,两年产量分别为8.99、6.54 t·hm^(-2),且与RC相比,产量有所提高。随着有机肥比例的提高,加工品质(糙米率、精米率、整精米率)总体呈上升趋势,外观品质(垩白度、垩白粒率、垩白大小)呈先上升后下降趋势,其中RS5、RS7的加工、外观品质较RC有所改善。蛋白质含量以RS5、RS7处理较高,且较RC显著提高,直链淀粉含量、米饭外观、口感、食味值呈相反趋势,以RS5、RS7处理较低。随着有机肥比例的提高,峰值黏度、热浆黏度、最终黏度、崩解值呈下降趋势,以RS5、RS7处理较低,且较RC显著降低;消减值、糊化温度则呈相反趋势。小龙虾方面,随着有机肥比例提高,各有机无机肥比例处理之间小龙虾产量无明显差异,但小龙虾均重变异系数呈下降趋势,以RS5和RS7较低。综合分析认为,全程氮肥宜使用有机无机供氮比例5∶5,可以缓解深水种养造成的不利影响,提高稻虾共作模式下水稻产量及稻米加工、外观、营养品质,并且可提高小龙虾规格稳定性和规格效益,但对食味品质、RVA特征有一定的负面影响。本研究为长江中下游地区稻虾共作模式下水稻保优栽培提供了科学依据。

关键词：稻虾共作水稻氮肥产量品质

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Transparent ultrathin SiO_(2) nanowire aerogel displaying novel properties when interacting with water:A promising versatile functional platform

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Fundamental Research 2023年第1期3卷 118-125页

作者： Jingbo He Churong ma Jin Yang Xiaobin Zou Bo Sun Yong Sun chengxin Wang State Key Laboratory of Optoelectronic materials and Technologies School of Materials Science and EngineeringSun Yat-sen(Zhongshan)UniversityGuangzhou 510275China Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications Institute of Photonics TechnologyJinan UniversityGuangzhou 511443China

With low density,high porosity,and outstanding physicochemical stability,ceramic nanowire aerogels and sponges exhibit various interesting properties.Herein,an ultrathin silica nanowire aerogel(SiO_(2)NWsA)was achieved via a facile chemical vapor deposition route.In addition to good mechanical and thermal performances,properties resulting from active water-aerogel interactions are revealed,i.e.,outstanding transparency,strong capillary effect,enhanced compressive strength(a reversible strain of∼62%),switchable wettability and robust shape retention ability when filled with water.The physical mechanism related to these interesting properties is demonstrated basically according to its unique features(distinctly reduced nanowire diameter,enriched nanoscopic gap channels,and reinforced network).To demonstrate the superiority,an advantageous solar vapor generation system(hydrophilic NWs-A/reduced graphene oxide(rGO)/hydrophobic NWs-A)was obtained by integrating these favorable characteristics,giving rise to remarkably promoted vapor evaporation rate and energy efficiency compared to the rGO hydrophobic NWs-A device.These results contribute to the structural design and functional exploration of nanowire aerogels.

关键词： Silica aerogel Nanowire aerogel Capillary effect Flexibility Transparency

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Genome-wide investigation of defensin genes in peanut(Arachis hypogaea L.)reveals AhDef2.2 conferring resistance to bacterial wilt

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The Crop Journal 2022年第3期10卷 809-819页

作者： Kai Zhao Rui Ren Xingli ma Kunkun Zhao chengxin Qu Di Cao Qian ma Yingying ma Fangping Gong Zhongfeng Li Xingguo Zhang Dongmei Yin College of Agronomy&Center for Crop Genome Engineering Henan Agricultural UniversityZhengzhou 450046HenanChina

Peanut(Arachis hypogea L.)bacterial wilt(BW)is a devastating disease caused by Ralstonia solanacearum that results in severe yield and quality losses.Plant defensins are short cysteine-rich peptides with antimicrobial activity.The role of defensin genes(Ah Def)in peanut is unclear.A genome-wide investigation of Ah Def genes was undertaken,and 12 identified Ah Def genes were classified into two groups containing the gamma-thionin domain formed by four disulfide pairs:Cys1-Cys8,Cys2-Cys5,Cys3-Cys6,and Cys4-Cys7.In silico analysis revealed that Ah Def genes showed highly conserved architectural features and contained cis-elements associated with phytohormone signaling and defense responses.A highly resistant cultivar,H108(R)and a susceptible accession,H107(S)were tested by R.solanacearum inoculation.H108(R)showed fewer symptoms than H107(S)owing to inhibition of bacterial reproduction and spread in the vascular bundles of roots and stems.In a transcriptomic expression profile,Ah Def genes,particularly Ah Def1.6 and Ah Def2.2,were up-regulated in H108(R)compared with H107(S)under R.solanacearum infection and phytohormone treatment.Subcellular localization showed that the Ah Def1.6 and Ah Def2.2 proteins were both expressed specifically on the plasma membrane.Overexpression of protein fusion Ah Def2.2-YFP in Nicotiana benthamiana and peanut leaves increased resistance to R.solanacearum,suggesting its role in response to BW infection.Ah Def2.2 may be valuable for peanut resistance breeding.

关键词： Peanut Bacterial wilt Defensin Expression analysis Resistance

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