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Poly(carbonate)-based ionic plastic crystal fast ion-conductor for solid-state rechargeable lithium batteries

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Journal of Energy Chemistry 2022年第10期31卷 360-369,I0009页

作者： He Zhou Jiaying Xie lixia bao Sibo Qiao Jiefei Sui Jiliang Wang School of Chemical Science and Technology National Demonstration Center for Experimental Chemistry and Chemical Engineering EducationYunnan UniversityKunming 650091YunnanChina

Liquid plasticizers with a relatively higher dielectric coefficient like ethylene carbonate(EC),propylene carbonate(PC),and ethyl methyl carbonate(EMC) are the most commonly used electrolyte materials in commercial rechargeable lithium batteries(LIBs) due to their outstanding dissociation ability to lithium salts.However,volatility and fluidity result in their inevitable demerits like leakage and potential safety problem of the final LIBs.Here we for the first time device a subtle method to prepare a novel thermal-stable and non-fluid poly(carbonate) solid-state electrolyte to merge EC with lithium carriers.To this aim,a series of carbonate substituted imidazole ionic plastic crystals(G-NTOC) with different polymerization degrees have been synthesized.The resulting G-NTOC shows an excellent solid-state temperature window(R.T.-115℃).More importantly,the maximum ionic conductivity and lithium transference number of the prepared G-NTOC reach 0.36 × 10^(-3) S cm^(-1) and 0.523 at 30℃,respectively.Galvanostatic cycling test results reveal that the developed G-NTOC solid-state electrolytes are favorable to restraining the growth of lithium dendrite due to the excellent compatibility between the electrode and the produced plastic crystal electrolyte.The fabricated LiIG-NTOCILiFeP04 all-solid-state cell initially delivers a maximum discharge capacity of 152.1 mAh g^(-1) at the discharge rate of 0.1 C.After chargingdischarging the cell for 60 times,Coulombic efficiency of the solid-state cell still exceeds 97%.Notably,the LiIG-NTOCILiFeP04 cell can stably light a commercial LED with a rated power of 0.06 W for more than1 h at 30℃,and the output power nearly maintains unchanged with the charging-discharging cycling test,implying a sizeable potential application in the next generation of solid-state LIBs.

关键词： Polycarbonate Ionic plastic crystal Solid state electrolyte Fast ion conductor Rechargeable lithium batteries

Organic fast ion-conductor with ordered Li-ion conductive nano-pathways and high ionic conductivity for electrochemical energy storage

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Journal of Energy Chemistry 2022年第3期31卷 647-656,I0017页

作者： Yibin Yang He Zhou Jiaying Xie lixia bao Tianshi Li Jingxin Lei Jiliang Wang School of Chemical Science and Technology Yunnan UniversityKunming 650091YunnanChina State Key Laboratory of Polymer Materials Engineering Polymer Research Institute of Sichuan UniversityChengdu 610065SichuanChina

Solid electrolyte(SE)is the most crucial factor to fabricate safe and high-performance all-solid-state lithium-ion batteries.However,the most commonly reported SE,including solid polymer electrolyte(SPE)and inorganic oxides and sulfides,suffer problems of low ionic conductivity at room temperature for SPE and large interfacial impedance with electrodes for inorganic electrolytes.Here we for the first time demonstrate a novel ionic plastic crystal lithium salt solid electrolyte(OLiSSE)fast ion-conductor dilithium(1,3-diethyl-4,5-dicarboxylate)imidazole bromide with ordered Li-ion conductive nanopathways and an exceptional ionic conductivity of 4.4×10^(−3)Scm^(−1)at 30℃.The prepared OLiSSE exhibits apparent characters of typical ionic plastic crystals in the temperature range of−20 to 70℃,and shows remarkable thermal stability and electrochemical stability below 150℃ and 4.7 V,respectively.No lithium dendrite or short circuit behavior is detected for the Li|OLiSSE|Li cell after the galvanostatic charge-discharge test for 500 h.The fabricated Li|OLiSSE|LiFePO_(4) all-solid-state cell without using any separator and liquid plasticizer directly delivers an initial discharge capacity of 151.4 mAh g^(−1) at the discharge rate of 0.1 C,and shows excellent charge-discharge cycle stability,implying large potential application in the next generation of safe and flexible all-solid-state lithium batteries.

关键词： Solid state electrolytes Organic fast ion-conductor Ordered nano-pathway Electrochemical energy storage Ionic conductivity

Fast charge transport motivated by tunable Mo2C/Mo2N high-quality heterointerface for superior pseudocapacitive storage

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能源化学:英文版 2023年第8期83卷 465-477,I0012页

作者： Yanjun Gao Shaohua Zhang Lingrui Xu Xiangyang Li Lijie Li lixia bao Jiong Peng Xin Li School of Chemistry and Chemical Engineering Beijing Institute of TechnologyBeijing 100081China School of Material Science and Engineering Beijing Institute of TechnologyBeijing 100081China Analysis&Testing Center Beijing Institute of TechnologyBeijing 100081China

The development of potential transition-metal carbide/nitride heterojunctions is hindered by overall understanding and precise modulation for heterointerface effects.Herein,we demonstrate that Mo_(2)C/Mo_(2)N heterojunction with the precisely regulated high-quality interface can achieve marvelous rate performance and energy output via enlarging the interface-effect range and maximizing "accelerated charge" amount The heterointerface mechanism improving properties is synergistically revealed from kinetics and thermodynamics perspectives.Kinetics analysis confirms that the self-built electric field affords a robust force to drive rapid interface electrons/ions migration.The small adsorption energy,high density of states and quite low diffusion barrier thermodynamically enhance the electrochemical reaction dynamics on heterointerface.Consequently,the almost optimal performance of ultrahigh capacitance retention(85.6% even at 10 A g^(-1)) and pronounced energy output(96.4 Wh kg^(-1))in hybridsupercapacitors than other Mo_(2)C/Mo_(2)N-based materials is presented.This work gives new insight into the energy storage mechanism of heterojunction and guides the design of advanced electrodes.

关键词： Energy storage Hybrid supercapacitors Pseudocapacitance Heterojunction High-quality interface

Three-in-one fire-retardant poly(phosphate)-based fast ion-conductor for all-solid-state lithium batteries

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Journal of Energy Chemistry 2023年第5期80卷 324-334,I0008页

作者： Jiaying Xie Sibo Qiao Yuyang Wang Jiefei Sui lixia bao He Zhou Tianshi Li Jiliang Wang School of Chemical Science and Technology National Demonstration Center for Experimental Chemistry and Chemical Engineering EducationYunnan UniversityKunming 650091YunnanChina

The development of flame retardant or nonflammable electrolytes is the key to improve the safety of lithium batteries,owing to inflammable organic solvents and polymer matrix in common liquid and polymer electrolytes regarded as the main cause of battery fire.Herein,a series of solid-state polyphosphate oligomers(SPPO)as a three-in-one electrolyte that integrated the roles of lithium salt,dissociation matrix,and flame retardant were synthesized.The well-designed SPPO electrolytes showed an optimal ionic conductivity of 5.5×10^(-4)S cm-1at 30℃,an acceptable electrochemical window up to 4.0 V vs.Li/Li+,and lithium ion transference number of 0.547.Stable Li-ion stripping/plating behavior for 500 h of charge-discharge cycles without internal short-circuit in a Li|SPPO|Li cell was confirmed,together with outstanding interface compatibility between the SPPO electrolyte and lithium foil.The optimal Li|SPPO|LiFePO4cell presented good reversible discharge capacity of 149.4 mA h g-1at 0.1 C and Coulombic efficiency of 96.4%after 120 cycles.More importantly,the prepared SPPO cannot be ignited by the lighter fire and show a limited-oxygen-index value as high as 35.5%,indicating splendid nonflammable nature.The SPPO could be a promising candidate as a three-in-one solid-state electrolyte for the improved safety of rechargeable lithium batteries.

关键词： Three-in-one Poly(phosphate) Organic fast ion-conductor Solid-state polymer electrolyte Flame-retardant Secondary lithium batteries

Multi-3D hierarchical biomass-based carbon particles absorber for solar desalination and thermoelectric power generator

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Journal of Materials Science & Technology 2020年第24期59卷 180-188页

作者： Hao Jiang Xuemin Geng Simin Li Hongyu Tu Jiliang Wang lixia bao Peng Yang Yanfen Wan School of Materials and Energy Key Laboratory of LCR Materials and Devices of Yunnan ProvinceYunnan UniversityKunming 650091China School of Chemical Science and Technology Yunnan UniversityKunming 650091China

To meet challenges of the global energy crisis and the freshwater resources shortage,the interfacial solarto-steam conversion(ISSC)system was developed quickly in recent years.The photothermal materials play an important role in the ISSC system.We are devoted to developing a unique photothermal material integrating multiple 3 D design philosophy both at macroscopic and microscopic levels by employing the cost-effective and widespread resources like straw,rose and coffee grounds,for carbonization as solar absorbers.The biomass-based carbonized particles(CPs)possess three major advantages:(1)wide sizedistribution is accessible to form 3 D porous rough surface of absorber layer to enhance ability of light absorption;(2)the pristine hierarchical microstructure could absorb nearly all the incident light;(3)the intrinsic vascular bundles with pores on their lumen walls provide a rapid and omnidirectional transport for water and steam escape.A high-efficient solar steam device was fabricated based on the absorber material with its internal 3 D micro textures and external 3 D architectures.Under the illumination of 1 sun,the photothermal conversion efficiency of straw,rose and coffee CPs can reach 93.4%,92.8% and 76%,respectively.Simultaneously,a high-efficient solar thermoelectric generator(STEG)is made by coating CPs on a commercial thermoelectric generator and the maximum power of STEG can reach 538.0μW.Such scalable biomass-based photothermal materials and high-grade thermoelectric conversion capability could be applied to the water purification and the electricity production.

关键词： Interfacial solar-to-steam conversion Biomass carbon particles 3D porous absorber Omnidirectional water transport Steam escape

腹腔镜子宫切除手术瑞芬太尼联合丙泊酚镇痛效果及对患者血流动力学、应激指标影响

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中国计划生育学杂志 2024年第5期32卷 1062-1066页

作者：包黎霞王敏丹段丁楠浙江省磐安县人民医院 322399 浙江省金华市中心医院

目的:探究腹腔镜子宫切除术应用瑞芬太尼联合丙泊酚麻醉镇痛效果及对患者血流动力学、应激指标和不良反应影响。方法:选取本院2021年1月-2023年12月接诊的拟行腹腔镜子宫切除术患者128例,随机分为观察组和对照组(均n=64),均行腹腔镜子... 详细信息

目的:探究腹腔镜子宫切除术应用瑞芬太尼联合丙泊酚麻醉镇痛效果及对患者血流动力学、应激指标和不良反应影响。方法:选取本院2021年1月-2023年12月接诊的拟行腹腔镜子宫切除术患者128例,随机分为观察组和对照组(均n=64),均行腹腔镜子宫切除术,术中对照组予以舒芬太尼联合丙泊酚麻醉诱导,随后持续泵入维持;观察组予以瑞芬太尼联合丙泊酚麻醉诱导,随后持续泵入维持。对比两组血流动力学指标、应激指标、疼痛指标、疼痛视觉模拟评分(VAS)及不良反应。结果:麻醉诱导后、气管插管时、手术开始时及手术结束即刻心率和平均动脉压水平观察组均低于对照组,术后即刻两组肾上腺素、皮质醇、5-羟色胺和脑内神经肽水平均低于术前且观察组(60.26±5.41 pg/ml、84.22±5.03ng/ml、90.24±9.31ng/L、121.69±13.47μg/L)低于对照组(69.96±5.15pg/ml、92.15±6.39ng/ml、139.64±12.13ng/L、160.55±16.36μg/L),两组术后即刻疼痛评分均低于术前,且观察组(2.95±0.21分)低于对照组(3.37±0.32分)(均P0.05)。结论:腹腔镜子宫切除术应用瑞芬太尼联合丙泊酚麻醉,可显著改善患者血流动力学指标、应激水平,降低患者疼痛介质水平和VAS评分,且不增加不良反应。

关键词：腹腔镜子宫切除术瑞芬太尼丙泊酚血流动力学应激指标镇痛效果不良反应

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In situ atomic-scale observation of size-dependent (de) potassiation and reversible phase transformation in tetragonal FeSe anodes

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InfoMat 2023年第1期5卷 161-171页

作者： Ran Cai lixia bao Wenqi Zhang Weiwei Xia Chunhao Sun Weikang Dong Xiaoxue Chang Ze Hua Ruiwen Shao Toshio Fukuda Zhefei Sun Haodong Liu Qiaobao Zhang Feng Xu Lixin Dong Beijing Advanced Innovation Center for Intelligent Robots and Systems School of Medical TechnologyBeijing Institute of TechnologyBeijingPeople's Republic of China Analysis&Testing Center Beijing Institute of TechnologyBeijingPeople's Republic of China Department of Biomedical Engineering City University of Hong KongHong KongPeople's Republic of China Shaanxi Materials Analysis and Research Center School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi'anPeople's Republic of China School of Environmental and Safety Engineering North University of ChinaTaiyuanPeople's Republic of China Department of Materials Science and Engineering College of MaterialsXiamen UniversityXiamenFujianPeople's Republic of China Department of Nanoengineering University of California San DiegoLa JollaCaliforniaUSA SEU-FEI Nano-Pico Center Key Laboratory of MEMS of Ministry of EducationSoutheast UniversityNanjingPeople's Republic of China

Potassium-ion batteries(PIBs)are considered promising alternatives to lithium-ion batteries owing to cost-effective potassium resources and a suitable redox potential of-2.93 V(vs.-3.04 V for Li+/Li).However,the exploration of appro-priate electrode materials with the correct size for reversibly accommodating large K+ions presents a significant challenge.In addition,the reaction mecha-nisms and origins of enhanced performance remain elusive.Here,tetragonal FeSe nanoflakes of different sizes are designed to serve as an anode for PIBs,and their live and atomic-scale potassiation/depotassiation mechanisms are revealed for the first time through in situ high-resolution transmission electron micros-copy.We found that FeSe undergoes two distinct structural evolutions,sequen-tially characterized by intercalation and conversion reactions,and the initial intercalation behavior is size-dependent.Apparent expansion induced by the intercalation of K+ions is observed in small-sized FeSe nanoflakes,whereas unexpected cracks are formed along the direction of ionic diffusion in large-sized nanoflakes.The significant stress generation and crack extension originating from the combined effect of mechanical and electrochemical interactions are elucidated by geometric phase analysis and finite-element analysis.Despite the different intercalation behaviors,the formed products of Fe and K_(2)Se after full potassiation can be converted back into the original FeSe phase upon depotassiation.In particular,small-sized nanoflakes exhibit better cycling perfor-mance with well-maintained structural integrity.This article presents the first successful demonstration of atomic-scale visualization that can reveal size-dependent potassiation dynamics.Moreover,it provides valuable guidelines for optimizing the dimensions of electrode materials for advanced PIBs.

关键词： elucidated by geometric phase analysis and finite-element analysis. Despite the different intercalation behaviors the formed products of Fe and K 2 Se after full potassiation can be converted back into the original FeSe phase upon depotassiation. In particular small-sized nanoflakes exhibit better cycling perfor- mance with well-maintained structural integrity. This article presents the first successful demonstration of atomic-scale visualization that can reveal size- dependent potassiation dynamics. Moreover it provides valuable guidelines for optimizing the dimensions of electrode materials for advanced PIBs. KEYWOR DS in situ transmission electron microscopy potassium-ion batteries potassium-ion storage mechanism size-dependent effects tetragonal FeSe

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钌基氢析出反应电催化剂的研究进展

化工科技 2024年第1期32卷 71-76页

作者：窦迪王海斌包丽霞丛媛媛兰州理工大学石油化工学院甘肃兰州730050

钌具有与铂相近的氢析出反应(HER)催化活性,价格约为铂的一半,是一种替代铂的理想金属。研究高效、稳定并且价格低廉的钌基HER电催化剂是实现氢能源社会的有效途径。介绍了HER机理,总结了最近钌基氢析出反应电催化剂的4种设计策略,展望... 详细信息

钌具有与铂相近的氢析出反应(HER)催化活性,价格约为铂的一半,是一种替代铂的理想金属。研究高效、稳定并且价格低廉的钌基HER电催化剂是实现氢能源社会的有效途径。介绍了HER机理,总结了最近钌基氢析出反应电催化剂的4种设计策略,展望了钌基氢HER电催化剂的机遇和挑战。

关键词：氢析出反应钌基催化剂电解水氢能源

牛布氏杆菌病和分枝杆菌病二联表位疫苗的构建及其免疫效果评价

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畜牧与兽医 2024年第2期56卷 69-75页

作者：卢宝平扈立伟任君杜荣起顾天越包利霞刘青朱凡杰张东超金天明天津农学院/天津市农业动物繁育与健康养殖重点实验室天津300392 天津农学院动物科学与动物医学学院/天津市畜禽病原检测与基因工程疫苗工程技术中心天津300392 天津市农业科学院/天津市畜禽分子育种与生物技术重点实验室天津300192

为研发一种更安全、有效的防控牛布氏杆菌病和分枝杆菌病的疫苗,运用在线软件ABCPerd和IEBD对牛布氏杆菌外膜蛋白(Omp25)和牛分枝杆菌抗原85A(Ag85A)的B、T细胞表位进行预测分析,设计新的表位基因肽段NewⅠ和NewⅡ,并通过SOPMA和VaxiJe... 详细信息

为研发一种更安全、有效的防控牛布氏杆菌病和分枝杆菌病的疫苗,运用在线软件ABCPerd和IEBD对牛布氏杆菌外膜蛋白(Omp25)和牛分枝杆菌抗原85A(Ag85A)的B、T细胞表位进行预测分析,设计新的表位基因肽段NewⅠ和NewⅡ,并通过SOPMA和VaxiJen在线软件对NewⅠ和NewⅡ的二级结构与抗原性进行分析。将NewⅠ、Omp25、NewⅡ和Ag85A基因序列依次用自剪切肽T2A、P2A、E2A进行连接,获得串联基因并命名为COE,将COE基因构建至真核表达载体GV658,获得重组质粒GV658-COE;将上述重组质粒转染至HEK293细胞,利用细胞计数(CCK-8)试验评估GV658-COE对细胞的安全性,通过免疫印迹分析目的蛋白的表达情况;将重组质粒以400μg/只的剂量免疫大鼠,检测在第3次免疫后的血清抗体及大鼠脾淋巴细胞中的T细胞亚群占比情况。结果显示:NewⅠ和NewⅡ序列二级结构较稳定,抗原性良好;重组质粒经PCR扩增获得3231 bp大小的目的条带,与预计相符;重组质粒对HEK293细胞无毒性作用;重组质粒在HEK393细胞中可表达出目的蛋白,分别在22.3、17.3、23.9和35.6 kDa处有目的蛋白NewⅠ、Omp25、NewⅡ和Ag85A的表达。三免后,重组质粒免疫大鼠产生的IgG水平均高于空载质粒组和PBS组;与PBS组相比,重组质粒免疫大鼠脾脏中CD4^(+)和CD8^(+)T淋巴细胞百分比均升高。研究表明,重组质粒GV658-COE能有效激发大鼠的体液免疫和细胞免疫反应,可成为预防牛布氏杆菌病和分枝杆菌病的候选疫苗。

关键词：牛布氏杆菌病牛分枝杆菌病表位疫苗 Omp25 Ag85A