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Toward a fundamental understanding of the heterogeneous multiphysics behaviors of silicon monoxide/graphite composite anodes

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Carbon Energy 2024年第1期6卷 142-158页

作者： Xiang Gao suli li Jiachen Xue Dianyang Hu Jun Xu Department of Mechanical Engineering and Engineering Science University of North Carolina at CharlotteCharlotteNorth CarolinaUSA Vehicle Energy and Safety Laboratory(VESL) Battery ComplexityAutonomous Vehicleand Electrification(BATT CAVE)Research CenterUniversity of North Carolina at CharlotteCharlotteNorth CarolinaUSA Zhuhai CosMX Battery Co.Ltd. ZhuhaiGuangdongChina School of Data Science University of North Carolina at CharlotteCharlotteNorth CarolinaUSA

Silicon monoxide(SiO)(silicon[Si]mixed with silicon dioxide[SiO_(2)])/graphite(Gr)composite material is one of the most commercially promising anode materials for the next generation of high-energy-density lithium-ion *** major bottleneck for SiO/Gr composite anode is the poor cyclability arising from the stress/strain behaviors due to the mismatch between two heterogenous materials during the lithiation/delithiation *** date,a meticulous and quantitative understanding of the highly nonlinear coupling behaviors of such materials is still ***,an electro–chemo–mechanics-coupled detailed model containing particle geometries is *** underlying mechanism of the regulation between SiO and Gr components during electrochemical cycling is quantitatively *** discover that increasing the SiO weight percentage(wt%)reduces the utilization efficiency of the active materials at the same 1C rate charging and enhances the hindering effects of stress-driven flux on *** addition,the mechanical constraint demonstrates a balanced effect on the overall performance of cells and the local behaviors of *** study provides new insights into the fundamental interactions between SiO and Gr materials and advances the investigation methodology for the design and evaluation of next-generation high-energydensity batteries.

关键词： interactions lithium-ion batteries mechanical constraint multiphysics modeling Si-based anode

Highly improved cyclic stability of Ni-rich/li batteries with succinic anhydride as electrolyte additive and underlying mechanism

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Journal of Energy Chemistry 2023年第3期78卷 80-90,I0003页

作者： Shu Yang Guanjie li Xiaoyan lin Changyong Mo Xianggui Zhou lijiao Quan Kuan Zhou suli li Hai Wang Weishan li School of Chemistry South China Normal UniversityGuangzhou 510006GuangdongChina Zhuhai CosMX Battery Co. LtdZhuhai 519180GuangdongChina National and Local Joint Engineering Research Center of MPTES in High Energy and Safety liBs Engineering Research Center of MTEES(Ministry of Education)and Key Lab.of ETESPG(GHEI)South China Normal UniversityGuangzhou 510006GuangdongChina

lithium-metal battery based on Ni-rich cathode provides high energy density but presents poor cyclic stability due to the unstable electrode/electrolyte interfaces on both cathode and *** this work,we report a new strategy to address this *** is found that the cyclic stability of Ni-rich/li battery can be significantly improved by using succinic anhydride(SA) as an electrolyte ***,the capacity retention of liNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)(NCM811)/li cell is improved from 14% to 83% after 200cycles at 1 C between 3.0 and 4.35 V by applying 5% *** underlying mechanism of SA contribution is understood by comparing the effects of malic anhydride(MA) and citraconic anhydride(CA), both of which share a similar molecular structure to SA but show different *** anode side,SA can but MA and CA cannot form a protective solid electrolyte interphase(SEI) on li *** cathode side,three anhydrides can suppress the formation of hydrogen fluoride from electrolyte oxidation decomposition,but SA behaves ***,MA shows adverse effects on the interface stability of li anode and NCM811 cathode,which originates from its high *** the acidity of MA can be mitigated by substituting a methyl for one H atom at its C=C bond,the substituent CA cannot compete with SA in cyclic stability improvement of the cell,because the SEI resulting from CA is not as robust as that from SA,which is related to the binding energy of the SEI *** understanding reveals the importance of the electrolyte acidity on the Ni-rich cathode and the robustness of the SEI on li anode,which is helpful for rationally designing new electrolyte additives to further improve the cyclic stability of high-energydensity Ni-rich/li batteries.

关键词： lithium-metal battery Ni-rich cathode Electrolyte additives Succinic Anhydride Cyclic stability

NBAS基因变异所致婴儿肝衰竭综合征2型3例患儿的临床及遗传学研究

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中华医学遗传学杂志 2025年第1期42卷 56-63页

作者：李素丽于志丹郑璇权冰洁刘怡静梅世月周方郑州大学附属儿童医院、河南省儿童医院、郑州儿童医院消化科郑州450018 河南省遗传代谢性疾病重点实验室郑州450018

目的探讨3例婴儿肝衰竭综合征2型(ILFS2)患儿的临床特征及基因变异情况。方法选取3例于2023年2月至2024年2月就诊于郑州大学附属儿童医院的ILFS2患儿作为研究对象。收集患儿的临床资料。采集患儿及其父母的外周血样,对其进行家系全外显... 详细信息

目的探讨3例婴儿肝衰竭综合征2型(ILFS2)患儿的临床特征及基因变异情况。方法选取3例于2023年2月至2024年2月就诊于郑州大学附属儿童医院的ILFS2患儿作为研究对象。收集患儿的临床资料。采集患儿及其父母的外周血样,对其进行家系全外显子组测序(WES)。用Sanger测序法对3个家系的候选变异进行验证。参考美国医学遗传学与基因组学学会(ACMG)制定的《遗传变异分类标准与指南》,对3例患儿的候选变异的致病性进行评级。本研究通过了郑州大学附属儿童医院医学伦理委员会的审查(批准号:2024-k-069)结果3例患儿均表现为发热相关的反复急性肝衰竭。基因检测提示患儿1存在NBAS基因c.3596G>A与c.1181A>T复合杂合变异;患儿2存在NBAS基因c.2617C>T与c.2T>C复合杂合变异;患儿3存在NBAS基因c.3596G>A和c.2817_2818insT复合杂合变异。检出的3个变异中,c.1181A>T和c.2817_2818insT既往均未见报道。根据ACMG遗传变异解读指南,二者分别被判定为意义不明变异(PM2_Supporting+PM3+PP3)和致病性变异(PVS1+PM2_Supporting+PM3)。结论结合患儿的临床表型,NBAS基因的复合杂合变异可能是3个患儿的遗传学病因。对于不明原因发热相关的急性肝衰竭患儿,需警惕ILFS2的可能性,尽早完善基因检测。早期诊断和及时干预可显著改善预后。c.1181A>T与c.2817_2818insT变异的发现丰富了NBAS基因的变异谱。

关键词：婴儿肝衰竭综合征2型 NBAS基因变异

Rationally designing electrolyte additives for highly improving cyclability of liNi_(0.5)Mn_(1.5)O_(4)/Graphite cells

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Journal of Energy Chemistry 2024年第4期91卷 266-275页

作者： Zhiyong Xia Kuan Zhou Xiaoyan lin Zhangyating Xie Qiurong Chen Xiaoqing li Jie Cai suli li Hai Wang Mengqing Xu Weishan li School of Chemistry South China Normal UniversityGuangzhou 510006GuangdongChina China Zhuhai CosMX Battery Co. Ltd.Zhuhai 519180GuangdongChina National and Local Joint Engineering Research Center of MPTES in High Energy and Safety liBs Engineering Research Center of MTEES(Ministry of Education)and Key Lab.of ETESPG(GHEI)South China Normal UniversityGuangzhou 510006GuangzhouChina

High voltage is necessary for high energy lithium-ion batteries but difficult to achieve because of the highly deteriorated cyclability of the batteries.A novel strategy is developed to extend cyclability of a high voltage lithium-ion battery,liNi_(0.5)Mn_(1.5)O_(4)/Graphite(LNMO/Graphite)cell,which emphasizes a rational design of an electrolyte additive that can effectively construct protective interphases on anode and cathode and highly eliminate the effect of hydrogen fluoride(HF).5-Trifluoromethylpyridine-trime thyl lithium borate(LTFMP-TMB),is synthesized,featuring with *** anion TFMPTMB-tends to be enriched on cathode and can be preferentially oxidized yielding TMB and radical TFMP-.Both TMB and radical TFMP can combine HF and thus eliminate the detrimental effect of HF on cathode,while the TMB dragged on cathode thus takes a preferential oxidation and constructs a protective cathode *** the other hand,LTFMP-TMB is preferentially reduced on anode and constructs a protective anode ***,a small amount of LTFMP-TMB(0.2%)in 1.0 M liPF6in EC/DEC/EMC(3/2/5,wt%)results in a highly improved cyclability of LNMO/Graphite cell,with the capacity retention enhanced from 52%to 80%after 150 cycles at 0.5 C between 3.5 and 4.8 *** as-developed strategy provides a model of designing electrolyte additives for improving cyclability of high voltage batteries.

关键词： Electrolyte additive Design and synthesis Cyclability High voltage batteries Cathode and anode interphases

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个性化无规则多孔钛腰椎融合器的结构分析

机械科学与技术 2025年第1期44卷 143-149页

作者：李素丽赵京生杨来侠西安科技大学机械工程学院西安710054 西安交通大学机械制造系统工程国家重点实验室西安710049

利用有限元分析方法比较不同无规则多孔结构融合器在腰椎模型直立工况下力学性能的差异。基于脊椎腰段CT扫描数据,利用计算机辅助软件对腰椎L4-L5节段进行逆向工程重塑;根据腰椎模型设计了平均孔径大小为0.65 mm、0.75 mm和0.85 mm,且... 详细信息

利用有限元分析方法比较不同无规则多孔结构融合器在腰椎模型直立工况下力学性能的差异。基于脊椎腰段CT扫描数据,利用计算机辅助软件对腰椎L4-L5节段进行逆向工程重塑;根据腰椎模型设计了平均孔径大小为0.65 mm、0.75 mm和0.85 mm,且孔隙率分别为67.6%、72.8%和77.8%的3种不同的Voronoi无规则多孔融合器结构;利用ANSYS模拟腰椎直立压缩工况,对比分析了腰椎位移量和椎间融合器的位移量、等效应力应变及弹性模量情况。结果表明:3种不同参数的融合器表面应力不存在集中现象,而平均孔径为0.75 mm,且孔隙率为72.8%的无规则多孔腰椎融合器的等效应力峰值最低,相比其他两种降低了35.9%~54.2%,最大位移量为0.092 mm,与健康腰椎相比降低了0.046 mm;弹性模量与平均孔径为0.85 mm,且孔隙率为77.8%的相差不大,都能满足自体骨性能要求。因此,平均孔径为0.75 mm且孔隙率为72.8%的无规则腰椎融合器结构最优,可以有效改善锥体稳定性,同时为个性化无规则多孔融合器的设计提供了基础。

关键词：腰椎融合器个性化无规则多孔有限元分析

An ignored key link in greenhouse effect:Soil and soil CO_(2) slow heat loss

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Soil Ecology Letters 2020年第4期2卷 308-316页

作者： Weixin Zhang Chengde Yu Zhifeng Shen Shu liu suli li Yuanhu Shao Shenglei Fu Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions Ministry of Education/College of Environment and PlanningHenan UniversityKaifeng 475004China School of life Sciences Henan UniversityKaifeng 475004China

The ever-increasing atmospheric CO_(2) concentration is a key driver of modern global ***,the low heat capacity of atmosphere and strong convection processes in the troposphere both limit heat *** the higher heat capacity and CO_(2) concentration in soil compared to the atmosphere,the direct contributions of soil to the greenhouse effect may be *** experimentally manipulating CO_(2) concentrations both in the soil and the atmosphere,we demonstrated that the soil-retained heat and the slower soil heat transmission decrease the amount of heat energy leaking from the ***,the soil air temperature was affected by soil CO_(2) concentration,with the highest value recorded at 7500 ppm CO_(2).This study indicates that soil and soil CO_(2),together with atmospheric CO_(2),play a crucial role in the greenhouse *** spatial and temporal heterogeneity of soils and soil CO_(2) should be further investigated,given their potentially significant influence on global climate change.

关键词： Soil CO_(2)concentration Soil temperature Atmosphere temperature Soil heat loop Earth heat balance

Identification and selection of resistance to Bemisia tabaci among 550 cotton genotypes in the field and greenhouse experiments

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Frontiers of Agricultural Science and Engineering 2018年第2期5卷 236-252页

作者： lizhen ZHU Jianying li Zhongping XU Hakim MANGHWAR Sijia liANG suli li Muna ALARIQI Shuangxia JIN Xianlong ZHANG National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural University

Plants have developed sophisticated systems to cope with herbivore challenge, including morphological barriers and secondary metabolites to reduce damage. In this study, 550 Gossypium genotypes were evaluated for whitefly(Bemisia tabaci) resistance in five experiments including two in the field and three in the greenhouse, with23 resistant and 19 susceptible genotypes ***-resistance index determination showed that a leaf having a high density of hairs had resistance to whitfly egg/nymph production. Longer leaf hairs were also important for resistance. This study revealed that okra shaped leaves reduced adult whitefly oviposition preference, while glabrous leaves and high hair density helped not only in the reduction of the adults but also decreased oviposition preference. Gossypol was also observed to be involved in the reduction of adult whitefly development and/or survival.

关键词： Bemisia tabaci Gossypium genotypes gossypol leaf hair density leaf hair length

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金属熔体喷射沉积特性分析

稀有金属材料与工程 2019年第7期48卷 2232-2238页

作者：李素丽杨来侠卢秉恒西安科技大学陕西西安710054 西安交通大学机械制造系统工程国家重点实验室陕西西安710049

针对金属熔滴沉积增材制造中金属液流断续随机性变化、断续形貌等参数难以控制和预测的现存问题,采用理论分析与试验研究相结合的方法,对金属液流断续过程中的断续形貌及其影响因素脉冲压力、脉冲频率等进行了研究,揭示了断续形貌长度... 详细信息

针对金属熔滴沉积增材制造中金属液流断续随机性变化、断续形貌等参数难以控制和预测的现存问题,采用理论分析与试验研究相结合的方法,对金属液流断续过程中的断续形貌及其影响因素脉冲压力、脉冲频率等进行了研究,揭示了断续形貌长度分布规律。结果表明:通过调节脉冲气压和脉冲频率,可以提高金属液流断裂的形态精度和尺寸精度,可为后续制造过程提供稳定的均匀微滴流。

关键词：金属熔体断续沉积脉冲压力脉冲频率沉积形貌

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金属熔体沉积实验装置研究

稀有金属材料与工程 2020年第6期49卷 2154-2160页

作者：李素丽杨来侠王莉卢秉恒西安科技大学机械工程学院陕西西安710054 西安科技大学陕西西安710054 西安交通大学机械制造系统工程国家重点实验室陕西西安710049

金属熔体沉积成形涉及金属熔体的产生,形态演变,流动,凝固等热物理过程。根据金属液流断续特性要求,设计开发了金属熔体沉积装置。结果表明:通过此实验装置研究实现了金属熔体沉积过程关键参数(脉冲压力、扫描速度、熔体温度、基板温度... 详细信息

金属熔体沉积成形涉及金属熔体的产生,形态演变,流动,凝固等热物理过程。根据金属液流断续特性要求,设计开发了金属熔体沉积装置。结果表明:通过此实验装置研究实现了金属熔体沉积过程关键参数(脉冲压力、扫描速度、熔体温度、基板温度等)的监测与控制,为后续深入研究熔体沉积成形技术提供了必要的实验软硬件基础。

关键词：金属熔体实验装置脉冲压力脉冲频率