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Autonomous Chemistry Enabling Environment-Adaptive Electrochemical Energy Storage Devices

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CCS Chemistry 2023年第1期5卷 11-29页

作者： zhisheng lv Wenlong Li Jiaqi Wei Fanny Ho Jie Cao Xiaodong Chen Institute of Materials Research and Engineering Agency for ScienceTechnology and Research(A*STAR)138634 Singapore Innovative Centre for Flexible Devices(iFLEX) Max Planck—NTU Joint Lab for Artificial SensesSchool of Materials Science and EngineeringNanyang Technological University639798 Singapore

Next-generation electronics that are fused into the human body can play a key role in future intelligent communication,smart healthcare,and human enhancement *** a promising energy supply component for smart biointegrated electronics,environment-adaptive electrochemical energy storage(EES)devices with complementary adaptability and functions have garnered huge interest in the past *** to the advancements in autonomous chemistry,which regulate the constitutional dynamic networks in materials,EES devices have witnessed higher freedom of autonomous adaptability in terms of mechano-adaptable,biocompatibility,and stimuli-response properties for biointegrated and smart *** this mini-review,we summarize the recent progress in emerging environmentadaptive EES devices enabled by the constitutional dynamic network of mechanical adaptable materials,biocompatible materials,and stimuli-responsive supramolecular polymer ***,the challenges and perspectives of autonomous chemistry on the environment-adaptive EES devices are discussed.

关键词： autonomous chemistry biointegrated electronics environmental adaption electrochemical energy storage devices

Decimal Solvent-Based High-Entropy Electrolyte Enabling the Extended Survival Temperature of Lithium-Ion Batteries to−130°C

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CCS Chemistry 2021年第4期3卷 1245-1255页

作者： Wei Zhang Huarong Xia Zhiqiang Zhu zhisheng lv Shengkai Cao Jiaqi Wei Yifei Luo Yao Xiao Lin Liu Xiaodong Chen Innovative Centre for Flexible Devices(iFLEX) School of Materials Science and EngineeringNanyang Technological UniversitySingapore 639798 Singapore-HUJ Alliance for Research and Enterprise Campus for Research Excellence and Technological EnterpriseSingapore 138602

Freezing and crystallization of commercial ethylene carbonate-based binary electrolytes,leading to irreversible damage to lithium-ion batteries(LIBs),remain a significant challenge for the survival of energy storage devices at extremely low temperatures(lvent-based high-entropy electrolyte is developed with an unprecedented low freezing point of−130°C to significantly extend the service temperature range of LIBs,far superior to−30°C of the commercial *** from conventional electrolytes,this molecularly disordered solvent mixture greatly suppresses the freezing crystallization of electrolytes,providing good protection for LIBs from possible mechanical damage at extremely low *** from this,our high-entropy electrolyte exhibits extraordinarily high ionic conductivity of 0.62 mS·cm−1 at−60°C,several orders of magnitude higher than the frozen commercial ***,LIBs utilizing decimal electrolytes can be charged and discharged even at an ultra-low temperature of−60°C,maintaining high capacity retention(∼80%at−40°C)as well as remarkable rate *** study provides design strategies of low-temperature electrolytes to extend the service temperature range of LIBs,creating a new avenue for improving the survival and operation of various energy storage systems under extreme environmental conditions.

关键词： low temperatures lithium-ion batteries electrolytes high entropy decimal solvent

Approaching the Lithiation Limit of MoS2 While Maintaining Its Layered Crystalline Structure to Improve Lithium Storage

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Approaching the Lithiation Limit of MoS2 While Maintaining I...

Actively contractible and antibacterial hydrogel for accelerated wound healing

中国化学会2019能源材料和缺陷化学研讨会

作者： Zhiqiang Zhu Yuxin Tang zhisheng lv Xiaodong Chen Innovative Centre for Flexible Devices School of Materials Science and Engineering Nanyang Technological University

MoS is a promising high-rate electrode for lithium-ion batteries(LIBs) since its large interlayer(0.62 nm) can enable fast lithium diffusion in the voltage range of 3.0-1.0 V. The main limitation of this reaction is its low theoretical capacity(167 mAh/g). Here, by fine tuning the lithiation depth of MoS, we demonstrate that its layered crystalline structure can be preserved with expanded interlayer distance when cycled in 3.0-0.6 V. The deeper lithiation and maintained crystalline structure endow commercial MoS(～1.5 μm) with a higher capacity of 232 mAh/g at 0.05 A/g and a good capacity retention of ～92% even after 1000 cycles at 1.0 A/g. Moreover, the enlarged interlayer allows commercial MoS sample to deliver a capacity of 165 mAh/g at a high rate of 5.0 A/g, which is twice as large as the capacity obtained in 3.0-1.0 V at the same rate. Our strategy of controlling the lithiation depth of MoS to avoid fracture ushers in new possibilities to enhance the lithium storage of layered transition-metal dichalcogenides.

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Nano Research 2024年第8期17卷 7394-7403页

作者： Zhaoxin Ji Ting Wei Jiafei Zhu Jiaying Hu zhisheng Xiao Boxiong Bai Xinying lv Yu Miao Muchao Chen Cheng Wang Feng Pan Yang Yang Meng Li Qian Chen Institute of Functional Nano and Soft Materials Jiangsu Key Laboratory for Carbon-Based Functional Materials and DevicesSoochow UniversitySuzhou 215123China Department of Thoracic Surgery Shanghai Pulmonary HospitalSchool of MedicineTongji UniversityShanghai 200433China Central Laboratory Shanghai Pulmonary HospitalSchool of MedicineTongji UniversityShanghai 200433China School of Materials Science and Engineering Tongji UniversityShanghai 201804China Department of dermatology Shanghai Children’s Medical Center School of MedicineShanghai Jiao Tong UniversityShanghai 200025China

Adhesive hydrogel has drawn great attention for wide applications in wound healing owing to its excellent biocompatibility and lasting ***,traditional adhesive hydrogels only keep the wound moist to promote wound *** is still imperative to fabricate adhesive hydrogels that exhibit efficient antibacterial ability,active driving dynamic wound closure,and reactive oxygen species(ROS)scavenging together with excellent mechanical ***,a novel hydrogel based on poly(N-isopropyl acrylamide)(PNIPAAm),a thermoresponsive polymer,and tannic acid(TA)-Ag nanoparticles(TA-Ag NPs)exhibiting active contraction,tissue adhesion,anti-inflammatory and antibacterial functions was ***-Ag dispersed in the hydrogel not only functioned as the catalyst to polymerize the reaction but also provided additional anti-inflammatory and antibacterial ***,tannic acid containing catechol groups endowed the hydrogel with adhesive *** interestingly,the obtained hydrogel exhibited the thermoresponsive shrinkage ability,which could mechanically drive wound closure due to the presence of PNIPAAm *** vivo mouse full-thickness skin defect model demonstrated that this actively contractible and antibacterial hydrogel is a promising dressing to improve wound healing process by accelerating tissue regeneration and preventing bacterial ***,this multi-functional adhesive hydrogel developed here may provide a new possibility for wound healing.

关键词： anti-inflammatory antibacterial active contraction hydrogel patch wound healing

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基于智能寻迹的清洁机器人控制系统

机床与液压 2015年第21期43卷 91-94页

作者：陈朝大吕志胜广东技术师范学院天河学院广东广州510540 广州航海学院广东广州510725

针对红外避障检测和绝对定位的局限性,对智能寻迹的清洁机器人进行研究。机器人采用超声波传感器配合伺服电机构成自动避障系统,对室内未知环境进行探测,并能有效克服红外检测的不足。在此基础上,提出了多路径融合规划控制算法,使机器... 详细信息

针对红外避障检测和绝对定位的局限性,对智能寻迹的清洁机器人进行研究。机器人采用超声波传感器配合伺服电机构成自动避障系统,对室内未知环境进行探测,并能有效克服红外检测的不足。在此基础上,提出了多路径融合规划控制算法,使机器人能够完成自主全区域覆盖行走。实验效果表明:该控制系统具有良好的响应特性和较好的清扫覆盖率,可连续长时间工作,且稳定性好。

关键词：清洁机器人自动避障路径规划

热处理对等离子喷涂WC-12Co涂层-基体结合性能的影响

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热加工工艺 2012年第2期41卷 167-169页

作者：吕志胜彭文浩郝建民长安大学材料科学与工程学院陕西西安710061

通过等离子喷涂制备WC-12Co涂层,经过对涂层进行不同温度热处理并对其进行微观结构的表征和力学性能的测试;研究不同热处理后涂层性能和结构的变化,并通过扫描电镜、能谱分析仪等分析手段对等离子喷涂制备的WC-12Co涂层进行显微结构分... 详细信息

通过等离子喷涂制备WC-12Co涂层,经过对涂层进行不同温度热处理并对其进行微观结构的表征和力学性能的测试;研究不同热处理后涂层性能和结构的变化,并通过扫描电镜、能谱分析仪等分析手段对等离子喷涂制备的WC-12Co涂层进行显微结构分析。结果表明:经过热处理后涂层基体的界面硬度得到提高,结合强度也得到提高。

关键词：等离子喷涂 WC-12Co 热处理结合强度

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Mg合金在炼钢过程应用研究

上海金属 2015年第6期37卷 69-72页

作者：栗红孙群吕志升康磊袁浩康伟鞍钢股份有限公司辽宁鞍山114009

采用镁铝铁合金在实验室高温炉进行了脱氧试验;镁铝合金在炼钢厂超低碳钢生产中开展了工业脱氧试验。与铝脱氧钢的夹杂物类型和分布进行对比,含镁合金脱氧生成的脱氧产物以Al-O和Al-Mg-O为主,粒径更细小,夹杂物分布更加弥散,钢中Al2O3... 详细信息

采用镁铝铁合金在实验室高温炉进行了脱氧试验;镁铝合金在炼钢厂超低碳钢生产中开展了工业脱氧试验。与铝脱氧钢的夹杂物类型和分布进行对比,含镁合金脱氧生成的脱氧产物以Al-O和Al-Mg-O为主,粒径更细小,夹杂物分布更加弥散,钢中Al2O3夹杂物聚集程度明显降低,Al-Mg-O夹杂对氧化铝夹杂起到分散作用。镁铝合金在超低碳钢钢种进行的推广应用,表明镁铝合金脱氧罐次的冷轧板均没有出现夹杂废品。

关键词：镁合金超低碳钢脱氧夹杂物

数字时代的“老有所乐”:互联网使用与城市老年人休闲生活质量

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旅游科学 2024年第7期38卷 37-55页

作者：吕宁徐玲玲朱志胜北京第二外国语学院旅游科学学院北京100024 北京旅游发展研究基地北京100024

更高质量的休闲生活是积极老龄化战略的重要议题,也是衡量老年群体健康福祉的关键指标。文章利用2018年中国综合社会调查数据,基于网络增益效应的理论视角,实证检验了互联网使用对城市老年人休闲生活质量的影响及其作用机制。研究发现,... 详细信息

更高质量的休闲生活是积极老龄化战略的重要议题,也是衡量老年群体健康福祉的关键指标。文章利用2018年中国综合社会调查数据,基于网络增益效应的理论视角,实证检验了互联网使用对城市老年人休闲生活质量的影响及其作用机制。研究发现,目前我国城市老年人的休闲活动可归结为成就型、怡情型、娱乐型、闲散型4种基本类型,且以娱乐型和闲散型为主。互联网使用显著提高了城市老年人的休闲生活质量,使用互联网的城市老年人拥有更高的休闲频率与更多的休闲品类,并且互联网使用显著提高了老年群体参与成就型与怡情型等发展型的休闲活动。社会资本在互联网使用与城市老年人休闲生活质量的影响关系中具有中介作用。互联网使用通过提高城市老年人的社会资本进而促进休闲生活质量的提升。异质性分析结果表明,互联网使用对城市老年人休闲生活质量的促进作用存在显著的异质性,来自东部地区及相对低龄和低经济社会地位的城市老年人从互联网使用中获得了更高质量的休闲生活。研究成果对深入推进积极老龄化战略和开发老年休闲消费市场均具有重要借鉴价值。

关键词：互联网使用休闲生活质量老年人社会资本积极老龄化

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逆风前行:台风灾害与银行风险行为

金融研究 2024年第1期 19-37页

作者：吕勇斌李志生郭懿晨中南财经政法大学金融学院湖北武汉430073 西南财经大学金融学院四川成都610074

台风作为一种强度大、高频发的极端天气,不仅对经济活动造成巨大破坏,也会对金融部门产生强烈冲击,引发一系列连锁反应和反馈行为。本文以2010—2019年台风事件作为自然实验,选取295家地方性商业银行作为研究对象,匹配3452家A股上市公... 详细信息

台风作为一种强度大、高频发的极端天气,不仅对经济活动造成巨大破坏,也会对金融部门产生强烈冲击,引发一系列连锁反应和反馈行为。本文以2010—2019年台风事件作为自然实验,选取295家地方性商业银行作为研究对象,匹配3452家A股上市公司的经营数据,运用风场模型构建城市级台风破坏指标,从企业经营渠道探讨台风灾害对银行风险行为的影响。研究发现,台风灾害导致银行信贷违约风险显著上升,促使银行提高风险承担水平。机制分析表明,台风灾害降低了企业生产效率、造成了企业固定资产损失,由此导致当地银行信用违约风险上升。进一步分析表明,台风灾害影响金融机构的传导过程并非是单向的。银行信贷违约风险的上升降低了银行风险偏好,引发更为谨慎的信贷决策,传导至企业层面,使得企业融资成本上升,最终放大台风灾害对整个经济金融活动的影响。本文为银行气候风险治理提供了新的经验证据。

关键词：台风灾害银行风险行为生产效率资产损失融资约束