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Nano Research 2016年第8期9卷 2234-2243页

作者： chencheng sun Qiuchun Dong Jun Yang Ziyang Dai Jianjian Lin Peng Chen Wei Huang Xiaochen Dong Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Tech University (NanfingTech) 30 South Puzhu Road Nanjing 211816 China School of Chemical and Biomedical Engineering Nanyang Technological University 62 Nanyang Drive 637459 Singapore Singapore

The development of efficient, low-cost, for water splitting, particularly those stable, non-noble-metal electrocatalysts that can catalyze both the hydrogen evolution reaction （HER） at the cathode and oxygen evolution reaction （OER） at the anode, is a challenge. We have developed a facile method for synthesizing CoSe2 nanoparticles uniformly anchored on carbon fiber paper （CoSe2/CF） via pyrolysis and selenization of in situ grown zeolitic imidazolate framework-67 （ZIF-67）. CoSe2/CF shows high and stable catalytic activity in both the HER and OER in alkaline solution. At a low cell potential, i.e., 1.63 V, a water electrolyzer equipped with two CoSe2/CF electrodes gave a water-splitting current of 10 ***-2. At a current of 20 mA-cm-2, it can operate without degradation for 30 h. This study not only offers a cost-effective solution for water splitting but also provides a new strategy for developing various catalytic nanostructures by changing the metal-organic framework precursors.

关键词： metal-organic framework cobalt selenide electrocatalyst overall water splitting

Nanowires assembled from MnCo2O4@C nanoparticles for water splitting and all-solid-state supercapacitor

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Nano Research 2016年第5期9卷 1300-1309页

作者： chencheng sun Jun Yang Ziyang Dai Xuewan Wang Yufei Zhang Laiquan Li Peng Chen Wei Huang Xiaochen Dong Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Tech University (Nanjing Tech) 30 South Puzhu Road Nanjing 211816 China School of Chemical and Biomedical Engineering Nanyang Technological University 62 Nanyang Drive 637459 Singapore

The rational design of earth-abundant catalysts with excellent water splitting activities is important to obtain clean fuels for sustainable energy devices. In this study, mixed transition metal oxide nanoparticles encapsulated in nitrogendoped carbon （denoted as AB2O4@NC） were developed using a one-pot protocol, wherein a metal-organic complex was adopted as the precursor. As a proof of concept, MnCo2O4@NC was used as an electrocatalyst for water oxidation, and demonstrated an outstanding electrocatalytic activity with low overpotential to achieve a current density of 10 mA·cm^-1 0/10 = 287 mV）, small Tafel slope （55 mV·dec^-1）, and high stability （96% retention after 20 h）. The excellent electrochemical performance benefited from the synergistic effects of the MnCo2O4 nanoparticles and nitrogen-doped carbon, as well as the assembled mesoporous nanowire structure. Finally, a highly stable all-solid-state supercapacitor based on MnCo2O4@NC was demonstrated （1.5% decay after 10,000 cycles）.

关键词： transition metal oxide nitrogen doped carbon oxygen evolution supercapacitor

Graphene and cobalt phosphide nanowire composite as an anode material for high performance lithium-ion batteries

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Nano Research 2016年第3期9卷 612-621页

作者： Jun Yang Yu Zhang chencheng sun Hongzheng Liu Laiquan Li Weili Si Wei Huang Qingyu Yan Xiaochen Dong Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Tech University (NanjingTech) Nanjing 211816 China School of Materials Science and Engineering Nanyang Technological University Singapore 639798 Singapore

The synthesis of a composite of cobalt phosphide nanowires and reduced graphene oxide （denoted CoP/RGO） via a facile hydrothermal method combined with a subsequent annealing step is reported. The resulting composite presents large specific surface area and enhanced conductivity, which can effectively facilitate charge transport and accommodates variations in volume during the lithiation/de-lithiation processes. As a result, the CoP/RGO nanocomposite manifests a high reversible specific capacity of 960 mA·h-g-1 over 200 cycles at a current density of 0.2 A·g-1 （297 mA·h·g-1 over 10,000 cycles at a current density of 20 A.g-1） and excellent rate capability （424 mA·h·g-1 at a current density of 10 A·g-1）.

关键词： cobalt phosphide nanowires anodes lithium-ion battery

Ultradurable,freeze-resistant,and healable MXene-based ionic gels for multi-functional electronic skin

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Nano Research 2022年第5期15卷 4421-4430页

作者： Yao Lu Xinyu Qu Siying Wang Ye Zhao Yanfang Ren Wenli Zhao Qian Wang chencheng sun Wenjun Wang Xiaochen Dong Key Laboratory of Flexible Electronics(KLOFE)&Institute of Advanced Materials(IAM) School of Physical and Mathematical SciencesNanjing Tech University(NanjingTech)30 South Puzhu RoadNanjing 211816China School of Physical Science and Information Technology Liaocheng UniversityLiaocheng 252059China School of Electronic and Information Engineering Changshu Institute of TechnologyChangshu 215500China

Hydrogel is a potential matrix material of electronic-skins(E-skins)because of its excellent ductility,tunability,and ***,hydrogel-based E-Skins will inevitably lose their sensing performance in practical applications for water loss,physical damage,and ambient *** remains a challenge to manufacture highly durable gel-based ***,an E-Skin is fabricated by introducing ionic liquids(ILs)into MXene-composited binary polymer *** obtained ionic gel shows excellent mechanical properties,strong adhesion,and superior tolerance to harsh *** E-skin exhibits high sensitivity to both strain and pressure in a wide range of deformations,which enables a monitoring function for various human motions and physiological ***,the E-skin shows consistent electrical response after being stored in the open air for 30 days and can be quickly healed by irradiation with 808 nm near-infrared light,originating from the photo-thermal effect induced self-healing *** is noteworthy that the E-skin also reveals a highly sensitive perception of temperature and near-infrared light,displaying the promising potential applications in the multifunctional flexible sensor.

关键词： E-skins MXene environment resistance photothermal effect flexible sensor

In situ deposited multilayer integrated hydrogels for deformable and stretchable supercapacitors

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Science China Materials 2022年第2期65卷 373-382页

作者： Yanfang Ren chencheng sun Yunlong Liu Ying Hong Qian Wang Wenli Zhao Shuhong Li Wenjun Wang Xiaochen Dong Shandong Provincial Key Laboratory of Optical Communication Science and Technology School of Physical Science and Information TechnologyLiaocheng UniversityLiaocheng 252059China Key Laboratory of Flexible Electronics(KLOFE)&Institute of Advanced Materials(IAM) School of Physical and Mathematical SciencesNanjing Tech University(NanjingTech)Nanjing 211800China School of Electronic and Information Engineering Changshu Institute of TechnologyChangshu 215500China

Hydrogel systems promote the development of flexible energy storage devices because of their inherent mechanical elasticity and ionic ***,achieving stable energy storage capacity under violent mechanical deformation is still a challenge for hydrogel *** this work,an all-in-one integrated supercapacitor(AISC)was assembled using in situ deposited polyaniline/graphene oxide nanocomposites for both sides of the incorporated ionic hydrogel *** assembly process of the AISC was greatly simplified,and the displacement and separation of the multilayer structured hydrogel complex were avoided during mechanical *** hydrogel electrolyte with ionic additives exhibited strong adhesion and flexibility,and high ionic conductivity,thereby ensuring the excellent specific capacitance and rate performance of the *** specific capacitances of the AISC were 222.8 mF cm^(−2) at the current density of 0.2 mA cm^(−2) and 151.7 mF cm^(−2) at 3.2 mA cm^(−2).The capacitance retention rate was 68.1%.The energy density of a piece of the device reached 44.6μW h cm^(−2) at a power density of 120.0μW cm^(−2).Moreover,reliable and reproducible energy storage was acquired under bending,compression,and stretching *** AISC was also easily assembled in series to power a light-emitting diode(LED)*** work provides a facile approach to the construction of flexible supercapacitors for the development of energy storage devices in flexible electronics.

关键词： hydrogel electrolyte flexibility polyaniline/graphene oxide supercapacitor

Bioinspired wet-resistant organogel for highly sensitive mechanical perception

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Science China Materials 2022年第8期65卷 2262-2273页

作者： Wen Zhao Dingli Gan Xinyu Qu Jingying Liu Yunlong Liu Qian Wang Wenjun Wang chencheng sun Xiaochen Dong Key Laboratory of Flexible Electronics(KLOFE)&Institute of Advanced Materials(IAM) School of Physical and Mathematical SciencesNanjing Tech University(NanjingTech)Nanjing 211816China School of Physical Science and Information Technology Liaocheng UniversityLiaocheng 252059China School of Electronic and Information Engineering Changshu Institute of TechnologyChangshu 215500China Department of Mechanical Engineering City University of Hong KongHong Kong 999077China

Smart flexible electronics with underwater motion detection have become a promising research aspect in intelligent *** by the strong adaptability of marine creatures to complex underwater environments,conventional biocompatible hydrogels are worth developing into organogels with preferred underwater adhesive properties,hydrophobic and antiswelling performance,and motion perception ***,a highly sensitive organogel sensor exhibiting good hydrophobicity,electromechanical properties,and adhesion properties was prepared for underwater utilization by regulating the chemical components and internal *** synergistic effect of massive reversible noncovalent bonds ensures the organogel’s excellent underwater adhesion to multifarious ***,the interactions of hydrophobic conductive fillers and the dynamic hydrophobic associations in the organogel endow it with satisfactory hydrophobic performance(contact angle of111.8°)and antiswelling property(equilibrium swelling ratio of-31%after 15-day immersion).The fabricated flexible organogel strain sensor exhibits high sensitivity(gauge factor of1.96),ultrafast response rate(79.1 ms),low limit of detection(0.45 Pa),and excellent cyclic stability(1044 tensile cycles followed by 3981 compressive cycles).Results demonstrate the proposed organogel’s precise perception of sophisticated human motions in air and underwater,which expands its application scenarios.

关键词： flexible electronics organogel hydrophobic association water-resistant underwater application

1500℃极端高温环境下高超声速飞行器轻质隔热材料热/振联合试验

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航空学报 2020年第7期41卷 210-219页

作者：吴大方林鹭劲吴文军孙陈诚北京航空航天大学航空科学与工程学院北京100083 航天材料及工艺研究所先进功能复合材料技术重点实验室北京100076

远程高超声速飞行器处于极为恶劣的气动加热与振动耦合环境中,长时间的高温与振动载荷相互叠加会导致飞行器热防护材料出现裂纹、错位、剥离或脱落,甚至会引发致命的安全事故。因此热防护材料在极端高温环境下的地面热/振联合试验测试,... 详细信息

远程高超声速飞行器处于极为恶劣的气动加热与振动耦合环境中,长时间的高温与振动载荷相互叠加会导致飞行器热防护材料出现裂纹、错位、剥离或脱落,甚至会引发致命的安全事故。因此热防护材料在极端高温环境下的地面热/振联合试验测试,对于高超声速飞行器的安全可靠性设计极为重要。建立高温与振动复合试验环境,设法解决轻质多孔隔热材料在强振动下,表面温度难于准确测量与控制的难题,制作水冷式隔热装置保护价格昂贵的振动激励设备等,实现了1 500℃高温环境下高超声速飞行器轻质隔热材料的热/振联合试验。得到非金属隔热材料陶瓷纤维板内部的断裂形貌及裂纹断面特征。根据试验前、后材料的表观及微观变化以及内部结合剂的变化等试验结果,对材料进行改进。经过试验测试后,达到了使用要求。本文建立的1 500℃极端高温环境下的热/振联合试验系统及试验结果为远程高超声速飞行器热防护材料的抗振动能力评估、隔热效果确定以及材料性能的改进提供了重要支撑。

关键词：高超声速飞行器高温振动隔热材料热/振联合试验

Mg含量对氢化燃烧合成MgH_2水解制氢性能的影响

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稀有金属材料与工程 2015年第4期44卷 945-949页

作者：孙陈诚王金刘虎朱云峰李李泉南京工业大学江苏南京210009

系统研究了Mg的添加量及球磨时间对氢化燃烧合成(Hydriding Combustion Synthesis,HCS)Mg H2在Mg Cl2溶液中水解释氢动力学性能的影响。Mg H2-60%Mg(质量分数,下同)经3 h球磨后在5 min内释氢量为993 m L/g(转化率达80%),经15 min可完全... 详细信息

系统研究了Mg的添加量及球磨时间对氢化燃烧合成(Hydriding Combustion Synthesis,HCS)Mg H2在Mg Cl2溶液中水解释氢动力学性能的影响。Mg H2-60%Mg(质量分数,下同)经3 h球磨后在5 min内释氢量为993 m L/g(转化率达80%),经15 min可完全水解,副产物为单一的Mg(OH)2。研究表明:镁的添加在降低制氢成本的同时,一方面可提高释氢动力学性能,另一方面也便于副产物回收再生。

关键词：镁镁基氢化物球磨水解制氢

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高效氯氰菊酯微胶囊的制备、表征及释放性能

高等学校化学学报 2017年第11期38卷 1974-1981页

作者：冯建国杨关天袁小勇陈麒丞孙陈铖袁树忠扬州大学园艺与植物保护学院扬州225009 赣南师范大学国家脐橙工程技术研究中心赣州341000

以高效氯氰菊酯为芯材,乙基纤维素为壁材,采用溶剂蒸发法制备了微胶囊,并对其理化性能进行表征,通过单因素实验研究了工艺参数对微胶囊外观形貌、粒径大小及分布、包封率、载药量和缓释性能的影响.结果表明,乳化剂种类和剪切时间可以显... 详细信息

以高效氯氰菊酯为芯材,乙基纤维素为壁材,采用溶剂蒸发法制备了微胶囊,并对其理化性能进行表征,通过单因素实验研究了工艺参数对微胶囊外观形貌、粒径大小及分布、包封率、载药量和缓释性能的影响.结果表明,乳化剂种类和剪切时间可以显著影响微胶囊的外观形貌;随着乳化剂用量增大,微胶囊粒径减小,分布变窄,当Tween-80用量从4%增加至8%时,微胶囊平均粒径从59.9μm减少到29.8μm,跨距也从1.21减少到0.72.随着芯壁比(质量比)减小,微胶囊粒径和包封率均逐渐增大,载药量逐渐减小,当芯壁比为1:1.75时,包封率可以达到70%以上.微胶囊释放动力学模型符合Ritger-Peppas模型(lg Q=lgk+nlgt);平均粒径相近而载药量不同时,初期载药量最小的样品释放速率慢,累积释放率低;载药量相近而平均粒径不同时,粒径大的样品释放速率低,累积释放率也低.

关键词：微胶囊溶剂蒸发粒径载药量累积释放

电子堆积工程调控二硒化镍纳米片助力具有快速动力学的钠离子电池

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Science China Materials 2023年第1期66卷 69-78页

作者：刘静谢娟董慧龙魏怀鑫孙陈诚杨骏耿洪波 School of Electronic and Information Engineering Changshu Institute of TechnologyChangshu 215500China School of Material Science&Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Materials Engineering Changshu Institute of TechnologyChangshu 215500China School of Chemistry and Life Sciences Suzhou University of Science and TechnologySuzhou 215009China School of Materials Science and Engineering Jiangsu UniversityZhenjiang 212013China

近年来,钠离子电池电极材料引起了研究者们极大的兴趣.过渡金属硒化物具有高钠离子存储容量,是一种具有前景的钠离子电池负极材料.然而,该类材料较低的电导率以及钠离子脱嵌过程中巨大的体积膨胀,导致了其较差的钠离子电池倍率性能和循... 详细信息

近年来,钠离子电池电极材料引起了研究者们极大的兴趣.过渡金属硒化物具有高钠离子存储容量,是一种具有前景的钠离子电池负极材料.然而,该类材料较低的电导率以及钠离子脱嵌过程中巨大的体积膨胀,导致了其较差的钠离子电池倍率性能和循环寿命.本工作采用二维的双金属有机框架材料为模板,设计制造了多孔铁掺杂NiSe_(2)纳米片材料(Fe-NiSe_(2)@C NSs),该结构具有充分暴露的活性位点,增强的电导率,丰富的空隙和短电子传输路径,易于适应钠离子脱嵌带来的体积膨胀应力,并具有快速的电荷转移动力学.作为钠离子电池负极材料时,Fe-NiSe_(2)@C NSs表现出高比容量(5 A g^(-1)电流密度下为302 mA h g^(-1))和优异的循环稳定性(5 A g^(-1)的电流密度下循环1000圈容量保持率为99%).此外,该材料在与Na3V2(PO4)2O2F正极材料组成的钠离子全电池中也表现出了高能量密度(107 W h kg^(-1)).大量非原位表征和理论计算进一步验证了Fe掺杂使电子密度增大,对于提升Fe-NiSe_(2)@C NSs的钠离子电池综合性能具有重要意义.本研究为制备高性能钠离子电池电极材料提供了新思路.

关键词：钠离子电池循环寿命正极材料膨胀应力金属硒化物高能量密度金属有机框架材料存储容量