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Journal of Energy Chemistry 2021年第7期30卷 256-263页

作者： Zhipeng Yu junyuan xu Isilda Amorim Yue Li Lifeng Liu International Iberian Nanotechnology Laboratory(INL) Av Mestre Jose Veiga4715-330 BragaPortugal Laboratory of Catalysis and Materials(LSRE-LCM) Faculdade de EngenhariaUniversidade do PortoRua Dr.Roberto Frias4200-465 PortoPortugal Department of Chemistry University of MinhoGualtar Campus4715-057 BragaPortugal

The small organic molecule electro-oxidation(OMEO) and the hydrogen evolution(HER) are two important half-reactions in direct liquid fuel cells(DLFCs) and water electrolyzers,respectively,whose performance is largely hindered by the low activity and poor stability of ***,we demonstrate that a simple phosphorization treatment of commercially available palladium-nickel(PdNi) catalysts results in multifunctional ternary palladium nickel phosphide(PdNiP) catalysts,which exhibit substantially enhanced electrocatalytic activity and stability for HER and OMEO of a number of molecules including formic acid,methanol,ethanol,and ethylene glycol,in acidic and/or alkaline *** improved performance results from the modification of electronic structure of palladium and nickel by the introduced phosphorus and the enhanced corrosion resistance of *** simple phosphorization approach reported here allows for mass production of highly-active OMEO and HER electrocatalysts,holding substantial promise for their large-scale application in direct liquid fuel cells and water electrolyzers.

关键词： PdNiP Multifunctional catalyst Phosphorization Small molecule electro-oxidation Hydrogen evolution

Oxygen electrochemistry in Li-O2 batteries probed by in situ surface-enhanced Raman spectroscopy

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SusMat 2021年第3期1卷 345-358页

作者： Jiawei Wang Lipo Ma junyuan xu Ye xu Ke Sun Zhangquan Peng Laboratory of Advanced Spectro-electrochemistry and Li-ion Batteries Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalianLiaoningP.R.China Tianmu Lake Institute of Advanced Energy Storage Technologies Co.Ltd. LiyangJiangsuP.R.China Department of Chemical Engineering Louisiana State UniversityBaton RougeLouisianaUSA School of Applied Physics and Materials Wuyi UniversityJiangmenGuangdongP.R.China

Surface-enhanced Raman spectroscopy(SERS),as a nondestructive and ultrasensitive single molecular level characterization technique,is a powerful tool to deeply understand the interfacial electrochemistry reaction mechanism involved in energy conversion and storage,especially for oxygen electrochemistry in Li-O2 batteries with unrivaled theoretical energy *** can provide precise spectroscopic identification of the reactants,intermediates and products at the electrode|electrolyte interfaces,independent of their physical states(solid and/or liquid)and crystallinity ***,SERS’s power to resolve different isotopes can be exploited to identify the mass transport limitation and reactive sites of the passivated *** this review,the application of in situ SERS in studying the oxygen electrochemistry,specifically in aprotic Li-O2 batteries,is *** ideas and concepts covered in this review are also extended to the perspectives of the spectroelectrochemistry in general aprotic metal-gas batteries.

关键词： in situ SERS isotope labeling oxygen electrochemistry reaction mechanism surface-enhanced Raman spectroscopy

Non-peripherally octaalkyl-substituted nickel phthalocyanines used as non-dopant hole transport materials in perovskite solar cells

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Chinese Physics B 2021年第10期30卷 698-704页

作者： Fei Qi Bo Wu junyuan xu Qian Chen Haiquan Shan Jiaju xu Zong-Xiang xu Department of Chemistry Southern University of Science and TechnologyShenzhen 518000China Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices Southern University of Science and TechnologyShenzhen 518000China

This report presents two non-perihperally octaalkyl-substituted nickel phthalocyanines(NiPcs),namely,NiEt2Pc and NiPr_(2)Pc,for use as dopant-free hole transport materials in perovskite solar cells(PSCs).The length extension of the alkyl chains from ethyl to propyl significantly tunes the NiPcs’energy levels,thus reducing charge carrier recombination at the perovskite/hole transport layer(HTL)interface and leading to higher open-circuit voltage(VOC)and short-circuit current density(JSC)observed for the NiPr_(2)Pc-based *** higher charge carrier mobility,higher thin film crystallinity,and lower surface roughness of the NiPr_(2)Pc HTL compared with that of the NiEt2Pc one also lead to higher JSC and fill factor(FF)observed for the NiPr_(2)Pc-based ***,the NiPr_(2)Pc-based PSC exhibits a higher power conversion efficiency(PCE)of 14.07%than that of the NiEt2Pc-based device(8.63%).

关键词： perovskite solar cells metal phthalocyanines hole transport layers

Boosting acidic water oxidation performance by constructing arrays-like nanoporous Ir_(x)Ru_(1−x)O_(2) with abundant atomic steps

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Nano Research 2022年第7期15卷 5933-5939页

作者： Junjie Li Zan Lian Qiang Li Zhongchang Wang Lifeng Liu Francis Leonard Deepak Yanping Liu Bo Li junyuan xu Zuxin Chen CAS Key Laboratory of Functional Materials and Devices for Special Environments Xinjiang Technical Institute of Physics&ChemistryChinese Academy of SciencesUrumqi 830011China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China International Iberian Nanotechnology Laboratory(INL) Braga 4715-330Portugal Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Mechanical Engineering University of Shanghai for Science and TechnologyShanghai 200093China School of Physics and Electronics Hunan Key Laboratory for Super-microstructure and Ultrafast ProcessCentral South UniversityChangsha 410083China Laboratory of Advanced Spectro-electrochemistry and Li-ion Batteries Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China Institute of Semiconductors South China Normal UniversityGuangzhou 510631China

The fabrication of electrocatalysts with high activity and acid stability for acidic oxygen evolution reaction(OER)is an urgent need,yet extremely ***,we report the design and successful fabrication of a high performance self-supported cogwheel arrays-like nanoporous Ir_(x)Ru_(1−x)O_(2) catalyst with abundant atomic steps for acidic OER using a facile alloy-spinningelectrochemical activation method that allows large-scale *** obtained Ir_(x)Ru_(1−x)O_(2) catalysts merely need overpotentials of 211 and 295 mV to deliver catalytic current densities of 10 and 300 mA·cm^(−2) in 0.5 M H_(2)SO_(4),respectively,and can sustain constant OER electrolysis for at least 140 h at a high current density of 300 mA·cm^(−2).Further density functional theory(DFT)calculations uncover that such high intrinsic activities mainly originate from the largely exposed high-index atomic step planes,which markedly lower the limiting potential of the rate-determining step(RDS)of *** findings provide an insight into the exploration of high performance electrocatalysts,and open up an avenue for further developing the state-of-theart Ir and/or Ru-based catalysts for large-scale practical applications.

关键词： oxygen evolution reaction(OER)electrolysis nanoporous structure Ir_(x)Ru_(1−x)O_(2) defects atomic steps

Plasma tailoring in WTe_(2)nanosheets for efficiently boosting hydrogen evolution reaction

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Journal of Materials Science & Technology 2021年第19期78卷 170-175页

作者： Xin Wang Jun Wang Bin Wei Nan Zhang junyuan xu Hongwei Miao Lifeng Liu Chenliang Su Ying Li Zhongchang Wang International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education Institute of Microscale OptoelectronicsShenzhen UniversityShenzhen518060China International Iberian Nanotechnology Laboratory(INL) Avenida Mestre Jose Veiga4715-330BragaPortugal Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials Guangdong Engineering Technology Research Center of Efficient Green Energy and Environment Protection MaterialsGuangdong Provincial Engineering Technology Research Center for Wastewater Management and TreatmentSchool of EnvironmentSchool of Physics and Telecommunication EngineeringSouth China Normal UniversityGuangzhou510006China School of Electrical Engineering and Automation Wuhan UniversityWuhan430000China

2D transition metal dichalcogenides(TMDs)have been considered as promising non-precious electrocatalysts for the hydrogen evolution reaction(HER).However,their limited active sites and poor electric conductivity pose a significant hurdle to their HER performance,resulting in a large ***,we report the defect engineering in ultrathin tungsten telluride(WTe_(2))nanosheets with semimetal nature to improve hydrogen evolution *** find that the oxygen plasma etching imposes a cutting effect on WTe_(2)nanosheets,resulting in a large number of tungsten ***,the sample after plasma treatment for 10 min shows a feather-like structure with an overpotential of 251m V at 10 m A/cm~2and a Tafel slope of 94 m V/dec,which is 4 times lower than the Tafel slope of pristine *** first-principles calculations shed light on the evolution of defect-rich WTe_(2)nanosheets and offer rational explanation to their superiority in efficient hydrogen evolution.

关键词： Defects WTe_(2) Hydrogen evolution reaction Plasma etching Electrocatalysts

Conformal and continuous deposition of bifunctional cobalt phosphide layers on p-silicon nanowire arrays for improved solar hydrogen evolution

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Nano Research 2018年第9期11卷 4823-4835页

作者： Sitaramanjaneva Mouli Thalluri Jerome Borme Kang Yu junyuan xu Isilda Amorim Joao Gaspar Liang Qiao Paulo Ferreira Pedro Alpuim Lifeng Liu International Iberian Nanotechnology Laboratory (INL) Av. Mestre. Jose Veiga Braga 4715-330 Portugal Materials Science and Engineering Program University of Texas at Austin Austin TX78712 USA Deportment of Chemistry State Key Laboratory of Molecular Engineering of Polymers and Institute of Biomedical Sciences Fudon University Shanghai 200433 China Mechanical Engineering Department and IDMEC Instituto Superior Tdcnico University of Lisbon Av. Rovisco Pais Lisboa 1049-007 Portugal Center of Physics University of Minho Braga 4710-057 Portugal

Vertically aligned p-silicon nanowire （SiNW） arrays have been extensively investigated in recent years as promising photocathodes for solar-driven hydrogen evolution. However, the fabrication of SiNW photocathodes with both high photoelectrocatalytic activity and long-term operational stability using a simple and affordable approach is a challenging task. Herein, we report conformal and continuous deposition of a di-cobalt phosphide （C02P） layer on lithography- patterned highly ordered SiNW arrays via a cost-effective drop-casting method followed by a low-temperature phosphorization treatment. The as-deposited C02P layer consists of crystalline nanoparticles and has an intimate contact with SiNWs, forming a well-defined SiNW@Co2P core/shell nanostructure. The conformal and continuous Co2P layer functions as a highly efficient catalyst capable of substantially improving the photoelectrocatalytic activity for the hydrogen evolution reaction （HER） and effectively passivates the SiNWs to protect them from photo-oxidation, thus prolonging the lifetime of the electrode. As a consequence, the SiNW@Co2P photocathode with an optimized C02P layer thickness exhibits a high photocurrent density of -21.9 mA·cm^-2 at 0 V versus reversible hydrogen electrode and excellent operational stability up to 20 h for solar-driven hydrogen evolution, outperforming many nanostructured silicon photocathodes reported in the literature. The combination of passivation and catalytic functions in a single continuous layer represents a promising strategy for designing high-performance semiconductor photoelectrodes for use in solar-driven water splitting, which may simplify fabrication procedures and potentially reduce production costs.

关键词： solar-driven hydrogenevolution silicon nanowire cobalt phosphide photoelectrochemical water splitting drop-casting

Stable overall water splitting in an asymmetric acid/ alkaline electrolyzer comprising a bipolar membrane sandwiched by bifunctional cobalt-nickel phosphide nanowire electrodes

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Carbon Energy 2020年第4期2卷 646-655页

作者： junyuan xu Isilda Amorim Yue Li Junjie Li Zhipeng Yu Bingsen Zhang Ana Araujo Nan Zhang Lifeng Liu International Iberian Nanotechnology Laboratory(INL) BragaPortugal Department of Chemistry Centre of ChemistryUniversity of MinhoBragaPortugal Laboratory of Catalysis and Materials(LSRE-LCM) Faculdade de EngenhariaUniversidade do PortoPortoPortugal Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyangLiaoningChina

Water splitting has been proposed to be a promising approach to producing clean hydrogen *** two half-reactions of water splitting,that is,the hydrogen evolution reaction(HER)and oxygen evolution reaction(OER),take place kinetically fast in solutions with completely different pH *** HER and OER to simultaneously occur under kinetically favorable conditions while using exclusively low-cost,earth-abundant electrocatalysts is highly desirable but remains a ***,we demonstrate that using a bipolar membrane(BPM)we can accomplish HER in a strongly acidic solution and OER in a strongly basic solution,with bifunctional self-supported cobaltnickel phosphide nanowire electrodes to catalyze both *** asymmetric acid/alkaline water electrolysis can be achieved at 1.567 V to deliver a current density of 10 mA/cm2 with ca.100%Faradaic ***,using an“irregular”BPM with unintentional crossover the voltage needed to afford 10 mA/cm2 can be reduced to 0.847 V,due to the assistance of electrochemical neutralization between acid and ***,we show that BPM-based asymmetric water electrolysis can be accomplished in a circulated single-cell electrolyzer delivering 10 mA/cm2 at 1.550 V and splitting water very stably for at least 25 hours,and that water electrolysis is enabled by a solar panel operating at 0.908 V(@13 mA/cm2),using an“irregular”*** asymmetric water electrolysis is a promising alternative to conventional proton and anion exchange membrane water electrolysis.

关键词： bipolar membrane cobalt nickel phosphide hydrogen production noble metalfree water splitting

西北太平洋边缘新生代盆地成因(中):连锁右行拉分裂谷系统

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石油与天然气地质 2000年第3期21卷 185-190页

作者：许浚远张凌云中国地质大学石油系湖北武汉430074

在平面应变等的一级近似假定下 ,恢复了边缘盆地拉分后印度板块与欧亚板块相对压缩量和南海、日本海盆地的拉分量。得出两板块碰撞时 ,其间缝合线在现今位置南约 2 6°(沿东经 85°方向 ) ,南海北岸在现今位置南约 14°,日本海北岸相对... 详细信息

在平面应变等的一级近似假定下 ,恢复了边缘盆地拉分后印度板块与欧亚板块相对压缩量和南海、日本海盆地的拉分量。得出两板块碰撞时 ,其间缝合线在现今位置南约 2 6°(沿东经 85°方向 ) ,南海北岸在现今位置南约 14°,日本海北岸相对西南日本在南约 4 5°位置 ,而西南日本岛本身在现今位置南约 8 5°位置。印度板块和欧亚板块碰撞后 ,加速了后者向北退却 ,西北太平洋边缘发生右行剪切 ,在老第三纪 (或至早中新世末 )形成南海、日本海、菲律宾海、苏禄海及苏拉维西海等右行拉分裂谷 ,它们共同构成巨大的连锁右行拉分裂谷系统 ,以保持运动学平衡。秦岭和贝加尔 -斯塔诺夫左行剪切带为该系统派生的R′断裂。在全球构造上 ,欧亚板块向北退却与美洲板块南移是和谐的。

关键词：西北太平洋边缘盆地拉分盆地断裂右行剪切

西北太平洋边缘新生代盆地成因(上):成盆机制述评

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石油与天然气地质 2000年第2期21卷 93-98页

作者：许浚远张凌云中国地质大学石油系湖北武汉430074

全面地简述了西北太平洋边缘新生代盆地成盆机制各种学说 ,强调了成盆机制分析原则。按弧后主动扩张说、弧后被动拉张说、局部区域左行挤出说等 ,演绎出的盆地空间几何形态与实际情形不符 ,演绎出的块体运动及位移在空间上不能平衡。局... 详细信息

全面地简述了西北太平洋边缘新生代盆地成盆机制各种学说 ,强调了成盆机制分析原则。按弧后主动扩张说、弧后被动拉张说、局部区域左行挤出说等 ,演绎出的盆地空间几何形态与实际情形不符 ,演绎出的块体运动及位移在空间上不能平衡。局部区域的右行剪切拉分说是揭示西北太平洋边缘盆地成因的良好开端。以日本海和南海为例 ,讨论了边缘海“洋壳基底”性质 ,认为所谓的“洋壳”实为变薄的陆壳。现行边缘海的年龄值没有实际意义。

关键词：西北太平洋边缘新生代盆地成因成盆机制

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断层视活动与真实活动的探讨

断块油气田 2010年第1期17卷 32-34页

作者：占王忠许浚远中国地质大学资源学院湖北武汉430074

描述生长断层的主要活动参数(生长指数、古落差、活动速率等)都没有考虑断层上下盘地层的压实作用对断层活动性造成的影响,通过统计的这些活动参数描述断层只能认为是对断层"视活动"的描述,对于断层真实活动的描述必须将压实作用考虑进... 详细信息

描述生长断层的主要活动参数(生长指数、古落差、活动速率等)都没有考虑断层上下盘地层的压实作用对断层活动性造成的影响,通过统计的这些活动参数描述断层只能认为是对断层"视活动"的描述,对于断层真实活动的描述必须将压实作用考虑进去。文中以活动速率为例,对计算生长断层活动速率方法进行校正,得出正确计算活动速率方法的公式。当研究断层为正断层时,按照传统方法得到的断层"视活动"速率将小于断层真实活动速率;研究断层为逆断层时,"视活动"活动速率将大于断层真实活动速率。探讨生长断层真实活动参数时,必须剔除压实作用对断层活动参数的干扰,从而对断层真实活动性以及演化历史有更清晰的探讨。

关键词：活动速率视活动真实活动压实校正