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Novel design and synthesis of 1D bamboo-like CNTs@Sn_(4)P_(3)@C coaxial nanotubes for long-term sodium ion storage

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Green Energy & Environment 2022年第6期7卷 1199-1205页

作者： Qianyu zhang Yuling Xu Lifeng Qiu Axue Liu Rui Wang longhai zhang Chaofeng zhang Yan-Jie Wang Jiujun zhang Engineering Research Center of Alternative Energy Materials&Devices Ministry of EducationCollege of Materials Science and EngineeringSichuan UniversityChengdu610064China School of Materials Science and Engineering Dongguan University of TechnologyDongguanGuangdong523808China Institute for Sustainable Energy/College of Sciences Shanghai UniversityShanghai200444China School of Chemistry and Chemical Engineering Hefei University of TechnologyHefei230009China

In this work,a novel bamboo-like carbon nanotubes@Sn4P3@carbon(BLCNTs@Sn_(4)P_(3)@C)coaxial nanotubes are designed and prepared using a newly developed hydrothermal method followed by a phophidation *** prepared Sn_(4)P_(3) nanoparticles are uniformly coated and wrapped on the one-dimensional(1D)bamboo-like CNTs,which is covered by a uniform carbon layer to form a sandwich-like structure with Sn_(4)P_(3) in *** inner CNT and outer carbon can effectively maintain the structural stability and serve as the good electron ***,the outer carbon coating layer can effectively keep BLCNTs@Sn_(4)P_(3)@C nanotubes separate each other,preventing aggregation of Sn_(4)P_(3) during charge/discharge when this material is used as anode for sodium ion *** anode of BLCNTs@Sn_(4)P_(3)@C shows excellent reversible capacity and a long cycling of over 2000 *** unique design of coaxial nanotubes is greatly beneficial to the electrochemical performance of Sn_(4)P_(3) for sodium ion storage.

关键词： Bamboo-like coaxial nanotubes Sn_(4)P_(3) Sodium ion batteries Anode

Sandwiching Sulfur into the Dents Between N,O Co-Doped Graphene Layered Blocks with Strong Physicochemical Confinements for Stable and High-Rate Li-S Batteries

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Nano-Micro Letters 2020年第11期12卷 13-24页

作者： Mengjiao Shi Su zhang Yuting Jiang Zimu Jiang longhai zhang Jin Chang Tong Wei Zhuangjun Fan Key Laboratory of Superlight Materials and Surface Technology Ministry of EducationCollege of Material Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001People’s Republic of China Key Laboratory of Energy Materials Chemistry Ministry of EducationKey Laboratory of Advanced Functional MaterialsAutonomous RegionInstitute of Applied ChemistryXinjiang UniversityUrumqi 830046People’s Republic of China State Key Laboratory of Heavy Oil Processing School of Materials Science and EngineeringChina University of PetroleumQingdao 266580People’s Republic of China

The development of lithium-sulfur batteries(LSBs)is restricted by their poor cycle stability and rate performance due to the low conductivity of sulfur and severe shuttle ***,an N,O co-doped graphene layered block(NOGB)with many dents on the graphene sheets is designed as effective sulfur host for high-performance LSB *** sulfur platelets are physically confined into the dents and closely contacted with the graphene scaffold,ensuring structural stability and high *** highly doped N and O atoms can prevent the shuttle effect of sulfur species by strong chemical ***,the micropores on the graphene sheets enable fast Li^+transport through the *** a result,the obtained NOGB/S composite with 76 wt%sulfur content shows a high capacity of 1413 mAh g^-1 at 0.1 C,good rate performance of 433 mAh g^-1 at 10 C,and remarkable stability with 526 mAh g^-1 at after 1000 cycles at 1 C(average decay rate:0.038%per cycle).Our design provides a comprehensive route for simultaneously improving the conductivity,ion transport kinetics,and preventing the shuttle effect in LSBs.

关键词： Graphene Physicochemical confinement Cycle stability Shuttle effect Li-S batteries

Freestanding film formed with Sb-nanoplates embedded in flexible porous carbon nanofibers as a binder-free anode for high-performance wearable potassium-ion battery

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Chinese Chemical Letters 2023年第4期34卷 479-483页

作者： Qi Chen Hongbao Li Hao Li Rui Wang Quanwei Ma longhai zhang Chaofeng zhang Institutes of Physical Science and Information Technology Key Laboratory of Structure and Functional Regulation of Hybrid Material(Ministry of Education)Leibniz Research Center for Materials ScienceAnhui Graphene Engineering LaboratoryAnhui UniversityHefei 230601China

Antimony-based materials are considered as promising anodes for potassium ion batteries due to their high theoretical capacity and low electrode potential. However, the aggregation and bulk expansion of Sb particles in cycling will cause capacity attenuation and poor rate performance. In this paper, Sb nanoplates were designed to be embedded in flexible porous N-dopped carbon nanofibers(Sb@PCNFs)by a simple electrospinning deposition(ESD) method. In this structural design, Sb nanoplates of high capacity were employed as active materials, N-dopped carbon nanofibers were used to improve conductivity and structural stability. The introduction of pore-forming agent enables the nanofibers to possess porous structure, thus buffering the huge volume change and promoting the transfer of electrolyte/*** importantly, the freestanding film can be directly used as a working electrode, reducing the redundancy in the battery and the cost. Benefitting from the favorable structure, the freestanding flexible Sb@PCNFs electrode shows excellent potassium storage performance with a capacity of 314 m Ah/g after 2000 cycles at 500 m A/g. This strategy of employing active material with high capacity in porous and conductive flexible nanofibers represents an effective method of achieving binder-free electrode with good electrochemical performance towards wearable energy storage devices.

关键词： Antimony Porous channel Flexible anode Electrospinning Potassium-ion batteries

Half‑Power Prediction and Its Application on the Energy Management Strategy for Fuel Cell City Bus

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Automotive Innovation 2023年第1期6卷 131-142页

作者： longhai zhang Lina Ning Xueqing Yang Sheng Zeng Tian Yuan Gaopeng Li Changchun Ke Junliang zhang Institute of Fuel Cells School of Mechanical EngineeringShanghai Jiao Tong University800 Dongchuan RoadShanghai 200240China Yutong Bus Co LtdZhengzhou 450016China

The fuel cell hybrid powertrain is a potential power supply system for fuel cell *** underlying problem is that the fuel cell vehicles encounter exhaustive hydrogen *** effectively manage hydrogen consumption,the aim is to propose fuel cell city bus power and control *** underlying idea is to determine the target power of fuel cell through simulation study on fuel cell and battery energy management strategy and road test verifications.A half-power prediction energy management strategy is implemented to predict the target power of the fuel cell in the current time step based on the demand power of the vehicle and the state of charge(SOC)of the battery in the previous time *** offers better understanding of the correlation between fuel cell power and vehicle drive cycle for enabling effective power supply *** research results show that the half-power prediction energy management strategy effectively reduces the hydrogen consumption of the vehicle by 7.1%and the number of battery cycle by 6.0%,compared to the stepped manage-ment strategy of battery *** applied to a 12-m fuel cell city bus—F12,specially designed and manufactured for the Winter Olympic Games in 2022—the fuel economy of 3.7 kg/100 km is achieved in urban road *** study lays a foundation for providing the powertrain configuration and energy management strategy of fuel cell city bus.

关键词： Fuel cell city bus Energy management Half-power prediction

From Cultural Negation to Cultural Hybridity——On Whitman Ah Sing’s Pilgrimage in Tripmaster Monkey His Fake Book

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Comparative Literature:East & West 2006年第1期 125-146页

作者： zhang longhai,Xiamen University

本文运用后殖民主义批评家霍米·巴巴的"超越"理论分析美国华裔作家汤亭亭的《引路人孙行者:他的即兴曲》中的主人翁惠特曼·阿新的心路成长历程。阿新最初否认中国文化,一心向往主流文化,结果使得自己被双重边缘化。经过一系列挫折之后... 详细信息

本文运用后殖民主义批评家霍米·巴巴的"超越"理论分析美国华裔作家汤亭亭的《引路人孙行者:他的即兴曲》中的主人翁惠特曼·阿新的心路成长历程。阿新最初否认中国文化,一心向往主流文化,结果使得自己被双重边缘化。经过一系列挫折之后,阿新开始进行文化商讨,直至后来的文化杂交,成功地获得属于自己、适应自己的文化属性。

关键词：文化否定文化杂交阿新

The effect of aerobic dancing on physical fitness and cognitive function in older adults during the COVID-19 pandemic-a natural experiment

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Sports Medicine and Health Science 2023年第3期5卷 196-204页

作者： Lin Wang Fei Guo Chenxi Zhao Minmin Zhao Chenglei Zhao Jiawei Guo longhai zhang Ling zhang Zheng'ao Li Wenfei Zhu School of Physical Education Shaanxi Normal University710100Xi'anShaanxi ProvinceChina

During the Coronavirus disease(COVID-19),the physical activity of older adults is at a lower *** study aimed to examine the effectiveness of aerobic dancing on physical fitness and cognitive function in older *** conducted a randomized controlled trial with 34 older adults who were assigned into an aerobic dancing group and a control *** dance sessions weekly for 60min were scheduled for the aerobic dancing group for a total of 12 *** fitness,blood pressure,lipids,glucose,cognitive function were assessed before and after the *** adjusted Analysis of Covariance(ANCOVA)was used to determine whether outcome variables varied between groups at pre-test and *** size(Cohen's d)was calculated to determine the differences between groups from baseline to *** 12 weeks,we found that the aerobic dancing group showed significant improvement in memory(portrait memory:F=10.45,p=0.003,d=1.18).The Limit of Stability(LOS)parameters in the aerobic dancing group displayed a significant increase after the intervention(right angle:F=5.90,p=0.022,d=0.60;right-anterior angle:F=4.23,p=0.049,d=0.12).Some beneﬁcial effects were found on flexibility,grip strength,balance and subjective well-being(sit and reach:F=0.25,p=0.62,d=−0.40;grip strength:F=3.38,p=0.08,d=0.89;one-legged standing with eyes closed:F=1.26,p=0.27,d=0.50)in the aerobic dancing *** dancing training was effective in improving memory and balance ability in older adults during the COVID-19 pandemic in *** the future,aerobic dancing is a promising tool to encourage physical activity in older adults.

关键词： Aerobic dancing Older adults Physical fitness Cognitive function Balance

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时代的思考与关怀——赵健秀的关公形象探究

外国文学研究 2016年第1期38卷 71-76页

作者：张龙海厦门大学外文学院

一提到美国华裔作家,人们的第一反应就是他们只会在作品中再现一些具有东方主义色彩的异国情调,以此吸引读者的眼球。殊不知,华裔作家也是有着时代的关怀,有着作家自己的"天命"。本文拟从接受美学视角出发,探讨赵健秀如何塑造关公形象,... 详细信息

一提到美国华裔作家,人们的第一反应就是他们只会在作品中再现一些具有东方主义色彩的异国情调,以此吸引读者的眼球。殊不知,华裔作家也是有着时代的关怀,有着作家自己的"天命"。本文拟从接受美学视角出发,探讨赵健秀如何塑造关公形象,如何通过这一形象体现作家的个人焦虑、社会关注和时代关怀。

关键词：赵健秀关公形象时代关怀

以梦为媒重构历史——评赵建秀《唐老鸭》中的艺术创作技巧

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当代外国文学 2005年第3期26卷 66-71页

作者：张龙海厦门大学外文学院

本文主要利用弗洛伊德的“创造性作家和白日梦”的理论,分析赵建秀在《唐老鸭》中具有独创性的创作技巧,把历史和梦境结合起来,从而达到颠覆霸权话语、重写华人和华裔历史的目的。赵建秀以梦写实,通过描写唐老鸭的梦,集中展示主人公的... 详细信息

本文主要利用弗洛伊德的“创造性作家和白日梦”的理论,分析赵建秀在《唐老鸭》中具有独创性的创作技巧,把历史和梦境结合起来,从而达到颠覆霸权话语、重写华人和华裔历史的目的。赵建秀以梦写实,通过描写唐老鸭的梦,集中展示主人公的内心世界及其成长历程,借助中国文化,赋予主人公一种新的力量:冲破主流文化的静音,打破白人强加在华人、华裔身上的刻板形象,颠覆霸权话语,重构华人、华裔历史。唐老鸭面对强势话语,逐渐悟出历史的价值和意义,以自己的梦为基础,挑战主流社会,最终完成他父亲交给他的“保留历史”的天命。

关键词：创作技巧历史重构鸭唐艺术霸权话语弗洛伊德成长历程内心世界中国文化主流文化刻板形象强势话语主流社会主人公白日梦创造性独创性华裔华人重写写实

拼贴零散叙事戏仿互文性——论赵健秀《甘加丁之路》中的后现代派创作技巧

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当代外国文学 2006年第3期27卷 68-76页

作者：张龙海厦门大学外文学院

赵健秀在《甘加丁之路》中采用具有颠覆性的后现代创作手法打破了白人一手塑造的、在白人世界中家喻户晓的陈查理形象框架,抨击一些华人、华裔对陈查理的向往和追求,进一步表明年轻华裔与陈查理决裂的决心。本文通过分析小说中后现代派... 详细信息

赵健秀在《甘加丁之路》中采用具有颠覆性的后现代创作手法打破了白人一手塑造的、在白人世界中家喻户晓的陈查理形象框架,抨击一些华人、华裔对陈查理的向往和追求,进一步表明年轻华裔与陈查理决裂的决心。本文通过分析小说中后现代派技巧的运用,如拼贴、零散叙事、戏仿和互文性等深入透视文本的内涵,进而审视作者如何塑造一位刚正不阿、不屈不挠的美国华裔文化卫士尤利西斯,并以此为蓝本确立美国华裔文化的英雄传统。同时,作者借用甘加丁的故事讽刺那些追逐名利,追求“甜蜜的同化”的华裔接受主流话语的种族主义之爱。

关键词：甘加丁之路后现代派创作技巧