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Oxygen vacancy stabilized Bi_(2)O_(2)CO_(3)nanosheet for CO_(2)electroreduction at low overpotential enables energy efficient CO-production of formate

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InfoMat 2023年第3期5卷 21-32页

作者： Yangyang zhang Yanxu Chen Rong Liu Xiaowen Wang Huanhuan Liu Yin Zhu Qizhu Qian Yafei Feng Mingyu Cheng genqiang zhang Hefei National Research Center for Physical Sciences at the Microscale CAS Key Laboratory of Materials for Energy ConversionDepartment of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefeiAnhuithe People's Republic of China School of Materials Science and Engineering Hebei University of TechnologyTianjinthe People's Republic of China

Bismuth-based electrocatalysts are promising candidates for electrochemical CO_(2)reduction to formate attributing to the accelerated formation of*OCHO intermediate,while the high-energy consumption remains a major challenge for ***,we present the ultrathin Bi_(2)O_(2)CO_(3)nanosheets with abundant oxygen vacancy(Vo-BOC-NS)reconstructed from S,N-co-doped bismuth oxides that can act as durable electrocatalyst for CO_(2)-to-formate conversion with faradic efficiency(FEformate)of>95%,partial current density of 286 mA cm^(-2) with energy efficiency of 73.8%at-0.62 V(***)and low overpotential of 200 mV in a flow *** theoretical calculations decipher that the oxygen vacancy can optimize*OCOH adsorption/desorption for the accelerated conversion *** pair-electrosynthesis tactic of formate co-production can enable a superior FE_(formate) of>90%at wide cell voltage of 2–3.3 V and total yield rate of 3742μmol cm^(-2)h^(-1)at 3.3 V,suggesting great potential for future industrialization.

关键词： Bi_(2)O_(2)CO_(3) CO_(2)reduction electrocatalysis oxygen vacancy pair-electrosynthesis

Dual-strategy modification on P2-Na_(0.67)Ni_(0.33)Mn_(0.67)O_(2)realizes stable high-voltage cathode and high energy density full cell for sodium-ion batteries

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SusMat 2023年第1期3卷 58-71页

作者： Guanglin Wan Bo Peng Liping Zhao Feng Wang Lai Yu Rong Liu genqiang zhang Hefei National Research Center for Physical Sciences at the Microscale CAS Key Laboratory of Materials for Energy ConversionDepartment of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefeiAnhuiP.R.China Department of Chemistry University of Science and Technology of ChinaHefeiAnhuiP.R.China

P2-type Na_(0.67)Ni_(0.33)Mn_(0.67)O_(2)is considered as a potential cathode material for sodium-ion batteries due to the merits of high voltage,low cost,and air ***,the unsatisfied cycling stability and rate performance caused by the destructive phase transition and side reactions hinder its practical ***,we present a feasible dual strategy of Mg^(2+)doping integrated with ZrO_(2)surface modification for P2-Na_(0.67)Ni_(0.33)Mn_(0.67)O_(2),which can well address the issues of phase transition and side reactions benefitting from the enhanced structural and interfacial ***,it exhibits a decent cycling stability with a capacity retention of 81.5%at 1 C and promising rate performance with a discharge capacity of 76.6 mA h g^(−1)at 5 *** in situ X-ray diffraction measurement confirms that the damaged P2-O2 phase transition is suppressed with better reversibility in high-voltage region,whereas the side reactions are inhibited due to the protective ZrO_(2)***,the full cell achieves an outstanding operating voltage of 3.57 V and a fabulous energy density of 238.91 W h kg^(−1)at 36.73 W kg^(−1),demonstrating great *** work is expected to provide a new insight for designing stable high-voltage cathode materials and high energy density full cells for sodium ion batteries.

关键词： cathode full cell high voltage layered oxide sodium-ion battery

Deciphering pitting behavior of lithium metal anodes in lithium sulfur batteries

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Journal of Energy Chemistry 2020年第10期29卷 257-261页

作者： Fanyang Huang Shuai Wang Yulin Jie Evan Hansen Shiyang Wang Zhanwu Lei Jian Liu Ruiguo Cao genqiang zhang Shuhong Jiao Hefei National Laboratory for Physical Science at the Microscale CAS Key Laboratory of Materials for Energy ConversionDepartment of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026AnhuiChina School of Engineering Faculty of Applied ScienceUniversity of British ColumbiaKelownaBCV1V1V7Canada

Unambiguous understanding in lithium anode failure mechanism calls for a comprehensive methodology to investigate the coupled morphological,electrochemical and mechanical behaviors during the stripping *** this work,a mechanistic investigation of the pitting behavior of lithium metal in an electrolyte containing lithium polysulfides in lithium sulfur batteries was *** is found that lithium polysulfides could aggravate the nonuniform stripping of lithium electrodes.

关键词： Lithium anode Pitting behavior Failure mechanism Lithium sulfur batteries

Magic hybrid structure as multifunctional electrocatalyst surpassing benchmark Pt/C enables practical hydrazine fuel cell integrated with energy-saving H_(2)production

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eScience 2022年第4期2卷 416-427页

作者： Ziyun Li Wentao Wang Qizhu Qian Yin Zhu Yafei Feng Yangyang zhang Huaikun zhang Mingyu Cheng genqiang zhang Hefei National Research Center for Physical Sciences at the Microscale CAS Key Laboratory of Materials for Energy ConversionDepartment of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefeiAnhui230026China Guizhou Provincial Key Laboratory of Computational Nano-Material Science Guizhou Education UniversityGuiyangGuizhou550018China

A hybrid catalyst structure can provide abundant active sites and tailored electronic properties,but the major challenge lies in achieving delicate control over its composition and architecture to improve the catalytic activity toward different electrochemical reactions ***,we present the rational design of a magic hybrid structure with low Pt loading(5.90 wt%),composed of CoPt_(3)and CoPt nanoparticles supported on N-doped carbon(CoPt_(3)/CoPt⊂PLNC).Importantly,it shows superior multifunctional catalytic activity in alkaline conditions,requiring a low overpotential of 341 and 20 mV to achieve 10 mA cm^(−2)for the hydrazine oxidation reaction(HzOR)/hydrogen evolution reaction(HER),respectively,and it delivers a half-wave potential of 0.847 V for the oxygen reduction reaction(ORR).Theoretical calculations reveal that the metal-carbon hybrid modulates kinetic behavior and induces electron redistribution,achieving the energetic requirements for multiple *** demonstrate sustainable H_(2)production utilizing solely the CoPt_(3)/CoPt⊂PLNC catalyst,without external electric power input,suggesting its inspiring practical utility.

关键词： Electrocatalysis Hybrid structure Fuel cell Hydrazine oxidation H_(2)production

Constructing heterointerface of Bi/Bi_(2)S_(3)with built-in electric field realizes superior sodium-ion storage capability

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eScience 2023年第4期3卷 99-109页

作者： Rong Liu Lai Yu Xiaoyue He Huanhuan Liu Xinyi Ma Zongzhi Tao Guanglin Wan Nazir Ahmad Bo Peng Liang Shi genqiang zhang Hefei National Research Center for Physical Sciences at the Microscale CAS Key Laboratory of Materials for Energy ConversionDepartment of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefeiAnhui230026China School of Materials Science and Engineering Anhui University of TechnologyMaanshanAnhui243002China

Bismuth sulfide(Bi_(2)S_(3))is a dominant anode material for sodium-ion batteries due to its high theoretical ***,extreme volume fluctuations as well as low electrical conductivity and reaction kinetics still limit its practical ***,we construct an abundant heterointerface of Bi/Bi_(2)S_(3)by engineering the structure of Bi nanoparticles embedded on Bi_(2)S_(3)nanorods(denoted as Bi-Bi_(2)S_(3)NRs)to effectively solve the above-mentioned *** and systematic characterization results reveal that the constructed hetero-interface of Bi/Bi_(2)S_(3)has a built-in electric field,significantly boosts the electrical conductivity,enhances the Na^(+)diffusion kinetics,and buffers the volume *** this modification,it can deliver long cycling life,with an ultra-high capacity of 500 mAh g^(-1)over 500 cycles at 1 A g^(-1),and outstanding rate capability,with a capacity of 456 mAh g^(-1)even at 15 A g^(-1).Moreover,a full cell can achieve a high energy density of 180 Wh kg^(-1)at a power density of 40 W kg^(-1).Our research opens up a fresh path for improving the dynamics and structural stability of metal sulfide-based electrode materials for SIBs.

关键词： Sodium-ion battery Anode materials Heterointerface Built-in electric field Energy band structure

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“御宅族”的三重身份

中国青年研究 2009年第3期 92-95页

作者：张根强陕西省西安市西安理工大学人文学院社科系

"御宅族"指称对动漫、游戏产品及文化极度痴迷的青少年族群。御宅族兼具三重身份:虚拟信息的收集机器、"永不满足"的消费族群和文化价值的传播载体。行走在虚幻与现实之间的御宅族群身上折射出了现代技术文明发展与传统社群组织及其个... 详细信息

"御宅族"指称对动漫、游戏产品及文化极度痴迷的青少年族群。御宅族兼具三重身份:虚拟信息的收集机器、"永不满足"的消费族群和文化价值的传播载体。行走在虚幻与现实之间的御宅族群身上折射出了现代技术文明发展与传统社群组织及其个体身份表达方式之间的深刻矛盾。

关键词：御宅族 ACG 三重身份

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多价离子电池的研究现状与展望

硅酸盐学报 2021年第7期49卷 1278-1295页

作者：高靖宇王功瑞李杰章根强中国科学技术大学化学与材料科学学院合肥230026

近些年来,因金属镁、铝、钙、锌等储量丰富,成本低廉和高安全性,基于多价阳离子(如Al^(3+),Mg^(2+),Ca^(2+),Zn^(2+)等)的可充电电池受到了广泛关注。本工作总结了国内外研究团队在多价离子电池研究方面取得的成果和突破性进展,发现目... 详细信息

近些年来,因金属镁、铝、钙、锌等储量丰富,成本低廉和高安全性,基于多价阳离子(如Al^(3+),Mg^(2+),Ca^(2+),Zn^(2+)等)的可充电电池受到了广泛关注。本工作总结了国内外研究团队在多价离子电池研究方面取得的成果和突破性进展,发现目前多价离子电池研究体系中关于铝离子和镁离子电池的相关研究工作较多,主要侧重于正负极材料的开发以及电解液组分的优化。然而,在多价离子电池体系的快速发展中,我们发现仍然存在一些棘手的问题有待解决,比如正极材料的结构不稳定,较慢的离子迁移速率,负极的钝化及枝晶问题,以及电解液的腐蚀性等。最后就目前多价离子电池体系未来的发展方向进行了展望,即在以后的研究中寻找高能量密度的多价离子电池模型是主要的研究方向,其中可以在正负极材料的结构修饰和性能改进、电解液优化及多组分的匹配等方面进行探究和尝试,以此来获得高性能的多价离子电池。

关键词：多价离子电池正极材料负极材料电解液

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锂金属负极的可逆性与沉积形貌的关联

物理化学学报 2021年第1期37卷 153-160页

作者：黄凡洋揭育林李新鹏陈亚威曹瑞国章根强焦淑红中国科学技术大学中国科学院能量转换材料重点实验室材料科学与工程系合肥微尺度物质科学国家研究中心合肥230026

高能量密度二次电池的商业化将会推动便携式电子设备和电动车的飞速发展。锂金属电池因具有较高的理论能量密度而受到研究者的广泛关注。然而,锂金属负极较低的库仑效率(CE)和枝晶生长等问题,严重制约了锂金属电池的发展。库仑效率是衡... 详细信息

高能量密度二次电池的商业化将会推动便携式电子设备和电动车的飞速发展。锂金属电池因具有较高的理论能量密度而受到研究者的广泛关注。然而,锂金属负极较低的库仑效率(CE)和枝晶生长等问题,严重制约了锂金属电池的发展。库仑效率是衡量电池体系可逆性的关键参数之一,锂金属负极的库仑效率在不同电解液中存在较大的差异,本文以四种常见的电解液为例,包括1 mol·L^(-1)六氟磷酸锂-碳酸乙烯酯/碳酸二甲酯电解液,1 mol·L^(-1)六氟磷酸锂-碳酸乙烯酯/碳酸二甲酯+5%(w)氟代碳酸乙烯酯电解液,1 mol·L^(-1)双(三氟甲烷磺酰)亚胺锂-乙二醇二甲醚/1,3二氧戊环+2%(w)硝酸锂电解液,以及4 mol·L^(-1)双氟磺酰亚胺锂-乙二醇二甲醚电解液,利用原子力显微镜研究了不同电解液体系中锂金属的生长行为,探讨了锂金属沉积形貌与其库仑效率之间的联系,为发展高效的锂金属负极提供了参考依据。

关键词：锂金属负极库仑效率沉积形貌电解液原子力显微镜

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泡沫酸稳定性研究

西南石油学院学报 1987年第3期 24-30页

作者：陈根强张熙袁明东西南石油学院应用化学系

本文研究了起泡剂的复配、高分子化合物、醇类、酸浓度和温度对泡沫酸起泡能力及稳定性的影响。研究表明:起泡剂的复配有利于泡沫酸的起泡与稳定,适当的醇类和高分子化合物能提高泡沫酸的稳定性。

关键词：泡沫酸起泡能力起泡剂发泡剂