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Atomic engineering promoted electrooxidation kinetics of manganese-based cathode for stable aqueous zinc-ion batteries

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Nano Research 2022年第9期15卷 8603-8612页

作者： Hao Luo Lipeng Wang Penghui Ren Jiahuang Jian Xiong Liu chaojiang Niu Dongliang Chao School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China Laboratory of Advanced Materials Fudan UniversityShanghai 200433China MHT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001China

Rechargeable zinc-based batteries with near-neutral media are standing in the middle of the energy storage field by virtue of their high safety and low cost.However,it is still imperative for Mn-based cathode to improve rate capacity by facilitating ions/electron transfer and long-cycle stability by suppressing Mn dissolution.Herein,promoting electrooxidation kinetics is proposed and employed to construct advanced Mn-Zn battery.The formation of carbon-protected birnessite-MnO_(2)is promoted via inducing the electron-donating capability of the heterointerface between the N-C coating and the defective MnO.Moreover,density functional theory calculations also demonstrate that N-C protected birnessite-MnO_(2)is more hydrophobic than pure birnessite-MnO_(2),which is beneficial to prohibiting Mn dissolution and other side reactions.As a result,the elaborate design realizes effective transformation from low valence to high valence Mn for high capacity(291 mAh·g^(−1))and protective bambooslike structure for rate capacity(126 mAh·g^(−1)at 5 A·g^(−1))and cycling stability(89%capacity retention after 2,000 cycles).The assembled flexible quasi-solid-state Mn-Zn pouch batteries display application prospects for wearable and implantable electronic devices.The atomic engineering promoting electrooxidation kinetics strategy will be instructive in activating other cathode materials and maximizing their capacity.

关键词： atomic engineering Mn-based cathode electrooxidation Zn-ion battery long lifespan

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Cathodic electrolyte engineering toward durable Zn–Mn aqueous batteries

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National Science Review 2023年第12期10卷 42-44页

作者： Wanhai Zhou Hong Jin Fan Dongyuan Zhao Dongliang Chao Laboratory of Advanced Materials Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials State Key Laboratory of Molecular Engineering of Polymers College of Chemistry and Materials Fudan University School of Physical and Mathematical Sciences Nanyang Technological University

Zn–Mn aqueous batteries (ZMABs)present potential for grid-scale energy storage with the benefits of low cost,high safety and eco-friendliness [1].Since 1866 (Leclanchéwet cell), we have witnessed the prosperity of Z... 详细信息

关键词： CHEMISTRY

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Recent advances in hard carbon anodes with high initial Coulombic efficiency for sodium-ion batteries

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Nano Materials Science 2023年第2期5卷 189-201页

作者： Yanhua Wan Yao Liu Dongliang Chao Wei Li Dongyuan Zhao Department of Chemistry Laboratory of Advanced MaterialsShanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsState Key Laboratory of Molecular Engineering of PolymersFudan UniversityShanghai200433China

Initial Coulombic efficiency(ICE)has been widely adopted in battery research as a quantifiable indicator for the lifespan,energy density and rate performance of batteries.Hard carbon materials have been accepted as a promising anode family for sodium-ion batteries(SIBs)owing to their outstanding performance.However,the booming application of hard carbon anodes has been significantly slowed by the low ICE,leading to a reduced energy density at the cell level.This offers a challenge to develop high ICE hard carbon anodes to meet the applications of high-performance SIBs.Here,we discuss the definition and factors of ICE and describe several typical strategies to improve the ICE of hard carbon anodes.The strategies for boosting the ICE of such anodes are also systematically categorized into several aspects including structure design,surface engineering,electrolyte optimization and pre-sodiation.The key challenges and perspectives in the development of high ICE hard carbon anodes are also outlined.

关键词： Sodium-ion battery Hard carbon Initial Coulombic efficiency Interface engineering Anode

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Conversion electrochemistry of copper selenides for robust and energetic aqueous batteries

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Carbon Energy 2023年第2期5卷 85-93页

作者： Yichun Wang Boya Wang Jinshu Zhang Dongliang Chao Jiangfeng Ni Liang Li Jiangsu Key Laboratory of Thin Films School of Physical Science and TechnologyCenter for Energy Conversion Materials and Physics(CECMP)Soochow UniversitySuzhouJiangsuChina Laboratory of Advanced Materials Shanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsState Key Laboratory of Molecular Engineering of PolymersSchool of Chemistry and MaterialsFudan UniversityShanghaiChina

The development of highly safe and low-cost aqueous batteries is of great significance in the background of carbon neutrality.However,the practical deployment of aqueous batteries has been plagued due to their relatively low capacity and poor cycling stability.Herein,we propose unique conversion electrochemistry of copper selenides for robust and energetic aqueous charge storage.In situ X-ray diffraction and operando Raman techniques reveal a reversible transformation from CuSe to Cu_(2)Se through the intermediates of Cu_(3)Se_(2) and Cu_(1.8)Se.Such a conversion process activates the redox carrier of Cu^(2+)ion and delivers a remarkable rate capability of 285 mAh g^(-1) at 20 A g^(-1) and electrochemical durability up to 30,000 cycles.Furthermore,Cu^(2+)and H+coinsertion chemistry is proposed to facilitate the conversion process.As a proof-of-concept,a hybrid aqueous pouch cell coupling CuSe//Zn is capable of affording maximum energy and power densities of 190 Wh kg^(-1) and 1366W kg^(-1),respectively.

关键词： aqueous battery conversion electrochemistry Cu-ion battery Se-based electrode

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Activating sulfur oxidation reaction via six-electron redox mesocrystal NiS2 for sulfur-based aqueous batteries

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National Science Review 2023年第6期10卷 64-74页

作者： Zhoudong Yang Boya Wang Yongjin Chen Wanhai Zhou Hongpeng Li Ruizheng Zhao Xinran Li Tengsheng Zhang Fanxing Bu Zaiwang Zhao Wei Li Dongliang Chao Dongyuan Zhao Laboratory of Advanced Materials Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials College of Chemistry and Materials Fudan University Center for High Pressure Science and Technology Advanced Research

Sulfur-based aqueous batteries(SABs) are deemed promising candidates for safe,low-cost,and high-capacity energy storage.However,despite their high theoretical capacity,achieving high reversible value remains a great challenge due to the thermodynamic and kinetics problems of elemental sulfur.Here,the reversible six-electron redox electrochemistry is constructed by activating the sulfur oxidation reaction(SOR) process of the elaborate mesocrystal NiS2(M-NiS2).Through the unique 6e-solid-to-solid conversion mechanism,SOR efficiency can reach an unprecedented degree of ca.96.0%.The SOR efficiency is further reve aled to be closely associated with the kinetics feasibility and thermodynamic stability of the M-NiS2intermedium in the formation of elemental sulfur.Benefiting from the boosted SOR,compared with the bulk electrode, the M-NiS2electrode exhibits a high reversible capacity(1258 mAh g-1),ultrafast reaction kinetics(932 mAh g-1at 12 A g-1),and long-term cyclability(2000 cycles at 20 A g-1).As a proof of concept,a new M-NiS2‖ Zn hybrid aqueous battery exhibits an output voltage of 1.60 V and an energy density of 722.4 Wh kgcath-1,which opens a new opportunity for the development of high-energy aqueous batteries.

关键词： sulfur-based aqueous battery mesocrystal material sulfur oxidation reaction high-energy aqueous battery six-electron redox

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Nano-Sn Accommodation in Tunable-Void and Porous Graphene Bumper for High-Performance Li- and Na- ion Storage

Nano-Sn Accommodation in Tunable-Void and Porous Graphene Bu...

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中国化学会第三届中国能源材料化学研讨会

作者： Xiaoxu Liu Dong Yue Dongliang Chao Harbin Engineering University School of Chemical Engineering and Technology Harbin Institute of Technology Division of Physics and Applied Physics Nanyang Technological University

Nanoscale microstructure designing is playing an important role in improving the performance of electrode materials of an electrochemical battery.The Sn based anode is among the most high-capacity but less-stable materials and has been used mostly for anode of the Li-ion battery with unsatisfactory performance.In this work,we design a new type of 3 D porous reduced graphene and nano-Sn composite（DSPG） by simple one-step annealing of graphene oxide,polystyrene spheres and stannic chloride for both high performance Li-and Na-ion battery anodes.More importantly,the graphene oxide has been translated reduced graphene,which is coated onto the Sn surfaces as a highly efficient "bumper" to accommodate the large volume expansion of nano-Sn particles.As results,the discharge specific capacity of the DSPG anode still remains 49.9% while the charge-discharge current is increased 50 times higher with the capacity of more than 700 mAh/g after 500 cycles at 0.5 C rate.For Na storage,the integrated anodes deliver the Na storage capacity of 689.1 mAh/g at 0.1 C rate and the capacity of more than 210 mAh/g after 1000 cycles at 10 C rate.Our result on Li and Na ion battery may pave the way to next generation high power and energy density batteries.

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Redox Mediator Chemistry Regulated Aqueous Batteries:Insights into Mechanisms and Prospects

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CCS Chemistry 2022年第9期4卷 2874-2887页

作者： Tengsheng Zhang Qianru Chen Xinran Li Jiahao Liu Wanhai Zhou Boya Wang Zaiwang Zhao Wei Li Dongliang Chao Dongyuan Zhao Laboratory of Advanced Materials Shanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsSchool of Chemistry and MaterialsFudan UniversityShanghai 200433

Redox mediators(RMs),serving as intermediate electron carriers or reservoirs,play vital roles in developing new charge transfer energy storage systems with high voltage or capacity in aqueous batteries.However,the underlying mechanism and selection criteria of RMs remain unclear in aqueous batteries,which hinders the further exploitation of new RMs and aqueous battery chemistries.

关键词： redox mediators aqueous batteries mechanism selection criteria high-efficiency highenergy

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Electrochemical Hydrogen Storage Performances of the Si Added La-Mg-Ni-based A_2B_7-type Electrode Alloys for Ni/MH Battery Application

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Journal of Wuhan University of Technology(Materials Science) 2015年第1期30卷 166-174页

作者：张羊换 YANG Tai CHEN Licui XU chao REN Huiping ZHAO dongliang Key Laboratory of Integrated Exploitation of Baiyun Obo Multi-Metal Resources Inner Mongolia University of Science and Technology Department of Functional Material Research Central Iron and Steel Research Institute

The casting and annealing technologies were applied to fabricate the La0.8Mg0.2Ni3.3Co0.2Six （x = 0-0.2） electrode alloys. The effects of Si content and annealing temperature on the structure and electrochemical performances of the alloys were investigated systematically. The analyses of XRD and SEM show that all the alloys possess a multiphase structure, involving two main phases （La, Mg）2Ni7 and LaNi5 as well as a residual phase LaNi3. The addition of Si brings on an evident increase in the LaNi5 phase and a decrease in the （La, Mg）2Ni7 phase, without altering the main phase component of the alloy, which also makes the lattice constants and cell volumes of the alloy enlarged. Likewise, the annealing treatment engenders the same action on the lattice constants and cell volumes as adding Si. Simultaneously, it gives rise to the variation of the phase abundance and the coarsening of the alloy grains. The electrochemical measurements indicate that the addition of Si ameliorates the cycle stability of the as-cast and annealed alloys significantly, but impairs their discharge capacities clearly. Similarly, the annealing treatment makes a positive contribution to the cycle stability of the alloy evidently, and the discharge capacity of the alloy shows a maximum value with annealing temperature rising. Furthermore, the high rate discharge ability （HR） first augments and then declines with the rising of Si content and annealing temperature.

关键词： A2B7-type electrode alloy Si addition annealing temperature structure electrochemical performances

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Flexible smart sensing skin for“Fly-by-Feel”morphing aircraft

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Science China(Technological Sciences) 2022年第1期65卷 1-29页

作者： HUANG YongAn ZHU Chen XIONG WenNan WANG Yu JIANG YongGang QIU Lei GUO dongliang HOU chao JIANG Shan YANG ZhaoXi WANG Bo WANG Lu YIN ZhouPing State Key Laboratory of Digital Manufacturing Equipment and Technology Huazhong University of Science and TechnologyWuhan 430074China Flexible Electronics Research Center Huazhong University of Science and TechnologyWuhan 430074China State Key Laboratory of Mechanics and Control of Mechanical Structures Nanjing University of Aeronautics and AstronauticsNanjing 210016China Bionic and Micro/Nano/Bio Manufacturing Technology Research Center School of Mechanical Engineering and AutomationBeihang UniversityBeijing 100191China Department of Engineering Mechanics Northwestern Polytechnical UniversityXi’an 710072China The 38th Research Institute of China Electronics Technology Group Corporation Hefei 230088China

Flexible smart sensing skin is a key enabling technology for the future"Fly-by-Feel"control of morphing aircraft.It represents the next-generation skin of aircraft that can exhibit a more powerful sensing function than a conventional one and could be mounted on arbitrary curvilinear surfaces,especially for advanced autonomic,morphing aircraft.Recent significant technical advances in flexible electronics have overcome many historic drawbacks of conventional smart skin,e.g.,only a limited number of discrete block sensors can be integrated due to the inevitable structural damage and heavy guidelines.Herein,we review the key developments in flexible sensors technology and highlight both the state-of-the-art devices and the potential applications for the measurement of aircraft.We begin with the importance of flexible smart skin for morphing aircraft and then expand to the latest progress in various types of flexible sensors.Then we highlight flexible sensors as smart skin to measure aerodynamic parameters and monitor the structural health,and further to achieve the Fly-by-Feel control.Finally,the challenges and opportunities on flexible smart sensing skin are discussed,from the functional design to practical applications.

关键词： flexible electronics smart skin morphing aircraft flexible sensors

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视觉技术在微尺寸高精度测量中的应用

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制造技术与机床 2019年第10期 99-102页

作者：谢东亮刘超重庆工程学院软件与人工智能学院重庆400056 贵州航天电器股份有限公司贵州贵阳550009

为准确测量电磁继电器关键部件尺寸,设计一种小型高精度轭铁视觉测量系统。该系统首先采用500万像素CCD相机采集图像;然后通过二值化操作和数学形态学闭运算去除图像干扰得到轮廓清晰的单一像素图像;在此基础上利用霍夫变换法实现轭铁... 详细信息

为准确测量电磁继电器关键部件尺寸,设计一种小型高精度轭铁视觉测量系统。该系统首先采用500万像素CCD相机采集图像;然后通过二值化操作和数学形态学闭运算去除图像干扰得到轮廓清晰的单一像素图像;在此基础上利用霍夫变换法实现轭铁圆心和半径测量;此外利用最小二乘法进行直线拟合以实现轭铁尺寸高精度测量。最后,利用设计的视觉测量系统对现场产品进行测量验证。实验结果显示系统测量误差不超过0.0045mm,重复性误差不超过0.0026mm,表明系统测量精度高、稳定性强,验证了系统的有效性。

关键词：继电器机器视觉图像处理霍夫变换最小二乘法尺寸测量

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