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Molecular Engineering Design for High-Performance Aqueous Zinc-Organic Battery

Nano-Micro Letters 2023年第3期15卷 98-111页

作者： Tianjiang Sun Weijia Zhang qingshun nian Zhanliang Tao Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) College of ChemistryHaihe Laboratory of Sustainable Chemical TransformationsRenewable Energy Conversion and Storage CenterNankai UniversityTianjin 300071People’s Republic of China CAS Key Laboratory of Materials for Energy Conversion Department of Materials Science and EngineeringHefei National Laboratory for Physical Science at the MicroscaleUniversity of Science and Technology of China HefeiHefei 230026AnhuiPeople’s Republic of China

Novel small sulfur heterocyclic quinones(6a,16adihydrobenzo[b]naphtho[2′,3′:5,6][1,4]dithiino[2,3-i]thianthrene-5,7,9,14,16,18-hexaone(4S6Q)and benzo[b]naphtho[2′,3′:5,6][1,4]dithiino[2,3-i]thianthrene-5,9,14,18-tetraone(4S4Q))are developed by molecule structural design method and as cathode for aqueous zincorganic batteries.The conjugated thioether(–S–)bonds as connected units not only improve the conductivity of compounds but also inhibit their dissolution by both extendedπ-conjugated plane and constructed flexible molecular skeleton.Hence,the Zn//4S6Q and Zn//4S4Q batteries exhibit satisfactory electrochemical performance based on 3.5 mol L-1(M)Zn(ClO4)2electrolyte.For instance,the Zn//4S6Q battery obtains 240 and 208.6 mAh g^(-1)of discharge capacity at 150 mA g^(-1)and 30 A g^(-1),respectively.The excellent rate capability is ascribed to the fast reaction kinetics.This system displays a superlong life of 20,000 cycles with no capacity fading at 3 A g^(-1).Additionally,the H+-storage mechanism of the 4S6Q compound is demonstrated by ex situ analyses and density functional theory calculations.Impressively,the battery can normally work at-60℃benefiting from the anti-freezing electrolyte and maintain a high discharge capacity of 201.7 mAh g^(-1),which is 86.2%of discharge capacity at 25℃.The cutting-edge electrochemical performances of these novel compounds make them alternative electrode materials for Zn-organic batteries.

关键词： Aqueous Zn-organic battery Small sulfur heterocyclic quinones Conjugated thioether skeleton Superlong cycling life H+-involved mechanism -60℃

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Alloxazine as anode material for high-performance aqueous ammonium-ion battery

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Nano Research 2022年第3期15卷 2047-2051页

作者： Yuan Ma Tianjiang Sun qingshun nian Shibing Zheng Tao Ma Qiaoran Wang Haihui Du Zhanliang Tao Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Renewable Energy Conversion and Storage CenterCollege of ChemistryNankai UniversityTianjin 300071China 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 230026China

Aqueous ammonium-ion battery(AAIB)has attracted much attention due to its low cost,safety,and environmental friendliness,but its electrode materials have many limitations.Here,alloxazine(ALO)is introduced as the anode for the AAIB.With its pseudocapacitive effect and fast diffusion kinetics of NH4+,ALO anode shows excellent rate performance with a specific capacity of 120 mAh/g at 40 C(10 A/g).The full battery is further fabricated by ALO anode and Prussian white analogs cathode.Its specific capacity can reach 110 mAh/g and it can work up to 10,000 cycles with no obvious capacity fading at 20 C(5 A/g).In addition,the system delivers a high energy density of 122.5 Wh/kg and a power density of 5,055 W/kg.This work broadens the application prospect of the AAIB.

关键词： aqueous ammonium-ion battery alloxazine anode material pseudocapacitive effect

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Durable semi-crystalline interphase engineering to stabilize high voltage Ni-rich cathode in dilute ether electrolyte

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Journal of Energy Chemistry 2023年第4期79卷 110-117页

作者： Zhuangzhuang Cui Shunqiang Chen qingshun nian Yecheng Li Yawei Chen Bing-Qing Xiong Zihong Wang Zixu He Shuhong Jiao Xiaodi Ren School of Chemistry and Materials Science University of Science and Technology of ChinaHefei 230026AnhuiChina

Ethers are promising electrolyte solvents for secondary Li metal batteries because of their excellent reduction stability.However,their oxidation stability has been mostly relying on the high concentration approach,and limited progress has been made on building effective interphase to protect the cathode from the corrosion of the electrolyte.In this work,we construct a semi-crystalline interfacial layer on the surface of Li(Ni_(0.8)Co_(0.1)Mn_(0.1))O_(2)cathode that can achieve improved electrochemical stability in the highly corrosive chemical environment formed by the decomposition of ether molecules.Different from traditional brittle crystalline interphases,the optimized semi-crystalline layer with low modulus and high ionic conductivity can effectively relieve electrode strain and maintain the integrity of the interface layer.Due to this design,the continuous oxidation decomposition of ether-based electrolytes could be significantly suppressed and the battery shows outstanding cycling stability(84%capacity retention after 300 cycles).This article provides a solution to address the oxidation instability issue of ether-based electrolytes.

关键词： Cathode/electrolyte interphase Semi-crystalline Ether electrolyte High-voltage cathode Li-metal batteries

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A phenazine anode for high-performance aqueous rechargeable batteries in a wide temperature range

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Nano Research 2020年第3期13卷 676-683页

作者： Tianjiang Sun Chang Liu Jiayue Wang qingshun nian Yazhi Feng Yan Zhang Zhanliang Tao Jun Chen Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) College of ChemistryNankai UniversityTianjin300071China State Key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical Physics(DICP)Chinese Academy of SciencesDalian116023China Institute of Molecular Sciences and Engineering Shandong UniversityQingdaoBinhai Road 72Qingdao266237China

Aqueous rechargeable batteries are a possible strategy for large-scale energy storage systems.However,limited choices of anode materials restrict their further application.Here we report phenazine(PNZ)as stable anode materials in different alkali-ion(Li+,Na+,K+)electrolyte.A novel full cell is assembled by phenazine anode,Na0.44MnO2 cathode and 10 M NaOH electrolyte to further explore the electrochemical performance of phenazine anode.This battery is able to achieve high capacity(176.7 mAh·g^−1 at 4 C(1.2·Ag^−1)),ultralong cycling life(capacity retention of 80%after 13,000 cycles at 4 C),and excellent rate capacity(92 mAh·g^−1 at 100 C(30 A·g^−1)).The reaction mechanism of PNZ during charge—discharge process is demonstrated by in situ Raman spectroscopy,in situ Fourier transform infrared(FTIR)spectroscopy,X-ray photoelectron spectroscopy(XPS)and density functional theory(DFT)calculations.Furthermore,the system is able to successfully operate at wide temperature range from−20 to 70°C and achieves remarkable electrochemical performance.

关键词： aqueous rechargeable batteries phenazine Na0.44MnO2 alkali-ion electrolyte wide temperature

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afety-reinforced rechargeable Li-CO2 battery based on a composite olid state electrolyte

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Nano Research 2019年第10期12卷 2543-2548页

作者： lui Wang Xuejing Zhang Yichao Cai qingshun nian Zhanliang Tao Jun Chen Key Laboratory of Advanced Energy Materiah Chemistry(Ministry of Education) College of ChemistryNankai UniversityTianjin 300071China

The rechargeable Li-CO2 battery has been receiving significant attention owing to its merits of high energy density and the efficient utilization of CO2.However,the widely application is plagued by severe security risks,such as leakage,flammability and lithium dendrites growth due to the use of liquid organic electrolytes.Here,a composite solid state electrolyte consisting of polyethylene oxide(PEO)and 20 wt.%Li7La3Zr1.4Tao.6O12(LLZTO)was prepared and first introduced into L1-CO2 battery to solve the problems.The composite solid state electrolyte exhibited high ionic conductivity(1.03 x 10'3 S cm-1 at 70℃),wide electrochemical window(5 V vs.Li+/Li),good mechanical properties and excellent flexibility.Ultimately,the Li symmetric cell with PEO/LLZTO composite solid state electrolyte can operate 1,500 h at a current density of 0.1 mA·cm-2.The assembled all-solid-state Li-CO2 battery behaved a long cycle life of 70 cycles ata current density of 100 mA·g-1 with fixed capacity of 1,000 mAh·g^-1.Our work provides new perspective to develop rechargeable all-solid-state L1-CO2 batteries.

关键词： U-CO2 batteries solid state electrolyte composite safety

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姚家平高拱坝水垫塘的研究与选择

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水电与新能源 2024年第3期38卷 15-18页

作者：汤升才倪双双保庆顺年夫喜杨仕志湖北省水利水电规划勘测设计院有限公司湖北武汉430060

高拱坝泄洪消能设施的选择与布置设计是高拱坝设计成败的关键。姚家平水利枢纽属于典型的高山峡谷地区高拱坝项目,其所在位置特殊的地形地质条件给该高拱坝的消能设施布置与设计造成了一定的难度。通过类似工程的类比分析,并结合相关的... 详细信息

高拱坝泄洪消能设施的选择与布置设计是高拱坝设计成败的关键。姚家平水利枢纽属于典型的高山峡谷地区高拱坝项目,其所在位置特殊的地形地质条件给该高拱坝的消能设施布置与设计造成了一定的难度。通过类似工程的类比分析,并结合相关的模型试验科研,得出了符合本工程特点的泄洪消能设施布置方案,明确了水垫塘的长度、厚度和与之对应的二道坝高度,可供类似工程设计参考。

关键词：高坝泄洪水垫塘消能二道坝

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钙钒青铜/碳纳米管复合材料的制备及电化学性能

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高等学校化学学报 2019年第12期40卷 2526-2533页

作者：刘建杜海会孙田将年庆舜李海霞陶占良南开大学化学学院先进能源材料化学教育部重点实验室

采用水热法制备了具有二维层状结构的钙钒青铜(CaxV2O5·n H2O,CVO)水系锌离子电池钒基正极材料,并通过调控前驱体溶液中碳纳米管的含量,得到3种钙钒青铜/碳纳米管复合材料(CVO@CNTs).利用X射线衍射、热重分析、扫描电子显微镜和透射电... 详细信息

采用水热法制备了具有二维层状结构的钙钒青铜(CaxV2O5·n H2O,CVO)水系锌离子电池钒基正极材料,并通过调控前驱体溶液中碳纳米管的含量,得到3种钙钒青铜/碳纳米管复合材料(CVO@CNTs).利用X射线衍射、热重分析、扫描电子显微镜和透射电子显微镜等对材料进行了表征.结果表明,所制备的CVO呈纳米带形貌,长约十几微米,宽约几百纳米,选区电子衍射测试表明所得材料为单晶结构.循环伏安测试结果表明,CVO和CVO@CNTs均具有多个氧化还原峰,储锌机制包括赝电容行为和电池行为.在放电倍率1C (1C=300 m A/g)测试条件下,CVO纳米带比容量稳定在210. 1 m A·h/g;与CNTs复合后,CVO@CNTs复合材料的电荷转移阻抗降低,在相同测试条件下表现出更高的比容量和优异的倍率性能.其中,CVO@CNTs-40表现出最高的比容量,在1C倍率测试条件下的比容量可达274. 3 m A·h/g,即使在20C的测试条件下放电比容量仍可达85. 2 m A·h/g,且循环1000次后容量保持率能达到92%.

关键词：水系锌离子电池正极材料钙钒青铜碳纳米管水热反应

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