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Revealing dual capacitive mechanism of carbon cathode toward ultrafast quasi-solid-state lithium ion capacitors

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Journal of Energy Chemistry 2021年第9期30卷 209-221页

作者： Kangyu Zou Peng Cai Xinglan Deng Baowei Wang Cheng Liu Jiayang Li Hongshuai Hou Guoqiang Zou Xiaobo Ji College of Chemistry and Chemical Engineering Central South UniversityChangsha 410083China College of Metallurgy and Chemical Engineering Jiangxi University of Science and TechnologyGanzhou 341000China

High-performance lithium ion capacitors(LICs) have been seriously hindered by the very low capacity and unclear capacitive mechanism of carbon ***,after the combination of experimental results and theoretical calculations,it is found that the critical pore size of 0.8 nm for PF_6~-ion adsorption decreases strong interactive repulsion of electrons and largely reduces adsorption energy barrier,which greatly improves the charge accommodation capacity in electrical double-layer *** importantly,the chemical-bond evolution process of C=O group has been firstly revealed by X-ray photoelectron spectroscopy(XPS),indicating that the introduction of C=O group can provide abundant redox active sites for PF_6~-ion adsorption accompanied with enhanced pseudocapacitive *** to the synergistic effect of dual capacitive mechanism,porous carbon sheet(PCS) cathode shows a reversible specific capacity of 53.6 mAh g^(-1) even at a high current density of 50 A g^(-1).Significantly,the quasisolid-state LIC manifests state-of-the-art electrochemical performances with an integrated maximum energy density of 163 Wh kg^(-1) and an outstanding power density of 15,000 W kg^(-1).This elaborate work promotes better fundamental understanding about capacitive mechanism of PF_6~-ion and offers a rational dual-capacitive strategy for the design of advanced carbon cathodes.

关键词： Capacitive mechanism Carbon cathode Carbonyl group quasi-solid-state Lithium ion capacitors

Correlative Mn-Co catalyst excels Pt in oxygen reduction reaction of quasi-solid-state zinc-air batteries

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Nano Research 2024年第5期17卷 4118-4124页

作者： Tingting Wang Jincheng Huang Wei Sang Cai Zhou Bohan Zhang Wei Zhu Kang Du Zongkui Kou Shengxiang Wang School of Mathematical and Physical Sciences Wuhan Textile UniversityWuhan 430200China state Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

Zn-air batteries(ZABs)as a class of promising energy storage setups are generally powered by efficient and robust catalysts at the oxygen-involving *** the existing non-noble catalysts have outperformed noble Pt benchmark in the alkaline liquid-state ZABs,to the best of our knowledge few have excelled Pt in quasi-solid-state(QSS)***,we found that an integrated Mn-Co cathode derived from the bimetallic Mn/Co metal organic frameworks generates a 1.4-fold greater power density in the QSS ZABs than a Pt cathode while its power density in liquid-state ZABs is only 0.8-fold of the ***,such Mn-Co catalyst delivers high-rate oxygen reduction reaction(ORR)capability with half-wave potential of 0.84 *** in-depth characterizations and analyses have demonstrated that the Co and Mn species show the specific affinity towards H_(2)O and O_(2),respectively,synergizing the ORR process in the water-deficient environment of QSS *** work has enlightened the rational design of non-noble metal catalysts to improve the power density of QSS ZABs.

关键词： non-noble metal catalysts zinc-air battery quasi-solid-state synergistic effect

High Areal Capacity and Long Cycle Life Flexible Mild quasi-solid-state Ag-Zn Battery with Dendrite-Free Anode

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Energy & Environmental Materials 2024年第1期7卷 34-41页

作者： Yanzhe Zhu Renbo Zhu Fandi Chen Shuo Zhang Yu-Chieh Kuo Peiyuan Guan Mengyao Li Yunjian Liu Zhaojun Han Tao Wan Dawei Wang Caiyun Wang Dewei Chu School of Materials Science and Engineering The University of New South WalesSydneyNew South Wales 2052Australia School of Material science and Engineering Jiangsu UniversityZhenjiang 212013China School of Chemical Engineering The University of New South WalesSydneyNew South Wales 2052Australia Intelligent Polymer Research Institute AIIMInnovation CampusUniversity of WollongongNorth Wollongong New South Wales 2522Australia

Silver-zinc(Ag-Zn)batteries are a promising battery system for flexible electronics owing to their high safety,high energy density,and stable output ***,poor cycling performance,low areal capacity,and inferior flexibility limit the practical application of Ag-Zn ***,we develop a flexible quasi-solid-state Ag-Zn battery system with superior performance by using mild electrolyte and binder-free *** foam current collector is introduced to impede the growth of Zn dendrite,and the structure of Ag cathode is engineered by electrodeposition and chloridization process to improve the areal *** novel battery demonstrates a remarkable cycle retention of 90%for 200 cycles at 3 mA cm^(-2).More importantly,this binder-free battery can afford a high capacity of 3.5 mAh cm^(-2)at 3 mA cm^(-2),an outstanding power density of 2.42 mW cm^(-2),and a maximum energy density of 3.4 mWh cm^(-2).An energy management circuit is adopted to boost the output voltage of a single battery,which can power electronic ink display and Bluetooth temperature and humidity *** developed battery can even operate under the extreme conditions,such as being bent and sealed in solid *** work offers a path for designing electrodes and electrolyte toward high-performance flexible Ag-Zn batteries.

关键词： binder-free electrodes dendrite-free flexible Ag-Zn battery mild electrolyte quasi-solid-state

Electrode structure enabling dendrite inhibition for high cycle stability quasi-solid-state lithium metal batteries

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Journal of Energy Chemistry 2023年第4期79卷 232-241页

作者： Kaiming Wang Ao Yu Zhiyi Zhou Fei Shen Manni Li Liang Zhang Weichang Guo Yifei Chen Le Shi Xiaogang Han state Key Laboratory of Electrical Insulation and Power Equipment School of Electrical EngineeringXi’an Jiaotong UniversityXi’an 710049ShaanxiChina School of Future Technology Xi’an Jiaotong UniversityXi’an 710049ShaanxiChina National Innovation Platform(Center)for Industry-Education Integration of Energy Storage Technology Xi’an 710049ShaanxiChina

Lithium(Li)metal batteries(LMBs)are widely regarded as the ultimate choice for the next generation of high-energy–density ***,the uncontrollable growth of Li dendrites formed by inhomogeneous deposition seriously hinders its *** many studies have achieved significant results in inhibiting the formation of Li dendrites,it is still impossible to eradicate them ***,regulating the deposition behavior,such as the growth direction of unevenly deposited Li,is preferable to unilaterally suppressing them in some *** we report a structured anode that can confine the deposited Li within holes and tune it to become vertical-up/horizontal-centripetal mixed growth mode by optimizing the electric field/Li^(+)concentration *** Li^(+) adsorbed by the poly(amic acid)(PAA)insulating layer coated on the anode surface can form the Li^(+)concentration gradient pointing to the center of the *** with the special electric field formed by the hole structure,it is favorable for the Li^(+)to move into the vertically arrayed holes and simultaneously deposit on the bottom and ***,both in-situ and ex-situ observations confirm that the growth mode is changed and the Li deposition morphology is denser,which can greatly delay capacity fading and prolong cycle life in both liquid and quasi-solid-state *** the results show that the novel anode provides a new perspective for deep research into solid-state LMBs.

关键词： Lithium metal batteries Structured anode Deposition behavior quasi-solid-state

Flexible quasi-solid-state sodium-ion full battery with ultralong cycle life,high energy density and high-rate capability

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Nano Research 2022年第2期15卷 925-932页

作者： Chen-De Zhao Jin-Zhi Guo Zhen-Yi Gu Xiao-Tong Wang Xin-Xin Zhao Wen-Hao Li Hai-Yue Yu Xing-Long Wu Faculty of Chemistry Northeast Normal UniversityJilin 130024China MOE Key Laboratory for UV Light-Emitting Materials and Technology Northeast Normal UniversityJilin 130024China

Flexible power sources featuring high-performance,prominent flexibility and raised safety have received mounting attention in the area of wearable electronic ***,many great challenges remain to be overcome,notably the design and fabrication of flexible electrodes with excellent electrochemical performance and matching them with safe and reliable ***,a facile approach for preparing flexible electrodes,which employs carbon cloth derived from commercial cotton cloth as the substrate of cathode and a flexible anode,is proposed and *** promising cathode(NVPOF@FCC)with high conductivity and outstanding flexibility is prepared by efficiently coating Na_(3)V_(2)(PO_(4))_(2)O_(2)F(NVPOF)on flexible carbon cloth(FCC),which exhibits remarkable electrochemical performance and the significantly improved reaction *** importantly,a novel flexible quasi-solid-state sodium-ion full battery(QSFB)is feasibly assembled by sandwiching a P(VDF-HFP)-NaClO_(4) gel-polymer electrolyte film between the advanced NVPOF@FCC cathode and FCC *** the QSFBs are further evaluated in flexible pouch cells,which not only demonstrates excellent energy-storage performance in aspect of great cycling stability and high-rate capability,but also impressive flexibility and *** work offers a feasible and effective strategy for the design of flexible electrodes,paving the way for the progression of practical and sustainable flexible batteries.

关键词： flexible sodium-ion battery gel-polymer electrolyte quasi-solid-state carbon cloth Na_(3)V_(2)(PO_(4))_(2)O_(2)F

Pre-potassiated hydrated vanadium oxide as cathode for quasi-solid-state zinc-ion battery

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Chinese Chemical Letters 2022年第5期33卷 2663-2668页

作者： Qifei Li Xiangxiang Ye Hong Yu Chengfeng Du Wenping Sun Weiling Liu Hongge Pan Xianhong Rui School of Materials and Energy Guangdong University of TechnologyGuangzhou 510006China Center of Advanced Lubrication and Seal Materials Northwestern Polytechnical UniversityXi’an 710072China Institute of Science and Technology for New Energy Xi’an Technological UniversityXi’an 710021China School of Materials Science and Engineering State Key Laboratory of Silicon MaterialsZhejiang UniversityHangzhou 310027China School of Materials Science and Engineering Nanyang Technological UniversitySingapore 639798Singapore

Zinc-ion batteries(ZIBs),in particular quasi-solid-state ZIBs,occupy a crucial position in the field of energy storage devices owing to the superiorities of abundant zinc reserve,low cost,high safety and high theoretical capacity of zinc ***,as divalent Zn^(2+)ions experience strong electrostatic interactions when intercalating into the cathode materials,which poses challenges to the structural stability and higher demand in Zn^(2+)ions diffusion kinetics of the cathode ***,a microwave-assisted hydrothermal method is adopted to prepare pre-potassiated hydrated vanadium pentoxide(K_(0.52)V_(2)O_(5)·0.29H_(2)O,abbreviated as KHVO)cathode material,in which the potassium ions preinserted into the interlayers can act as“pillars”to stabilize the lamellar structure,and crystal water can act as“lubricant”to improve the diffusion efficiency of Zn^(2+)***,the KHVO displays high electrochemical properties with high capacity(∼300 mAh/g),superior rate capability(69 mAh/g at 5 A/g)and ultralong cycling performance(>1500 cycles at 2 A/g)in quasi-solid-state *** superior Zn storage properties result from the large diffusion coefficient and highly stable and reversible Zn^(2+)(de)intercalation reaction of KHVO.

关键词： quasi-solid-state Zinc-ion batteries Hydrated vanadium oxide Pre-potassiated Electrochemical kinetics

quasi-solid-state solar rechargeable capacitors based on in-situ Janus modified electrode for solar energy multiplication effect

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Science China Materials 2020年第9期63卷 1693-1702页

作者： Peng Chen Tian-Tian Li Guo-Ran Li Xue-Ping Gao Institute of New Energy Material Chemistry School of Materials Science and EngineeringNankai UniversityTianjin 300350China

Solar energy is one of the most appealing clean energies to replace fossil ***,the low power output is the bottleneck that hinders the effective usage of solar ***,we propose quasi-solid-state solar rechargeable capacitors for solar energy multiplication effect and effective application based on Janus modified *** power output of solar energy could be magnified by an integrated unit,which consists of the hydrogel electrolyte,asymmetrically lyophilic/lyophobic Janus joint electrode,and efficient perovskite solar *** from the unique Janus structure,the quasi-solid-state device is capable of achieving outstanding solar energy conversion,storage and utilization with large power output of 500 mW cm^-2,which is about 50 times higher than that of conventional solar cells.

关键词： solar energy power multiplier solar rechargeable capacitors perovskite quasi-solid-state

Effect of the self-assembled gel network formed from a low molecular mass organogelator on the electron kinetics in quasi-solid-state dye-sensitized solar cells

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Science China Materials 2016年第10期59卷 787-796页

作者：王露霍志鹏桃李朱俊陈双宏潘旭戴松元 Key Laboratory of Novel Thin Film Solar Cells Institute of Applied TechnologyHefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China University of Science and Technology of China Hefei 230026China Hubei Collaborative Innovation Center for Advanced Organic ChemicalMaterials Faculty of Physics and Electronic ScienceHubei UniversityWuhan 430062China Beijing Key Laboratory of Novel Thin Film Solar Cells School of Renewable EnergyNorth China Electric Power UniversityBeijing 102206China

A low molecular mass organogelator(LMOG),N,N’-1,5-pentanediylbis-dodecanamide, was applied to quasi-solid-state dye-sensitized solar cells(QS-DSSCs). The crosslinked gel network was self-assemblied by the LOMG in the liquid electrolyte, and the in situ assembly process of gelator can be obtained by the polarized optical microscopy(POM). On one hand, the network hinders the diffusion of redox species and accelerates the electron recombination at the interface of the TiO_2 photoanode/electrolyte. On the other hand, Li+ can interact with the amide carbonyl groups of the gelators and the adsorption of Li+ onto the TiO_2 surface decreases, leading to a negative shift of the TiO_2 conduction band edge, accelerated electron transport and decreased electron injection efficiency(η_(inj)) of QS-DSSC. As a result, the incidental photon-to-electron conversion efficiency(IPCE),the short circuit photocurrent density(J_(sc)) and the open circuit voltage(V_(oc)) of the QS-DSSC are decreased compared with those of the liquid electrolyte based DSSC(L-DSSC),which indicates that the electron recombination plays a great role in the photovoltaic performances of DSSC. Remarkably,the QS-DSSC exhibits excellent thermal and light-soaking stabilities during accelerated aging tests for 1000 h, which is attributed to a great intrinsic stability of the gel electrolyte with a high gel to solution transition temperature(T_(gel)=108°C).

关键词： dye-sensitized solar cells quasi-solid-state low molecular mass organogelator electron kinetics stability

The Feasible Design of quasi-solid-state Aqueous Tin-Iodine Batteries

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Renewables 2023年第4期1卷 474-483页

作者： Qiang Guo Ya’nan Yang Liru Wang Nan Chen Liangti Qu Key Laboratory of Cluster Science Ministry of Education of ChinaKey Laboratory of Photoelectronic/Electrophotonic Conversion MaterialsSchool of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 100081 Yangtze Delta Region Academy of Beijing Institute of Technology Jiaxing 314019 Key Laboratory of Organic Optoelectronics&Molecular Engineering Ministry of EducationDepartment of ChemistryTsinghua UniversityBeijing 100084

Aqueous rechargeable batteries with high safety have been considered as the main energy source to power portable and wearable ***,we report the first construction of quasi-solid-state aqueous tin-iodine batteries by exploiting Sn foil as anode,carbon cloth as cathode,and gel *** anode reversibly converts from K_(2)Sn(OH)_(6) to metal Sn,thus eliminating the formation of metal ***,gel electrolytes alleviate anode corrosion and enhance the utilization of the ***,the asfabricated quasi-solid-state batteries manifest an areal capacity of 700μAh cm^(-2)(211 mAh g^(-1) equal to theoretical capacity)and excellent cycling stability without obvious capacity degradation after 120 cycles at 1mA cm^(-2).Remarkably,the designed batteries sealed by different package materials including plastic,glass,wood,and cardboard operated steadily,thereby enlarging the application scenario for these *** work enriches the family of aqueous rechargeable batteries and sheds light on the construction of high-performance quasi-solid-state aqueous batteries.

关键词： quasi-solid-state tin-iodine batteries gel electrolytes excellent cycling stability different package materials