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Intermetallic interphases in lithium metal and lithium ion batteries

InfoMat 2021年第10期3卷 1083-1109页

作者： Ke Sun zhangquan peng Laboratory of Advanced Spectro-electrochemistry and Li-ion Batteries Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalianChina School of Applied Physics and Materials Wuyi UniversityJiangmenChina Tianmu Lake Institute of Advanced Energy Storage Technologies Co.Ltd. LiyangChina

A robust electrode-electrolyte interface is the cornerstone for every battery system,as demonstrated in the meandering history of the development of Li-ion batteries(LIBs).In the thrust to replace the graphite anode with more energetic ones in LIBs,the effectual strategy for stabilizing the original graphite-electrolyte interface becomes obsolete and a new anode-electrolyte interface needs ***,this interface has become the Achilles'heel for those anodes,such as Li-metal anode(LMA)and Si-based anode owing to their excessive reductivity,enormous volume change,and so ***,in the last decade,impressive progress has been made on taming these extremely unstable interfaces and on the solid-state batteries(SSBs)that are reported to be less susceptible to parasitic *** of the distinguished strategies is the application of artificial Li-alloying intermetallic interphases onto the surface of LMA,via the direct introduction of foreign metals to the Li anode or indirect hetero-cations doping in the electrolyte,to regulate the Li deposition/stripping behavior,which has markedly improved the stability of the LMA-electrolyte *** parallel,the intermetallic interphases are also witnessed to profoundly enhance the anode-solid electrolyte contact and the corresponding charge transfer kinetics in various *** review will provide a panoramic overview of the application of the intermetallic interphases at the anode-electrolyte interfaces in the lithium metal batteries(LMBs),SSBs,and also derivative works in the conventional LIBs,which will focus on different concepts,methodologies,and understandings from the encircled studies.

关键词： anode-electrolyte interface intermetallic interphase Li-alloying interphase lithiophilic interphase lithium metal anode

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Dealloyed Silver Nanoparticles as Efficient Catalyst Towards Oxygen Reduction in Alkaline Solution

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Chemical Research in Chinese Universities 2016年第1期32卷 106-111页

作者： CUI Qinghua ZHANG Yelong peng zhangquan State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changehun 130022 P. R. China University of Chinese Academy of Sciences Beijing 100049 P. R. China

Silver nanoparticles（Ag NPs） were prepared by dealloying Mg-Ag alloy precursor. The obtained Ag NPs have an average ligament size of （50±10） nm. Electrocatalytic activity of Ag NPs towards oxygen reduction reaction（ORR） in 0.1 mol/L NaOH solution was assessed via cyclic voltammetry（CV）, rotating ring disk electrode（RRDE） techniques, and electrochemical impedance spectroscopy（EIS）. The electrochemical active area for the ORR was evaluated by means of the charge of the underpotential deposition（UPD） of lead（Pb） on Ag NPs. The CV results in- dicate that Ag NPs have a higher current density and more positive onset potential than the bulk Ag electrode. RRDE was employed to determine kinetic parameters for O2 reduction. Ag NPs exhibit a higher kinetic current density of 25.84 mA/cm2 and a rate constant of 5.45× 10^-2 cm/s at -0.35 V vs. Hg/HgO. The number of electrons（n） involved in ORR is close to 4. Further, EIS data show significantly low charge transfer resistances on the Ag NPs electrode. The results indicate that the prepared Ag NPs have a high activity and are promising catalyst for ORR in alkaline solution.

关键词： Silver nanoparticles Electrochemical activity Oxygen reduction reaction

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Tungsten diselenide nanoplates as advanced lithium/ sodium ion electrode materials with different storage mechanisms

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Nano Research 2017年第8期10卷 2584-2598页

作者： Wanfeng Yang Jiawei Wang Conghui Si zhangquan peng Zhonghua Zhang Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education) School of Materials Science and Engineering Shandong University Jingshi Road 17923 Jinan 250061 China State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China

Transition-metal dichalcogenides （TMDs） exhibit immense potential as lithium/ sodium-ion electrode materials owing to their sandwich-like layered structures. To optimize their lithium/sodium-storage performance, two issues should be addressed： fundamentally understanding the chemical reaction occurring in TMD electrodes and developing novel TMDs. In this study, WSe2 hexagonal nanoplates were synthesized as lithium/sodium-ion battery （LIB/SIB） electrode materials. For LIBs, the WSe2-nanoplate electrodes achieved a stable reversible capacity and a high rate capability, as well as an ultralong cycle life of up to 1,500 cycles at 1,000 mA·g^-1. Most importantly, in situ Raman spectroscopy, ex situ X-ray diffraction （XRD）, transmission electron microscopy, and electrochemical impedance spectroscopy measurements performed during the discharge-charge process clearly verified the reversible conversion mechanism, which can be summarized as follows： WSe2 ＋ 4Li^＋＋ 4e^- ←→ W ＋ 2Li2Se. The WSe2 nanoplates also exhibited excellent cycling performance and a high rate capability as SIB electrodes. Ex situ XRD and Raman spectroscopy results demonstrate that WSe2 reacted with Na^＋ more easily and thoroughly than with Li^＋ and converted to Na2Se and tungsten in the Ist sodiated state. The subsequent charging reaction can be expressed as Na2Se → Se ＋ 2Na^＋＋ 2e^-, which differs from the traditional conversion mechanism for LIBs. To our knowledge, this is the first systematic exploration of the lithium/sodium-storage performance of WSe2 and the mechanism involved.

关键词： lithium/sodium ion battery anodes WSe2 nanoplates X-ray diffraction Raman spectroscopy lithium/sodium storage mechanisms

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Li_2O_2 oxidation: the charging reaction in the aprotic Li-O_2 batteries

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Science Bulletin 2015年第14期60卷 1227-1234页

作者： Qinghua Cui Yelong Zhang Shunchao Ma zhangquan peng State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences University of Chinese Academy of Sciences

Aprotic Li-O2 battery has attracted a great deal of interest because of its high theoretical energy density that is far beyond what the best Li-ion technologies can ***, the present Li-O2 batteries suffer from the low energy efficiency that is limited mainly by the high overpotentials required to re-oxidize Li2O2, the discharge product. Over the past few years, considerable research efforts have been devoted to the understanding of the Li2O2 oxidation reactions. Here, we summarize the results obtained from the fundamental study of the Li2O2 oxidation, including its morphology, reaction route, kinetics, the initial location upon oxidation and the charge transport within Li2O2. A better mechanistic understanding of the Li2O2 oxidation reaction will provide a solid foundation for the realization of practical Li-O2 cells with a higher energy efficiency.

关键词： Aprotic Li-O2 battery Li202 oxidationMorphology Kinetics Initial location uponoxidation Charge transport

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The origin of potential rise during charging of Li-O2 batteries

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Science China Chemistry 2017年第12期60卷 1527-1532页

作者： Limin Guo Jiawei Wang Shunchao Ma Yantao Zhang Erkang Wang zhangquan peng State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangehun 130022China University of Chinese Academy of Sciences Beijing 100039China

When aprotic Li-O2 batteries recharge, the solid Li2O2 in the positive electrode is oxidized, which often exhibits a continuous or step increase in the charging potential as a function of the charging capacity, and its origin remains incompletely understood. Here, we report a model study of electro-oxidation of a Li2O2 film on an Au electrode using voltammetry coupled with in situ Raman spectroscopy. It was found that the charging reaction initializes at the positive electrodelLizO2 interface, instead of the previously presumed Li2O2 surface, and consists of two temporally and spatially separated Li2O2 oxidation processes, accounting for the potential rise during charging of Li-O2 batteries. Moreover, the electrode surface-initialized oxidation can disintegrate the Li2O2 film resulting in a loss of Li2O2 into electrolyte solution, which drastically decreases the charging efficiency and highlights the importance of using soluble electro-catalyst for the complete charging of Li-02 batteries.

关键词： aprotic Li-O2 battery reactive site oxygen evolution reaction surface enhanced Raman spectroscopy oxygen electrochemistry

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Confining Li_(2)O_(2) in tortuous pores of mesoporous cathodes to facilitate low charge overpotentials for Li-O_(2) batteries

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Journal of Energy Chemistry 2021年第4期30卷 55-61页

作者： Yin Zhou Yong Zhao Zhenjie Liu zhangquan peng Li Wang Wei Chen Department of Chemistry National University of Singapore3 Science Drive 3117543Singapore Institute for Advanced Study and Department of Physics Nanchang UniversityNanchang 330031JiangxiChina National University of Singapore(Suzhou)Research Institute Suzhou 215123JiangsuChina State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022JilinChina Department of Physics National University of Singapore2 Science Drive 3117542Singapore Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityBinhai New CityFuzhou 350207FujianChina

Achieving low charge overpotentials represents one of the most critical challenges for pursuing highperformance lithium-oxygen(Li-O_(2))***,we propose a strategy to realize low charge overpotentials by confining the growth of lithium peroxide(Li_(2)O_(2))inside mesoporous channels of cathodes(CMK-8).The CMK-8 cathode with tortuous pore structures can extend the diffusion distance of lithium superoxide(LiO_(2))in the mesoporous channels,facilitating the further reduction of LiO_(2) to lithium peroxide(Li_(2)O_(2))inside the pores and preventing them to be diffused out of the ***,Li_(2)O_(2) is trapped in the mesoporous channels of CMK-8 cathodes,ensuring a good Li_(2)O_(2)/CMK-8 contact *** CMK-8 electrode exhibits a low charge overpotential of 0.43 V and a good cycle life for 72 cycles with a fixed capacity of 500 m Ah g^(-1) at 0.1 A g^(-1).This study proposes a strategy to achieve a low charge overpotential by confining Li_(2)O_(2) growth in the mesoporous channels of cathodes.

关键词： Lithium-oxygen CMK-8 cathode Charge overpotential Lithium superoxide Cycle performance

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Progress in in-situ electrochemical nuclear magnetic resonance for battery research

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Magnetic Resonance Letters 2024年第2期4卷 13-21页

作者： Yong Jiang Mengmeng Zhao zhangquan peng Guiming Zhong Laboratory of Advanced Spectro-electrochemistry and Li-ion Batteries Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian116023China University of Chinese Academy of Sciences Beijing100049China Tianmu Lake Institute of Advanced Energy Storage Technologies Co. Ltd.Liyang213300China

A thorough understanding of the fundamental electrochemical and chemical processes in batteries is crucial to advancing energy density and power ***,the characterizations of such processes are ***-situ electrochemical nuclear magnetic resonance(EC-NMR)offers the capability to collect real-time data during battery operation,furnishing insights into the local structures and ionic dynamics of materials by monitoring changes in the chemical environment around the ***-NMR also has the advantages of being both quantitative and *** paper systematically reviews the design of EC-NMR approach,and delves into the applications and progress of EC-NMR concerning battery reaction mechanisms,failure mechanisms,and overall battery *** review culminates in a comprehensive summary of the perspective and challenges associated with EC-NMR.

关键词： In-situ NMR Reaction mechanism Failure mechanism Battery systems Ionic dynamics

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Understanding oxygen electrochemistry in aprotic Li-O_2 batteries

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Green Energy & Environment 2017年第3期2卷 186-203页

作者： Liang Wang Yantao Zhang Zhenjie Liu Limin Guo zhangquan peng State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences University of Science and Technology of China University of Chinese Academy of Sciences

In the past decade, the aprotic lithium-oxygen(Li-O_2) battery has generated a great deal of interest because theoretically it can store more energy than today's lithium-ion batteries. Although considerable research efforts have been devoted to the R&D of this potentially disruptive technology, many scientific and engineering obstacles still remain to be addressed before a practical device could be realized. In this review, we summarize recent advances in the fundamental understanding of the O_2 electrochemistry in Li-O_2 batteries, including the O_2 reduction to Li_2O_2 on discharge and the reverse Li_2 O_2 oxidation on recharge and factors that exert strong influences on the redox of O_2/Li_2O_2. In addition,challenges and perspectives are also provided for the future study of Li—O_2 batteries.

关键词： Lithium-oxygen battery Oxygen electrochemistry Mechanism

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Dual-function redox mediator enhanced lithium-oxygen battery based on polymer electrolyte

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Journal of Materials Science & Technology 2022年第18期113卷 199-206页

作者： Muhammad Mushtaq Xianwei Guo Zihe Zhang Zhiyuan Lin Xiaolong Li zhangquan peng Haijun Yu Institute of Advanced Battery Materials and Devices Faculty of Materials and ManufacturingBeijing University of TechnologyBeijing 100124China Key Laboratory of Advanced Functional Materials Ministry of EducationBeijing University of TechnologyBeijing100124China State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022China

The polymer electrolyte based lithium-oxygen battery has showed higher safety than that of organic liquid ***,the energy efficiency and cycling stability are still the challenges for the practical application of lithium-oxygen ***,the 1,4 para benzoquinone has been demonstrated as dual-function redox mediator for promoting both oxygen reduction and oxygen evolution reactions of lithium-oxygen battery with polymer electrolyte,which have been confirmed by the Cyclic Voltammetry and discharge/charge test of battery under O_(2) gas,as well as the theoretical ***,the composite cathode that in-situ constructed by polymerizing electrolyte precursors with redox me-diator can be beneficial for the electrochemical *** composite cathode and lithium ions source,the polymer electrolyte based lithium-oxygen batteries can operate for long lifetime with low charge potentials and good rate ***,this work has highlighted the promising implementation of lithium-oxygen battery based on polymer electrolyte,in which the dual-function redox mediator are employed for both discharge and recharge processes.

关键词： Polymer electrolyte Lithium-oxygen battery Dual-function redox mediator Composite cathode Interfacial stability

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Material design at nano and atomic scale for electrocatalytic CO2 reduction

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Nano Materials Science 2019年第1期1卷 60-69页

作者： Fengjiao Yu penghui Wei Yang Yang Yuhui Chen Limin Guo zhangquan peng State Key Laboratory of Materials-oriented Chemical Engineering College of Chemical Engineering and School of Energy Science and Engineering Nanjing Tech University Nanjing Jiangsu 211816 China Jilin Engineering Normal University Changchun 130052 China State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Science Changchun Jilin 130022 China School of Applied Physics and Materials Wuyi University 22 Dongcheng Village Jiangmen 529020 China

Electrocatalytic CO2 reduction (ECR) into value-added chemicals offers potential solution for renewable energy as well as global carbon footprint concerns. In this review we introduce the general methods and metrics that are commonly applied in ECR, followed by a discussion of current reaction mechanisms and different pathways. We highlight how size and structure of electrocatalysts affect ECR performance and review recent advances in metalfree and single-atom catalysts. The challenges of ECR are also discussed and optimistic perspectives are made for future work.

关键词： CO2 electroreduction Material design Electrocatalyst Cell configuration

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