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Single-atomic Zn-(C/N/O)lithiophilic sites induced stable lithium plating/stripping in anode-free lithium metal battery

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Nano Research 2023年第8期16卷 11473-11485页

作者： Shifei Huang Sirong Lu Yao Lv Nanrui Li Zhenwei Wu Geng Zhong Xiaolong Ren Yufeng Wang Bo Sun Yuxiong Huang Feiyu Kang Yidan Cao Institute of Materials Research Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China Tsinghua-Berkeley Shenzhen Institute Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China Shenzhen Institute for Quantum Science and Engineering Southern University of Science and TechnologyShenzhen 518055China College of Sciences and Institute for Sustainable Energy Shanghai UniversityShanghai 200444China Shell Catalysts&Technologies Shell Technology Center HoustonHouston TX 77082-3101USA Institute of Environment and Ecology Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China

For anode-free lithium metal battery,lithiophilic surface modification on the current collector can effectively reduce the lithium nucleation barrier,so as to regulate the electrodeposition of ***,atomically dispersed Zn-(C/N/O)lithiophilic sites in the amorphous carbon medium were introduced onto Cu by an in-situ induced ion coordination chemistry strategy to get the modified Zn@NC@RGO@Cu current collector.X-ray absorption spectroscopy(XAS)combined with scanning transmission electron microscopy in high angle annular dark field(STEM-HAADF)analysis proved the single atomic state of the zinc sites surrounded by C,N,and O with a coordination number of~*** to the electrochemical tests and first principle calculations,the ultra-uniformly dispersed Zn-(C/N/O)sites at the atomic level can effectively improve the lithium affinity,reduce the energy barrier for lithium nucleation,homogenize the lithium nucleation,and enhance an inorganic lithium compounds rich solid electrolyte interphase *** a result,the nucleation overpotential of lithium on the modified current collector was reduced to 7.7 mV,which was 5.4 times lower than that on bare *** lithium nucleation and deposition enabled stable Li plating/stripping and elevated Coulombic efficiency of 98.95%in Li||Cu cell after>850 *** retention of 89.7%was successfully achieved in the anode-free lithium metal battery after 100 cycles.

关键词： single atomic zinc carbon lithiophilic sites lithium dendrite anode-free

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SEI/dead Li-turning capacity loss for high-performance anode-free solid-state lithium batteries

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Journal of Energy Chemistry 2024年第9期96卷 145-152页

作者： Qianwen Yin Tianyu Li Hongzhang Zhang Guiming Zhong Xiaofei Yang Xianfeng Li Division of Energy Storage Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Long-Duration and Large-Scale Energy Storage Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina Laboratory of Advanced Spectro-Electrochemistry and Lithium-Ion Batteries Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina

anode-free solid-state lithium metal batteries(AF-SSLBs)have the potential to deliver higher energy density and improved safety beyond lithium-metal ***,the unclear mechanism for the fast capacity decay in AF-SSLBs,either determined by dead Li or solid electrolyte interface(SEI),limits the proposal of effective strategies to prolong cycling *** clarify the underlying mechanism,herein,the evolution of SEI and dead Li is quantitatively analyzed by a solid-state nuclear magnetic resonance(ss-NMR)technology in a typical LiPF6-based polymer *** results show that the initial capacity loss is attributed to the formation of SEI,while the dead Li dominates the following capacity loss and the growth rate is 0.141 mA h cm^(−2)cycle−*** reduce the active Li loss,the combination of inorganic-rich SEI and self-healing electrostatic shield effect is proposed to improve the reversibility of Li deposition/dissolution behavior,which reduces the capacity loss rate for the initial SEI and following dead Li generation by 2.3 and 20.1 folds,*** a result,the initial Coulombic efficiency(ICE)and stable CE increase by 15.1%and 15.3%in Li-Cu cells,which guides the rational design of high-performance AF-SSLBs.

关键词： Solid-state lithium batteries Solid-state NMR anode-free SEI Dead Li

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Iodine Promoted Ultralow Zn Nucleation Overpotential and Zn-Rich Cathode for Low-Cost, Fast-Production and High-Energy Density anode-free Zn-Iodine Batteries

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Nano-Micro Letters 2022年第12期14卷 373-386页

作者： Yixiang Zhang Lequan Wang Qingyun Li Bo Hu Junming Kang Yuhuan Meng Zedong Zhao Hongbin Lu State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceFudan University2005 Songhu RoadShanghai 200438People’s Republic of China Yiwu Research Institute of Fudan University Chengbei RoadYiwu CityZhejiang 322000People’s Republic of China

The anode-free design is a promising strategy to increase the energy density of aqueous Zn metal batteries(AZMBs).However,the scarcity of Zn-rich cathodes and the rapid loss of limited Zn greatly hinder their commercial *** address these issues,a novel anode-free Zniodine battery(AFZIB)was designed via a simple,low-cost and scalable *** plays bifunctional roles in improving the AFZIB overall performance:enabling high-performance Zn-rich cathode and modulating Zn deposition *** the cathode side,the ZnI_(2) serves as Zn-rich cathode *** graphene/polyvinyl pyrrolidone heterostructure was employed as an efficient host for ZnI_(2) to enhance electron conductivity and suppress the shuttle effect of iodine *** the anode side,trace I_(3)^(−) additive in the electrolyte creates surface reconstruction on the commercial Cu *** in situ formed zincophilic Cu nanocluster allows ultralow-overpotential and uniform Zn deposition and superior reversibility(average coulombic efficiency>99.91% over 7,000 cycles).Based on such a configuration,AFZIB exhibits significantly increased energy density(162 Wh kg^(−1)) and durable cycle stability(63.8% capacity retention after 200 cycles)under practical application *** the low cost and simple preparation methods of the electrode materials,this work paves the way for the practical application of AZMBs.

关键词： Zn metal battery Zn deposition Zn-rich cathode anode-free Energy density

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Dynamically lithium-compensated polymer artificial SEI to assist highly stable lithium-rich manganese-based anode-free lithium metal batteries

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Rare Metals 2024年第6期43卷 2527-2535页

作者： Ming-Ji Peng Jin-Qiu Zhou Ting-Ting Han Yang Zhou Jie Liu Na Xu Zhen-Kang Wang Wen-Bin Lin Cheng-Lin Yan Key Laboratory of Core Technology of High Specific Energy Battery and Key Materials for Petroleum and Chemical Industry College of EnergySoochow UniversitySuzhou 215006China Light Industry Instituteof Electrochemical Power Sources Suzhou 215006China School of Chemistry and Chemical Engineering Nantong UniversityNantong 226019China e-mail:jliu93@*** State Key Laboratory of Space Power-Sources Technology Shanghai Institute of Space Power-SourcesShanghai 200245China Centre Energie Materiaux et TélécommunicationsInstitut National de la Recherche ScientifiqueVarennesQC J3X 1S2Canada Zhangjiagang Industrial Technologies Soochow UniversitySuzhou 215006China

Owing to the unique structure,anode-free lithium metal batteries(AFLMBs)have higher energy density and lower production cost than traditional lithium metal batteries(LMBs)or lithium-ion batteries(LIBs),However,AFLMBs suffer from an inherently finite Li reservoir and exhibit poor cycle stability,low Coulombic efficiency(CE)and severe dendrite *** this work,polydiallyl lithium disulfide(PDS-Li)was successfully synthesized and coated on Cu current collector by electrochemical *** PDS-Li acts as an additional lithium resource to compensate for the irreversible loss of lithium during *** addition,the special structure and lithiophilicity of PDS-Li contribute to lower nucleation overpotential and uniform lithium *** coupled with Li-rich manganese-based(LRM)cathode of Li1.2Mn0.54Ni0.13Co0.13O2,the anode-free full cell exhibits significantly improved cycle stability over 100 cycles and capacity retention of 63.3%and 57%after 80 and 100 cycles,*** believe that PDS-Li can be used to ensure stable cycling performance and high-energy-density in AFLMBs.

关键词： anode-free Artificial solid electrolyte interphase(SEI) Lithium metal batteries Lithium-rich cathode Finite element simulation

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Surface-roughened current collectors for anode-free all-solid-state batteries

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Journal of Energy Chemistry 2022年第7期31卷 248-257,I0007页

作者： Donghee Gu Hyoungchul Kim Jong-Ho Lee Sangbaek Park Energy Materials Research Center Korea Institute of Science and Technology(KIST)Seoul 02792.Republic of Korea School of Civil Environmental and Architectural EngineeringKorea University.Seoul 02841.Republic of Korea Division of Nanoscience and Technology University of Science and Technology(UST)Seoul02792.Republicof Korea Department of Materials Science and Engineering Chungnam National UniversityDaejeon 34134.Republic of Korea

anode-free all-solid-state batteries(AFASSBs), composed of a fully lithiated cathode and a bare current collector(CC) that eliminates excess lithium, can maximize the energy density(because of a compact cell configuration) and improve the safety of solid-state systems. Although significant progress has been made by modifying CCs in liquid-based anode-free batteries, the role of CCs and the mechanism of Li formation on CCs in AFASSBs are still unexplored. Here, we systematically investigate the effect of the surface roughness of the CCs on the Li plating/stripping behavior in AFASSBs. The results show that the moderately roughened CC substantially improves the Coulombic efficiency and cycle stability of AFASSBs owing to the increased contact points between the solid electrolyte and the roughened CC. In contrast, the excessively roughened CC deteriorates the performance owing to the contact ***, an ex situ interface analysis reveals that the roughened surface of the CC could suppress the interfacial degradation during the Li ion extraction from a sulfide solid electrolyte to a CC. This provides an indication to the origin that hinders the electrochemical performance of AFASSBs. These findings show the potential for the application of surface-engineered CCs in AFASSBs and provide guidelines for designing advanced CCs.

关键词： anode-free Solid-state batteries Current collectors Surface roughness Li formation

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Zinc battery goes to anode-free

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Nano Research Energy 2023年第1期2卷 3-5页

作者： Xinhua Zheng Ruihao Luo Wei Chen Department of Applied Chemistry School of Chemistry and Materials ScienceHefei National Research Center for Physical Sciences at the MicroscaleUniversity of Science and Technology of ChinaHefei 230026China

The zinc(Zn)batteries have challenges include uncontrollable dendritic growth,unreasonable negative to positive ratio and limited areal *** highlight presents the latest development to resolve the uncontrollable Zn dendrite formation at high areal capacities of 200 mAh·cm^(-2) through a two-dimensional metal/metal-Zn alloy heterostructured *** anode-free Zn batteries with an attractive and practical pouch cell energy density of 62 Wh·kg^(-1) enlighten an arena towards their commercialization.

关键词： zinc battery anode-free 2D heterostructured interface ultrahigh areal capacity large-scale energy storage

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anode-less all-solid-state batteries:recent advances and future outlook

Materials Futures

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Materials Futures 2023年第1期2卷 122-131页

作者： Nohjoon Lee Jihoon Oh Jang Wook Choi School of Chemical and Biological Engineering Seoul National UniversitySeoul 08826Republic of Korea

While all-solid-state batteries have built global consensus with regard to their impact in safety and energy density,their anode-less versions have attracted appreciable attention because of the possibility of further lowering the cell volume and *** perspective article summarizes recent research trends in anode-less all-solid-state batteries(ALASSBs)based on different types of solid electrolytes and anticipates future directions these batteries may *** particularly aim to motivate researchers in the field to challenge remaining issues in ALASSBs by employing advanced materials and cell designs.

关键词： all-solid-state batteries anode-free anode-less interface stability lithium dendrite

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