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Strengthening synergistic effects between hard carbon and soft carbon enabled by connecting precursors at molecular level towards high-performance potassium ion batteries

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Nano Research 2023年第8期16卷 10985-10991页

作者： Hongqiang Xu Boshi Cheng Quan Du Yuting Zhang Haojie Duan Ishioma L.Egun Bo Yin Haiyong He Ningbo Institute of Materials Technology and Engineering Chinese Academy of SciencesNingbo 315201China University of Chinese Academy of Sciences Beijing 101400China

Synergistic effects between hard carbons and soft carbons are proven to be helpful for improving the electrochemical performance of carbonaceous anode for potassium-ion batteries(PIBs).However,the phase separation of precursors limits the synergistic effects and improvement of electrochemical ***,inspired by the esterification reaction,the precursors of two sorts of carbon are connected at the molecular level,which boosts the synergistic effects in hybrid carbon,resulting in excellent electrochemical kinetics and low charge/discharge ***,the hybrid carbon anode exhibited a high specific capacity of 121 mAh·g^(−1)at 3.2 A·g^(−1),a high-rate capability,and stable cycling *** 500 cycles at 1 A·g^(−1),the average capacity fading is only 0.078%per cycle.

关键词： potassium ion batteries anode carbon chemical bond

Pillar effect boosting the electrochemical stability of Prussian bluepolypyrrole for potassium ion batteries

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Nano Research 2023年第5期16卷 6326-6333页

作者： Mengmeng Zhou Xiaomeng Tian Ying Sun Xiaojun He Hui Li Tianyi Ma Qin Zhao Jieshan Qiu Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials of Liaoning Province Institute of Clean Energy ChemistryCollege of ChemistryLiaoning UniversityShenyang 110036China Anhui Key Laboratory of Coal Clean Conversion and High Valued Utilization Key Laboratory of Metallurgical Emission Reduction&Resources Recycling Ministry of EducationSchool of Chemistry and Chemical EngineeringAnhui University of TechnologyMaanshan 243002China School of Science RMIT UniversityMelbourne VIC 3000Australia State Key Laboratory of Chemical Resource Engineering College of Chemical EngineeringBeijing University of Chemical TechnologyBeijing 100029China

Due to the high theoretical capacity and electrode potential,Prussian blue is regarded as promising cathode material for potassium ion ***,inferior structural stability,poor electronic conductivity,ambiguous energy storage mechanism have limited the application of Prussian blue ***,a highly stable Prussian blue-polypyrrole(PB-PPY)composite has been prepared by a facile one-step ***-PPY displays higher discharging capacity,better rate capacity,and longer cycling lifespan than that of pure Prussian blue in potassium ion *** superior electrochemical performance can be attributed to the unique synthesis strategy to reduce the content of vacancies and crystal water in Prussian blue and enhance the ***,partial K ions have been evidenced that could remain in the Prussian blue framework,which contributes the long-term cycling *** K ions in the framework play the role of“pillars”to support the framework of Prussian blue and relieve the structural stress during the intercalation and de-intercalation of K *** work will reveal a new energy storage mechanism of Prussian blue and promote the design of high stability Prussian blue in the future.

关键词： Prussian blue high-stability framework pillar effect potassium ion batteries polypyrrole

Constructing oxygen-deficient V_(2)O_(3)@C nanospheres for high performance potassium ion batteries

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Chinese Chemical Letters 2023年第3期34卷 507-511页

作者： Qiang Deng Luolan Wang Jing Li Qian Cheng Xiaozhao Liu Changdong Chen Qimeng Zhang Wentao Zhong Hua Wang Lijue Wu Chenghao Yang Guangzhou Key Laboratory for Surface Chemistry of Energy Materials New Energy Research InstituteSchool of Environment and EnergySouth China University of TechnologyGuangzhou 510006China Guangdong Jiana Energy Technology Co. Ltd.Qingtang TownYingde 513056China

potassium ion batteries(PIBs) have been regarded as promising alternatives to lithium ion batteries(LIBs)on account of their abundant resource and low cost in large scale energy storage applications. However,it still remains great challenges to explore suitable electrode materials that can reversibly accommodate large size of potassium ions. Here, we construct oxygen-deficient V_(2)O_(3)nanoparticles encapsulated in amorphous carbon shell(Od-V_(2)O_(3)@C) as anode materials for PIBs by subtly combining the strategies of morphology and deficiency engineering. The MOF derived nanostructure along with uniform carbon coating layer can not only enables fast K+migration and charge transfer kinetics, but also accommodate volume change and maintain structural stability. Besides, the introduction of oxygen deficiency intrinsically tunes the electronic structure of materials according to DFT calculation, and thus lead to improved electrochemical performance. When utilized as anode for PIBs, Od-V_(2)O_(3)@C electrode exhibits superior rate capability(reversible capacities of 262.8, 227.8, 201.5, 179.8, 156.9 mAh/g at 100, 200, 500, 1000 and2000 mA/g, respectively), and ultralong cycle life(127.4 mAh/g after 1000 cycles at 2 A/g). This study demonstrates a feasible way to realize high performance PIBs through morphology and deficiency engineering.

关键词： V_(2)O_(3)@C Nanospheres Oxygen deficiency potassium ion batteries Anode

A review of hard carbon anode: Rational design and advanced characterization in potassium ion batteries

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InfoMat 2022年第2期4卷 24-52页

作者： Hang Lei Jinliang Li Xiyun Zhang Liang Ma Zhong Ji Zilong Wang Likun Pan Shaozao Tan Wenjie Mai Guangdong Engineering&Technology Research Centre of Graphene-like Materials and Products Department of ChemistryCollege of Chemistry and Materials ScienceJinan UniversityGuangzhouChina Siyuan Laboratory Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy MaterialsDepartment of PhysicsJinan UniversityGuangzhouGuangdongChina Shanghai Key Laboratory of Magnetic Resonance School of Physics and Electronic ScienceEast China Normal UniversityShanghaiChina

K-ion batteries(KIBs)have attracted tremendous attention and seen significant development because of their low price,high operating voltage,and properties similar to those of Li-ion *** the field of development of full batteries,exploring high-performing and low-cost anode materials for K-ion storage is a crucial *** to their excellent cost effectiveness,abundant precursors,and environmental benignancy,hard carbons(HCs)are considered promising anode materials for *** a result,researchers have devoted much effort to quantify the properties and to understand the underlying mechanisms of HC-based *** this review,we mainly introduce the electrochemical reaction mechanism of HCs in KIBs,and summarize approaches to further improve the electrochemical performance in HC-based materials for K-ion *** addition,we also highlight some advanced in situ characterization methods for understanding the evolutionary process underlying the potassiation–depotassiation process,which is essential for the directional electrochemical performance optimization of ***,we raise some challenges in developing smart-structured HC anode materials for KIBs,and propose rational design principles and perspectives serving as the guidance for the targeted optimization of HC-based KIBs.

关键词： advanced characterization hard carbon heteroatom doping potassium ion batteries structural engineering

Improvement in potassium ion batteries electrodes: Recent developments and efficient approaches

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Journal of Energy Chemistry 2021年第11期30卷 307-337,I0007页

作者： Syed Musab Ahmed Guoquan Suo Wei Alex Wang Kai Xi Saad Bin Iqbal School of Materials Science and Engineering Shaanxi University of Science and TechnologyXi’an 710021ShaanxiChina Beijing Key Laboratory of Bio-inspired Energy Materials and Devices School of Space and EnvironmentBeihang UniversityBeijing 100191China Cambridge Graphene Centre Department of EngineeringUniversity of CambridgeCambridge CB30FAUK Department of Chemical and Energy Engineering Faculty of Process and System EngineeringOtto-von-Guericke UniversitätMagdeburg 39106Germany

Demand for efficient and continuous application for high-grid energy storage systems involves the study towards novel battery technologies. Hence, considering the vast naturally available resources of potassium all over the world and its encouraging intercalation chemistries, it has recently enticed attention in electrochemical energy storage industry in the form of potassium ion batteries (PIBs). The major factor in this K+ based battery, is to develop efficient approaches to manufacture electrode substance to intercalate its big size potassium ions with considerable voltage, kinetics, charge/discharge capacity, capacity retention, cost, etc. This study contributes in the recent developments of anode and cathode materials for PIBs, including several electrode materials in regards to synthesis, structure, electrochemical performance, and K-storage mechanisms. Finally, the review contributes to provide helpful sources for the increasing number of scientists working in this industry regarding its critical issues and challenges and also to indicate the future direction of electrode materials in PIBs.

关键词： potassium ion batteries Efficient approaches Recent developments

Advanced metal sulfide anode for potassium ion batteries

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Journal of Energy Chemistry 2018年第2期27卷 373-374页

作者： Tao Li Qiang Zhang Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua University

potassium-ion batteries（KIBs） are a promising alternative to lithium-ion batteries owning to the abundance of potassium on Earth and the relatively low K/K＋redox couple. To date, KIBs remains its infancy and the investigation of anode materials mainly focused on carbon-based materials, which deliver limited reversible capacity. Hence, it is imperative to explore alternative anode materials with high reversible capacity for KIBs. Recently, a pioneering work from Chen’s group reported a nanocomposite of Sb2S3 nanoparticles anchored on porous S,N-codoped graphene（denoted as Sb2S3-SNG） as an advanced anode material for KIBs, which exhibited remarkable enhancements of both capacity and cycling stability, highlighting the rational structure design of Sb2S3-SNG for maximum utilization of Sb2S3 nanoparticles and graphene layers for energy storage applications in high-performance KIBs.

关键词： potassium ion batteries Metal sulfide Graphene Energy materials

Advanced Anode Materials of potassium ion batteries:from Zero Dimension to Three Dimensions

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Nano-Micro Letters 2021年第1期13卷 208-244页

作者： Jiefeng Zheng Yuanji Wu Yingjuan Sun Jianhua Rong Hongyan Li Li Niu Department of Materials Science and Engineering College of Chemistry and Materials ScienceJinan UniversityGuangzhou 510632People’s Republic of China Center for Advanced Analytical Science c/o School of Chemistry and Chemical EngineeringGuangzhou UniversityGuangzhou 510006People’s Republic of China

potassium ion batteries(PIBs)with the prominent advantages of sufficient reserves and economical cost are attractive candidates of new rechargeable batteries for large-grid electrochemical energy storage systems(EESs).However,there are still some obstacles like large size of K+to commercial PIBs ***,rational structural design based on appropriate materials is essential to obtain practical PIBs anode with K+accommodated and fast *** design has been considered as one of the effective strategies to solve these issues owing to unique physicochemical ***,quite a few recent anode materials with different dimensions in PIBs have been reported,mainly involving in carbon materials,metal-based chalcogenides(MCs),metal-based oxides(MOs),and alloying *** these anodes,nanostructural carbon materials with shorter ionic transfer path are beneficial for decreasing the resistances of ***,MCs,MOs,and alloying materials with nanostructures can effectively alleviate their stress ***,these materials are classified into 0D,1D,2D,and ***,the relationship between different dimensional structures and the corresponding electrochemical performances has been ***,some strategies are proposed to deal with the current *** that the readers are enlightened from this review to carry out further experiments better.

关键词： potassium ion batteries Anode Structure design Nanomaterials Dimensions

Plum pudding model inspired KVPO4F@3DC as high-voltage and hyperstable cathode for potassium ion batteries

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Science Bulletin 2020年第15期65卷 1242-1251,M0003页

作者： Zhaomeng Liu Jue Wang Bingan Lu School of Physics and Electronics Hunan UniversityChangsha 410082China College of Chemistry and Chemical Engineering Central South UniversityChangsha 410083China State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body Hunan UniversityChangsha 410082China Fujian Strait Research Institute of Industrial Graphene Technologies Quanzhou 362000China

The investigation on the cathode material of potassium ion batteries(PIBs),one of the most promising alternatives to lithium ion batteries,is of great *** vanadium fluorophosphate(KVPO4F)with a high working voltage is an appealing cathode candidate for PIBs,while the poor cycling performance and low electronic conductivity dramatically hinder the ***,a plum pudding model inspired three-dimensional amorphous carbon network modified KVPO4F composite(KVPO4F@3DC)is successfully designed in this study to tackle these *** the composite,KVPO4F particles are homogeneously wrapped by a layer of amorphous carbon and bridged by crosslinked large area carbon *** the cathode for PIBs,the KVPO4F@3DC composite exhibits a high average operating voltage about 4.10 V with a super-high discharge capacity of 102.96 mAh g^-1 at 20 mA g^-*** excellent long cycle stability with a capacity retention of 85.4%over 550 cycles at 500 mA g^-1 is *** addition,it maintains 83.6%of its initial capacity at 50 mA g^-1 after 100 cycles at 55℃.The design of KVPO4F@3DC with plum pudding structure provides facilitative electron conductive network and stable electrode/electrode interface for electrode,successfully innovating an ultra-stable and high-performance cathode material for potassium ion batteries.

关键词： Plum pudding model Cathode potassium vanadium fluorophosphate potassium ion batteries High working voltage

A high-volumetric-capacity bismuth nanosheet/graphene electrode for potassium ion batteries

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Science China Materials 2020年第10期63卷 1920-1928页

作者： Linchao Zeng Minsu Liu Peipei Li Guangmin Zhou Peixin Zhang Ling Qiu Shenzhen Geim Graphene Center Tsinghua-Berkeley Shenzhen InstituteTsinghua UniversityShenzhen 518055China College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518060China School of Materials Science and Engineering Hefei University of TechnologyHefei 230009China

potassium ion batteries(PIBs)with high-volumetric energy densities are promising for next-generation low-cost energy storage *** bismuth(Bi)with a structure similar to graphite,is a promising anode material for PIBs due to its high theoretical volumetric capacity(3763 mA h cm^−3)and relatively low working potential(−2.93 V *** hydrogen electrode).However,it experiences severe capacity decay caused by a huge volume expansion of Bi when alloying with *** study reports a flexible and free-standing Bi nanosheet(BiNS)/reduced graphene oxide composite membrane with designed porosity close to the expansion ratio of BiNS after *** controlled pore structure improves the electron and ion transport during cycling,and strengthens the structural stability of the electrode during potassiation and depotassiation,leading to excellent electrochemical performance for potassium-ion *** particular,it delivers a high reversible volumetric capacity of 451 mA h cm^−3 at the current density of 0.5 A g^−1,which is much higher than the previously reported commercial graphite material.

关键词： potassium ion batteries high volumetric energy density bismuth nanosheet controlled pore structure graphite