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Amylopectin from Glutinous Rice as a Sustainable Binder for High-Performance Silicon Anodes

Energy & Environmental materials 2021年第2期4卷 263-268页

作者： han Yeu Ling Chengrui Wang Zhong Su Su Chen Hao Chen Shangshu Qian Dong-Sheng Li Cheng Yan milton Kiefel Chao Lai Shanqing Zhang School of Chemistry and materials Jiangsu Normal University Xuzhou Jiangsu China Centre for Clean Environment and Energy and School of Environment and Science Griffith University Gold Coast Campus Southport Qld 4222 Australia School of Chemistry Physics and mechanical Engineering Queensland University of Technology(QUT)Brisbane Qld 4000 Australia Key Laboratory of materials Processing and mold(Zhengzhou University)ministry of Education Zhengzhou China College of materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion materials China Three Gorges University Yichang 443002 China Institute for Glycomics Griffith University Gold Coast Campus Southport Qld 4222 Australia

Silicon(Si)has been investigated as a promising anode material because of its high theoretical capacity(4200 m ah g^(-1)).However,silicon anode suffers from huge volume changes during repeated charge–discharge *** this work,inspired by a remarkable success of the glutinous rice mortar in the Great Wall with ca.2000-year history,amylopectin(AP),the key ingredient responsible for the strong bonding force,is extracted from glutinous rice and utilized as a flexible,aqueous,and resilient binder to address the most challenging drastic volume-expansion and pulverization issues of silicon ***,the removal of toxic N-methyl-2-pyrrolidone(NmP)organic solvent makes the electrode fabrication process environmentally friendly and *** as-prepared Si-AP electrode with 60 wt%of Si can uphold a high discharge capacity of 1517.9 m ah g^(-1)at a rate of 0.1 C after 100 *** cycling stability of the Si-AP has been remarkably improved in comparison with both traditional polyvinylidene fluoride(PVDF)and aqueous carboxymethylcellulose(CmC)***,when the content of silicon in the Si-AP electrode increases to 70 wt%,a high discharge capacity of 1463.1 m ah g^(-1)can still be obtained after 50 cycles at 0.1°*** preliminary results suggest that the sustainably available and environmentally benign amylopectin binders could be a promising choice for the construction of highly stable silicon anodes.

关键词： amylopectin binder glutinous rice silicon anode sticky rice

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Bismuth Oxide Selenium/Graphene Oxide Composites:Toward High-Performance Electrodes for Aqueous Alkaline Battery

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Energy & Environmental materials 2021年第3期4卷 465-473页

作者： Yi-Lin Liu meng-Qiu Li Gui-Gen Wang Le-Yang Dang Fei Li mei Er Pam Hua-Yu Zhang Jie-Cai han Hui Ying Yang Shenzhen Key Laboratory for Advanced materials Harbin Institute of TechnologyShenzhenShenzhen 518055China Pillar of Engineering Product Development Singapore University of Technology and Design8 Somapah RoadSingapore City 487372Singapore National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of TechnologyHarbin 150080China

Aqueous alkaline battery represents a promising energy storage technology with both high energy density and high power density as rechargeable ***,the low theoretical capacities,kinetics and stability of anode materials have limited their developments and *** this study,we propose a novel method to produce two-dimensional layered bismuth oxide selenium(Bi_(2)O_(2)Se)and reduced graphene oxide(r GO)composites via a one-step hydrothermal *** volume change caused by phase change during rapid charging and discharging is significantly reduced and the capacity reaches 263.83 m ah g^(-1)at a current density of 0.5 A g^(-1).The Bi_(2)O_(2)Se/r GO electrode exhibits excellent cycling stability in which the capacity retention rate is 81.04%after 5000 *** importantly,the Bi_(2)O_(2)Se/r GO nanosheet composite is used as the anode electrode material with mnCo_(2)O_(4.5)@Ni(OH)_(2)as the cathode electrode material in aqueous alkaline *** the energy density is 76.16 W h kg^(-1),the power density reaches 308.65 W kg^(-1).At a power density of 10.21 k W kg^(-1),the energy density remains as high as 33.86 W h kg^(-1).The results presented here may advance the understanding of the issues facing the development of aqueous battery anode materials.

关键词： anode materials aqueous alkaline battery Bi_(2)O_(2)Se nanosheet reduced graphene oxide

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1000 Wh L-1 lithium-ion batteries enabled by crosslink-shrunk tough carbon encapsulated silicon microparticle anodes

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National Science Review 2021年第9期8卷 77-87页

作者： Fanqi Chen Junwei han Debin Kong Yifei Yuan Jing Xiao Shichao Wu Dai-ming Tang Yaqian Deng Wei Lv Jun Lu Feiyu Kang Quan-Hong Yang Nanoyang Group State Key Laboratory of Chemical Engineering School of Chemical Engineering and Technology Tianjin University Shenzhen Geim Graphene Center Tsinghua Shenzhen International Graduate School Tsinghua University CAS Key Laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology Chemical Sciences and Engineering Division Argonne National Laboratory International Center for materials Nanoarchitectonics(WPI-mANA) National Institute for Materials Science(NIMS) Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University

microparticulate silicon（Si）, normally shelled with carbons, features higher tap density and less interfacial side reactions compared to its nanosized counterpart, showing great potential to be applied as high-energy lithium-ion battery anodes. However, localized high stress generated during fabrication and particularly,under operating, could induce cracking of carbon shells and release pulverized nanoparticles, significantly deteriorating its electrochemical performance. Here we design a strong yet ductile carbon cage from an easily processing capillary shrinkage of graphene hydrogel followed by precise tailoring of inner *** a structure, analog to the stable structure of plant cells, presents ‘imperfection-tolerance' to volume variation of irregular Si microparticles, maintaining the electrode integrity over 1000 cycles with Coulombic efficiency over 99.5%. This design enables the use of a dense and thick(3 m ah cm–2) microparticulate Si anode with an ultra-high volumetric energy density of 1048 Wh L–1 achieved at pouch full-cell level coupled with a Li Ni0.8Co0.1mn0.1O2cathode.

关键词： lithium-ion batteries anode silicon microparticles volumetric capacity mechanical stability

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A lithiated gel polymer electrolyte with superior interfacial performance for safe and long-life lithium metal battery

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Journal of Energy Chemistry 2021年第4期30卷 313-322页

作者： Jia-Jia Yuan Chuang-Chao Sun Li-Feng Fang You-Zhi Song Yan Yan Ze-Lin Qiu Yu-Jie Shen han-Ying Li Bao-Ku Zhu Key Laboratory of macromolecular Synthesis and Functionalization(ministry of Education) Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027ZhejiangChina Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing 100084China

Rechargeable lithium metal batteries(LmBs)have gained much attention ***,the short lifespan and safety issues restrict their commercial *** we report a novel gel polymer electrolyte(GPE)based on lithiated poly(vinyl chloride-r-acrylic acid)(PVCAALi)to realize dendritesuppressing and long-term stable lithium metal *** chains ensure the quick gelation process and high electrolyte uptake,and lithiated PAA segments enable the increase of mechanical strength,acceleration of lithium-ion transmission and improvement of interfacial *** GPE showed much higher mechanical strength compared with other free-standing GPEs in previous *** displays a superior ionic conductivity of 1.50 m S cm^(-1) and a high lithium-ion transference number of 0.59 at room ***,the lithiated GPE exhibits excellent interfacial compatibility with lithium metal *** symmetrical cells with PVCAALi GPE yield low hysteresis of 50 m V over1000 h at 1.0 m A cm^(-2).And the possible mechanism of the lithiated GPE with improved lithium-ion transfer and interfacial property was ***,both the Li4Ti5O12/Li and lithium-sulfur(Li-S)cells assembled with PVCAALi GPE show outstanding electrochemical performance,retaining high discharge capacities of 133.8 m ah g^(-1) and 603.8 m ah g^(-1) over 200 cycles,*** work proves excellent application potential of the highly effective and low-cost PVCAALi GPE in safe and long-life LmBs.

关键词： Lithiation Gel polymer electrolyte Lithium dendrite Safety Lithium metal battery

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Rechargeable Zn-air batteries initiated by nickel–cobalt bimetallic selenide

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Journal of Energy Chemistry 2019年第11期28卷 34-40页

作者： Changqi Sun Xiaosong Guo Jingyan Zhang Genliang han Daqiang Gao Xiaoping Gao Key Laboratory of Sensor and Sensing Technology Gansu Academy of SciencesLanzhou 730000GansuChina College of materials Science and Engineering Qingdao University of Science and TechnologyQingdao 266061ShandongChina Key Laboratory for magnetism and magnetic materials of mOE Key Laboratory of Special Function Materials and Structure Design of MOELanzhou UniversityLanzhou 730000GansuChina

A Zn-air battery is a potential next-generation energy storage device owing to its extremely high theoretical energy density. Currently, it is important to explore non-precious metal electrocatalysts with high electroactivity and stability in the oxygen reduction reaction(ORR) and oxygen evolution reaction(OER) for the development of Zn-air batteries. In this work, porous(Ni,Co)Se2 nanosheets were synthesized by selenizing Ni Co2O4 nanosheets. By regulating the conductivity and morphology of the sample, the prepared porous(Ni,Co)Se2 nanosheets show enhanced electrocatalytic activity for OER and ORR compared to Ni Co2O4 nanosheets. The aqueous Zn-air battery using porous(Ni,Co)Se2 nanosheets as the air cathode exhibits superior charge and discharge performance(1.98 V for charging and 1.17 V for discharging), high specific capacity(770 m ah/g), and excellent cycle stability(140 h). These results indicate that the porous(Ni,Co)Se2 nanosheets are suitable as a bifunctional electrocatalyst for future Zn-air batteries.

关键词： Electrocatalyst Zn-air batteries Oxygen evolution reaction Oxygen reduction reaction

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Spatially Bandgap-Graded mo S2（1-x）Se2x Homojunctions for Self-Powered Visible–Near-Infrared Phototransistors

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Nano-micro Letters 2020年第2期12卷 185-198页

作者： Hao Xu Juntong Zhu Guifu Zou Wei Liu Xiao Li Caihong Li Gyeong Hee Ryu Wenshuo Xu Xiaoyu han Zhengxiao Guo Jamie HWarner Jiang Wu Huiyun Liu Department of Electronic and Electrical Engineering University College LondonTorrington PlaceLondon WC1E 7JEUK School of Energy Soochow Institute for Energy and Materials Innovationsand Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu ProvinceSoochow UniversitySuzhou 215006People’s Republic of China London Centre for Nanotechnology University College LondonLondon WC1H 0AHUK Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054People’s Republic of China Department of materials University of OxfordParks RoadOxford OX13PHUK Department of Chemistry University College London20 Gordon StBloomsburyLondon WC1H 0AJUK Department of Chemistry The University of Hong KongPokfulam RoadHong KongPeople’s Republic of China Zhejiang Institute of Research and Innovation The University of Hong KongQingshan Lake SciTech CityHangzhouPeople’s Republic of China

Ternary transition metal dichalcogenide alloys with spatially graded bandgaps are an emerging class of two-dimensional materials with unique features,which opens up new potential for device ***,visible–near-infrared and self-powered phototransistors based on spatially bandgap-graded moS2(1−x)Se2x alloys,synthesized by a simple and controllable chemical solution deposition method,are *** graded bandgaps,arising from the spatial grading of Se composition and thickness within a single domain,are tuned from 1.83 to 1.73 eV,leading to the formation of a homojunction with a builtin electric ***,a strong and sensitive gate-modulated photovoltaic effect is demonstrated,enabling the homojunction phototransistors at zero bias to deliver a photoresponsivity of 311 mA W−1,a specific detectivity up to^10^11 Jones,and an on/off ratio up to^10^***,when illuminated by the lights ranging from 405 to 808 nm,the biased devices yield a champion photoresponsivity of 191.5 A W−1,a specific detectivity up to^1012 Jones,a photoconductive gain of 10^6–10^7,and a photoresponsive time in the order of^50 *** results provide a simple and competitive solution to the bandgap engineering of two-dimensional materials for device applications without the need for p–n junctions.

关键词： Transition metal dichalcogenides Graded bandgaps Homojunctions Phototransistors Self-powered

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Talcum-doped composite separator with superior wettability and heatproof properties for high-rate lithium metal batteries

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Chinese Chemical Letters 2023年第1期34卷 139-144页

作者： mengqiu Yang Yuanpeng Ji Yunfa Dong Botao Yuan Liwei Dong Yuanpeng Liu Sue Hao Chunhui Yang Xiaoqiang Wu Qingquan Kong Jiecai han Weidong He mIIT Key Laboratory of Critical materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150080China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments and Center for Composite Materials and StructuresHarbin Institute of TechnologyHarbin 150080China State Key Laboratory of Urban Water Resource and Environment Harbin Institute of TechnologyHarbin 150080China School of mechanical Engineering Chengdu UniversityChengdu 610106China Chongqing Research Institute Harbin Institute of TechnologyChongqing 401151China

Separator is supposed to own outstanding thermal stability,superior wettability and electrolyte uptake,which is essential for developing high-rate and safe lithium metal batteries(LmBs).However,commercial polyolefin separators possess poor wettability and limited electrolyte *** addressing this issue,we put forward a composite separator to implement above functions by doping layered-silicate(talcum)into polyvinylidene fluoride(PVDF).With significant improvement of electrolyte absorption benefiting from the strong adsorption energy values(-1.64-1.70 eV)between talcum and the electrolyte in lithium metal batteries,PVDF/Talcum(PVDF/Tm)composite separator owns a small contact angle and superior electrolyte ***/Tm composite separator with 10 wt%talcum(T-10)owns a tiny contact angle of 8°,while those of polypropylene(PP)and PVDF are 48°and 20°with commercial ***,the addition of thermotolerant talcum endows the T-10 composite separator with great thermostability,whose thermal shrinkage is only 5.39%at 150°C for 0.5 *** cell with LiFeO4cathode and the T-10 composite separator reaches 91.7 m ah/g in discharge capacity at 4.8 m A/cm^(2)(10 C),far superior to that with pure PVDF separator(56.3 m ah/g)and PP(51.4 m ah/g).

关键词： Lithium metal batteries Composite separator PVDF Talcum Wettability Thermal stability

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Bimetallic CoNiSe_(2)/C nanosphere anodes derived from Ni-Co-metal-organic framework precursor towards higher lithium storage capacity

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Chinese Chemical Letters 2023年第2期34卷 534-541页

作者： Weifan Zhang Lei Wang Guochun Ding Yuejia Yang Guang Yang Jing Xu Ningning Xu Lingling Xie Qing han Limin Zhu Xiaoyu Cao Jianmin ma School of Chemistry and Chemical Engineering Henan University of TechnologyZhengzhou 450001China School of Environmental Engineering Henan University of TechnologyZhengzhou 450001China Key Laboratory of High Specific Energy materials for Electrochemical Power Sources of Zhengzhou City Henan University of TechnologyZhengzhou 450001China School of materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731China

Through uncomplicated carbonation process,a carbon-embedded CoNiSe_(2)/C nanosphere was synthesized from Ni-Co-mOF (metal-organic framework) precursor whose controllable structure and synergistic effect of bimetallic Ni/Co brought CoNiSe_(2)/C anodes with high specific surface area (172.79 m^(2)/g) and outstanding electrochemical ***_(2)/C anodes obtained reversible discharge capacities of850.9 mah/g at 0.1 A/g after cycling for 100 *** addition,CoNiSe_(2)/C exhibits excellent cycle stability and reversibility in the rate test at a current density of 0.1–2.0 A/*** the current density returns to 0.5 A/g for 150 cycles,its discharge ratio the capacity is 330.8 m ah/*** impedance spectroscopy (EIS) tests suggested that CoNiSe_(2)/C anodes had a lower charge transfer impedance of 130.02Ωafter 30 ***-situ X-ray diffraction (XRD) tests confirmed the alloying mechanism of CoNiSe_(2)/C which realized higher lithium storage *** work affords substantial evidence for the extension of bimetallic selenides in secondary batteries,promoting the development of bimetallic selenides in anode materials for LIBs.

关键词： mOFs Bimetallic compound CoNiSe_(2)/C anode nanosphere Lithium-ion batteries Lithium storage performance

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急性脑梗死患者入院时Hcy、HmGB1、TLR4水平与单核巨噬细胞极化的相关性

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检验医学与临床 2024年第14期21卷 1996-2000页

作者：王亮亮韩若东张亚飞吴国柱徐彦龙安徽医科大学附属亳州医院重症医学科安徽亳州236800

目的探讨急性脑梗死(ACI)患者入院时同型半胱氨酸(Hcy)、高迁移率族蛋白B1(HmGB1)、Toll样受体4(TLR4)水平与单核巨噬细胞极化的相关性。方法选择2020年8月至2022年8月该院收治的107例ACI患者为病例组,另选取同期体检健康者50例为对照组... 详细信息

目的探讨急性脑梗死(ACI)患者入院时同型半胱氨酸(Hcy)、高迁移率族蛋白B1(HmGB1)、Toll样受体4(TLR4)水平与单核巨噬细胞极化的相关性。方法选择2020年8月至2022年8月该院收治的107例ACI患者为病例组,另选取同期体检健康者50例为对照组,比较2组入院时血清Hcy、HmGB1、TLR4水平,比较2组单核巨噬细胞极化情况[m1型细胞比例、m2型细胞比例、m1/m2比值、m1型极化标志物(白细胞介素-1β、肿瘤坏死因子-α)、m2型极化标志物(白细胞介素-10、转化生长因子-β)],分析ACI患者Hcy、HmGB1、TLR4水平与单核巨噬细胞极化的关系,分析ACI患者Hcy、HmGB1、TLR4水平与ACI患者预后的关系。根据ACI患者预后情况,将患者分为预后良好组和预后不良组,比较其血清Hcy、HmGB1、TLR4水平。通过受试者工作特征(ROC)曲线分析Hcy、HmGB1、TLR4对ACI预后的预测效能。结果与对照组比较,病例组血清Hcy、HmGB1、TLR4水平明显升高(Pm1型细胞比例、m1/m2比值、白细胞介素-1β、肿瘤坏死因子-α水平明显升高(PmGB1、TLR4水平与m1型细胞比例、m1/m2比值、白细胞介素-1β和肿瘤坏死因子-α水平呈正相关(PmGB1、TLR4水平明显升高(PmGB1、TLR4联合预测ACI预后的效能较高,其曲线下面积、灵敏度、特异度依次为0.840、77.80%、80.00%。结论Hcy、HmGB1、TLR4在ACI患者外周血中呈高表达,其水平与单核巨噬细胞极化及预后关系密切,有望成为ACI临床诊治的生物标志物。

关键词：急性脑梗死同型半胱氨酸高迁移率族蛋白B1 Toll样受体4 单核巨噬细胞极化预后

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Enabling stable 4.6 V LiCoO_(2) cathode through oxygen charge regulation strategy

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Journal of Energy Chemistry 2023年第1期76卷 557-565,I0014页

作者： Wen Zhang Xiaoyu Zhang Fangyuan Cheng meng Wang Jing Wan Yuyu Li Jia Xu Yi Liu Shixiong Sun Yue Xu Chun Fang Qing Li Jiantao han Yunhui Huang State Key Laboratory of material Processing and Die&mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074HubeiChina Department of Applied Physics Chongqing UniversityChongqing 401331China Key Laboratory of Optoelectronic Chemical materials and Devices of ministry of Education Jianghan UniversityWuhan 430056HubeiChina

LiCoO_(2) is the preferred cathode material for consumer electronic products due to its high volumetric energy density. However, the unfavorable phase transition and surface oxygen release limits the practical application of LiCoO_(2)at a high-voltage of 4.6 V to achieve a higher energy density demanded by the market. Herein, both bulk and surface structures of LiCoO_(2)are stabilized at 4.6 V through oxygen charge regulation by Gd-gradient doping. The enrichment of highly electropositive Gd on LiCoO_(2) surface will increase the effective charge on oxygen and improve the oxygen framework stability against oxygen *** the other hand, Gd ions occupy the Co-sites and suppress the unfavorable phase transition and microcrack. The modified LiCoO_(2) exhibits superior cycling stability with capacity retention of 90.1% over 200 cycles at 4.6 V, and also obtains a high capacity of 145.7 m ah/g at 5 C. This work shows great promise for developing high-voltage LiCoO_(2) at 4.6 V and the strategy could also contribute to optimizing other cathode materials with high voltage and large capacity, such as cobalt-free high-nickel and lithiumrich manganese-based cathode materials.

关键词： Li-ion batteries 4.6 V LiCoO_(2) Gd-gradient doping Oxygen charge Cycle stability

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