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Highly stable aqueous zinc-ion batteries enabled by suppressing the dendrite and by-product formation in multifunctional Al^(3+) electrolyte additive

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Nano Research 2022年第9期15卷 8039-8047页

作者： Xianlin Zhou Kaixuan Ma Qianyu Zhang gongzheng yang Chengxin Wang State key Laboratory of Optoelectronic Materials and Technologies School of Materials Science and EngineeringSun Yat-sen(Zhongshan)UniversityGuangzhou 510275China College of Materials Science and Engineering Sichuan UniversityChengdu 610064China

Rechargeable aqueous zinc-ion batteries(ZIBs)have gained extensive attention owing to the high safety,low cost,and high power/energy *** unfortunately the ZIBs universally suffer from the highly damaging series of side reactions,majorly including the insulating products formation,dendritic growth of zinc,and hydrogen *** date there are few reports on the effective strategy that can solve the problems at the same *** we propose a novel hybrid electrolyte with Al^(3+)as additive to construct an aqueous ZIB composed of metallic zinc anode and K_(0.51)V_(2)O_(5)(KVO)nanoplate *** highly reversible multistep K^(+)/Zn^(2+)-ions co-insertion/extraction in the lamellar structure with large interlayer spacing is clearly evidenced by systematical *** the presence of Al^(3+),the insulating basic zinc salts on the cathode surface have been reduced greatly,and the electrochemical potential window has been significantly expanded from 3 to 4.35 *** interestingly,the Al^(3+)acts as a dopant embedded into the lattice that strengthens the crystal *** from the suppressed zinc dendrite growth,the symmetrical Zn/Zn battery exhibited a satisfactory cycling life over 1,500 h at a high rate of 3 mA·cm^(-2)in the hybrid *** a result,the Zn/KVO batteries delivered a high specific capacity of 210 mAh·g^(-1)and retained high capacity retention of 91%after 1,600 h at a low current of 100 mA·g^(-1).

关键词： aqueous Zn-ion batteries hybrid electrolyte electrolyte additive vanadium-based cathode long cycle life

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Microsized SnS/Few-Layer graphene Composite with Interconnected Nanosized Building Blocks for Superior Volumetric Lithium and Sodium Storage

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Energy & Environmental Materials 2021年第2期4卷 229-238页

作者： Deliang Cheng Lichun yang Renzong Hu Jiangwen Liu Min Zhu guangdong Provincial Key Laboratory of Advanced Energy Storage Materials School of Materials Science and EngineeringSouth China University of TechnologyGuangzhou 510640China Institute of Advanced Materials Jiangxi Normal UniversityNanchang

To develop anode materials with superior volumetric storage is crucial for practical application of lithium/sodium-ion ***,we have developed a micro/nanostructured Sn S/few-layer graphene(Sn S/FLg)composite by facile scalable plasma *** the hybrid,SnS nanoparticles are tightly supported by FLg,forming nanosized primary particles as building blocks and assembling to microsized secondary *** this unique micro/nanostructure,the Sn S/FLg composite possesses a high tap density of 1.98 g cm^(-3)and thus ensures a high volumetric *** combination of Sn S nanoparticles and FLg nanosheets can not only enhance the overall electrical conductivity and facilitate the ion diffusion greatly,but alleviate the large volume expansion of Sn S effectively and maintain the electrode integrity during ***,the densely compacted Sn S/FLg composite exhibits superior volumetric lithium and sodium storage,including high volumetric capacities of 1926.5/1051.4 m Ah cm^(-3)at 0.2 A g^(-1),and high retained capacities of 1754.3/760.3 m Ah cm^(-3)after 500cycles at 1.0 A g^(-1).With superior volumetric storage performance and facile scalable synthesis,the Sn S/FLg composite can be a promising anode for practical batteries application.

关键词： micro/nanostructure SnS nanoparticle few-layer graphene volumetric storage anode

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Effects of a high fat diet on intestinal microbiota and gastrointestinal diseases

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World Journal of gastroenterology 2016年第40期22卷 8905-8909页

作者： Mei Zhang Xiao-Jiao yang Department of gastroenterology Xuanwu Hospital Capital Medical University Baijing 100053 China Mcgill University Montreal Quebee H3A 0G4 Canada

Along with the rapid development of society, lifestyles and diets have gradually changed. Due to overwhelming material abundance, high fat, high sugar and high protein diets are common. Numerous studies have determined that diet and its impact on gut microbiota are closely related to obesity and metabolic diseases. Different dietary components affect gut microbiota, thus impacting gastrointestinal disease occurrence and development. A large number of related studies are progressing rapidly. gut microbiota may be an important intermediate link, causing gastrointestinal diseases under the influence of changes in diet and genetic predisposition. To promote healthy gut microbiota and to prevent and cure gastrointestinal diseases, diets should be improved and supplemented with probiotics.

关键词： Intestinal microbiota gastrointestinal diseases High fat diet

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FeS_(2)/高岭石复合材料活化过一硫酸盐降解苯并芘性能

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硅酸盐学报 2024年第10期52卷 3093-3105页

作者：李春全宁晓田杨珊珊尚海灵袁方孙志明中国矿业大学(北京)化学与环境工程学院北京100083 中国地质大学(北京)水资源与环境学院北京100083 内蒙古自治区水利科学研究院呼和浩特010052

苯并芘(B[a]p)作为典型多环芳烃化合物之一,具有强致癌、致畸及致突变作用,广泛分布在土壤、大气以及水体环境。基于过硫酸盐的高级氧化技术因其快速、简便以及高效等优点在环境治理领域一直是研究热点。尤其是铁基催化材料,因其环保、... 详细信息

苯并芘(B[a]p)作为典型多环芳烃化合物之一,具有强致癌、致畸及致突变作用,广泛分布在土壤、大气以及水体环境。基于过硫酸盐的高级氧化技术因其快速、简便以及高效等优点在环境治理领域一直是研究热点。尤其是铁基催化材料,因其环保、成本低和反应活性高等特性被广泛应用在过硫酸盐活化领域,但其在应用过程中存在易氧化、易团聚以及Fe(Ⅱ)再生能力差等缺陷。因此,本工作采用一步水热法制备了FeS_(2)/高岭石复合材料,用于高效活化过一硫酸盐(PMS)降解B[a]P。其在投加量为2.0 g/L,初始B[a]p浓度为20 mg/L,PMS剂量为2 mmol/L的条件下,15 min内对B[a]p的去除率达到93%,并证实了体系中^(1)O_(2)和O_(2)^(·-)起主导作用。此外,在土壤体系中,随着复合材料和PMS用量的增加,B[a]p的降解率逐渐增加;随着水土比(质量比)的增加,呈现出先增加后降低的趋势;而随着pH值的增加,降解效率反而呈现降低的趋势,选取催化剂用量50 mg/g,PMS用量80 mg/g,水土比3:1以及pH值为3的条件下进行实验,60 min内对B[a]p的去除率达到69.02%。

关键词：高岭石二硫化铁苯并芘过硫酸盐活化土壤修复

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不同发酵模式下白黄侧耳的农艺性状

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菌物学报 2024年第8期43卷 108-117页

作者：郑世仲刘盛荣杨义辉魏奇黄千慧张维瑞宁德师范学院生物科学与工程学院福建宁德352100 宁德师范学院闽东特色生物资源福建省高校工程研究中心福建宁德352100 宁德师范学院海洋学院福建宁德352100 福建农林大学生命科学学院福建福州350002

白黄侧耳是一种世界性栽培的优质食用菌。为白黄侧耳子实体生产提供有价值参考,本研究考察白黄侧耳4种发酵模式(液体发酵、半固态发酵、固化培养基发酵和固态发酵)下的农艺性状。出菇试验结果显示,白黄侧耳固态发酵原基时间最短(26.45 ... 详细信息

白黄侧耳是一种世界性栽培的优质食用菌。为白黄侧耳子实体生产提供有价值参考,本研究考察白黄侧耳4种发酵模式(液体发酵、半固态发酵、固化培养基发酵和固态发酵)下的农艺性状。出菇试验结果显示,白黄侧耳固态发酵原基时间最短(26.45 d),其次是半固态发酵(28 d)和液体发酵(33.75 d),固化培养基发酵原基时间最长,为39.83 d。固态发酵子实体生长时间最短(8.5 d),液体发酵最长(26 d)。固态发酵生产周期最短(35.33 d),其次是半固态发酵(42.54 d)和液体发酵(59.67 d),固化培养基发酵周期最长(62.33 d)。固态发酵单菇重最大(3.41 g),固化培养基发酵最小(0.63 g)。半固态发酵产量最高(16.34 g/瓶),固化培养基发酵最低(1.64 g/瓶)。综上所述,白黄侧耳子实体生产上固态发酵和半固态发酵优于液体发酵和固化培养基发酵。本研究可为创新食用菌生产模式、发酵方法选择以及为白黄侧耳担孢子获取提供有价值参考。

关键词：食用菌白黄侧耳半固态发酵固化培养基发酵出菇参数

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Ru complex and N,P-containing polymers confined within mesoporous hollow carbon spheres for hydrogenation of CO_(2)to formate

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Nano Research 2023年第4期16卷 4515-4523页

作者： guoxiang yang Yasutaka Kuwahara Kohsuke Mori Catherine Louis Hiromi Yamashita Division of Materials and Manufacturing Science Graduate School of EngineeringOsaka University2-1 Yamada-okaSuitaOsaka 565-0871Japan Institute for Open and Transdisciplinary Research Initiatives(OTRI) Osaka University2-1 Yamada-okaSuitaOsaka 565-0871Japan Unit of Elements Strategy Initiative for Catalysts&Batteries(ESICB) Kyoto UniversityKatsuraKyoto 615-8520Japan JST PRESTO4-1-8 HonchoKawaguchiSaitama 332-0012Japan Sorbonne Université CNRSLaboratoire de Réactivitéde SurfaceLRSF-75005 ParisFrance

The development of reliable catalysts with both excellent activity and recyclability for carbon dioxide(CO_(2))hydrogenation is ***,a ternary hybrid heterogeneous catalyst,involving mononuclear Ru complex,N,P-containing porous organic polymers(POPs),and mesoporous hollow carbon spheres(Ru^(3+)-POPs@MHCS)is reported for CO_(2)hydrogenation to *** on comprehensive structural analyses,we demonstrated that Ru^(3+)-POPs were successfully immobilized within *** optimized Ru^(3+)-0.5POPs@MHCS catalyst,which was obtained with about 5 wt.%Ru^(3+)and 0.5 mmol POPs polymers confined into 0.3 g MHCS,exhibited high catalytic activity for CO_(2)hydrogenation to formate(turnover number(TON)>1,200 for 24 h under mild reaction conditions(4.0 MPa,120℃))and improved durability,compared to Ru^(3+)catalysts without POPs polymers(Ru^(3+)-MHCS)and unencapsulated MHCS(Ru^(3+)-0.5POPs)*** improved catalytic performance is attributed to the high surface area and large pore volume of MHCS which favors dispersion and stabilization of Ru^(3+)-***,the MHCS and POPs showed high CO_(2)adsorption ***^(3+)-POPs encapsulated into MHCS reduces the activation energy barrier for CO_(2)hydrogenation to formate.

关键词： heterogeneous catalysis porous organic polymers(POPs) mesoporous hollow carbon spheres CO_(2)hydrogenation formate synthesis

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Enhancing the compatibility of the amyloid-dye hybrid nanostructure for improved photo-biocatalysis

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Journal of Energy Chemistry 2023年第3期78卷 430-437,I0012页

作者： Zhen Dong Yanying Wang Qin yang Dan Li Peng Wu College of Chemistry Sichuan UniversityChengdu 610064SichuanChina Analytical&Testing Centre State Key Laboratory of Hydraulics and Mountain River EngineeringSichuan UniversityChengdu 610064SichuanChina College of Biomass Science and Engineering Sichuan UniversityChengdu 610064SichuanChina School of Chemistry and Chemical Engineering Henan Normal UniversityXinxiang 453007HenanChina

Artificial photosynthesis is significant for renewable energy generation,sustainable development,and environmental ***-protein hybrids are promising for developing photosynthesis mimics(e.g.,photo-biocatalysis),but their performances are far lower than the plant photosystems,partially because of the incompatibility between dye and the protein matrix that limits excited state electron transfer of the included ***,using ThT-insulin amyloid assembly as a model system,we proposed that increasing the dye-protein compatibility could lead to the improved photo-biocatalytic performance.A ThT derivative,ThTPD,was designed with the same electron acceptor but extended π-conjugated donor *** integrated into the insulin amyloid,the extended π-conjugated donor structure allowed increased binding affinity and energy with the amyloid matrix,thus better electron transport to the mediator to drive the photocatalytic ***,compared with ThT, ThTPD exhibited improved light absorption and longer excited state *** photo-biocatalytic performance of ThTPD-insulin amyloid was greatly improved as compared with that of ThT in reduced nicotinamide adenine dinucleotide(NADH) *** integrating with NADH-dependent L-glutamate reductase,the efficiency of the ThTPD-insulin amyloid hybrid was 2.8-fold higher than that of ThT in glutamate generation,showing promising feature in biocatalytic solar-to-chemical conversion.

关键词： Photo-biocatalysis Dye-protein assembly Insulin amyloid ThT Compatibility

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西藏珠峰地区乔松径向生长对气候变化的响应

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应用生态学报 2024年第5期35卷 1205-1213页

作者：李君刘泽王牌杨睿史丰鸣邓杰王国严石松林成都理工大学地理与规划学院成都610059 四川省高等学校人文社会科学重点研究基地青藏高原及其东缘人文地理研究中心成都610059

全球气候变暖会对青藏高原地区树木生长产生显著影响,然而,目前有关气候变化对西藏乔松径向生长的影响尚不清楚。本研究以西藏珠峰地区乔松为对象,开展树木年轮采样与处理,采用修正的负指数函数法、区域曲线标准法和断面积增量法去除生... 详细信息

全球气候变暖会对青藏高原地区树木生长产生显著影响,然而,目前有关气候变化对西藏乔松径向生长的影响尚不清楚。本研究以西藏珠峰地区乔松为对象,开展树木年轮采样与处理,采用修正的负指数函数法、区域曲线标准法和断面积增量法去除生长趋势,建立年表,运用相关分析、滑动相关分析方法探究乔松径向生长与气候因子的关系。结果表明:在1980s后,该区域温度出现显著上升趋势,帕默尔干旱指数(PDSI)出现降低趋势,而相对湿度在2004年前后由显著上升转变成下降趋势,区域气候呈现暖干化。相关分析表明,乔松径向生长与当年4—6月和7—9月的最低温度呈显著正相关,与当年6—8月相对湿度呈显著负相关,与当年1—4月降水量呈显著正相关。1983年升温突变后,乔松径向生长与当年7月和9月最低温度的关系由不相关变为显著正相关,而与当年8月相对湿度和9月降水量的关系由不相关变为显著负相关。滑动相关分析表明,乔松径向生长与当年7—9月最低温度表现出较为稳定的正相关关系。在未来气候变暖的背景下,温度升高将促进乔松径向生长。

关键词：乔松径向生长树木年轮气候变化升温突变

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Poly(vinylidene fluoride) Modified Commercial Paper as a Separator with Enhanced Thermal Stability and Electrolyte Affinity for Lithium-ion Battery

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Energy & Environmental Materials 2021年第4期4卷 664-670页

作者： Ze Zhang Meiling Zhou Ji Yu Jianxin Cai Zhenyu yang College of Chemistry Key laboratory of Jiangxi Province for Environment and Energy CatalysisNanchang UniversityNanchang Jiangxi 330031China

Commercial paper is of great potential as a ready-made substrate to make battery separator due to superior electrolyte affinity of ***,the direct utilization of commercial paper as a separator is impracticable because of its micro-sized holes between coarse cellulose fibers,which might induce short ***,a novel reinforced composite separator is proposed by modifying commercial paper(CP)with highdielectric polymer poly(vinylidene fluoride)(PVDF)via a vacuum filtration *** paper substrate enables excellent electrolyte wettability and high ionic conductivity of the CP-PVDF composite separator due to the superior electrolyte affinity of cellulose ***,the strong hydrogen bonds between F atoms in PVDF and H atoms in the-OH groups of cellulose endow the separator with high thermal stability and mechanical ***,the CP-PVDF exhibits outstanding interfacial compatibility toward Li metal anode and guarantees the prominent cycle durability of symmetric Li/Li cells up to 600 *** a result,the LiFePO_(4)/Li cells assembled with CP-PVDF separator show dramatic rate performance with high discharge capacity of 113.7 m Ah g^(-1),and prolonged cycle life at 5 *** work indicates that the paper-based composite membranes possess great potential for high-safety and electrochemical performance batteries.

关键词： commercial paper electrolyte affinity enhanced thermal stability lithium-ion battery PVDF-modified separator

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Belief propagation list bit-flip decoder for polar codes

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Science China(Information Sciences) 2021年第9期64卷 224-231页

作者： Yuyu yang Yaoyue HU Zhiwen PAN Nan LIU Shenjie XIA National Mobile Communications Research Laboratory Southeast University Huawei Technologies Co.Ltd.

Belief propagation(BP) decoder is a low decoding latency algorithm for polar codes. However,the block error rate(BLER) performance of the BP decoder is inferior to the cyclic redundancy check(CRC)aided successive cancellation list(CA-SCL) decoder with medium list size for polar codes. Thus, in this paper, we introduce a bit-flip method into the belief propagation list(BPL) decoder and propose a BPL bitflip(BPLF) decoder to improve the BLER performance of BP-based decoder for polar codes. The proposed decoder is based on a CRC-aided belief propagation list(CA-BPL) decoder, and the error-prone bits are obtained from the decoded result to construct flip bits set(FBS). The bits in FBS are flipped to obtain the correct decoding result. Moreover, the simulation results show that the BLER of the proposed BPLF decoder is significantly superior to that of the CA-BPL despite having the same list size, e.g., there is 0.75 dB gain at BLER = 10.4 with list size 64. Furthermore, the decoding complexity and latency of the proposed BPLF decoder are only slightly higher than those of CA-BPL decoder with the same list size in medium to high signal-to-noise ratio(SNR) region.

关键词： polar codes belief propagation bit-flip list decoder

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