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Highly efficient recovery of waste LiNi_(x)Co_(y)Mn_(z)O_(2) cathode materials using a process involving pyrometallurgy and hydrometallurgy

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Frontiers of Environmental Science & Engineering 2024年第2期18卷 149-160页

作者： Tianwei Zhang Juanye Dao jinsong wang Yuzhong Guo Rundong Wan Chengping Li Xian Zhou Zhengfu Zhang Faculty of Materials Science and Engineering Kunming University of Science and TechnologyKunming 650093China

Substantial environmental and economic benefits can be achieved by recycling used lithium-ion batteries. Hydrometallurgy is often employed to recover waste LiNi_(x)Co_(y)Mn_(z)O_(2) cathode materials. As Ni, Co and Mn are transition metals, they exhibit similar properties;therefore, separating them is difficult. Thus, most researchers have focused on leaching processes, while minimal attention has been devoted to the separation of valuable metals from waste LiNi_(x)Co_(y)Mn_(z)O_(2) cathode materials. Herein, we propose an environment-friendly, gentle process involving the usage of pyrometallurgy and hydrometallurgy to gradually leach valuable metals and effectively separate them. Interestingly, Li is recovered through a reduction roasting and water leaching process using natural graphite powder, Ni and Co are recovered through ammonia leaching and extraction processes and Mn is recovered through acid leaching and evaporation–crystallization processes. Results show that ~87% Li, 97.01% Co, 97.08% Ni and 99% Mn can be leached using water, ammonia and acid leaching processes. The result obtained using the response surface methodology shows that the concentration of (NH4)2SO3 is a notable factor affecting the leaching of transition metals. Under optimal conditions, ~97.01% Co, 97.08% Ni and 0.64% Mn can be leached out. The decomposition of LiNi_(x)Co_(y)Mn_(z)O_(2) is a two-step process. This study provides valuable insights to develop an environment-friendly, gentle leaching process for efficiently recycling valuable metals, which is vital for the lithium-ion battery recycling industry.

关键词： Waste LiNixCoyMnzO2 cathode materials Leaching Effective separation Series process

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Evolution history dominantly regulates fine root lifespan in tree species across the world

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Forest Ecosystems 2024年第4期11卷 516-525页

作者： Xingzhao Huang Zhouying Lu Fangbing Li Yang Deng Fangfang Wan Quancheng wang Fousseni Folega jinsong wang Zijian Guo Anhui Province Key Laboratory of Forest Resources and Silviculture Anhui Agricultural UniversityHefei 230036China State Key Laboratory of Subtropical Silviculture Zhejiang A&F UniversityHangzhou 311300China Key Laboratory of Ecosystem Network Observation and Modeling Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China Laboratory of Botany and Plant Ecology(LBEV) University of LomeTogo01PoBox 1515LomeTogo State Key Laboratory of Efficient Production of Forest Resources Beijing Forestry UniversityBeijing 100083China School of Ecology and Nature Conservation Beijing Forestry UniversityBeijing 100083China

Understanding the drivers of variations in fine root lifespan is key to informing nutrient cycling and productivity in terrestrial ***,the general patterns and determinants of forest fine root lifespan at the global scale are still *** compiled a dataset of 421 fine root lifespan observations from 76 tree species globally to assess phylogenetic signals among species,explored relationships between fine root lifespan and biotic and abiotic factors,and quantified the relative importance of phylogeny,root system structure and functions,climatic and edaphic factors in driving global fine root lifespan ***,fine root lifespan showed a clear phylogenetic signal,with gymnosperms having a longer fine root lifespan than *** root lifespan was longer for evergreens than deciduous ***(ECM)plants had an extended fine root lifespan than arbuscular mycorrhizal(AM)*** different climatic zones,fine root lifespan was the longest in the boreal zone,while it did not vary between the temperate and tropical *** root lifespan increased with soil depth and root ***,the analysis of relative importance indicated that phylogeny was the strongest driver influencing the variation in forest fine root lifespan,followed by soil clay content,root order,mean annual temperature,and soil depth,while other environmental factors and root traits exerted weaker *** results suggest that the global pattern of fine root lifespan in forests is shaped by the interplay of phylogeny,root traits and environmental *** findings necessitate accurate representations of tree evolutionary history in earth system models to predict fine root longevity and its responses to global changes.

关键词： Fine root lifespan Trees Phylogeny Root order Soil property Climatic factors

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A Consortium Blockchain-enabled Double Auction Mechanism for Peer-to-peer Energy Trading among Prosumers

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Protection and Control of Modern Power Systems 2024年第3期9卷 82-97页

作者： Shichang Cui Shuang Xu Fei Hu Yong Zhao Jinyu Wen jinsong wang the State Key Laboratory of Advanced Electromagnetic Engineering and Technology the School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan430074China. the State Grid Hubei Electrical Power Co. Ltd.Economics Research InstituteWuhanChina. Huazhong University of Science and Technology the School of Electrical and Electronics Engineering HUST Case Western Reserve University ClevelandUSA IEEE

This paper investigates a double auction-based peer-to-peer(P2P)energy trading market for a community of renewable prosumers with private information on reservation price and quantity of energy to be traded.A novel competition padding auction(CPA)mechanism for P2P energy trading is proposed to address the budget deficit problem while holding the advantages of the widely-used Vickrey-Clarke-Groves *** illustrate the theoretical properties of the CPA mechanism,the sufficient conditions are identified for a truth-telling equilibrium with a budget surplus to exist,while further proving its asymptotical economic *** addition,the CPA mechanism is implemented through consortium blockchain smart contracts to create safer,faster,and larger P2P energy trading *** proposed mechanism is embedded into blockchain consensus protocols for high consensus efficiency,and the budget surplus of the CPA mechanism motivates the prosumers to manage the *** studies are carried out to show the effectiveness of the proposed method.

关键词： Blockchain smart contract budget double auction mechanism economic efficiency peer-to-peer energy trading prosumers

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Modification of LiMn_(0.6)Fe_(0.4)PO_(4)lithium-ion battery cathode materials with a fluorine-doped carbon coating

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Particuology 2024年第9期92卷 278-287页

作者： Debao Pan Ziyuan Liu Chengping Li Rundong Wan jinsong wang Jiangzhao Chen Ding wang Jinkun Liu Yingjie Zhang Jianhong Yi Rui Bao Zhengfu Zhang Peng Dong Faculty of Materials Science and Engineering Kunming University of Science and TechnologyKunming 650093China Faculty of Metallurgical and Energy Engineering Kunming University of Science and TechnologyKunming 650093China

In this study,glucose and NH4F were utilized as sources of carbon and fluorine,respectively,for the synthesis of LiMn_(0.6)Fe_(0.4)PO_(4)(LMFP)*** nanoscales were subsequently modified with varying levels of fluorine-doped carbon through co-precipitation and mechanical ball milling *** LMFP,incorporating carbon and varying levels of fluoride ions,exhibit higher specific discharge capacities at 0.2 Cand electrochemical characteristics compared to the original LMFP coated solely with *** inclusion of fluorine-doped carbon in the composite material creates numerous pathways for expeditious electron ***,the partial formation of metal fluoride at the interface between the surface of LMFP and the layer of carbon coating doped with fluorine enhances the reduction in the charge-transfer *** modified ferromanganese phosphate cathode material reveals an outstanding discharge capacity displaying a reversible discharge specific capacity value of 131.73 mA h g^(−1)at 10C and 154.6 mA h g^(−1)at 0.2C,due to its unique structure.

关键词： Lithium manganese iron phosphate Anode Electrochemical Fluorine-doped carbon

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Enhancing wheat regeneration and genetic transformation through overexpression of TaLAX1

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Plant Communications 2024年第5期5卷 9-24页

作者： Yang Yu Haixia Yu Jing Peng wang jinsong Yao Yi Peng wang Feng Li Zhang Shi Rong wang Yajie Zhao Xiang Yu Zhao Xian Sheng Zhang Ying Hua Su State Key Laboratory of Crop Biology College of Life SciencesShandong Agricultural UniversityTai’anShandong 271018China

In the realm of genetically transformed crops,the process of plant regeneration holds utmost ***,the low regeneration efficiency of several wheat varieties currently restricts the use of genetic transformation for gene functional analysis and improved crop *** research explores overex-pression of TaLAX PANICLE1(TaLAX1),which markedly enhances regeneration efficiency,thereby boost-ing genetic transformation and genome editing in *** noteworthy is the substantial increase in regeneration efficiency of common wheat varieties previously regarded as recalcitrant to genetic *** study shows that increased expression of TaGROWTH-REGULATING FACTOR(TaGRF)genes,alongside that of their co-factor,TaGRF-INTERACTING FACTOR 1(TaGIF1),enhances cytokinin accumulation and auxin response,which may play pivotal roles in the improved regeneration and transfor-mation of TaLAX1-overexpressing wheat *** of TaLAX1 homologs also significantly in-creases the regeneration efficiency of maize and soybean,suggesting that both monocot and dicot crops can benefit from this *** shed light on a gene that enhances wheat genetic trans-formation and elucidate molecular mechanisms that potentially underlie wheat regeneration.

关键词： plant regeneration genetic transformation TaLAX1 TaGRF4–TaGIF1 cytokinin auxin wheat

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宽光谱多传感器轴一致性检测系统设计

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光学精密工程 2024年第2期32卷 148-157页

作者：邹韵朱运东王劲松长春理工大学光电工程学院吉林长春130012 长春理工大学中山研究院广东中山528437

光轴一致性是衡量多传感器光电系统工作性能的重要指标,为了解决多传感器轴一致性检测系统工作波段范围较窄、系统灵活性较低的问题,本文结合光路切换和光热转换的思想,设计了一套宽光谱多传感器轴一致性检测系统。该系统采用卡塞格林... 详细信息

光轴一致性是衡量多传感器光电系统工作性能的重要指标,为了解决多传感器轴一致性检测系统工作波段范围较窄、系统灵活性较低的问题,本文结合光路切换和光热转换的思想,设计了一套宽光谱多传感器轴一致性检测系统。该系统采用卡塞格林反射式光学系统作为从可见光到长波红外范围内的接收和发射系统;通过步进电机的驱动,带动导轨上方反光镜位置移动,实现系统光路的切换;采用镀有硫化铜的锗玻璃,作为光热转换靶材,将短波长的光斑转换为热斑,采用长波红外探测器实现对各波段激光光斑图像采集。系统能够实现0.4~14μm波段光谱范围的检测;对光学系统进行像质评价分析,可以得到系统在不同波段下由像差引起的弥散斑(Root mean square,RMS)直径均在9μm以下,能量集中度较好;对系统检测精度进行分析,最大测量误差为0.1 mrad;通过导轨往返运动重复精度实验和系统测量准确度实验,对系统可靠性进行验证,结果表明检测系统满足仪表准确度1.5级的要求。该检测系统结构紧凑,适用波谱范围广,能够实现对多传感器光电设备的轴一致性检测。

关键词：宽光谱轴一致性光路切换光热转换硫化铜

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微光CMOS传感器调制传递函数快速测试方法

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激光与光电子学进展 2024年第12期61卷 287-293页

作者：唐卓王劲松牛群刘小华长春理工大学光电工程学院吉林长春130022 长春理工大学中山研究院广东中山528437

为满足微光CMOS图像传感器调制传递函数快速检测的需求,通过优化倾斜刃边法提出一种基于超采样模型的调制传递函数快速测试方法。测试过程采用自适应双阈值Canny边缘检测算法提高刃边检测精度,通过刃边角度空间几何旋转对边缘扩展响应... 详细信息

为满足微光CMOS图像传感器调制传递函数快速检测的需求,通过优化倾斜刃边法提出一种基于超采样模型的调制传递函数快速测试方法。测试过程采用自适应双阈值Canny边缘检测算法提高刃边检测精度,通过刃边角度空间几何旋转对边缘扩展响应进行超采样,并利用三次费米函数等效模型进行拟合,极大消除自然微光成像中噪声对测试结果的影响。利用该方法对CMOS传感器进行实际测试,采用不同目标图片测试实验结果同标准量进行对比,误差均在0.06之内,证明了该方法的可行性与有效性,符合CMOS传感器性能检测的要求。

关键词：调制传递函数微光传感器倾斜刃边法边缘超采样快速检测

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钱塘江水政辨析

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浙江水利科技 2024年第5期52卷 1-6页

作者：汪劲松浙江省钱塘江流域中心浙江杭州310016

从当代水政的现状与理念出发,梳理钱塘江水政发展脉络。法规修改、机构改革和浙江省行政执法大综合一体化改革后的跨行业衔接问题,导致钱塘江水政在一定范围内出现认识不够明晰、机制运行欠畅的现象,相关水管理机构依法履职存在一定风... 详细信息

从当代水政的现状与理念出发,梳理钱塘江水政发展脉络。法规修改、机构改革和浙江省行政执法大综合一体化改革后的跨行业衔接问题,导致钱塘江水政在一定范围内出现认识不够明晰、机制运行欠畅的现象,相关水管理机构依法履职存在一定风险。基于此问题,迫切需要厘清法规、改革与机构队伍3个维度的实质内涵与运行规范,同时就浙江特殊的“河海划界”等问题阐明成因与对策,提出解决当下钱塘江水政问题的路径。

关键词：钱塘江水政水行政许可大综合一体化改革执法监管河海划界

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二维激光跟踪转台轴系设计及动态形变误差修正

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光学精密工程 2024年第14期32卷 2200-2210页

作者：霍汉林王劲松王国名李根梓周维虎长春理工大学光电工程学院吉林长春130022 中国科学院微电子研究所北京100094 中国科学院大学北京100049 雁栖湖基础制造技术研究院(北京)有限公司北京101407

二维激光跟踪转台轴系结构的稳定性及动态形变误差补偿精度是激光跟踪仪实现高精度动态坐标测量的关键因素。为满足激光跟踪仪动态坐标测量高精度、高稳定的实际需求,本文研制了一套基于过定位双角接触轴承对轴系的二维转台。首先,基于... 详细信息

二维激光跟踪转台轴系结构的稳定性及动态形变误差补偿精度是激光跟踪仪实现高精度动态坐标测量的关键因素。为满足激光跟踪仪动态坐标测量高精度、高稳定的实际需求,本文研制了一套基于过定位双角接触轴承对轴系的二维转台。首先,基于转台性能指标要求开展二维转台轴系设计及精度分析;然后,基于所设计结构及现有装配工艺,结合弹性力学理论,开展转台动态形变误差形成机理分析,并通过刚柔耦合动力学仿真分析验证理论分析合理性。最后,提出基于共轭差动式光学自准直原理的轴系动态误差测量方法,完成对轴系稳定性和动态形变误差的测量补偿。实验结果表明:转台的动态形变误差重复性优于±0.6″,动态形变误差由补偿前的±7″降低为±1″,转台设计的稳定性和动态形变误差补偿精度满足设计需求。

关键词：激光跟踪仪二维激光跟踪转台轴系精度动态形变误差光学自准直

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细节保留与亮度融合的微光图像增强算法

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红外技术 2024年第10期46卷 1162-1171页

作者：牛群石利霞王劲松唐卓长春理工大学光电工程学院吉林长春130012 长春理工大学中山研究院广东中山528437

微光环境下CMOS相机拍摄的图像存在对比度低、噪声大和细节模糊等问题,目前的增强算法虽然可以提升图像亮度,却没有考虑保留原始图像的细节信息,为此,本文提出了一种细节保留的微光图像增强方法。首先,使用自适应滤波器对原始微光图像... 详细信息

微光环境下CMOS相机拍摄的图像存在对比度低、噪声大和细节模糊等问题,目前的增强算法虽然可以提升图像亮度,却没有考虑保留原始图像的细节信息,为此,本文提出了一种细节保留的微光图像增强方法。首先,使用自适应滤波器对原始微光图像中的每个通道进行处理,以改善噪声对图像的影响。然后,通过滤波后的图像得到细节层和基本层,其中细节层用于保留图像的纹理,基本层则用于增强图像的亮度。细节层的求取通过粗照度和光照分量得到,而基本层亮度增强则使用Alpha算法融合原图、伽马校正结果和伽马先验校正结果得到。最后,将细节层和基本层的亮度通道进行融合,以获得增强后的图像。实验结果表明,经过细节融合处理后的图像,其平均梯度与信息熵均实现了显著提升。此外,与选取的5种方法相比,SSIM指标均高于其他算法,表明本文方法增强后的图像失真小。同时,在BRISQUE和PSNR指标上均取得了较好的效果。

关键词：噪声抑制细节求取图像融合微光图像

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