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Multi boron-doping effects in hard carbon toward enhanced sodium ion storage

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Journal of Energy Chemistry 2025年第1期100卷 730-738页

作者： Peng zheng Wang Zhou Ying Mo Biao zheng Miaomiao Han Qin Zhong Wenwen yang Peng Gao Lezhi yang Jilei Liu College of Materials Science and Engineering Hunan Joint International Laboratory of Advanced Materials and Technology for Clean Energy Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology Hunan University Greater Bay Area Institute for Innovation Hunan University Changsha Research Institute of Mining & Metallurgy Co. LTD.

Hard carbon （HC） has been considered as promising anode material for sodium-ion batteries （SIBs）.The optimization of hard carbon’s microstructure and solid electrolyte interface （SEI） property are demonstrated effective in enhancing the Na+storage capability,however,a one-step regulation strategy to achieve simultaneous multi-scale structures optimization is highly ***,we have systematically investigated the effects of boron doping on hard carbon’s microstructure and interface chemistry.A variety of structure characterizations show that appropriate amount of boron doping can increase the size of closed pores via rearrangement of carbon layers with improved graphitization degree,which provides more Na+storage ***-situ Fourier transform infrared spectroscopy/electrochemical impedance spectroscopy （FTIR/EIS） and X-ray photoelectron spectroscopy （XPS） analysis demonstrate the presence of more BC3and less B–C–O structures that result in enhanced ion diffusion kinetics and the formation of inorganic rich and robust SEI,which leads to facilitated charge transfer and excellent rate *** a result,the hard carbon anode with optimized boron doping content exhibits enhanced rate and cycling *** general,this work unravels the critical role of boron doping in optimizing the pore structure,interface chemistry and diffusion kinetics of hard carbon,which enables rational design of sodium-ion battery anode with enhanced Na+storage performance.

关键词： X ray photoelectron spectroscopy

The role of the rigid bronchoscopy in the diagnosis/therapy in 13 pediatric cases with plastic bronchitis

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The role of the rigid bronchoscopy in the diagnosis/therapy ...

Demand-Side Response of Smart Clients under Real-time Pricing

中华医学会第十四次全国儿科学术会议

作者： Guangzhou Medical College, PRC, Guangzhou (510120) Qiyi zeng Dabo Liu Yilang zheng Yiyu yang Huasong zeng

Objective To review the prevalence, clinical feature and the role of rigid bronchoscopy in the diagnosis/thearapy of of pediatiric plastic bronchitis. Methods The medical records of 13 Pediatric cases with acute chest syndrome who underwent rigid bronchoscopy, hospital admission note, bronchoscopy report, imaging studies, pathological results were reviewed in Guangzhou Children’ s hospital over the four years (May 2004 - April 2005) .Results In this 13 cases, there were 3 instances second to nephrotic syndrome, diabetes type I and hemoptysis, the others are original. Five of the 13 patients were female, 8 were *** patients ages range from 3 months to 10 years. All the patients presented with fever, coughand gradually respiratory distress, had pulmonary consolidation shown on chest radiograph/CT, underwent improved rigid bronchoscopy.5 cases needed mechamical *** 7 episodes, the operative findings were tree - like bronchial cast, which were described as white, grey, yellow rubbery cast branching into the *** other fimdings were pieces of bronchial casts. After obtaining the, The bronchus were repeated flushing by using 0.9% saline and 1/30.00 epinephrine saline until the casts pieces were cleared via the suction *** improved rigid brochoscopy was used in the *** new device added oxygen channel to common instrunent, which can improve the oxygcnation during the operation. Pathological examination of the cast reveal bronchial epitheial cell, frious materials and inflammatory cells. Conclusion Plastic bronchitis is a kind of severe a-cute chest syndrome. the rigid bronchoscopy is an essential tool in the diagnosis and therapy of this condition infuture, it is nessessary to do multi - center clinical study to get more experience on the rote of the rigid bronchoscopy in the diagnosis/therapy of this comdition.

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Demand-Side Response of Smart Clients under Real-time Pricin...

Physarum polycephalum-inspired adaptive optimization design of artificial microtubular networks

第26届中国控制与决策会议

作者： Wei-hui SHAO Wei-sheng XU Zhi-yu XU zheng-yang zeng School of Electronics and Information Engineering Tongji University

Electric power market will transform to the free market based on real-time pricing and the traditional clients will change to smart clients with the development of Smart Grid. A smart client model which includes general loads, energy storage devices, electric vehicles and distributed generations is developed in this paper to study the demand-side response under real-time pricing. MSND algorithm is used to search the optimal strategies. Computational tests on the real data show that the proposed model is reasonable and MSND algorithm is both efficient and effective.

关键词： Smart Client Real-time Pricing Demand-side Response MSVND Algorithm

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Science China Chemistry 2025年

作者： Si-Min zeng Di-Wei zheng Ting Pan Xing-Lan Ding Yun Zhang Chi-Hui yang Si-Xue Cheng Xian-zheng Zhang Key Laboratory of Biomedical Polymers of Ministry of Education&Department of Chemistry Wuhan University

Natural biological microtubular networks have undergone adaptive evolutionary selection and may offer viable solutions to design challenges in artificial microtubular networks. The plasmodium of the slime mold Physarum polycephalum(P. polycephalum) extends continuously to form a protoplasmic microtubular network structure, directly connecting food *** simulations revealed that the formation of this adaptive P. polycephalum microtubular network could be captured by a mathematical algorithm. Inspired by the P. polycephalum microtubular networks, we propose an adaptive optimization design method for artificial microtubular networks. Specifically, we utilized hydrogels with biodegradable and tissue-adhesive properties to replicate the P. polycephalum microtubular networks via photomask. In Rhodamine B diffusion and glucosecatalyzed reaction experiments, we found that the P. polycephalum microtubular networks exhibited significantly enhanced efficiency compared to vascular and artificial networks. Furthermore, we demonstrated the potential for uric acid(UA) degradation of the hydrogels with a real P. polycephalum microtubular network loaded with urate oxidase(UOx) in a rodent model of hyperuricemia. And this network achieved more than double the effect of the artificial network. This underscores the potential of natural microtubular networks to replace artificial microtubular networks.

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羟基磷灰石/氧化锆复合涂层热稳定性和结合强度的研究

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无机化学学报 2005年第7期21卷 965-970页

作者：肖秀峰刘榕芳郑炀曾燕山大学亚稳材料制备技术与科学重点实验室材料科学与工程学院秦皇岛066004 福建师范大学化学与材料学院福州350007

为了提高羟基磷灰石(hydroxyapatite,HA)涂层的结合强度,采用水热电沉积法在HA涂层中引入第二相颗粒氧化锆(ZrO2)制备HA/ZrO2复合涂层,研究了ZrO2晶型对涂层表面形貌、相组成、热稳定性和涂层结合强度的影响。实验结果表明,ZrO2的复合... 详细信息

为了提高羟基磷灰石(hydroxyapatite,HA)涂层的结合强度,采用水热电沉积法在HA涂层中引入第二相颗粒氧化锆(ZrO2)制备HA/ZrO2复合涂层,研究了ZrO2晶型对涂层表面形貌、相组成、热稳定性和涂层结合强度的影响。实验结果表明,ZrO2的复合减小了HA晶体尺寸,但不影响HA水热电沉积的机理;1200℃热处理后,HA分解生成的CaO和ZrO2形成固溶体,使单斜晶型(m-ZrO2)和四方晶型(t-ZrO2)的ZrO2转变为立方晶型的的ZrO2(c-ZrO2),并促进HA的完全分解;HA/ZrO2复合涂层的结合强度明显高于纯HA涂层的结合强度,且随涂层中ZrO2含量增大和热处理温度的升高而增大。1000℃热处理后,HA/ZrO2复合涂层既有较高的结合强度,又可获得对骨生长有利的HA+β-Ca3(PO4)2(β-TCP)双相结构。

关键词：结合强度羟基磷灰石复合涂层热稳定性氧化锆 ZrO2 HA涂层第二相颗粒热处理温度电沉积法表面形貌晶体尺寸立方晶型 O2含量双相结构相组成固溶体 CaO A分解骨生长水热增大

Synergistic promotion strategy of “dual-site” and “dual-path” to enhance the C–C coupling between CO2 and HCHO driven by photoelectrocatalysis

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Journal of Energy Chemistry 2025年第1期100卷 39-49页

作者： Hongqiang yang Jianfeng zheng Guoyu Wang Yifei Gao Yatao yang Jia Li Xiaojin Han Yan Cui Zhanggen Huang National Key Laboratory of High Efficiency and Low Carbon Utilization of Coal Institute of Coal Chemistry Chinese Academy of Science University of Chinese Academy of Science Shenyang University of Chemical Technology

Photoelectrocatalytic coupling CO2and volatile organic compounds （VOCs） is a promising green strategy for the synergistic conversion of the two carbon-containing resources to *** catalytic efficiency is always at the mercy of chemical inertness of CO2and the competitive hydrogen evolution of ***,a modified g-C3N4/ZnAl-LDH Z-scheme heterojunction catalyst with dual reaction site was rationally designed and precisely *** Faraday efficiency of ethanol reached 68.67%with a corresponding formation rate of 227.3μmol *** revealed by in-situ characterizations and density functional theory calculations,CO2and HCHO were absorbed at Zn site and N site,***,*CO generated from CO2and HCHO was converted to*CH3O and*CHO on the dual-active-site *** detailed reaction mechanism experiments indicated that C–C coupling only occurred between*CO and*CH3O in electrocatalysis *** from the“*CO+*CH3O”path,another“*CO+*CHO”coupling path was also detected in photoelectrocatalytic *** selectivity of ethanol was significantly enhanced due to the synthesis of dual-site catalyst and the dual-path coupling path between CO2and HCHO simultaneously driven by light and electricity.

关键词： Ethanol

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辙叉用含钨铝贝氏体钢的热处理及其应用

材料热处理学报 2009年第2期30卷 63-66,84页

作者：郑春雷吕博张福成张明郑炀曾燕山大学亚稳材料制备技术与科学重点实验室河北秦皇岛066004

将商业辙叉用贝氏体钢中的钼用钨代替,部分硅用铝替代,开发了含钨铝辙叉用贝氏体钢,通过对其进行热处理,确定了合理的热处理工艺:辙叉用贝氏体钢锻造后进行去氢热处理,再经900℃正火和350℃回火处理。含钨铝贝氏体钢的力学性能得到大幅... 详细信息

将商业辙叉用贝氏体钢中的钼用钨代替,部分硅用铝替代,开发了含钨铝辙叉用贝氏体钢,通过对其进行热处理,确定了合理的热处理工艺:辙叉用贝氏体钢锻造后进行去氢热处理,再经900℃正火和350℃回火处理。含钨铝贝氏体钢的力学性能得到大幅度提高,并且较商业含钼贝氏体钢具有较低的氢脆敏感性。含钨铝贝氏体钢辙叉的预期寿命和使用安全稳定性能要高于商业含钼贝氏体钢辙叉。

关键词：铁路辙叉氢脆贝氏体钢热处理

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电渣重熔对奥氏体钢低温韧性的影响

钢铁研究学报 2001年第3期13卷 68-70页

作者：李慧张静武郑炀曾燕山大学材料与化工学院河北秦皇岛066004

测定了 77K下 2 2 Mn- 13Cr- 5 Ni- 0 .2 5 N奥氏体钢电渣重熔前后的冲击韧性、氢含量及夹杂物含量 ,并利用扫描电子显微镜和透射电子显微镜研究了电渣重熔对该钢低温韧性的影响。结果表明 :电渣重熔使钢中氢和夹杂物含量显著下降 ,有... 详细信息

测定了 77K下 2 2 Mn- 13Cr- 5 Ni- 0 .2 5 N奥氏体钢电渣重熔前后的冲击韧性、氢含量及夹杂物含量 ,并利用扫描电子显微镜和透射电子显微镜研究了电渣重熔对该钢低温韧性的影响。结果表明 :电渣重熔使钢中氢和夹杂物含量显著下降 ,有利于抑制 γ→ ε转变 ,减小应力集中。

关键词：电渣重熔奥氏体钢低温韧性核反应堆

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辙叉用贝氏体钢的氢脆特性及去氢退火工艺

材料热处理学报 2008年第2期29卷 71-75页

作者：郑春雷张福成吕博王天生郑炀曾燕山大学亚稳材料制备技术与科学重点实验室河北秦皇岛066004

根据氢在铁中的溶解度以及扩散行为,制定了辙叉用贝氏体钢的去氢退火工艺。通过慢应变速率拉伸试验研究了辙叉用贝氏体钢的临界氢含量和氢脆敏感性。研究结果表明,通过去氢退火使试验用钢的组织得到细化,塑性和韧度得到大幅度提高。含W... 详细信息

根据氢在铁中的溶解度以及扩散行为,制定了辙叉用贝氏体钢的去氢退火工艺。通过慢应变速率拉伸试验研究了辙叉用贝氏体钢的临界氢含量和氢脆敏感性。研究结果表明,通过去氢退火使试验用钢的组织得到细化,塑性和韧度得到大幅度提高。含W贝氏体钢的氢含量由1.2×10-4%降低到0.5×10-4%,低于该钢发生氢脆的临界氢含量0.7×10-4%。含Mo贝氏体钢氢含量由1.6×10-4%降低到0.4×10-4%,低于此种钢发生氢脆的临界氢含量0.6×10-4%。含W钢比含Mo钢的氢脆敏感性低。

关键词：铁路辙叉去氢退火贝氏体钢