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| 1 | Electrolyte materials for intermediate-temperature solid oxide fuel cells显示文摘Solid oxide fuel cells(SOFCs)directly convert chemical energy that is stored in a wide range of fuels into direct current electricity,with high efficiency and low emissions,via a series of electrochemical reactions at elevated operating temperatures(generally 400-1000℃).During such an energy conversion process,the properties of electrolyte materials determine the working principle and operating temperature of the SOFC.When considering the cost and stability,lowering the operating temperature is critical,and this has become one of the developing trends in SOFC research.The key point for realizing a reduction in operating temperature is to maintain low ohmic resistance of the electrolyte and low polarization resistance of the electrodes.In practice,the mechanical and chemical stability of the electrolyte is also a big concern.According to their differences in ion conduction mechanisms,there are three main types of electrolyte material available,namely,oxygen ion-conducting,proton-conducting,and dual ion-conducting electrolytes.In this review,we give a comprehensive summary of the recent advances in the development of these three types of electrolyte material for intermediate-temperature SOFCs.Both conductivity and stability are emphasized.In conclusion,the current challenges and future development prospects are discussed. | Huangang Shi Chao Su Ran Ran Jiafeng Cao Zongping Shao | 2020 | Progress in Natural Science:Materials International2020，30，6： | 12 |
| 2 | Recent advances and perspectives of fluorite and perovskite-based dual-ion conducting solid oxide fuel cells显示文摘High-temperature solid-state electrolyte is a key component of several important electrochemical devices,such as oxygen sensors for automobile exhaust control,solid oxide fuel cells(SOFCs) for power generation,and solid oxide electrolysis cells for H_(2) production from water electrolysis or CO_(2) electrochemical reduction to value-added chemicals.In particular,internal diffusion of protons or oxygen ions is a fundamental and crucial issue in the research of SOFCs,hypothetically based on either oxygen-ionconducting electrolytes or proton-conducting electrolytes.Up to now,some electrolyte materials based on fluorite or perovskite structure were found to show certain degree of dual-ion transportation capability,while in available electrolyte database,particularly in the field of SOFCs,such dual-ion conductivity was seriously overlooked.Actually,few concerns arising to the simultaneous proton and oxygen-ion conductivities in electrolyte of SOFCs inevitably induce various inadequate and confusing results in literature.Understanding dual-ion transportation behavior in electrolyte is indisputably of great importance to explain some unusual fuel cell performance as reported in literature and enrich the knowledge of solid state ionics.On the other hand,exploration of novel dual-ion conducting electrolytes will benefit the development of SOFCs.In this review,we provide a comprehensive summary of the understanding of dual-ion transportation in solid electrolyte and recent advances of dual-ion conducting SOFCs.The oxygen ion and proton conduction mechanisms at elevated temperature inside oxide-based electrolyte materials are first introduced,and then(mixed) oxygen ion and proton conduction behaviors of fluorite and perovskite-type oxides are discussed.Following on,recent advances in the development of dual-ion conducting SOFCs based on fluorite and perovskite-type single-phase or composite electrolytes,are reviewed.Finally,the challenges in the development of dual-ion conducting SOFCs are discussed and future prospects are proposed. | Jiafeng Cao Chao Su Yuexia Ji Guangming Yang Zongping Shao | 2021 | Journal of Energy Chemistry2021，30，6： | 5 |
| 3 | Effective regeneration of high-performance anode material recycled from the whole electrodes in spent lithium-ion batteries via a simplified approach显示文摘Along with the extensive application of energy storage devices,the spent lithium-ion batteries(LIBs)are unquestionably classified into the secondary resources due to its high content of several valuable metals.However,current recycling methods have the main drawback to their tedious process,especially the purification and separation process.Herein,we propose a simplified process to recycle both cathode(LiCoO_(2))and anode(graphite)in the spent LIBs and regenerate newly high-performance anode material,CoO/CoFe2O4/expanded graphite(EG).This process not only has the advantages of succinct procedure and easy control of reaction conditions,but also effectively separates and recycles lithium from transition metals.The 98.43%of lithium is recovered from leachate when the solid product CoO/CoFe2O4/EG is synthesized as anode material for LIBs.And the product exhibits improved cyclic stability(890 mAh g^(-1) at 1 A g^(-1) after 700 cycles)and superior rate capability(208 mAh g^(-1) at 5 A g^(-1)).The merit of this delicate recycling design can be summarized as three aspects:the utilization of Fe impurity in waste LiCoO_(2),the transformation of waste graphite to EG,and the regeneration of anode material.This approach properly recycles the valuable components of spent LIBs,which introduces an insight into the future recycling. | Long Ye Chunhui Wang Liang Cao Hougui Xiao Jiafeng Zhang Bao Zhang Xing Ou | 2021 | Green Energy & Environment2021，6，5： | 3 |
| 4 | Implementation of heat exchanger performance testing system of heat transfer and flow resist- ance显示文摘 | Ruibing Cao Yaping Chen Jiafeng Wu | 2012 | Journal of Southeast University2012，28，1： | 1 |
| 5 | Motion Characteristics of the Appendages of Mole Crickets during Burrowing显示文摘Mole crickets,Gryllotalpa orientalis,have a pair of fully specialized forelegs for burrowing and employ an efficient underground excavating pattern,which provides excellent biological example for design of bionic underground excavation equipment.In this study,the excavating pattern and kinematic features of mole crickets were obtained by using high-speed motion capture system and employing a transparent hydrogel as the analogue for soil.The two-dimensional motion characteristics of the forelegs of mole crickets during burrowing were captured and analyzed.The results show that the forelegs of the mole cricket employ a unique excavating pattern,which consists of foreword digging and horizontal expansion.We label this pattern a digging-expanding mode.An excavating cycle includes the digging and expanding motion of the forelegs,rotation caused by the midlegs and hindlegs,and forward thrust by the hindlegs.The excavating motion of the left and right forelegs is alternately carried out.This study can inspire the design of bionic tunnelling mechanisms and underground excavation equipment. | Yan Zhang Jiafeng Cao Qi Wang Pengfei Wang Yueying Zhu Junxia Zhang | 2019 | Journal of Bionic Engineering2019，16，2： | 1 |
| 6 | Van der Waals heterostructure engineering by 2D space-confinement for advanced potassium-ion storage显示文摘Molybdenum disulfide (MoS_(2)) has received enormous attentions in the electrochemical energy storage due to its unique two-dimensional layered structure and relatively high reversible capacity. However, the application of MoS_(2) in potassium-ion batteries (PIBs) is restricted by poor rate capability and cyclability, which are associated with the sluggish reaction kinetics and the huge volume expansion during K+ intercalation. Herein, we propose a two-dimensional (2D) space confined strategy to construct van der Waals heterostructure for superior PIB anode, in which the MoS_(2) nanosheets can be well dispersed on reduced graphene oxide nanosheets by leveraging the confinement effect within the graphene layers and amorphous carbon. The strong synergistic effects in 2D van der Waals heterostructure can extremely promote the electron transportation and ions diffusion during K+ insertion/extraction. More significantly, the 2D space-confinement effect and van der Waals force inhibit polysulfide conversion product dissolution into the electrolyte, which significantly strengthens the structural durability during the long-term cycling process. As anticipated, the as-synthesized the “face-to-face” C/MoS_(2)/G anode delivers remarkable K-storage performance, especially for high reversible capacity (362.5 mAh·g^(-1) at 0.1 A·g^(-1)), excellent rate capability (195.4 mAh·g^(-1) at 10 Ag^(-1)) and superior ultrahigh-rate long-cycling stability (126.4 mAh·g^(-1) after 4000 cycles at high rate of 5 A·g^(-1)). This work presents a promise strategy of structure designing and composition optimization for 2D layered materials in advanced energy storage application. | Bi Luo Peng Wu Jiafeng Zhang Liang Cao Chunhui Wang Bin Lu Bao Zhang Xing Ou | 2021 | Nano Research2021，14，11： | 0 |
| 7 | Expert Consensus on Nutritional Support for Children with Congenital Heart Disease(2023 Edition)显示文摘The second edition of the expert consensus on pediatric nutrition was formed based on a global update of pedia-tric nutrition guidelines or consensus worldwide,the management of congenital heart disease,and the results of multi-center clinical nutrition research for congenital heart disease following thefirst Chinese consensus edition of 2016.The consensus was also shaped by the results of three discussion sessions and two questionnaires con-ducted by the 13-member collaboration group.This process was informed by both clinical guidelines and expert consensus.The quality of literature,both in English and Chinese,and the level of recommendations were evaluated using the Grading of Recommendations Assessment,Development,and Evaluations(GRADE)system. | Xuming Mo Wei Cai Jirong Qi Zhuoming Xu Ying Wang Weihui Yan Shoujun Li Nianguo Dong Xinxin Chen Jinfen Liu Qiang Shu Jimei Chen Haibo Zhang Hao Zhang Quansheng Xing Qi An Xiaofeng Li Xu Wang Yan He Junwu Su Taibing Fan Teng Ming Weibing Tang Li Hong Jinghao Zheng Ming Ye Guocheng Sun Yiqun Ding Liang Tao Yifeng Yang Zhongshi Wu Hua Cao Qiang Wang Keming Yang Libing Zhang Ping Wen Yanqin Cui Bo Zhai Yong Zou Qingya Tang Rui Chen Chun Wu Zhiyu Feng Caixia Liu Yaping Mi Rufang Zhang Ke Lin Xin Li Mingan Pi Xiangming Fan Shanshan Shi Peng Huang Zhengxia Pan Jiafeng Qi Renwei Chen Shuguang Tao Yaqin Shu Huifeng Zhang Lan Jiang Min Da Nishant Patel Liang Hu Cardiac Surgery Group of Pediatric Surgery Society of Chinese Medical Association and Parenteral Enteral Nutrition Society of Chinese Medical Association | 2023 | Congenital Heart Disease2023，18，6： | 0 |
| 8 | Dehydro-Diels-Alder reaction and diamondization of bowl-shaped clusters C_(18)Te_(3)Br_(4)(Bu-O)_(6)显示文摘Dehydro-Diels-Alder(DDA)reaction is a textbook reaction for preparing six-membered rings in solution but is scarcely seen in solid-state synthesis.In this work,using multiple characterization techniques,we demonstrate that the bowl-shaped clusters C_(18)Te_(3)Br_(4)(Bu-O)_(6) might experience a DDA reaction at room temperature and high pressure between 5.5 and 7.4 GPa.Above 17.0 GPa,it is found that the bonding conversion from the intramolecular sp^(2) to the intermolecular spa occurred,in the form of pressure-induced diamondization.The recovered samples from 20.0 and 36.1 GPa showed incomplete reversibility,while the decompression-induced graphitization of glassy carbon was observed during decompression from 46.5 GPa.The electrochemical impedance spectroscopy results indicated that the transport properties changed from grain boundary dominant to grain dominant due to the DDA reaction and the grain boundary effect disappeared as the intermolecular sp3 bonding building-up and carrier transmission channel formation above 17.0 GPa.The results in this study open a new route to construct the crystalline carbon materials with different transport properties. | Jinbo Zhang Manli Ma Rong Zhou Hongqiang Chu Xue Wang Shaojie Wang Huhu Tian Zhipeng Yan Mingtao Li Zhongyan Wu Bin Li Jiafeng Yan Lan Anh Thi Nguyen Rongxing Cao Guoqing Wu Xianghua Zeng Hao-Li Zhang Jaeyong Kim Lin Wang Yongjun Tian | 2022 | Nano Research2022，15，5： | 0 |
| 9 | Analytical and experimental study of a valveless piezoelectric micropump with high flowrate and pressure load显示文摘Miniaturized gas pumps based on electromagnetic effect have been intensively studied and widely applied in industries.However,the electromagnetic effect-based gas pumps normally have large sizes,high levels of noises and high power consumption,thus they are not suitable for wearable/portable applications.Herein,we propose a high-flowrate and high-pressure load valveless piezoelectric micropump with dimensions of 16 mm*16 mm*5 mm.The working frequency,vibration mode and displacement of the piezoelectric actuator,the velocity of gas flow,and the volume flowrate of the micropump are analyzed using the finite element analysis method.The maximum vibration amplitude of the piezoelectric actuator reaches~29.4μm.The output gas flowrate of the pump is approximately 135 mL/min,and the maximum output pressure exceeds 40 kPa.Then,a prototype of the piezoelectric micropump is fabricated.Results show that performance of the micropump is highly consistent with the numerical analysis with a high flowrate and pressure load,demonstrated its great potential for wearable/portable applications,especially for blood pressure monitoring. | Jiafeng Ni Weipeng Xuan Yilin Li Jinkai Chen Wenjun Li Zhen Cao Shurong Dong Hao Jin Lingling Sun Jikui Luo | 2023 | Microsystems & Nanoengineering2023，9，3： | 0 |
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