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| 1 | High valence metals engineering strategies of Fe/Co/Ni-based catalysts for boosted OER electrocatalysis显示文摘Electrocatalysis for the oxygen evolution reactions(OER)has attracted much attention due to its important role in water splitting and rechargeable metal-air batteries.Therefore,designing highly efficient and low-cost catalysts for OER process is essential as the conventional catalysts still rely on precious metals.Transition metal-based compounds have been widely investigated as active OER catalysts,and renewed interest in the high valence metals engineered compounds has been achieved for superior catalytic activity and stability.However,an in-depth understanding of the construction strategies and induced effects for the high valence metals engineered catalysts is still lacking and desired.In this review,we have summarized the construction strategies of high valence metals as dopants or formed heterostructures with the iron/cobalt/nickel(Fe/Co/Ni)-based catalysts.Then the induced effects on Fe/Co/Ni-based catalysts by incorporating high valence metals,e.g.,accelerating the surface reconstruction,forming amorphous structure,generating vacancies/defects,and acting as stabilizers,are highlighted.The impacts of high valence metals on OER performance are elucidated based on different elements,including molybdenum(Mo),tungsten(W),cerium(Ce),vanadium(V),chromium(Cr),manganese(Mn),niobium(Nb),zirconium(Zr).The correlations of construction strategies,induced effects,catalytic activity and OER reaction pathways are elaborated.Finally,the remaining challenges for further enhancements of OER performance induced by high valence metals are presented. | Lu Li Xianjun Cao Juanjuan Huo Junpeng Qu Weihua Chen Chuntai Liu Yufei Zhao Hao Liu Guoxiu Wang | 2023 | Journal of Energy Chemistry2023，，1： | 3 |
| 2 | GRU-Based Fault Diagnosis Method for Ball Mill显示文摘Recently, the fault diagnosis of the ball mill mostly depends on the experience of workers, which brings about a lot of uncertainty for fault diagnosis. In addition, the cost of labor is getting higher, so that the research of ball mill fault diagnosis based on machine learning has become increasingly valuable. The current fault diagnosis methods are mostly judging based on instantaneous data, which makes it difficult to reflect the ball mill indicators and the occurrence of time-related correlation(such as hysteresis effect). This paper presents a ball mill fault diagnosis method based on Gate Recursion Unit(GRU),which analyzes the fault data in the form of time series and compares with other common methods such as neural network, Autoencoder and Long Short-Term Memory(LSTM). After comparison,it is concluded that the fault diagnosis method based on GRU ball mill has the lowest error rate as 4.85%. | QU Xingyu ZENG Peng LI Junpeng | 2018 | Instrumentation2018，5，4： | 2 |
| 3 | Electrochemical Carbon Dioxide Reduction to Ethylene:From Mechanistic Understanding to Catalyst Surface Engineering显示文摘Electrochemical carbon dioxide reduction reaction(CO_(2)RR)provides a promising way to convert CO_(2)to chemicals.The multicarbon(C_(2+))products,especially ethylene,are of great interest due to their versatile industrial applications.However,selectively reducing CO_(2)to ethylene is still challenging as the additional energy required for the C–C coupling step results in large overpotential and many competing products.Nonetheless,mechanistic understanding of the key steps and preferred reaction pathways/conditions,as well as rational design of novel catalysts for ethylene production have been regarded as promising approaches to achieving the highly efficient and selective CO_(2)RR.In this review,we first illustrate the key steps for CO_(2)RR to ethylene(e.g.,CO_(2)adsorption/activation,formation of~*CO intermediate,C–C coupling step),offering mechanistic understanding of CO_(2)RR conversion to ethylene.Then the alternative reaction pathways and conditions for the formation of ethylene and competitive products(C_1 and other C_(2+)products)are investigated,guiding the further design and development of preferred conditions for ethylene generation.Engineering strategies of Cu-based catalysts for CO_(2)RR-ethylene are further summarized,and the correlations of reaction mechanism/pathways,engineering strategies and selectivity are elaborated.Finally,major challenges and perspectives in the research area of CO_(2)RR are proposed for future development and practical applications. | Junpeng Qu Xianjun Cao Li Gao Jiayi Li Lu Li Yuhan Xie Yufei Zhao Jinqiang Zhang Minghong Wu Hao Liu | 2023 | Nano-Micro Letters2023，15，10： | 1 |
| 4 | Scanless multitarget-matching multiphoton excitation fluorescence microscopy显示文摘Using the combination of a refective blazed grating and a reflective phase-only difractive spatiallight modulator(SLM),scanless multitarget-matching multiphoton excitation fuorescence mi.croscopy(SMTM-MP M)was achieved.The SLM shaped an incoming mode-locked,near-infraredTi:sapphire laser beam into an excitation pattern with addressable shapes and sizes that matchedthe samples of interest in the field of view.Temporal and spatial focusing were simultaneouslyrealized by combining an objective lens and a blazed grating.The fluorescence signal fromilluminated areas was recorded by a two-dimensional sCMOS camera.Compared with a conventional temporal focusing multiphoton microscope,our microscope achieved effective use of thelaser power and decreased photodamage with higher axial resolution. | Junpeng Qiu Lei Wang Bruce Zhi Gao Junle Qu Yonghong Shao | 2018 | Journal of Innovative Optical Health Sciences2018，，2： | 0 |
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