International Journal of Hydrogen Energy最新文献

{"title":"Electrochemical and thermodynamic analysis of alkaline water electrolysis: Design and performance optimization","authors":"Siddique Mohd Umair ,&nbsp;Emad Elnajjar ,&nbsp;Bassam A. Abu-Nabah ,&nbsp;Mohammad O. Hamdan","doi":"10.1016/j.ijhydene.2025.04.270","DOIUrl":"10.1016/j.ijhydene.2025.04.270","url":null,"abstract":"<div><div>This study employs an electrochemical thermodynamic model to analyze the performance of an alkaline water electrolysis (AWE) system. The model is numerically solved using MATLAB to investigate the effects of key design parameters, including electrode thickness, electrode porosity, electrolyte concentration, electrode spacing, membrane thickness, and membrane porosity. Additionally, the study examines the influence of operating conditions such as temperature and pressure. A comparative analysis is conducted on the second-law efficiency of two high-pressure hydrogen production systems utilizing AWE: one integrating a high-pressure feed pump with AWE, and the other combining AWE with a high-pressure compressor. The results highlight the critical role of ohmic electrode resistance in cell performance, emphasizing the need for accurate modeling based on cell and electrode design. Notably, very thin or highly porous electrodes exhibit high ohmic resistance, leading to reduced AWE cell efficiency. Based on second-law efficiency analysis, the feed pump-coupled AWE system outperforms the AWE-compressor system across the pressure range of 0–100 bar, at an inlet temperature of 60 °C and a current density of 0.6 A/cm².</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"128 ","pages":"Pages 643-655"},"PeriodicalIF":8.1,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143847718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of hydrogen embrittlement on the fatigue behaviour of 316L stainless steel welded joints","authors":"M. António ,&nbsp;J.S. Jesus ,&nbsp;L. Vilhena ,&nbsp;L.P. Borrego ,&nbsp;R. Branco ,&nbsp;E.L. Silva ,&nbsp;J.A.M. Ferreira","doi":"10.1016/j.ijhydene.2025.04.279","DOIUrl":"10.1016/j.ijhydene.2025.04.279","url":null,"abstract":"<div><div>Hydrogen embrittlement (HE) is a critical issue affecting the structural integrity of materials, including welded joints, used in hydrogen storage and transportation. In this study, the influence of HE on the fatigue behavior of 316L austenitic stainless-steel welded joints was investigated. Tensile and fatigue tests were performed on base material, welded joints, and hydrogen-charged welded joints to assess the degradation in their mechanical properties. The results revealed that welding significantly reduced the fatigue strength of the material, and the presence of hydrogen further intensified this effect. Microstructural analysis confirmed the formation of austenitic-ferritic duplex microstructures in the weld bead, with delta ferrite improving resistance to hot cracking but increasing susceptibility to HE. Fractographic examination of weld beads exposed to hydrogen charging showed characteristic hydrogen-induced cracking.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"128 ","pages":"Pages 534-543"},"PeriodicalIF":8.1,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143843439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydrogen production from ammonia: Preliminary design of portable cracking system and related micro-channel reactor","authors":"Dong Ho Nguyen ,&nbsp;Phu Quoc Nguyen ,&nbsp;Sang Moon Kim ,&nbsp;Ji Hoon Kim ,&nbsp;Gyu Hyeon Shim ,&nbsp;Ho Seon Ahn","doi":"10.1016/j.ijhydene.2025.04.241","DOIUrl":"10.1016/j.ijhydene.2025.04.241","url":null,"abstract":"<div><div>This study introduces an innovative and energy-efficient portable ammonia decomposition system designed for mobile applications. Key features include: (1) a capillary tube that utilizes ambient heat to evaporate liquid ammonia, reducing energy consumption by 7.7 %; (2) a plate heat exchanger that recovers heat from reactor products to preheat the ammonia feed, cutting reactor heating energy by 8.7 %; and (3) a microchannel reactor with Joule heating, which significantly lowers thermal resistance compared to conventional combustion methods. Heat balance analysis shows that heating power accounts for approximately 47 % of total generated electricity during startup and 38.9 % during steady operation. In addition, this work presents the first integration of microchannel technology with Joule heating for ammonia decomposition. A 3D model, developed in COMSOL Multiphysics 6.1, explores the effects of heating power, catalyst thickness, channel length, and hydraulic diameter on reactor performance. Results reveal that the system operates under reaction-controlled conditions (Damköhler number &lt;0.1), making heating power the most influential factor for ammonia conversion. Mass transfer is sufficiently rapid, limiting the impact of catalyst layer thickness, channel length, and hydraulic diameter on conversion but significantly affecting pressure drop. Moreover, to optimize reactor performance, a multi-objective framework is proposed, combining a modified building performance optimization (BPO) technique, artificial neural networks (ANNs), and the Non-dominated Sorting Genetic Algorithm II (NSGA-II algorithm). Key design parameters, including channel dimensions, were optimized to maximize ammonia conversion and minimize pressure drop. The TOPSIS decision-making method identified an optimal design, achieving a 26.68 % improvement in conversion and an 85.79 % reduction in pressure drop compared to the base case. Overall, the results of this paper provide a comprehensive strategy for designing a mobile hydrogen production system and microchannel reactors for hydrogen production via ammonia decomposition powering 1 kW PEMFC.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"128 ","pages":"Pages 597-612"},"PeriodicalIF":8.1,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143843472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic improvement of OER/HER electrocatalytic performance of Cu2Te via the introduction of Zr for water electrolysis","authors":"M. Abdul ,&nbsp;Xuefan Jiang ,&nbsp;Nouf H. Alotaibi ,&nbsp;Saikh Mohammad ,&nbsp;Altaf Ur Rahman ,&nbsp;B. Jing ,&nbsp;Yinsheng Luo","doi":"10.1016/j.ijhydene.2025.04.259","DOIUrl":"10.1016/j.ijhydene.2025.04.259","url":null,"abstract":"<div><div>Sustainable hydrogen generation from electrocatalytic water splitting has attracted broad interest in addressing energy crises and environmental concerns. A novel Cu_1.845Zr₂Te₆ electrocatalyst is synthesized using a facile hydrothermal approach. The morphology of Cu_1.845Zr₂Te₆ nanoparticles changed after substituting Zr⁴⁺, causing a higher density of surface defects. The Cu_1.845Zr₂Te₆ needs 231/220 mV overpotential with a lower Tafel slope of 28/93 mVdec⁻¹ for OER/HER@10 mAcm⁻², along with long-term stability over a long time. Cu_1.845Zr₂Te₆||Cu_1.845Zr₂Te₆ demonstrated a low cell voltage of 1.48 V@10 mAcm⁻² with 47 h stability for overall water-splitting. The assistance of Zr/Te with Cu ensured well-balanced kinetic behavior, as manifested by the synergetic process and redox activity of Cu_1.845Zr₂Te₆. The bimetallic telluride catalyst with tuned electronic structure between extrinsic high valance Zr⁴⁺ species doping and intrinsic positive valency Cu²⁺ species diffusion leads to increased electronic conductivity. This finding presents an inexpensive and readily available catalyst for practical water electrolysis.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"128 ","pages":""},"PeriodicalIF":8.1,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143842623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental evaluation of a hydroxyl (HHO) assists effect on combustion, emissions and engine performance for the Gasoline/CNG Bi-fuel engine","authors":"Eid S. Mohamed","doi":"10.1016/j.ijhydene.2025.04.211","DOIUrl":"10.1016/j.ijhydene.2025.04.211","url":null,"abstract":"<div><div>Hydrogen is a promising alternative energy source with many good combustion qualities that can be applied to enhance the bi-fuel engine performance emissions<strong>.</strong> This study aims to evaluate the gasoline/CNG bi-fuel engine combustion characteristics, performance, and emissions by an oxy-hydrogen (HHO) boost. HHO kit gas production at various electrolyte concentrations following the installation of the generators with two catalysts for KOH and NaOH was investigated to be optimal in terms of energy efficiency. Extensive experimental studies were carried out for engine speeds between 1500 and 5000 rpm under WOT conditions at the HHO boost rate of 0.4, 0.8 and 1.2 LPM with intake air of the engine while monitoring variables like brake-specific fuel consumption (BSFC), in-cylinder pressure (ICP), in-cylinder temperature (ICT), exhaust gas temperature (EGT), heat release rate (HRR) and emissions for both fuels. The findings suggest that HHO boost enhances a bi-fuel engine's combustion and performance compared to pure fuel at a constant engine load of 60 Nm, the peak ICP, ICT and HRR increased by 5.3 %, 13 % and 7 % respectively under a 1.2 LPM HHO additive. The experimental results demonstrated that HHO boost generally had lower BSFC approximately (6.5 %–18.8 %) for gasoline and (3.6 %–10.2 %) for CNG fuel. Additionally, the overall thermal efficiency (OTE) increases around (5.1 %–17.3 %) for gasoline and (6.1 %–16.2 %) for CNG fuel with an HHO boost. The average values of THC, CO₂, and CO concentrations are considerably reduced by 12 %, 22.5 % and 25.5 % for gasoline and 15.6 %, 19.7 % and 35.7 % for CNG fuel respectively. Nonetheless, NO_X emission was increased in the gasoline fuel but exhibits erratic behavior for CNG fuels. HHO addition is therefore a practical and efficient strategy to improve emission and performance in gasoline/CNG bi-fuel engines.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"128 ","pages":"Pages 613-631"},"PeriodicalIF":8.1,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143847550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A rapid induction-combustion approach for Mn doping to Induce electrocatalytic performance of CoFe2O4 for water splitting","authors":"Prathamesh Chougale ,&nbsp;Akshata Pattanshetti ,&nbsp;Mahesh Burud ,&nbsp;Vijay Chavan ,&nbsp;Tushar Kamble ,&nbsp;Ajay Avatare ,&nbsp;Ruhan Ustad ,&nbsp;Zulfqar Ali Sheikh ,&nbsp;Honggyun Kim ,&nbsp;Avinash Ramteke ,&nbsp;Sandip Sabale ,&nbsp;Deok-kee Kim","doi":"10.1016/j.ijhydene.2025.04.205","DOIUrl":"10.1016/j.ijhydene.2025.04.205","url":null,"abstract":"<div><div>Replacement of the current noble metal-based electrocatalysts requires designing low-cost and potential electrocatalyst with high-performance. The present work reports the novel induction-driven combustion synthesis method for Mn doped CoFe₂O₄ (MCF) nanoparticles (Nps) using sugarcane juice as a green source of fuel. The as-synthesized MCFs were employed as a bifunctional electrocatalyst for water splitting. The effect of varying concentrations of Mn in MCF on its electrochemical performance was examined and discussed. The optimal sample MCF0.5 electrocatalyst exhibited remarkable electrochemical activity towards the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), with overpotentials of 270 mV and −177 mV, respectively at 10 mA/cm². Furthermore, MCF0.5 electrocatalyst also demonstrated an impressive electrolysis cell voltage of 1.60 V at 10 mA/cm² with remarkable long-term stability. The research proposed here offers a novel (induction driven), fast (20 min), green (sugarcane juice) and scalable (yield) approach for synthesizing mixed ferrite Nps with less than 10 nm size and high surface area as an efficient alternative to noble-metal based electrocatalyst for water splitting.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"128 ","pages":"Pages 632-642"},"PeriodicalIF":8.1,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143847721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Combining hydrogen production and oxyfuel systems for energy stability and direct usage of produced oxygen. Experimental study on oxygen enriched combustion in conventional boilers","authors":"Isabel Amez ,&nbsp;Bugrahan Alabas ,&nbsp;John Chamberlain ,&nbsp;Blanca Castells ,&nbsp;Marcelo F. Ortega","doi":"10.1016/j.ijhydene.2025.04.161","DOIUrl":"10.1016/j.ijhydene.2025.04.161","url":null,"abstract":"<div><div>Renewable energy integration is changing the energy mix in many countries. At the same time, grid stability and security of supply must be ensured. A promising solution may be the development of systems to connect the natural gas network and the electricity grid. This study proposes a bi-directional system in which the natural gas grid, the electricity grid, a hydrogen production facility, and a natural gas boiler are looped together. This system consists of the H₂ injection into the gas grid by electrolysis and subsequent combustion of this mixture in an oxy-fuel boiler. Both systems are connected through oxygen from electrolysis and water from combustion usage. This research experimentally studies oxygen-enriched combustion in a 33 kW conventional burner and simulates its operation in oxy-enrichment combustion. This article therefore investigates the energy contained in the exhaust gases, the heat transfer to the heating fluid, and the pollutant emissions resulting from oxy-enrichment combustion. Results show that oxygen enrichment from electrolysis improves combustion properties, especially the combustion temperature. However, from 28.5 % O₂, the exhaust gas temperature decreased again. At the same time, the oxygen enrichment process allowed CO emissions to be almost zero at 26.1 % O₂. In the second part of the study, the scenario in which the CO₂ emissions were recirculated back to the boiler was analyzed numerically. In this case, it was observed that adding CO₂ significantly reduced the flame temperature.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"127 ","pages":"Pages 882-895"},"PeriodicalIF":8.1,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143844336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electric field-assisted synthesis of multivalent WO3-x coupling with carbon nanotubes for promoting (photo-)electrocatalytic oxygen evolution reaction","authors":"Wei Wen ,&nbsp;Jianru Gao ,&nbsp;Man Zhao,&nbsp;Qinyun Yan,&nbsp;Liwu Qiang,&nbsp;Shuai He,&nbsp;Peipei Zhao,&nbsp;Chunmei Liu,&nbsp;Jiamin Ma,&nbsp;Li Zhang,&nbsp;Junming Zhang,&nbsp;He Xiao,&nbsp;Jianfeng Jia","doi":"10.1016/j.ijhydene.2025.04.180","DOIUrl":"10.1016/j.ijhydene.2025.04.180","url":null,"abstract":"<div><div>To enhance the kinetic rate of oxygen evolution reaction (OER) in water splitting, a composite (WO_3-x/CNT) of multivalent WO_3-x coupling with carbon nanotube (CNT) is successfully synthesized by a facile electric field-assisted synthesis method. The characterization data indicate that an oxygen bridge structure of W–<em>O</em>–C is formed in WO_3-x/CNT due to strong interaction between WO_3-x and carbon nanotubes. Benefitting from this unique interfacial W–<em>O</em>–C structure, the electronic structure of tungsten sites is regulated through electron-transfer from tungsten atoms to carbon atoms. This obtained electronic structure promotes the intrinsic activity of WO_3-x/CNT and optimizes the adsorption of active OH∗ species. Moreover, the CNT support improves the overall conductivity. The optimal WO_3-x/CNT-2h sample exhibits an overpotential of only 326 mV (without iR compensation) at 10 mA cm⁻², much lower than that of commercial RuO₂ (341 mV). With the introduction of illumination, OER activity on WO_3-x/CNT-2h is tremendously enhanced and the overpotential is reduced to 276 mV at 10 mA cm⁻². This improvement is attributed to photo-generated holes, which creates additional active sites for OER. This work not only encourages the application of novel electrosynthesis methods for designing multivalent metal-based OER electrocatalysts but also highlights the synergistic effect of photoelectricity in enhancing OER performance.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"127 ","pages":"Pages 903-911"},"PeriodicalIF":8.1,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143844338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Overdoping-induced CeO2-modified PBCF heterostructures for enhanced proton-conducting SOFCs","authors":"Kechen Liu ,&nbsp;Zhongyu Hou ,&nbsp;Qi Li ,&nbsp;Xuan Zhang ,&nbsp;Jing Zhou ,&nbsp;Min Fu ,&nbsp;Zetian Tao","doi":"10.1016/j.ijhydene.2025.04.151","DOIUrl":"10.1016/j.ijhydene.2025.04.151","url":null,"abstract":"<div><div>To construct heterostructures with robustly interconnected interfaces, this study employs a co-doping strategy exceeding the stoichiometric ratio. The doping strategy in Pr_0.5Ba_0.5Co_0.7Fe_0.3Ce_xO_3-δ(PBCF) facilitates the exsolution of Ce at the B-site, leading to the formation of a CeO₂-modified surface layer on PBCF. Structural and morphological analyses confirm the dissolution of CeO₂ particles, with their concentration increasing proportionally to the Ce doping level. Notably, the single cell utilizing the Pr_0.5Ba_0.5Co_0.7Fe_0.3Ce_0.2O_3-δ (PBCFC02) cathode exhibits a substantial enhancement in fuel cell output power. The synergistic combination of superior electrochemical performance and exceptional chemical stability enabled stable operation for nearly 200 h. These findings underscore that PBCFC02, comprising a heterostructure of PBCF and 20 % CeO₂, serves as a highly efficient and durable cathode material for proton-conducting solid oxide fuel cells.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"127 ","pages":"Pages 896-902"},"PeriodicalIF":8.1,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143844339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analyzing Germany's current and future critical raw material situation for water electrolysis and offshore wind turbines","authors":"Andrea Schreiber,&nbsp;Petra Zapp,&nbsp;Christina Wulf,&nbsp;Lavinia Reitz","doi":"10.1016/j.ijhydene.2025.04.248","DOIUrl":"10.1016/j.ijhydene.2025.04.248","url":null,"abstract":"<div><div>Renewable energies require various raw materials that will drastically increase global demand in the coming years. The European Commission classifies materials with a high supply risk and a high economic importance as critical if they exceed the thresholds for both criteria. In 2023, the European Commission classified 34 materials as critical for the European Union's economy, 15 of which are also rated as strategic materials. Based on the EC's methodology using various indicators such as the Herfindahl-Hirschman Index, import dependency and the gross value added of individual economic sectors, this study is assessing the use of critical raw materials in water electrolyzes and offshore wind power for Germany. Both technologies are crucial for Germany to become climate neutral by 2045. These two technologies alone contain 12 of the 34 materials critical for the EU. To assess also future criticality, this study considers the targets of the European Commission's Critical Raw Materials Act, published in March 2023. These targets include a diversification of supplier countries, a drastic increase of domestic production of ores, concentrates and refined products as well as an increase in recycling rates.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"128 ","pages":"Pages 511-522"},"PeriodicalIF":8.1,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143843459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}