EngRN: Electrochemical Energy Engineering (EngRN) (Topic)最新文献

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Comprehensive Early Warning Strategies Based on Consistency Deviation of Thermal- Electrical Characteristics for Energy Storage Grid 基于储能电网热电特性一致性偏差的综合预警策略

EngRN: Electrochemical Energy Engineering (EngRN) (Topic) Pub Date : 1900-01-01 DOI: 10.2139/ssrn.3859656

Xiaogang Wu, Zhihao Cui, F. Hu, Jiuyu Du, M. Ouyang

{"title":"Comprehensive Early Warning Strategies Based on Consistency Deviation of Thermal- Electrical Characteristics for Energy Storage Grid","authors":"Xiaogang Wu, Zhihao Cui, F. Hu, Jiuyu Du, M. Ouyang","doi":"10.2139/ssrn.3859656","DOIUrl":"https://doi.org/10.2139/ssrn.3859656","url":null,"abstract":"The development of distributed energy storage systems is an important guarantee for renewable energy into the grid. Considering life, cost and safety factors, lithium iron phosphate (LiFePO4) batteries have always been the dominant energy storage battery in energy storage systems. However, due to the relatively flat open circuit voltage platform of the LiFePO4 batteries, the estimation of battery state of charge (SOC) and safety early warning of battery is difficult. To solve these problems, a multiple timescale comprehensive early warning strategy based on the consistency deviation of the electrical and thermal characteristics is established. The equivalent circuit model (ECM) and the unscented Kalman filter (UKF) method are used to estimate battery SOC. The established comprehensive early warning strategy is verified through fault trigger experiments of different time scale through different equivalent resistance. Experiment results show that comprehensive early warning strategy can realize early warning of different time scale failures of LiFePO4 batteries under energy storage conditions. For more dangerous serious failures that cause safety valve broken, the safety early warning can be carried out 15 minutes in advance. This research can provide a reference for ensuring the safe and reliable operation of energy storage system.","PeriodicalId":360688,"journal":{"name":"EngRN: Electrochemical Energy Engineering (EngRN) (Topic)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122275169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Nanocrystalline C-Ni Hybrid Nanoporous Monoliths for Large-Capacity and Ultrahigh-Rate Energy Storage 用于大容量超高速率储能的纳米晶C-Ni杂化纳米多孔整体材料

EngRN: Electrochemical Energy Engineering (EngRN) (Topic) Pub Date : 1900-01-01 DOI: 10.2139/ssrn.3207211

Kemeng Ji, Jiuhui Han, Bo Wang, H. Dai, Yuan Tian, A. Hirata, Lijing Kang, Pan Liu, T. Fujita, Yoshikazu Ito, Y. Oyama

{"title":"Nanocrystalline C-Ni Hybrid Nanoporous Monoliths for Large-Capacity and Ultrahigh-Rate Energy Storage","authors":"Kemeng Ji, Jiuhui Han, Bo Wang, H. Dai, Yuan Tian, A. Hirata, Lijing Kang, Pan Liu, T. Fujita, Yoshikazu Ito, Y. Oyama","doi":"10.2139/ssrn.3207211","DOIUrl":"https://doi.org/10.2139/ssrn.3207211","url":null,"abstract":"Graphene material is promising for harmonizing supercapacitor-like power density and battery-level energy density into one electrochemical energy storage (EES) system. Cost-effective, controlled, and massive production of graphene material and its successful application in practical EES are two significant challenges yet to be resolved. By developing a simple nickel nitrate-based hard-template preparation, this study demonstrates the smart design of nanocrystalline C-Ni hybrid monoliths with three-dimensionally ordered macroporous (3DOM) frameworks for high-efficiency EES. The abundant Li-storage sites and mixed high electronic and ionic conductivities grant such freestanding C-Ni composite electrode material large reversible capacity and high-rate capability through thousands of cycles even at a great thickness and using no extra current collector. This 3DOM strategy will facilitate real EES applications of graphene materials, and the yielded nanocrystalline-graphene material is promising to replace graphite anodes in current commercial LIBs with limited performances.","PeriodicalId":360688,"journal":{"name":"EngRN: Electrochemical Energy Engineering (EngRN) (Topic)","volume":"267 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123106524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

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