A STUDY OF THE FACTORS THAT AFFECT LITHIUM ION BATTERY DEGRADATION by SHIHUI XIONG -Dr. Robert O’Connell, Thesis Supervisor MAY 2019 University of Missouri-Columbia

 A STUDY OF THE FACTORS THAT AFFECT LITHIUM ION BATTERY DEGRADATION by Shihui Xiong --Dr. Robert O’Connell, Thesis Supervisor

 ABSTRACT Secondary batteries have been applied in every aspect of our life, from cell phones, to laptops, medical devices, satellites, and renewable energy power stations. Li-ion batteries have shown superior advantages in their ability to store large amount of energy in compact spaces and their long battery life. However, battery capacity degradation, which causes battery failure, posts a serious concern to the economy and efficiency to individuals and industries. The degradation rate is affected by several factors including temperature, charge and discharge voltage, current, and the level at which the battery is charged or discharged. Understanding these factors can largely help to reduce the speed of battery failure and allow batteries to better serve their purpose. First, this thesis project did a review of existing literatures addressing how conditions including temperature, state of charge, depth of discharge, charge voltage, and C-rate affect Li-ion battery degradation rate and the conditions necessary to achieve optimal battery life. An experiment was done to study how battery chemistry, cycle frequency, and temperature affect battery degradation rate and observe how degradation affects battery performance. Results show that high and low temperature shorten battery life, cycle frequency is not consequential with Li-ion battery degradation rate, and INR batteries might have shorter battery life than IMR batteries. These findings will help consumers and companies better understand proper usage of Li ion batteries.

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Tatur T.A. Fundamentals of the theory of electrical circuits-Татур Т.А. Основы теории электрических цепей

 Tutorial. M.:  1980. - 271 p. The book consists of two parts: linear electrical circuits and non-linear electrical circuits. Methods of analysis and synthesis, as a rule, are accompanied by calculation algorithms and illustrative examples. For clarity, the material is presented mainly in the form of tables. Designed for students of electrical engineering specialties of universities.

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В.А. Матвиенко ОСНОВЫ ТЕОРИИ ЦЕПЕЙ Учебное пособие-V.A. Matvienko FUNDAMENTOS DA TEORIA DOS CIRCUITOS Tutorial

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A Study on the Economic Impacts of Fuel Cell Bus Development and the Importance of Fuel Cell Bus Supply Expansion Policy -By-Hyun Seok Park Graduate School of Management of Technology Pukyong National University

 

A Study on the Economic Impacts of Fuel Cell Bus Development and the Importance of Fuel Cell Bus Supply Expansion Policy Hyun Seok Park Graduate School of Management of Technology Pukyong National University 

Abstract

 The transition from "Carbon Economy" to "Hydrogen Economy" heralds an innovative change worldwide. The hydrogen economy refers to an economic industrial structure that uses hydrogen as a major energy source. Korea has also announced a roadmap to vitalize the hydrogen economy to take the lead in these changes. Korea plans to build an industrial ecosystem that can lead the global hydrogen economy with its strengths of "Fuel Cell Electric Vehicles" and "Fuel Cells" as the two pillars. Examining the degree of social acceptance of this new innovation, the goal of supplying fuel cell electric vehicles, it is estimated that it is in the process of moving beyond early adopters to early majorities. In order for the hydrogen economy to vitalize, it must pass ‘The Chasm’, a discontinuous surface of social acceptance, and a plan is needed for it. This paper attempted to derive policy implications necessary for vitalizing the hydrogen economy. What is particularly noteworthy is that the development of fuel cell buses and the supply of fuel cell buses contribute greatly to the vitalization of the hydrogen economy. Therefore, the purpose of this study is to present the economic impact of fuel cell bus development and to show the priority among the policies supplying fuel cell bus. As a research method, an input-output analysis was performed to present the economic impact, and a analytic hierarchy process was performed to show the priority among the policies supplying fuel cell bus. This study by input-output analysis redefines the fuel cell bus industry based on the 2018 input-output table and calculates the production, value-added, and employment induction effects caused by exogenous specification and analyzes the forward and backward linkage effects. According to the analysis results, the production induction effect caused by the fuel cell bus is 0.704, the value-added induction effect is 0.267, and the employment induction effect is estimated as 2.944 people/billion won. Moreover, out of the total 34 industries, the forward linkage effect is ranked 17th and the backward linkage effect is ranked 13th, which is analyzed as an industry with a strong intermediate property in both the forward and backward. This study by analytic hierarchy process expressed the support policy for the distribution of fuel cell buses as an AHP hierarchical diagram. And, the survey was conducted on busan metrobus company. For analysis, 'Expert Choice 2000', a specialized program, was used. As a result of the analysis, 45.8% of "supporting the supply of hydrogen charging stations", 34.0% of "supporting the supply of fuel cell buses", 12.5% of "technology advancement", and 7.7% of "institutional support". It can be seen that busan metrobus company evaluated "supporting the supply of hydrogen charging stations" as the most important. The results of this paper are expected to serve as policy guidelines for the expansion of the fuel cell bus industry, and the expansion of fuel cell bus supply is expected to serve as an important trigger for revitalizing the hydrogen economy.

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Fundamentals of the theory of circuits Authors: G.V. Zeveke, P.A. Ionkin, A.V. Netushil, S.V. Strakhov.-Основы теории цепей. Авторы: Г.В. Зевеке, П.А. Ионкин, А.В. Нетушил, С.В. Страхов.

 Fundamentals of the theory of circuits Authors: G.V. Zeveke, P.A. Ionkin, A.V. Netushil, S.V. Strakhov. 5th edition, revised. (Moscow: Energoatomizdat, 1989)

Fundamentals of the theory of circuits Authors: G.V. Zeveke, P.A. Ionkin, A.V. Netushil, S.V. Strakhov

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