Lithium-ion Batteries - Thin Film for Energy Materials and Devices最新文献

Surface Chemical Analysis of Solid-Electrolyte Interphase Layer on Germanium Thin Films and the Effect of Vinylene Carbonate Electrolyte Additive 锗薄膜固-电解质界面层表面化学分析及碳酸乙烯电解质添加剂的影响

Lithium-ion Batteries - Thin Film for Energy Materials and Devices Pub Date : 2020-07-08 DOI: 10.5772/intechopen.90032

S. Jayasree, S. Nair, Dhamodaran Santhanagopalan

{"title":"Surface Chemical Analysis of Solid-Electrolyte Interphase Layer on Germanium Thin Films and the Effect of Vinylene Carbonate Electrolyte Additive","authors":"S. Jayasree, S. Nair, Dhamodaran Santhanagopalan","doi":"10.5772/intechopen.90032","DOIUrl":"https://doi.org/10.5772/intechopen.90032","url":null,"abstract":"Germanium thin-film anodes for Li-ion battery applications are the focus of the present work. As part of this chapter, we shall briefly review the use of germanium thin films in Li-ion batteries, and subsequently, new results pertaining to the effect of vinylene carbonate (VC) as electrolyte additive on the electrochemical performance are presented. We have used cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance spectroscopy to investigate the performance. Thin-film electrode performance with 0 wt. %, 5 wt. %, and 10 wt.% VC as electrolyte additive was compared to understand the role of additive’s concentration. The cell with 5 wt.% VC as electrolyte additive exhibited best performance with high specific capacity of 975 mAh/g, with a retention of 94 and 99% Coulombic efficiency at the end of 100 cycles. Ex situ surface chemical analysis of the solid-electrolyte interphase (SEI) layer has been studied in detail using X-ray photoelectron spectroscopy and correlated with the electrochemical performance. and non-doped. They prepared electrodes with different thickness of 50, 100, 200, and 400 nm. The n-doped Ge film of thickness 200 nm exhibited best life cycle among others. It showed a stable discharge capacity of 780 μ Ahcm 2 /cm over 180 cycles.","PeriodicalId":375639,"journal":{"name":"Lithium-ion Batteries - Thin Film for Energy Materials and Devices","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129187010","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: 2

Introductory Chapter: Lithium-Ion Batteries - Thin Film for Energy Materials and Devices 导论章:锂离子电池-能源材料和器件的薄膜

Lithium-ion Batteries - Thin Film for Energy Materials and Devices Pub Date : 2020-07-08 DOI: 10.5772/intechopen.92322

H. Nagai, Mitsunobu Sato

{"title":"Introductory Chapter: Lithium-Ion Batteries - Thin Film for Energy Materials and Devices","authors":"H. Nagai, Mitsunobu Sato","doi":"10.5772/intechopen.92322","DOIUrl":"https://doi.org/10.5772/intechopen.92322","url":null,"abstract":"In 2019, the Nobel Prize in Chemistry has been awarded to John B. Goodenough, M. Stanley Whittingham, and Akira Yoshino for their research in improving battery technology. It is the invention of lithium-ion battery (LIB). The energy density of LIB with high discharge voltage (3.6 V) is nearly twice that of Ni-Cd batteries, and excellent cycle life and higher level of intrinsic safety have been demonstrated. The LIB has revolutionized our lives and is widespread from small-scale devices such as mobile phone to emergency distributed power supply, electric vehicle, etc. Lithiumion batteries are evolving even now. Many current types of research for LIB focus on life extension, energy density, safety, cost reduction, and charging speed. Thin film LIB is one of the forms of LIB. It has attracted much interest for use as power sources of smart cards, implantable medical devices, micro-sensors, and so on. The thin film LIB is composed of the anode, cathode, and electrolyte with thicknesses on the order of microns. As the demands for safety, higher energy density, and other performance metrics increase, research into anode, cathode, and electrolyte materials has been rapidly progressing. Cathode materials are often mixed metal oxides involving lithium ion such as LiCoO2 and LiMn2O4. Anode materials are lithium metal, carbon-based materials, and inorganic compounds. Both the cathode and anode materials are film, chosen for their ability to intercalate, and de-intercalate lithium ion while maintaining their structural integrity. The current research of electrolyte, whose form is preferable to be solid in thin film batteries, trends toward ceramics such as lithium lanthanum zinc oxide (LLZO) and lithium lanthanum titanium oxide (LLTO). The optimal electrolyte should be an efficient ion-conductor and a good electrical insulator allowing the battery to operate safely. The optimal combination of these materials can yield a battery that is light, thin, long-lasting, and safe.","PeriodicalId":375639,"journal":{"name":"Lithium-ion Batteries - Thin Film for Energy Materials and Devices","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126440734","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: 0

Cathode Electronic Structure Impact on Lithium and Sodium Batteries Parameters 正极电子结构对锂钠电池参数的影响

Lithium-ion Batteries - Thin Film for Energy Materials and Devices Pub Date : 2019-05-13 DOI: 10.5772/INTECHOPEN.83606

J. Molenda

{"title":"Cathode Electronic Structure Impact on Lithium and Sodium Batteries Parameters","authors":"J. Molenda","doi":"10.5772/INTECHOPEN.83606","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.83606","url":null,"abstract":"The author of this work basing on her own investigations of A x MO 2 cathode materials (A = Li, Na; M = 3d) has demonstrated that the electronic structure of these materials plays an important role in the electrochemical intercalation process. The proposed electronic model of intercalation is universal and has outstanding significance with regard to tailoring the properties of electrode materials to the most efficient application in Li-ion and Na-ion batteries. The paper reveals correlation between electronic structure, transport, and electrochemical properties of layered Li x CoO 2 , Li x Ni 1 − y − z Co y Mn z O 2 and Na x CoO 2 cathode material and explains of appar-ently different character of the discharge/charge curve in Li x CoO 2 (monotonous curve) and NaxCoO 2 systems (step-like curve). Comprehensive experimental studies of physicochemical properties of Li x Ni 1 − y − z Co y Mn z O 2 cathode material (XRD, electrical conductivity, and thermoelectric power) are supported by electronic structure calculations performed using the Korringa-Kohn-Rostoker method with the coherent potential approximation (KKR-CPA) to account for chemical disorder. It is found that even small oxygen defects (~1%) may significantly modify DOS characteristics via formation of extra broad peaks inside the former gap leading to its substantial reduction.","PeriodicalId":375639,"journal":{"name":"Lithium-ion Batteries - Thin Film for Energy Materials and Devices","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133355349","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: 3

Flexible Porous Carbon Nanotube Films Intercalated with Active and Functional Materials for Lithium-Ion Batteries 含活性和功能材料的锂离子电池柔性多孔碳纳米管膜

Lithium-ion Batteries - Thin Film for Energy Materials and Devices Pub Date : 2019-02-19 DOI: 10.5772/INTECHOPEN.81787

Sun Xiaogang, Li Xu, Chengcheng Wei, W. Jie, Chengcheng Wei, Yapan Huang, Guodong Liang, Hao Hu

引用次数: 0