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MAGNESIUM SECONDARY BATTERY AND NEGATIVE ELECTRODE WITH INORGANIC MATERIAL FOR MAGNESIUM SECONDARY BATTERIES meetings

Foreign code F180009544
File No. (S2017-0423-N0)
Posted date Nov 2, 2018
Country WIPO
International application number 2018JP011172
International publication number WO 2018174087
Date of international filing Mar 20, 2018
Date of international publication Sep 27, 2018
Priority data
  • P2017-057318 (Mar 23, 2017) JP
Title MAGNESIUM SECONDARY BATTERY AND NEGATIVE ELECTRODE WITH INORGANIC MATERIAL FOR MAGNESIUM SECONDARY BATTERIES meetings
Abstract A magnesium secondary battery which is provided with: a negative electrode; and an inorganic material, at least a part of which is in contact with the surface of the negative electrode, and which is composed of at least one of aluminum oxide and silicon oxide.
Outline of related art and contending technology BACKGROUND ART
A high energy density lithium ion secondary battery (the product of the operating voltage and storage capacity) responsive to, a mobile phone, a small apparatus such as a smart phone, a hybrid car, electric car or the like as a power source such as the size of the device occupy the major status.However, the lithium-ion battery, the heating and firing conditions used by the risk, there is a fear of overcharge of the lithium precipitation by, approaching a theoretical energy density, the lithium source, the high cost of the transition metal used for electrode or the like, such as a large problem.Therefore, instead of the lithium secondary battery using magnesium in the magnesium has been proposed.
Standard electrode potential than the magnesium metal, and has a large capacity so that the ions 2.Therefore, a high energy density, and, an electrode material stable in the atmosphere.In addition, the resource is abundant magnesium from near the ground surface, the secondary battery using metal magnesium secondary battery is inexpensive and can be expected.As the magnesium secondary battery, for example, magnesium cations reversibly holding and releasing the positive electrode, the positive electrode and disposed opposite via a separator, a negative electrode active material and a negative electrode including magnesium metal or magnesium alloy, the electrolyte has been proposed that is provided (for example, see Patent Document 1).Patent Document 1 is further, the electrolyte, and magnesium cations, divalent anion 1, represented by the formula (I) (glyme compound) and a polyether compound containing solution has been described. (CH2CH2O) N-R2 R1-O(I) (in the formula, R1 and R2 each independently represents a substituent having carbon atoms which may contain 1-12 hydrocarbon group, n is an integer of 1-8) also, in non-patent document 1, glyme compound and the (symmetric glycol ether compound), the ionic liquid, and magnesium cations in the electrolyte are described.
Scope of claims (In Japanese)請求の範囲
[請求項1]
 負極と、
 前記負極の表面と少なくとも一部が接触する酸化アルミニウム及び酸化ケイ素の少なくとも一方である無機材料と、
 を備えるマグネシウム二次電池。
[請求項2]
 マグネシウムカチオンと、下記一般式(1)で表される溶媒と、を含む電解液を更に備える請求項1に記載のマグネシウム二次電池。
[化1]
(一般式(1)中、R 1及びR 2はそれぞれ独立に、炭素数1以上12以下の炭化水素基を表し、nは1以上8以下の整数を表す。)
[請求項3]
 一般式(1)中、nは2以上4以下の整数である請求項2に記載のマグネシウム二次電池。
[請求項4]
 前記電解液は、下記一般式(2)で表されるアニオンを更に含む請求項2又は請求項3に記載のマグネシウム二次電池。
[化2]
(一般式(2)中、R Nはそれぞれ独立に、ハロゲン原子、炭素数1以上8以下のハロゲン化アルキル基、又は、炭素数2以上8以下のハロゲン化アルケニル基を表す。)
[請求項5]
 前記無機材料は、活性アルミナである請求項1~請求項4のいずれか1項に記載のマグネシウム二次電池。
[請求項6]
 正極活物質としてV 2O 5、MgCo 2O 4、MgMnSiO 4、MgFeSiO 4、MnO 2、MoO 3、NiCo 2O 4、Co 3O 4、ZnCo 2O 4、グラファイト及び活性炭からなる群より選択される少なくとも一つを含む正極を更に備える請求項1~請求項5のいずれか1項に記載のマグネシウム二次電池。
[請求項7]
 前記正極と前記負極との間に位置するセパレータを更に備え、
 前記セパレータの表面の少なくとも一部に前記無機材料が配置され、当該無機材料の少なくとも一部が前記負極の表面と接触する請求項6に記載のマグネシウム二次電池。
[請求項8]
 負極と、
 前記負極の表面と少なくとも一部が接触し、酸性基及び塩基性基の少なくとも一方を有する無機材料と、
 を備えるマグネシウム二次電池。
[請求項9]
 負極と、
 前記負極の表面と少なくとも一部が接触する酸化アルミニウム及び酸化ケイ素の少なくとも一方である無機材料と、
 を備える無機材料付きマグネシウム二次電池用負極。
[請求項10]
 負極と、
 前記負極の表面と少なくとも一部が接触し、酸性基及び塩基性基の少なくとも一方を有する無機材料と、
 を備える無機材料付きマグネシウム二次電池用負極。
  • Applicant
  • ※All designated countries except for US in the data before July 2012
  • NATIONAL UNIVERSITY CORPORATION SHIZUOKA UNIVERSITY
  • Inventor
  • SAGANE, Fumihiro
  • MASUTANI, Tomoya
  • KONNO, Akinori
IPC(International Patent Classification)
Specified countries National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JO JP KE KG KH KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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