JPH0729596A - Lithium secondary battery - Google Patents
Lithium secondary batteryInfo
- Publication number
- JPH0729596A JPH0729596A JP5196812A JP19681293A JPH0729596A JP H0729596 A JPH0729596 A JP H0729596A JP 5196812 A JP5196812 A JP 5196812A JP 19681293 A JP19681293 A JP 19681293A JP H0729596 A JPH0729596 A JP H0729596A
- Authority
- JP
- Japan
- Prior art keywords
- lithium
- negative electrode
- metal
- discharging
- charging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
(57)【要約】
【目的】 充放電時に負極から剥離し充放電に使用され
ないリチウムの生成を防止し、充放電寿命の向上および
充放電を繰り返すことによって生じる安全性低下の防止
したリチウム二次電池を提供することを目的としてい
る。
【構成】 リチウムを活物質とする負極２と、リチウム
イオンを挿入および脱離可能な正極６および非水溶媒に
イオン解離性のリチウム塩を溶解した電解液３を有する
リチウム二次電池において、当該負極２が導電性金属網
を埋め込んだリチウム金属であることを特徴とするもの
である。
【効果】 負極に導電性エキスパンドメタルあるいはラ
ス箔などの金網を埋め込んだリチウム金属を用いること
により、負極の劣化の生じない、すなわち充放電効率の
高いリチウム電池を実現できる。
(57) [Abstract] [Purpose] Lithium secondary that prevents the generation of lithium that is separated from the negative electrode during charging / discharging and is not used for charging / discharging, and improves the charging / discharging life and prevents the safety from decreasing due to repeated charging / discharging Intended to provide batteries. A lithium secondary battery comprising a negative electrode 2 having lithium as an active material, a positive electrode 6 capable of inserting and desorbing lithium ions, and an electrolytic solution 3 in which an ion dissociable lithium salt is dissolved in a non-aqueous solvent, It is characterized in that the negative electrode 2 is a lithium metal in which a conductive metal network is embedded. [Effects] By using a lithium metal in which a metal mesh such as a conductive expanded metal or a lath foil is embedded in the negative electrode, it is possible to realize a lithium battery in which deterioration of the negative electrode does not occur, that is, high charge / discharge efficiency is achieved.
Description
【０００１】[0001]
【発明の属する技術分野】本発明はリチウム二次電池、
さらに詳細にはリチウムを負極活物質とし、リチウムイ
オンを挿入、脱離可能な正極とし、非水電解液を用いる
リチウム二次電池の負極に関するものである。TECHNICAL FIELD The present invention relates to a lithium secondary battery,
More specifically, the present invention relates to a negative electrode of a lithium secondary battery using a non-aqueous electrolyte as a positive electrode capable of inserting and releasing lithium ions as a negative electrode active material.
【０００２】[0002]
【従来の技術】電子機器の小型軽量化、携帯化が進み、
その電源として高エネルギー密度電池の開発が要求され
ている。このような要求に答える電池として、負極にリ
チウムを活物質とした充放電可能な高性能二次電池の開
発が期待されている。リチウムを活物質とした負極とし
ては、例えば、リチウム金属、リチウム金属合金、ある
いは、リチウムイオンを挿入、放出可能な化学物質（例
えば、種々の炭素材料、Ｎｂ2Ｏ5、ＷＯ3等）を用いる
ことが試みられているが、原理的に最も高エネルギー密
度を可能にする負極は、リチウム金属を負極に用いた電
池である。2. Description of the Related Art As electronic devices are becoming smaller and lighter and portable,
Development of a high energy density battery is required as the power source. As a battery that meets such demands, it is expected to develop a high performance rechargeable battery that uses lithium as an active material for the negative electrode and can be charged and discharged. As the negative electrode using lithium as an active material, for example, lithium metal, a lithium metal alloy, or a chemical substance capable of inserting and releasing lithium ions (for example, various carbon materials, Nb 2 O 5 , WO 3 etc.) is used. However, the negative electrode that enables the highest energy density in principle is a battery using lithium metal as the negative electrode.
【０００３】本明細書においては、負極にリチウム金属
を用い、リチウムイオンを挿入および脱離可能な正極お
よび非水溶媒にイオン解離性のリチウム塩を溶解した電
解液を有し、充放電可能な電池をリチウム二次電池と称
する。In the present specification, lithium metal is used for the negative electrode, a positive electrode capable of inserting and releasing lithium ions and an electrolytic solution in which an ion dissociable lithium salt is dissolved in a non-aqueous solvent are used, and charging and discharging are possible. The battery is called a lithium secondary battery.
【０００４】[0004]
【発明が解決する問題点】リチウム二次電池は、基本的
に市販されている各種の二次電池、例えば、ニッケルカ
ドミウム電池、鉛蓄電池などに比べて高性能であるが、
充放電回数が増えると放電特性の劣化、安全性の劣化な
どが確認されている。リチウム二次電池では充放電を繰
り返すと、負極から剥離し充放電に使用されないリチウ
ムが負極上に堆積することが原因と考えられている。こ
の剥離は、特に急速充電を行なった場合に顕著になる。Problems to be Solved by the Invention Lithium secondary batteries are basically higher in performance than various secondary batteries commercially available, for example, nickel-cadmium batteries and lead-acid batteries.
It has been confirmed that when the number of times of charging and discharging increases, deterioration of discharge characteristics, deterioration of safety, and the like. It is considered that in a lithium secondary battery, when charging and discharging are repeated, the lithium is separated from the negative electrode and lithium that is not used for charging and discharging is deposited on the negative electrode. This peeling becomes remarkable especially when rapid charging is performed.
【０００５】この負極の劣化を防ぐための対策として、
特開昭５９−１３２５６７号公報、特開昭６１−２４５
４７５号公報、特開昭６２−１４０３５５８号公報など
に記載されているように、リチウム金属を合金化した
り、導電性高分子を複合化したりする試みがなされてい
るが、まだ不十分である。しかも、リチウムアルミニウ
ム合金の場合、充放電を繰り返すことで合金の膨張収縮
により電極が破壊されるという問題があり、さらに充放
電時にはリチウムの合金中での拡散速度が遅いため電池
の取得電流は低いという問題があった。また導電性高分
子の複合化の場合は、負極の体積効率が劣化するなどの
問題点があった。As a measure for preventing the deterioration of the negative electrode,
JP-A-59-132567, JP-A-61-245
As described in Japanese Patent Laid-Open No. 475, 1985, Japanese Patent Application Laid-Open No. 62-1403558, attempts have been made to alloy lithium metal or compound a conductive polymer, but this is still insufficient. Moreover, in the case of a lithium aluminum alloy, there is a problem that the electrode is destroyed due to expansion and contraction of the alloy by repeating charging and discharging, and furthermore, during charging and discharging, the diffusion speed of lithium in the alloy is slow, so the current obtained by the battery is low. There was a problem. Further, in the case of compounding conductive polymers, there is a problem that the volumetric efficiency of the negative electrode is deteriorated.
【０００６】[0006]
【発明の目的】本発明は、このような現状に鑑みなされ
たものであり、その目的は、充放電時に負極から剥離し
充放電に使用されないリチウムの生成を防止し、充放電
寿命の向上および充放電を繰り返すことによって生じる
安全性低下の防止を目的としている。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to prevent generation of lithium that is separated from the negative electrode during charging / discharging and is not used for charging / discharging, and to improve charging / discharging life. The purpose is to prevent a decrease in safety caused by repeated charging and discharging.
【０００７】[0007]
【問題点を解決するための手段】上述の問題点を解決す
るため、本発明によるリチウム二次電池は、リチウムを
活物質とする負極と、リチウムイオンを挿入および脱離
可能な正極および非水溶媒にイオン解離性のリチウム塩
を溶解した電解液を有するリチウム二次電池において、
当該負極が導電性金属網を埋め込んだリチウム金属であ
ることを特徴とするものである。In order to solve the above problems, a lithium secondary battery according to the present invention comprises a negative electrode using lithium as an active material, a positive electrode capable of inserting and releasing lithium ions, and a non-aqueous electrolyte. In a lithium secondary battery having an electrolytic solution in which a ionic dissociative lithium salt is dissolved in a solvent,
The negative electrode is a lithium metal in which a conductive metal network is embedded.
【０００８】すなわち負極活物質にリチウムを用いるリ
チウム二次電池において、当該負極が導電性金属エキス
パンドメタルやラス箔などの金網を埋め込んだリチウム
金属であることを特徴とする。That is, the lithium secondary battery using lithium as the negative electrode active material is characterized in that the negative electrode is a lithium metal in which a metal net such as a conductive metal expanded metal or lath foil is embedded.
【０００９】本発明をさらに詳しく説明する。The present invention will be described in more detail.
【００１０】本発明によるリチウム二次電池は、負極に
導電性金属エキスパンドメタルやラス箔などの金網を埋
め込むことを特徴とし、この網目構造を採用することに
より、充放電寿命が長く、安全なリチウム二次電池を実
現できる。すなわち、負極から剥離し充放電に使用され
ないリチウムが形成した場合でも、導電性金属金網、あ
るいは埋め込んだ導電性金属繊維と接触することで、再
びリチウムを充放電に使用できるようになる。この結果
リチウム二次電池の寿命の向上が実現できる。The lithium secondary battery according to the present invention is characterized in that a metal mesh such as a conductive metal expanded metal or lath foil is embedded in the negative electrode. By adopting this mesh structure, the lithium secondary battery has a long charge / discharge life and is safe. A secondary battery can be realized. That is, even when lithium is separated from the negative electrode and is not used for charging / discharging, lithium can be used again for charging / discharging by coming into contact with the conductive metal wire net or the embedded conductive metal fiber. As a result, the life of the lithium secondary battery can be improved.
【００１１】導電性を有する導電性金属エキスパンドメ
タルやラス箔などの金網としては、ニッケル、マンガ
ン、チタン、銅、アルミニウム、金、亜鉛、白金、ス
ズ、銀、ビスマス、カドミウム、テルル、ステンレス鋼
が使用できる。好ましくは、リチウム金属との合金反応
を起こしにくい、たとえば、ニッケル、銅などが好適で
ある。本発明に用いられる、当該導電性金属網の空孔率
は３０％〜６０％が好適であり、金網を構成する一本の
導電性金属の巾である刻み巾Ｗは０．０３〜０．５ｍｍ
であることが好ましい。金網の空孔率が３０％以下の場
合、放電時に網目内部のリチウム金属の析出を妨げる可
能性があり、過電圧が高くなる恐れがある。一方、空孔
率が６０％以上の場合、メッシュを構成する導電性金属
が剥離したリチウムを電気的に接触させる頻度が小さ
く、本発明の効果を期待できない。Wire meshes such as conductive metal expanded metal and lath foil having conductivity are nickel, manganese, titanium, copper, aluminum, gold, zinc, platinum, tin, silver, bismuth, cadmium, tellurium and stainless steel. Can be used. Preferably, nickel, copper, etc., which are less likely to cause an alloy reaction with lithium metal, are suitable. The porosity of the conductive metal mesh used in the present invention is preferably 30% to 60%, and the width W of one conductive metal forming the wire mesh is 0.03 to 0. 5 mm
Is preferred. If the porosity of the wire mesh is 30% or less, the deposition of lithium metal inside the mesh may be hindered during discharge, and the overvoltage may increase. On the other hand, when the porosity is 60% or more, the frequency with which the conductive metal forming the mesh is in contact with the separated lithium is small, and the effect of the present invention cannot be expected.
【００１２】また、刻み巾Ｗが０．０３ｍｍ以下の場
合、剥離したリチウムを電気的に接触させる接触面積が
小さくなり本発明の効果を期待できない。該負極は、上
記導電性金属網をリチウム金属で挟みロールあるいはプ
レス機などにて圧延を１０回以上繰り返す、あるいは溶
融したリチウム金属中に上記金属網を添加後、押し出し
成型することで薄膜化することが好ましい。When the step width W is 0.03 mm or less, the contact area for electrically contacting the separated lithium is small, and the effect of the present invention cannot be expected. The negative electrode is formed into a thin film by sandwiching the conductive metal mesh with lithium metal and repeating rolling 10 times or more with a roll or a press, or by adding the metal mesh to molten lithium metal and then extrusion molding. It is preferable.
【００１３】本発明のリチウム二次電池の正極として
は、例えば、ＬｉxＣｏＯ2（０≦ｘ≦１）、ＬｉxＮｉ
Ｏ2（０≦ｘ≦１）、ＬｉxＭｎ2Ｏ4（０≦ｘ≦１）、結
晶あるいは非結晶のＶ2Ｏ5、ＬｉxＶ3Ｏ8（０＜ｘ≦
１）、ＴｉＳ2、ＮｂＳｅ3等を用いることができる。ま
た、電解液に用いるリチウム塩としては、例えば、Ｌｉ
ＡｓＦ6、ＬｉＰＦ6、ＬｉＳｂＦ6、ＬｉＣＦ3ＳＯ3、
ＬｉＮ（ＣＦ3ＳＯ2）2、ＬｉＣ（ＣＦ3ＳＯ2）3、Ｌｉ
ＣｌＯ4、ＬｉＢＦ4、ＬｉＡｌＣｌ4等を用いることが
できる。Examples of the positive electrode of the lithium secondary battery of the present invention include Li x CoO 2 (0 ≦ x ≦ 1) and Li x Ni.
O 2 (0 ≦ x ≦ 1), Li x Mn 2 O 4 (0 ≦ x ≦ 1), crystalline or amorphous V 2 O 5 , Li x V 3 O 8 (0 <x ≦
1), TiS 2 , NbSe 3 or the like can be used. The lithium salt used in the electrolytic solution may be, for example, Li
AsF 6 , LiPF 6 , LiSbF 6 , LiCF 3 SO 3 ,
LiN (CF 3 SO 2) 2 , LiC (CF 3 SO 2) 3, Li
ClO 4 , LiBF 4 , LiAlCl 4 or the like can be used.
【００１４】電解液に用いる非水溶媒としては、プロピ
レンカーボネート、エチレンカーボネート、Г−ブチル
ラクトン等の環状エステル、ジメチルカーボネート、ジ
エチルカーボネート等の非環状エステル、テトラヒドロ
フラン、２−メチルテトラヒドロフラン、１，３−ジオ
キソラン、４−メチル−１，３−ジオキソラン等の環状
エーテル、ジアルコキシエタン、グライム類等の非環状
エーテル、スルホラン等の硫黄化合物等を単独もしくは
２種類以上混合して用いることができる。As the non-aqueous solvent used in the electrolytic solution, cyclic esters such as propylene carbonate, ethylene carbonate and .GAMMA.-butyl lactone, acyclic esters such as dimethyl carbonate and diethyl carbonate, tetrahydrofuran, 2-methyltetrahydrofuran, 1,3- Cyclic ethers such as dioxolane and 4-methyl-1,3-dioxolane, acyclic ethers such as dialkoxyethane and glymes, and sulfur compounds such as sulfolane can be used alone or in admixture of two or more.
【００１５】[0015]
【比較例１】コイン電池の構造を図１に示す。図中、１
は負極ケース、２は負極、３は電解液、４はセパレー
タ、５は正極ケース、６は正極、７はガスケットであ
る。Comparative Example 1 The structure of a coin battery is shown in FIG. 1 in the figure
Is a negative electrode case, 2 is a negative electrode, 3 is an electrolytic solution, 4 is a separator, 5 is a positive electrode case, 6 is a positive electrode, and 7 is a gasket.
【００１６】負極として、厚さ１５０μｍのリチウム金
属薄膜、電解液として１モル／ｌのＬｉＡｓＦ6をエチ
レンカーボネートとプロピレンカーボネートの混合溶媒
（体積混合比、１：１）に溶解したものを用いて、コイ
ン電池（直径２３ｍｍ、厚さ２ｍｍ）を作製した。この
電池を、０．４ｍＡ（０．１７６ｍＡ／ｃｍ2）の放電
電流で１８時間放電し、０．８ｍＡ（０．３５２ｍＡ／
ｃｍ2）で９時間放電する操作を１サイクルとして、充
放電のサイクルを１０回繰り返したのちに、６ｍＡ
（２．６５ｍＡ／ｃｍ2）にて−２．０Ｖまで放電し
た。その際の充放電効率を表２に示す。A 150 μm thick lithium metal thin film was used as the negative electrode, and 1 mol / l of LiAsF 6 was dissolved as an electrolytic solution in a mixed solvent of ethylene carbonate and propylene carbonate (volume mixing ratio: 1: 1). A coin battery (diameter 23 mm, thickness 2 mm) was produced. This battery was discharged for 18 hours at a discharge current of 0.4 mA (0.176 mA / cm 2 ) to obtain 0.8 mA (0.352 mA / cm 2 ).
cm 2 ), the operation of discharging for 9 hours was set as one cycle, and the charging / discharging cycle was repeated 10 times.
It was discharged to −2.0 V at (2.65 mA / cm 2 ). The charging / discharging efficiency in that case is shown in Table 2.
【００１７】[0017]
【実施例１】負極として、リチウム金属中に表１、図２
に示した銅製の金属網（Ｎｏ．１）を埋め込んだ厚さ１
５０μｍの箔を用いた以外は、比較例１と同様に、図１
に構造を示す示す電池作製し、同じ方法で充放電効率を
求めた。その際の充放電効率を表２に示す。比較例１に
比べ、実施例１は、飛躍的に充放電効率が向上している
ことが明らかである。Example 1 As a negative electrode, a lithium metal in Table 1 and FIG.
Thickness 1 with the copper metal mesh (No. 1) shown in Fig.
As in Comparative Example 1, except that a foil of 50 μm was used, as shown in FIG.
A battery having the structure shown in Fig. 3 was produced and the charge / discharge efficiency was determined by the same method. The charging / discharging efficiency in that case is shown in Table 2. It is apparent that the charging / discharging efficiency of Example 1 is dramatically improved as compared with Comparative Example 1.
【００１８】なお、表１および図２中、ＬＷは網目の長
手方向長さ、ＳＷは網目の短手方向長さ、Ｔは厚板の厚
みを示し、Ｗは前述のような刻み巾である。In Table 1 and FIG. 2, LW is the length of the mesh in the longitudinal direction, SW is the length of the mesh in the lateral direction, T is the thickness of the thick plate, and W is the step size as described above. .
【００１９】[0019]
【実施例２】負極として、リチウム金属中に表１、図２
に示した銅製の金属網（Ｎｏ．２）を埋め込んだ厚さ１
５０μｍの薄膜箔を用いた以外は、実施例１と同様に、
図１に示すコイン電池作製し、同じ方法で充放電効率を
求めた。その際の充放電効率を表２に示す。比較例１に
比べ、実施例２は、飛躍的に充放電効率が向上している
ことが明らかである。Example 2 As a negative electrode, a lithium metal in Table 1 and FIG.
Thickness 1 with the copper metal mesh (No. 2) shown in Fig.
As in Example 1, except that a thin film foil of 50 μm was used,
The coin battery shown in FIG. 1 was produced, and the charge / discharge efficiency was determined by the same method. The charging / discharging efficiency in that case is shown in Table 2. It is apparent that the charging / discharging efficiency of Example 2 is dramatically improved as compared with Comparative Example 1.
【００２０】[0020]
【表１】 [Table 1]
【００２１】[0021]
【表２】 [Table 2]
【００２２】[0022]
【発明の効果】以上の説明から明らかなように、本発明
によれば、負極に導電性エキスパンドメタルあるいはラ
ス箔などの金網を埋め込んだリチウム金属を用いること
により、負極の劣化の生じない、すなわち充放電効率の
高いリチウム電池を実現できる。As is apparent from the above description, according to the present invention, by using a lithium metal having a metal mesh such as a conductive expanded metal or lath foil embedded in the negative electrode, deterioration of the negative electrode does not occur. A lithium battery with high charge / discharge efficiency can be realized.
【図１】コイン電池の構造を示した図。FIG. 1 is a diagram showing a structure of a coin battery.
【図２】銅金属網の構造を示したものである。FIG. 2 shows the structure of a copper metal mesh.
１ 負極ケース ２ 負極 ３ 電解液 ４ セパレータ ５ 電池ケース ６ 正極 ７ ガスケット 1 Negative electrode case 2 Negative electrode 3 Electrolyte 4 Separator 5 Battery case 6 Positive electrode 7 Gasket
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山木 準一 東京都千代田区内幸町１丁目１番６号 日 本電信電話株式会社内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Junichi Yamaki 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation
Claims (1)
イオンを挿入および脱離可能な正極および非水溶媒にイ
オン解離性のリチウム塩を溶解した電解液を有するリチ
ウム二次電池において、当該負極が導電性金属網を埋め
込んだリチウム金属であることを特徴とするリチウム二
次電池。1. A lithium secondary battery comprising a negative electrode using lithium as an active material, a positive electrode into which lithium ions can be inserted and desorbed, and an electrolytic solution in which an ion-dissociative lithium salt is dissolved in a non-aqueous solvent. Is a lithium metal in which a conductive metal network is embedded, and a lithium secondary battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5196812A JPH0729596A (en) | 1993-07-14 | 1993-07-14 | Lithium secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5196812A JPH0729596A (en) | 1993-07-14 | 1993-07-14 | Lithium secondary battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0729596A true JPH0729596A (en) | 1995-01-31 |
Family
ID=16364071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5196812A Pending JPH0729596A (en) | 1993-07-14 | 1993-07-14 | Lithium secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0729596A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6950211B2 (en) | 2001-07-05 | 2005-09-27 | Corel Corporation | Fine moire correction in images |
| JP2016527680A (en) * | 2013-09-11 | 2016-09-08 | エルジー・ケム・リミテッド | Lithium electrode and lithium secondary battery including the same |
| EP3276709A1 (en) * | 2016-07-25 | 2018-01-31 | LG Chem, Ltd. | Negative electrode comprising mesh-type current collector, lithium secondary battery comprising the same, and manufacturing method thereof |
-
1993
- 1993-07-14 JP JP5196812A patent/JPH0729596A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6950211B2 (en) | 2001-07-05 | 2005-09-27 | Corel Corporation | Fine moire correction in images |
| JP2016527680A (en) * | 2013-09-11 | 2016-09-08 | エルジー・ケム・リミテッド | Lithium electrode and lithium secondary battery including the same |
| US9673443B2 (en) | 2013-09-11 | 2017-06-06 | Lg Chem, Ltd. | Lithium electrode and lithium secondary battery comprising the same |
| JP2018026365A (en) * | 2013-09-11 | 2018-02-15 | エルジー・ケム・リミテッド | Lithium electrode and lithium secondary battery including the same |
| EP2942827B1 (en) * | 2013-09-11 | 2020-05-13 | LG Chem, Ltd. | Lithium electrode and lithium secondary battery comprising same |
| EP3276709A1 (en) * | 2016-07-25 | 2018-01-31 | LG Chem, Ltd. | Negative electrode comprising mesh-type current collector, lithium secondary battery comprising the same, and manufacturing method thereof |
| JP2018018821A (en) * | 2016-07-25 | 2018-02-01 | エルジー・ケム・リミテッド | Negative electrode comprising mesh-type current collector, lithium secondary battery comprising the same, and manufacturing method thereof |
| CN107658472A (en) * | 2016-07-25 | 2018-02-02 | 株式会社Lg 化学 | Negative pole comprising mesh-type current-collector, include its lithium secondary battery and its manufacture method |
| US10686193B2 (en) | 2016-07-25 | 2020-06-16 | Lg Chem, Ltd. | Negative electrode comprising mesh-type current collector, lithium secondary battery comprising the same, and manufacturing method thereof |
| CN107658472B (en) * | 2016-07-25 | 2020-12-15 | 株式会社Lg 化学 | Negative electrode including mesh-type current collector, lithium secondary battery including the same, and method for producing the same |
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