成果報告書詳細
管理番号20120000000049
タイトル*平成20年度中間年報 系統連系円滑化蓄電システム技術開発 要素技術開発 新エネルギー・電力事業用リチウムイオン蓄電システムの高性能・低コスト化の研究開発
公開日2012/6/29
報告書年度2008 - 2008
委託先名北陸電力株式会社 エナックス株式会社
プロジェクト番号P06004
部署名スマートコミュニティ部
和文要約和文要約等以下本編抜粋:
1. 研究開発の内容及び成果等
(1) 負極材・集電材の研究開発
a)金属酸化物の適応と負極材/集電材の基礎研究(岩手大学)
高容量で自己導電性を有するチタン酸リチウム(LTO)の合成法として、Nb(ニオブ)添加処方およびカーボン添加処方を実験した。
英文要約Title: Technology Development of Energy Storage System to Facilitate Interconnection of Renewable Energy to Power Grid/Element technology development/Research and Development about High Efficiency - Low Cost of Energy Storage System for New Energy and Electric Power Application which used Lithium-Ion Battery (FY2006-FY2010) FY2008 Annual Report
(1) Study on the advanced anode materials and combined collecting materials
a) Basic study on the Anode/Collector combination in Li-ion cell and the application of Titanium Oxide anode (Iwate University)
Synthesis of the higher capacity and self-electro conductive LTO is approached with two chemical proccess, addition of Nb (niobium) element and carbon coating method. Carbon coating is done with an addition of Oxalic and and/or Malic acid as a carbon source. After the experiments on calcinating temperature, 700 to 800 C-deg, and the calcinating atmosphere, optimum chemical formula is determined as Li4.3Ti5-xNbxO12 ,Li4.3Ti5O12/C. Higher capacity of 180mAh/g(0.1C) and 140?150mAh/g(10C) are confirmed through coin-cell evaluation in laboratory. Mass production of the LTO on this recipe is now progress and the final laminate cell preparation and integrated cell pack evaluation will done. ( following item c)).
b) Manufacture of low cost anode active material applicable in the high performance Li-ion battery (KUSAKA RARE METAL PRODUCTS CO., LTD.)
On the industrial synthesis of the self-electro conductive LTO, Li4.3Ti5O12/C, starting material is changed from original reagent recipe to industrial TiCl4. Oxalic acid solution of the starting materials is sprayed into furnace and finally pyrolysed to LTO/C product. Final mass-production procedure will be determined after the evaluation on the laminate cell using LTO/C.
c) Examination of the Anode/Collector combination for the industrial Li-ion battery (ENAX, INC.)
All aluminum collector Li-ion cell composed of spinel-LMO / LTO is experimentally prepared. Through the cell preparation experiments, prevention of the gas generation during charge/discharge of the 3-Ah level laminate-cell was the most difficult matter to resolve. Two anode material, LTO + electro conductive carbon and self-electro conductive new LTO are examined. Former material is performed more than 80% of initial capacity after 300 cycles @ 1C rate. The latter material is performed more than 80% after 2200 cycle @ 3C rate. After the several improvement works, especially on the optimum selection of electrolytes, higher capacity laminate cell is assembled and shift to the 28-packed cell evaluation.
(2) Study on anode materials
a) Developments of Lithium Manganese Oxide (LMO) cathode material through the internal combustion type spray pyrolysis process (FUKUI UNIVERSITY)
b) Manufacture of low cost cathode active material applicable in the high performance Li-ion battery (KUSAKA RARE METAL PRODUCTS CO., LTD.)
c) Examination of the LMO cathode material for the industrial Li-ion battery application (ENAX, INC.)
d) Developments of the next generation Lithium Iron Phosphate (LiFePO4, Olivine) cathode material
through the internal combustion type spray pyrolysis process (FUKUI UNIVERSITY)
(3) Preliminary study for the high-performance and long-life battery system
a) Selection and evaluation of the battery components and materials in the high performance
& long life Li-ion battery production (ENAX, INC.)
(4) Study on the battery module
a) Developments of the Li-ion Battery Management System / BMS (Y.D.K. CO., LTD.)
b) Confirmation of the Li-ion Battery Management System / BMS (ENAX, INC.)
(5) Study on charge and discharge element technology
a) Study on input and output conversion technology with high efficiency (Hokuriku Electric Power Co., Ltd. NICHICON KUSATSU Co., Ltd.)
b) Study on battery module terminal technology (Hokuriku Electric Power Co., Ltd. NICHICON KUSATSU Co., Ltd.)
(6) Study on storage battery unit
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