中油鈦酸鋰儲能材料研發與試量產探討

Study on lithium titanate energy storage materials from the pilot plant production in CPC

黃任賢(Jen-Hsien Huang)；黃瑞雄(Jui-Hsiung Huang)；李秋萍(Chiu-Ping Li)

二氧化鈦 ； 鋰鈦氧 ； 鈦酸鋰 ； 儲能 ； Titanium Dioxide ； Lithium Titanium Oxide ； Lithium Titanate ； Energy Storage

石油季刊

54卷4期（2018 / 12 / 01）

95 - 109

繁體中文

中油綠能所配合綠色能源研發政策，進行鈦酸鋰（Li4Ti5O12, LTO）負極材料生產計畫，建立鈦酸鋰材料製備實驗室與鋰電池電性量測實驗室，以及鋰鈦氧材料試量產工廠，從混漿／噴霧造粒產粉製程，燒結處理及過篩除水包裝，可日產100公斤，年試量產量18公噸，將成為本公司儲能材料生產重要里程碑。本計畫包括試量產材料製備程序改善、鋰鈦氧化物材料改質、放大生產試驗開發與全電池應用。試量產放大生產試驗開發部分，目前已完成年產能約18噸，材料全產線建置，本年度除完成整線製程最適化之外，改善減少二氧化鈦等原物料殘留，將可助於後續電池性能提升及改善電池製程加工性，並送多家電池廠進行後續試驗，進行鋰鈦氧全電池製作最適化。鋰鈦氧儲能模組載具應用部分，完成風光式（風能／太陽能）LED路燈實地應用，電動48V堆高機實機應用，電容量為200Ah，與原鉛酸電池組相較，不但充電時間縮短，充電時亦無瀰漫酸氣情況，整體性能優於鉛酸電池組。

In order to coordinate the policy for development of green energy, Green Technology Research Institute (GTRI),CPC corporation, built the pilot plant to produce lithium titanium oxide (LTO, Li_4Ti_5O_(12)) and related material research/characterization labs. The daily and year production capacities of the pilot plant can achieve 100 kg/day and 18 t/year, respectively, including the preparation of precursor slurry, spray-drying process, thermal annealing treatment, mechanical screening and water removal/package process. In this study, the Pilot plant production line in CPC was optimized and improved the reactivity to minimize the amount of unreacted TiO_2, leading to better performance. Moreover, the as-prepared LTO powders were also evaluated the electrochemical performance and the full lithium ion battery (LIB). The fabricated LIBs have been successfully integrated into the wind/solar powered LED Street light and applied for electric stackers. Compared with the traditional Lead-acid battery, the LTO based LIBs exhibit faster charge time and superior energy storage performance.

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