公开(公告)号：US08765278B2

公开(公告)日：2014-07-01

申请号：US13910065

申请日：2013-06-04

Applicant: Battelle Memorial Institute

Inventor： Ji-Guang Zhang ,  Jie Xiao ,  Wu Xu ,  Deyu Wang ,  Ralph E. Williford ,  Jun Liu

IPC: H01M2/02 ,  H01M12/06 ,  H01M12/00 ,  H01M12/04 ,  H01M12/08

CPC classification number: H01M12/00 ,  H01M2/14 ,  H01M4/62 ,  H01M4/8647 ,  H01M4/8652 ,  H01M4/8663 ,  H01M6/16 ,  H01M12/04 ,  H01M12/06 ,  H01M12/08 ,  H01M2300/0017

Abstract: Disclosed herein are embodiments of lithium/air batteries and methods of making and using the same. Certain embodiments are pouch-cell batteries encased within an oxygen-permeable membrane packaging material that is less than 2% of the total battery weight. Some embodiments include a hybrid air electrode comprising carbon and an ion insertion material, wherein the mass ratio of ion insertion material to carbon is 0.2 to 0.8. The air electrode may include hydrophobic, porous fibers. In particular embodiments, the air electrode is soaked with an electrolyte comprising one or more solvents including dimethyl ether, and the dimethyl ether subsequently is evacuated from the soaked electrode. In other embodiments, the electrolyte comprises 10-20% crown ether by weight.

Abstract translation: 本文公开了锂/空气电池的实施例及其制造和使用方法。 某些实施例是封装在透氧膜包装材料内的袋电池电池，其小于总电池重量的2％。 一些实施方案包括包含碳和离子插入材料的混合空气电极，其中离子插入材料与碳的质量比为0.2至0.8。 空气电极可以包括疏水的多孔纤维。 在具体实施方案中，空气电极用包含一种或多种包括二甲醚的溶剂的电解质浸泡，然后从浸泡的电极中抽出二甲醚。 在其它实施方案中，电解质包含10-20重量％的冠醚。

公开(公告)号：US20140295298A1

公开(公告)日：2014-10-02

申请号：US14270561

申请日：2014-05-06

Applicant: BATTELLE MEMORIAL INSTITUTE

Inventor： Jiguang Zhang ,  Jie Xiao ,  Jun Liu ,  Wu Xu ,  Xiaolin Li ,  Deyu Wang

IPC: H01M4/583 ,  H01M10/052 ,  H01M12/00

CPC classification number: H01M4/583 ,  H01M4/133 ,  H01M4/382 ,  H01M4/5835 ,  H01M4/587 ,  H01M4/96 ,  H01M6/16 ,  H01M10/052 ,  H01M12/00 ,  H01M12/08 ,  H01M2004/021 ,  Y02E60/128

Abstract: Some batteries can exhibit greatly improved performance by utilizing electrodes having randomly arranged graphene nanosheets forming a network of channels defining continuous flow paths through the electrode. The network of channels can provide a diffusion pathway for the liquid electrolyte and/or for reactant gases. Metal-air batteries can benefit from such electrodes. In particular Li-air batteries show extremely high capacities, wherein the network of channels allow oxygen to diffuse through the electrode and mesopores in the electrode can store discharge products.

Abstract translation: 一些电池可以通过利用具有随机排列的石墨烯纳米片的电极而显示出极大的改进的性能，该电极形成限定通过电极的连续流动路径的通道网络。 通道网络可以为液体电解质和/或反应气体提供扩散途径。 金属空气电池可以从这样的电极中受益。 特别地，Li空气电池显示出极高的容量，其中通道网络允许氧气扩散通过电极，并且电极中的介孔可以存储放电产物。