High-Capacity Li-Ion Rechargeable Battery

高容量锂离子充电电池

• 批准号: 8832003
• 负责人: PAUL SHNITSER
• 金额: $ 15万
• 依托单位: PHYSICAL OPTICS CORPORATION
• 依托单位国家: 美国
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-09-16 至 2015-03-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8832003
• 关键词: Adult; Air; American; Anodes; Area; Cellular Phone; Charge; Cochlear Implants; Computers; Cosmetics; Development; Devices; Dimensions; Electronics; Evaluation; Goals; Government; Hearing Aids; Investigation; Ions; Life; Lithium; Marketing; Measures; Medical Device; Medical Technology; Nanotubes; National Institute on Deafness and Other Communication Disorders; Natural graphite; Optics; Persons; Phase; Price; Reaction; Relative (related person); Reporting; Research; Semiconductors; Services; Shapes; Silicon; Structure; Surface; Technology; Thick; Time; United States National Institutes of Health; Work; base; cost; design; experience; flexibility; hearing impairment; improved; innovation; nano; nanowire; novel; operation; prevent; prototype; public health relevance; response; social stigma; sound

DESCRIPTION (provided by applicant): Currently, approximately 7 million Americans use hearing aid devices, which usually use compact Zn-air batteries. These batteries are relatively inexpensive, safe to use, and easy to dispose of, but only work for approximately 1 week before needing to be replaced. Practically all other modern gadgets (cell phones, computers, etc.) now utilize rechargeable lithium-ion (Li-ion) batteries, which have lower charge capacity and need frequent (practically daily) recharging. Although frequent recharging may be acceptable for gadget users, it may create potentially a life threating situation for users of medical devices. Th frequent need to replace or recharge hearing aid batteries creates a logistical problem for users, especially for seniors, who constitute the largest segment of hearing aid users. In response to the NIH National Institute on Deafness and Other Communication Disorders (NIDCD) request for new rechargeable batteries for hearing aid devices, Physical Optics Corporation (POC) proposes to develop a new High-Capacity Li-ion Rechargeable (HCLIR) battery. The significant (fourfold) increase in the battery capacity, compare to the current capacity of Li-ion batteries wil be achieved with a new silicon (Si) microporous anode. Si has an outstanding lithium (Li) insertion capacity, which is 10 times higher than conventional graphite, but suffers from large volume changes while absorbing and releasing Li. The proposed anode structure not only significantly increases surface area available for the reaction with Li, but also permits material extension, thus allowing for multiple charge/discharge cycles. As a result of this innovation, the proposed compact battery (size A312) will be capable of storing energy sufficient for approximately 1 week of hearing aid operation without recharging. Users will be able to recharge the battery using the same (or similar) charger they use for their cell phones and other gadgets, with an additional compartment for a small size battery. The cost of the proposed battery will be completely recovered after several months of use, while its service life will be several years long. In Phase I, POC will demonstrate the feasibility of the proposed A312 size battery with a Si microporous anode by optimizing the battery design, fabricating battery prototypes, measuring their capacity, and demonstrating their capability to withstand multiple charge/discharge cycles. In Phase II, POC will optimize the manufacturing technology to reduce battery cost. We will also certify the developed battery according to ANSI/IEC requirements. Successful accomplishment of the proposed development will directly benefit millions of hearing aid users. The proposed technology can be modified easily for use in other medical devices and for a broad commercial market for numerous electronic devices which utilize Li-ion batteries.

描述（申请人提供）：目前，大约有 700 万美国人使用助听设备，这些设备通常使用紧凑型锌空气电池。这些电池相对便宜、使用安全且易于处置，但只能工作大约 1 周，然后就需要更换。实际上，所有其他现代电子产品（手机、电脑等）现在都使用可充电锂离子 (Li-ion) 电池，其充电容量较低，需要频繁（几乎每天）充电。尽管频繁充电对于小工具用户来说可能是可以接受的，但它可能会给医疗设备用户造成潜在的危及生命的情况。频繁更换助听器电池或给助听器电池充电给用户带来了后勤问题，特别是对于占助听器用户最大部分的老年人来说。为了响应 NIH 国家耳聋和其他沟通障碍研究所 (NIDCD) 对助听器新型充电电池的要求，物理光学公司 (POC) 提议开发一种新型高容量锂离子充电 (HCLIR) 电池。与锂离子电池的当前容量相比，新型硅 (Si) 微孔阳极将实现电池容量的显着（四倍）增加。 Si具有出色的锂（Li）嵌入能力，比传统石墨高10倍，但在吸收和释放Li时体积变化较大。所提出的阳极结构不仅显着增加了可与锂反应的表面积，而且允许材料延伸，从而允许多次充电/放电循环。由于这项创新，拟议的紧凑型电池（尺寸 A312）将能够存储足够助听器运行大约 1 周的能量，而无需充电。用户将能够使用与手机和其他小工具相同（或类似）的充电器为电池充电，并有一个用于存放小尺寸电池的额外隔间。所提出的电池的成本将在使用几个月后完全收回，而其使用寿命将长达数年。在第一阶段，POC将通过优化电池设计、制造电池原型、测量其容量并展示其承受多次充电/放电循环的能力，展示所提出的采用硅微孔阳极的A312尺寸电池的可行性。在第二阶段，POC将优化制造技术以降低电池成本。我们还将根据 ANSI/IEC 要求对开发的电池进行认证。拟议开发的成功完成将直接造福数百万助听器用户。所提出的技术可以轻松修改以用于其他医疗设备以及使用锂离子电池的众多电子设备的广阔商业市场。