公开(公告)号：US20220131204A1

公开(公告)日：2022-04-28

申请号：US17572079

申请日：2022-01-10

Applicant: Worcester Polytechnic Institute

Inventor： Yan Wang ,  Diran Apelian ,  Haiyang Zou

IPC: H01M10/54 ,  C22B3/00 ,  C22B26/22 ,  C22B1/24 ,  C22B7/00

Abstract: Cathode material from exhausted lithium ion batteries are dissolved in a solution for extracting the useful elements Co (cobalt), Ni (nickel), Al (Aluminum) and Mn (manganese) to produce active cathode materials for new batteries. The solution includes compounds of desirable materials such as cobalt, nickel, aluminum and manganese dissolved as compounds from the exhausted cathode material of spent cells. Depending on a desired proportion, or ratio, of the desired materials, raw materials are added to the solution to achieve the desired ratio of the commingled compounds for the recycled cathode material for new cells. The desired materials precipitate out of solution without extensive heating or separation of the desired materials into individual compounds or elements. The resulting active cathode material has the predetermined ratio for use in new cells, and avoids high heat typically required to separate the useful elements because the desired materials remain commingled in solution.

公开(公告)号：US20190128811A1

公开(公告)日：2019-05-02

申请号：US16136232

申请日：2018-09-19

Applicant: Worcester Polytechnic Institute

Inventor： Shaymus W. Hudson ,  Diran Apelian ,  Robert DeSaro ,  Joseph C. Craparo

IPC: G01N21/71

Abstract: A molten metal inclusion test apparatus includes a spectroscopic appliance for gathering data indicative of the contents of a quantity of molten metal. Laser induced emissions provide spectral data based on the elements present in the melt. Analysis of a series of samplings, or “shots” of laser induced emissions indicates a presence of elements above a background or expected level. These elements appear as spikes in a graphical rendering of the spectral data, defined by a wavelength of the detected element. Correlation of the elements detected in the same shot indicates a composition of the inclusion, typically a particle of an extraneous compound in the melt. Such spectral analysis provides immediate feedback about melt quality, allowing corrective measures to be taken prior to casting.