公开(公告)号：US20200024767A1

公开(公告)日：2020-01-23

申请号：US16040035

申请日：2018-07-19

Applicant: GM Global Technology Operations LLC

Inventor： Zhongyi Liu ,  Louis G. Hector, JR. ,  Xiaosong Huang ,  Nicholas P. Pieczonka ,  Ingrid A. Rousseau ,  Michael K. Carpenter

IPC: C30B7/14 ,  C30B29/40 ,  C01B21/06

Abstract: Systems and methods for growth of multi-component single crystals are described. A first solution is flowed over a surface of a seed crystal coupled to a nozzle such that a plurality of first ions solvated in the first solution and a plurality of second ions in a second solution combine on the surface of the seed crystal to grow the single-crystal thereon. The first solution and the second solution are immiscible. A feed tank is fluidly coupled to the at least one nozzle and includes the first solution. In some aspects, the nozzle is configured to flow both the first solution and the second solution over the seed crystal.

公开(公告)号：US10320004B2

公开(公告)日：2019-06-11

申请号：US15593383

申请日：2017-05-12

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Anusorn Kongkanand ,  Michael K. Carpenter

IPC: H01M8/10 ,  H01M4/88 ,  H01M4/92 ,  H01M8/1039 ,  H01M8/1032 ,  H01M8/1004 ,  C08J5/22 ,  B01J39/20 ,  B01J47/12 ,  H01M4/86 ,  H01M8/1018

Abstract: A method of making a fuel cell including the following steps: comprising: (a) mixing carbon nanotubes (CNT) with an initial dispersion, wherein the initial dispersion includes an ionomer; (b) heating and stirring the initial dispersion to form a CNT-ionomer composite suspension; (c) after forming the CNT-ionomer composite suspension, mixing the CNT-ionomer composite suspension with an electrode catalyst solution to form an electrode ink, wherein the electrode catalyst solution includes a carbon black powder and a catalyst supported by the carbon black powder; and (d) coating a proton exchange membrane with the electrode ink to form the fuel cell electrode.

公开(公告)号：US20160020453A1

公开(公告)日：2016-01-21

申请号：US14332184

申请日：2014-07-15

Applicant: GM Global Technology Operations LLC

Inventor： Zhongyi Liu ,  Xingcheng Xiao ,  Michael K. Carpenter

IPC: H01M4/04 ,  H01M4/583 ,  H01M4/36 ,  H01M4/1391 ,  H01M4/38

CPC classification number: H01M4/0402 ,  H01M4/134 ,  H01M4/1391 ,  H01M4/1395 ,  H01M4/366 ,  H01M4/386 ,  H01M4/583 ,  H01M4/625 ,  H01M2004/027 ,  H01M2220/10 ,  H01M2220/30

Abstract: In an example method, a transition metal precursor is selected so its transition metal has a diffusion rate that is slower than a diffusion rate of silicon. An aqueous mixture is formed by dissolving the precursor in an aqueous medium, and adding silicon particles to the medium. The mixture is exposed to a hydroxide, which forms a product including the silicon particles and a transition metal hydroxide precipitate. The product is dried. In an inert or reducing environment, silicon atoms of the silicon particles in the dried product are caused to diffuse out of, and form voids in and/or at a surface of, the particles. At least some silicon atoms react with the transition metal hydroxide in the dried product to form i) a SiOx (0

Abstract translation: 在示例性方法中，选择过渡金属前体，使得其过渡金属具有比硅的扩散速率慢的扩散速率。 通过将前体溶解在水性介质中并将硅颗粒添加到介质中来形成含水混合物。 将混合物暴露于氢氧化物，其形成包括硅颗粒和过渡金属氢氧化物沉淀物的产物。 产品干燥。 在惰性或还原环境中，使干燥产物中的硅颗粒的硅原子扩散到颗粒内和/或表面上形成空隙。 至少一些硅原子与干燥产物中的过渡金属氢氧化物反应以形成i）硅颗粒上的SiO x（0