GM and OneD Battery Sciences collaborate on joint R&D of silicon anode expertise for Ultium cells


Normal Motors and OneD Battery Sciences signed a joint analysis improvement settlement targeted on the potential use of OneD’s silicon nanotechnology in GM’s Ultium battery cells to drive important will increase in vitality density for longer vary and decreased value. GM Ventures and Volta Power Applied sciences additionally participated in OneD’s Sequence C funding spherical, which the corporate not too long ago closed at $25 million.

The main focus of the collaboration is OneD’s SINANODE platform. Silicon can retailer ten instances the vitality of graphite alone but earlier makes an attempt to incorporate extra silicon within the anode confronted challenges of silicon enlargement and breakage.

Utilizing silane, OneD infuses silicon nanowires utilizing current CVD equipment into EV-grade graphite. The silicon nanowires fill the floor and the interior pores of the graphite, making the silicon accessible to the lithium ions.


With the infused silicon evenly distributed and completely embedded into the graphite, the silicon nanowires have an out there reversible capability of three,250mAh/g and a decrease value per kWh than graphite alone. SINANODE expertise permits moist or dry electrode coating, providing additional value reductions.

ncreasing vitality density can open the door to smaller, lighter, extra environment friendly battery packs that might obtain increased driving vary at decrease value.

GM designed Ultium to be a supremely versatile platform so we will repeatedly enhance our cells as battery expertise advances. Our collaboration with OneD will deal with efforts to proceed developments in EV vary, efficiency and value.

—Kent Helfrich, GM chief expertise officer, vice chairman of GM analysis and improvement, and president of GM Ventures

The collaboration on silicon anode expertise is believed to be the primary of its type between two US firms. GM is quickly scaling its Ultium EV Platform to succeed in 1 million models of annual EV manufacturing capability in North America by 2025. Earlier this yr, GM’s first Ultium Cells three way partnership battery plant started manufacturing in Ohio, with two extra US vegetation underneath building and a fourth additionally deliberate.

On the similar time, GM is constructing on greater than a decade of superior battery analysis and improvement with its new Wallace Battery Cell Innovation Heart in Warren, Michigan, which was accomplished earlier this yr to assist ramp up considerably improvement and manufacturing of next-generation Ultium batteries, together with manufacturing strategies that may rapidly be deployed at battery cell manufacturing vegetation.

Fifteen years of OneD analysis and improvement has led to a portfolio of greater than 240 granted patents. This allows OneD’s enterprise mannequin to heart on licensing the SINANODE expertise to industrial companions and scale manufacturing sooner and at a decrease value. Given a licensing enterprise mannequin and low operational prices, Sequence C funds can be used to proceed SINANODE analysis and improvement, whereas advancing pilot manufacturing and offering OEMs and battery producers a seamless integration into the manufacturing of EV batteries through licensed manufacturing companions.


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