Sf Motors, Inc.

Chongqing Jinkang New Energy Automobile Co., Ltd.

Chongqing Jinkang Powertrain New Energy Co., Ltd.

Scott Monismith

Yifan Tang

Ying Liu

Brennan Campbell

Various methods and techniques for enhancing a silicon-containing anode for a battery cell are presented. The methods may include providing a silicon-containing anode having reversible electrochemical capabilities including a silicon-containing material and an anode material compatible with a lithium-ion battery chemistry having porous and conductive mechanical properties. The methods may also include enriching a surface layer of the silicon-containing anode with sodium ions to intersperse the sodium ions between silicon atoms of the silicon-containing material. The methods may also include displacing the sodium ions with potassium ions to form a compression layer in the silicon-containing anode. The potassium ions may place the silicon atoms of the silicon-containing material in a pre-compressive state to counteract internal stress exerted on the silicon-containing material.

Systems and methods for potassium enhancing silicon-containing anodes for improved cyclability

Embodiments disclosed herein generally relate to a microporous separator with a pore geometry that creates a low or no tortuosity architecture. In one embodiment, a battery cell may comprise of an anode layer, a cathode layer, and a separator layer positioned between the cathode layer and the anode layer. The separator layer may be comprised of one or more block copolymers. The block copolymers that make up the separator layer may be materials that self-align into a vertical nanostructure. The vertical nanostructures may allow ions within the battery cell to flow in a vertical path between the cathode and anode. This vertical path my create a low or no tortuosity environment within the battery cell.

Block copolymer separators with nano-channels for lithium-ion batteries

Various methods and techniques for enhancing a silicon-containing anode for a battery cell are presented. The methods may include providing a silicon-containing anode having reversible electrochemical capabilities including a silicon-containing material and an anode material compatible with a lithium-ion battery chemistry having porous and conductive mechanical properties. The methods may also include enriching a surface layer of the silicon-containing anode with sodium ions to intersperse the sodium ions between silicon atoms of the silicon-containing matieral. The methods may also include displacing the sodium ions with potassium ions to form a comrpession layer in the silicon-containing anode. The potassium ions may place the silicon atoms of the silicon-containing material in a pre-compressive state to counteract internal stress exerted on the silicon-containing material.

A battery cell includes a cathode layer and an anode layer. The anode layer includes anode particles, and a plurality of the anode particles have non-spanning cracks induced in the anode particles from cyclic tension applied to the anode layer prior to the anode layer being combined with the cathode layer in the battery cell. The battery cell also includes a case, where the cathode layer and the anode layer are housed within the case.

Growing community of inventors

Santa Clara, CA, United States of America

Scott Monismith