Exhibit 99.9 

William M. Cobb & Associates, Inc.

Worldwide Petroleum Consultants

12770 Coit Road, Suite 907 (972) 385-0354

Dallas, Texas 75251 Fax: (972) 788-5165

CONSENT of QUALIFIED PERSON

I, Robert E. Williams, Jr., consent to the public filing of the technical report titled South West Arkansas Project Pre-Feasibility Study and dated 18^th September 2023 (the “Technical Report 09/2023”) by Standard Lithium Ltd and any extracts from or a summary of the Technical Report 09/2023.

I certify that I have read the press release dated 8^th August 2023 issued by Standard Lithium Ltd, (the "Disclosure") in which the findings of Technical Report 09/2023 are disclosed. The Disclosure fairly and accurately represent the information in the Sections of the Technical Report 09/2023 for which I am responsible.

Dated this 18^th September 2023.

Signature of Qualified Person Robert E. Williams, Jr., PG, CPG Name of Qualified Person