Board of Directors

Mark Winfield
Executive Chair

Mr Winfield is a globally recognised leader with over 40 years of experience in commercialising innovation and technology. He has developed award-winning solutions across diverse industries including food aid, tourism, housing, and sustainable development.

Mr Winfield is a Fellow of the Australian Institute of Company Directors.

Gary Walsh
General Manager

Gary is an experienced company director and senior engineer with verifiable success in identifying and commercialising new technologies, establishing and structuring companies, and driving product development across a range of industries.  As a qualified engineer (Bachelor of Engineering – Mechanical & Computing, and Master of Engineering – Systems) Gary has been able to draw on his extensive real-world experience to guide the successful production of White Graphene at commercial scale for the first time.

He is a strategic decision maker, experienced team leader, mentor and motivator.

Gary was also instrumental in bringing other technologies to the PPK Group of Companies including Li-S Energy, White Graphene and PowerPlus Energy Pty Ltd.

His past experience includes Director appointments in companies in the Aviation, Innovation, Building and FMCG Sectors.  Previous roles include 5 years as CTO in the Modular Building Industry, 10 years as Senior Design Engineer for General Motors, and 7 years as a Commissioned Officer in the Australian Army.

Greg Pullen
Non-executive Director
PhD, MBA, GAICD

Dr Pullen comes with over 30 years of business and strategic development experience in the medical devices, pharmaceutical and biotechnology sectors.

Greg has worked for major Australian companies such as CSL, where he was a member of the commercial team that licensed the GardasilTM HPV vaccine to Merck. He has created companies with significant equity value, and has licensed many technologies to major companies.

He is currently the Chair of private biotechnology company Virex Pharma Limited, a Non-Executive Director of White Graphene Limited, and consults on intellectual property and commercialisation issues with major Australian universities and other organisations.

The Team

Luhua Li
CTO & Lead Scientist – S
PhD, BE

Dr Li is a seasoned researcher and leading expert on White Graphene and BNNT. He has over a decade’s worth of publications, including several book chapters and near a hundred journal articles. For his efforts, he has been recognised with the David Syme Research Prize (2019), ARC DECRA (2016-2020), and the Alfred Deakin Research Fellowship (2014-2015).

Luhua’s research focuses on a wide variety of physical and chemical properties of two-dimensional (2D) nanomaterials, especially boron nitride (BN) nanosheets. He has been exploring the synthesis, characterization and a wide range of applications of boron nitride nanomaterials for 20 years.

Luhua holds a PhD in Physics from the Australian National University, and a Bachelor’s in Engineering in Materials Science from the Beijing Institute of Technology.

Sarah Price
CFO
CA, BCom

Sarah has over 20 years’ experience as a financial controller, including key roles at Technology One, Cardno, Xstrata and PwC. Across these positions, Sarah has built extensive knowledge of group finance and taxation with a focus on global reporting, financial strategy and risk management. In her role as CFO, Sarah works across the PPK Group, Li-S Energy, White Graphene, BNNT Technology Ltd, Craig International Ballistics and Advanced Mobility Analytics Group.

Sarah holds a Bachelors of Business from Queensland University of Technology, is a Chartered Accountant and Affiliate of the Governance Institute of Australia.

Sarah was appointed Chief Financial Officer on 23 May 2023 following time serving as Group Financial Controller.

White Graphene Ltd
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