Portrait of Muya Cai
HKUST 路 Hong Kong

IN ONE SENTENCE

I turn complex electrochemistry into simple, scalable clean-energy systems.

CURRENT WORK 路 2026

Hydrogen from a flowing cell鈥攏o membrane needed.

At Prof. Qing Chen鈥檚 group at HKUST, I work on a compact active-flow electrolyzer that uses controlled liquid flow to keep hydrogen and oxygen apart.

Renewable-energy-integrated active-flow membraneless electrolyzer exhibitCURRENT PROJECT / ECO ASIA EXPO 2026

ACTIVE-FLOW MEMBRANELESS ELECTROLYZER

A compact solar-to-hydrogen demonstration

The 500 mm cubic exhibit brings the whole process into one clear system: solar input, liquid circulation, membraneless electrolysis, gas collection and hydrogen purification.

  • No membrane lower complexity and material cost
  • Active flow separates product gases
  • Solar ready renewable-energy integration
Membraneless gas-separation principle
01 路 Separate by flowA shaped flow field guides H鈧?and O鈧?to opposite outlets.
Three generations of active-flow membraneless electrolyzer prototypes
02 路 Scale the deviceThree generations鈥攆rom a 5 cm cell to a 35 脳 35 cm prototype.
Solar-powered off-grid membraneless electrolyzer system
03 路 Run off-gridPhotovoltaics, battery storage and hydrogen production in one loop.

RESEARCH IN PICTURES

Three ways zinc becomes useful energy.

Representative figures are drawn directly from my first-author papers.

Panels c to e of the rechargeable zinc-water hydrolysis battery figure
01

HYDROGEN STORAGE

Rechargeable Zn鈥揌鈧侽 battery

Renewable electricity plates zinc. Stored zinc later releases hydrogen and electricity on demand鈥攊n the same electrolyte system.

600+ cycles 路 98.4% H鈧?efficiency
Electrolytic zinc cycle for carbon dioxide conversion
02

CARBON UTILIZATION

CO鈧?to carbon monoxide

Electrolytic zinc links renewable power storage with high-utilization CO鈧?conversion.

98.3% utilization 路 68.8% voltage efficiency
Zinc hydrolysis pathway for hydrogen and salt recovery from seawater
03

SEAWATER & WASTEWATER

Hydrogen without water purification

Space-isolated zinc hydrolysis harvests hydrogen and salts while keeping impurities away from zinc.

99.8% Zn conversion 路 salt recovery
Operando microscopy of zinc electrodeposition at different current densities04 / OPERANDO MICROSCOPY

ELECTRODEPOSITION

Controlling zinc from plate to nanoscale morphology

Real-time microscopy shows how current density and electrolyte chemistry change zinc growth, corrosion and efficiency.

  • >95% current efficiency
  • Real-time growth observation
  • Acidic & alkaline electrolyte comparison

FULL PUBLICATION CV

Read the research.

Seven first-author papers and more than twenty collaborative publications. Every title opens a precise Google Scholar search.

02

CO-AUTHORED PUBLICATIONS

22 representative papers

Show / hide

EDUCATION & APPOINTMENT

From metallurgy to clean energy.

A multidisciplinary path across metals, environment and electrochemical devices.

2026 鈥?PRESENT

POSTDOCTORAL RESEARCH

Hong Kong University of Science and Technology

MAE 路 Prof. Qing ChenActive-flow membraneless electrolyzers for green hydrogen.
2022 鈥?2025

PH.D. 路 ENVIRONMENTAL ENGINEERING

Wuhan University

Prof. Huayi Yin & Prof. Dihua WangZinc-driven electro-thermal reduction and circular resource technologies.
2019 鈥?2022

M.ENG. 路 METALLURGICAL ENGINEERING

Northeastern University

Prof. Huayi YinMolten-salt electrolysis and silicon-based battery materials.
2015 鈥?2019

B.ENG. 路 METALLURGICAL ENGINEERING

Northeastern University

Metal extraction & separationFoundations in iron, aluminium, copper, zinc and lead metallurgy.

BEYOND THE LAB

Curious about the world, serious about the work.

I come from Taizhou, Jiangsu, China. I enjoy fitness, basketball and travel. New places often bring the same thing I value in research: a different way to see a familiar problem.

Muya Cai in Singapore
Singapore
Muya Cai in Shanghai
Shanghai

CONTACT

Let鈥檚 make clean energy simpler.

GOOGLE EMAILcaimuya@gmail.com 鈫?/b>
WECHAT / QQ499102160

Originally from Taizhou, Jiangsu, China
Based in Hong Kong SAR
Postdoctoral Researcher 路 HKUST MAE