A redox flow battery is an energy storage device that stores and releases electrical energy through the redox reactions of active species dissolved in liquid electrolytes. Its most prominent feature is the independent scalability of power and energy capacity, making it a highly promising large-scale grid storage technology with advantages such as high safety, long cycle life, and easy scalability. Among them, the all-vanadium redox flow battery (VRFB) has attracted widespread attention because it uses vanadium ions for both the positive and negative electrodes, thus eliminating the issue of cross-contamination. Meanwhile, the non-aqueous organic redox flow battery (NAORFB) can break the voltage limitations of traditional aqueous batteries, offering a higher energy density. Our laboratory has recently achieved several pioneering breakthroughs in the field of flow batteries. For VRFBs, we developed a dual-functional nitrogen-doped tungsten carbide nanowires (N-WC NWs) catalyst through nanostructure engineering, wherein a single material can efficiently catalyze redox reactions at both the positive and negative electrodes simultaneously. Additionally, we innovatively proposed a tungstated zirconia catalyst derived from a metal-organic framework (MOF) precursor. By forming stable W-O-Zr chemical bonds, this strategy significantly strengthens the adhesion between the active components and the substrate, thereby preventing the active materials from peeling off due to electrolyte flushing and greatly enhancing the energy efficiency and stability of the battery at high current densities. At the system engineering level, our team invented a cable-tie packaging technology, successfully developing a 5 kW-class localized high-power stack with a volume reduction of approximately 66%. Regarding NAORFBs, we designed N-isobutylphenothiazine (iBuPT) through molecular engineering. By utilizing the steric hindrance effect to effectively stabilize radical cations, we successfully increased the open-circuit voltage of the battery to 2.25 V, solving the critical pain point of short cycle life in organic systems.
π Latest Publications
Zih-Jhong Huang, Hailegnaw Gizaw Workie, Aknachew Mebreku Demeku, Johan Nabiel Raihan, Sun-Tang Chang, Tai-Chin Chiang, Chen-Hao Wang* Β· Surface & Coatings Technology, 527 (2026) 133385
Hailegnaw Gizaw Workie, Aknachew Mebreku Demeku, Daniel Manaye Kabtamu, Anteneh Wodaje Bayeh, Zih-Jhong Huang, Johan Nabiel Raihan, Sun-Tang Chang, Chen-Hao Wang* Β· Chemical Engineering Journal Advances, 26 (2026) 101115
Aknachew Mebreku Demeku, Yu-Ling Wang, Daniel Manaye Kabtamu, Hailegnaw Gizaw Workie, Anteneh Wodaje Bayeh, Zih-Jhong Huang, Ning-Yih Hsu, Hung-Hsien Ku, Yao-Ming Wang, Chen-Hao Wang* Β· Journal of Power Sources, 666 (2026) 239082
Aknachew Mebreku Demeku, Daniel Manaye Kabtamu, Anteneh Wodaje Bayeh, Krishnakant Tiwari, Zih-Jhong Huang, Ning-Yih Hsu, Hung-Hsien Ku, Sun-Tang Chang, Ying-Rui Lu, Chen-Hao Wang* Β· Journal of Energy Storage, 141 (2026) 119119
Krishnakant Tiwari, Chen-Hao Wang, Bih-Show Lou, Aknachew Mebreku Demeku, Igamcha Moirangthem, Shiqi Wang, Ismail Rahmadtulloh, Chaur-Jeng Wang, Wenyi Huo, Jyh-Wei Lee Β· Journal of Power Sources, 654 (2025) 237826
Song-Yu Chen, Yu-Lin Kuo, Chen-Hao Wang, Tai-Chin Chiang Β· Applied Surface Science, 695 (2025) 162874
Zih-Jhong Huang, Daniel Manaye Kabtamu, Aknachew Mebreku Demeku, Guan-Cheng Chen, Ning-Yih Hsu, Hung-Hsien Ku, Yao-Ming Wang, Tai-Chin Chiang, Chen-Hao Wang* Β· ChemElectroChem, 12 (2025) e202400477
Aknachew Mebreku Demeku, Chun-Hong Guo, Daniel Manaye Kabtamu, Zih-Jhong Huang, Guan-Cheng Chen, Anteneh Wodaje Bayeh, Chen-Hao Wang* Β· Chemical Engineering Journal, 505 (2025) 159170
Anteneh Wodaje Bayeh, Daniel Manaye Kabtamu*, Aknachew Mebreku Demeku, Guan-Cheng Chen, Chen-Hao Wang* Β· Journal of Energy Storage, 102 (2024) 114026
Belay Getahun Tegegne, Anteneh Wodaje Bayeh, Daniel Manaye Kabtamu*, Aknachew Mebreku Demeku, Chen-Hao Wang** Β· Chemical Engineering Journal, 501 (2024) 157792
Yun-Ting Ou, Daniel Manaye Kabtamu, Keseven Lakshmanan, Guan-Cheng Chen, Zih-Jhong Huang, Ning-Yih Hsu, Hung-Hsien Ku, Yao-Ming Wang, Chen-Hao Wang* Β· Surface & Coatings Technology, 480 (2024) 130574
π Defect-rich high-entropy spinel oxide catalyst for efficient vanadium redox flow battery
Xun-Hong Xiao, Daniel Manaye Kabtamu**, Aknachew Mebreku Demeku, Guan-Cheng Chen, Yun-Ting Ou, Zih-Jhong Huang, Ning-Yih Hsu, Hung-Hsien Ku, Yao-Ming Wang, Chen-Hao Wang* Β· Journal of Power Sources, 597 (2024) 234178
π Surface Electroactive Sites of Tungstated Zirconia Catalysts for Vanadium Redox Flow Batteries
Aknachew Mebreku Demeku, Daniel Manaye Kabtamu*, Guan-Cheng Chen, Yun-Ting Ou, Zih-Jhong Huang, Tai-Chin Chiang, Hsin-Chih Huang, Chen-Hao Wang* Β· ACS Applied Materials & Interfaces, 16 (2024) 7047β7056
Krishnakant Tiwari, Chen-Hao Wang, Bih-Show Lou, Chaur-Jeng Wang, Igamcha Moirangthem, Ismail Rahmadtulloh, Jyh-Wei Lee* Β· Journal of Energy Storage, 94 (2024) 112344
π High-Entropy Oxide of (BiZrMoWCeLa)Oβ as a Novel Catalyst for Vanadium Redox Flow Batteries
Aknachew Mebreku Demeku, Daniel Manaye Kabtamu*, Guan-Cheng Chen, Yun-Ting Ou, Zih-Jhong Huang, Ning-Yih Hsu, Hung-Hsien Ku, Yao-Ming Wang, Chen-Hao Wang* Β· ACS Applied Materials & Interfaces, 16 (2024) 10019β10032
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