Bereket Woldegbreal Taklu
@postdoc research fellow
Graduate Institute of Applied Science and Technology
National Taiwan University of Science and Technology
EDUCATION
National Taiwan University of Science and Technology
Wollo University
Bahir Dar University
Gondar University
RESEARCH INTERESTS
Any topics related with
Sulfide solid electrolyte;
Halide solid electrolyte;
Solid electrolyte / Li interface engineering;
Aqueous Zn ion battery;
Anode free lithium metal batteries
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Keseven Lakshmanan, Wei‐Hsiang Huang, Soressa Abera Chala, Chia‐Yu Chang, Sruthi Thiraviam Saravanan, Bereket Woldegbreal Taklu, Endalkachew Asefa Moges, Yosef Nikodimos, Berhanu Degagsa Dandena, Sheng‐Chiang Yang,et al.
Wiley
AbstractDespite the unique advantages of single‐atom catalysts, molecular dual‐active sites facilitate the C‐C coupling reaction for C2 products toward the CO2 reduction reaction (CO2RR). The Ni/Cu proximal dual‐active site catalyst (Ni/Cu‐PASC) is developed, which is a harmonic catalyst with dual‐active sites, by simply mixing commercial Ni‐phthalocyanine (Ni‐Pc) and Cu‐phthalocyanine (Cu‐Pc) molecules physically. According to scanning transmission electron microscopy (STEM) and transmission electron microscopy (TEM) energy dispersive spectroscopy (EDS) data, Ni and Cu atoms are separated, creating dual‐active sites for the CO2RR. The Ni/Cu‐PASC generates ethanol with an FE of 55%. Conversely, Ni‐Pc and Cu‐Pc have only detected single‐carbon products like CO and HCOO−. In situ X‐ray absorption spectroscopy (XAS) indicates that CO generation is caused by the stable Ni active site's balanced electronic state. The CO production from Ni‐Pc consistently increased the CO concentration over Cu sites attributed to subsequent reduction reaction through a C‐C coupling on nearby Cu. The CO bound (HCOO−) peak, which can be found on Cu‐Pc, vanishes on Ni/Cu‐PASC, as shown by in situ fourier transformation infrared (FTIR). The characteristic intermediate of *CHO instead of HCOO− proves to be the prerequisite for multi‐carbon products by electrochemical CO2RR. The work demonstrates that the harmonic dual‐active sites in Ni/Cu‐PASC can be readily available by the cascading proximal active Ni‐ and Cu‐Pc sites.
Yosef Nikodimos, Shi-Kai Jiang, Shing-Jong Huang, Bereket Woldegbreal Taklu, Wei-Hsiang Huang, Gidey Bahre Desta, Teshager Mekonnen Tekaligne, Zabish Bilew Muche, Keseven Lakshmanan, Chia-Yu Chang,et al.
American Chemical Society (ACS)
Bereket Woldegbreal Taklu, Wei-Nien Su, Jeng-Chian Chiou, Chia-Yu Chang, Yosef Nikodimos, Keseven Lakshmanan, Teklay Mezgebe Hagos, Gashahun Gobena Serbessa, Gidey Bahre Desta, Teshager Mekonnen Tekaligne,et al.
American Chemical Society (ACS)
The use of the “Holy Grail” lithium metal anode is pivotal to achieve superior energy density. However, the practice of a lithium metal anode faces practical challenges due to the thermodynamic instability of lithium metal and dendrite growth. Herein, an artificial stabilization of lithium metal was carried out via the thermal pyrolysis of the NH4F salt, which generates HF(g) and NH3(g). An exposure of lithium metal to the generated gas induces a spontaneous reaction that forms multiple solid electrolyte interface (SEI) components, such as LiF, Li3N, Li2NH, LiNH2, and LiH, from a single salt. The artificially multilayered protection on lithium metal (AF-Li) sustains stable lithium stripping/plating. It suppresses the Li dendrite under the Li||Li symmetric cell. The half-cell Li||Cu and Li||MCMB systems depicted the attributions of the protective layer. We demonstrate that the desirable protective layer in AF-Li exhibited remarkable capacity retention (CR) results. LiFePO4 (LFP) showed a CR of 90.6% at 0.5 mA cm–2 after 280 cycles, and LiNi0.5Mn0.3Co0.2O2 (NCM523) showed 58.7% at 3 mA cm–2 after 410 cycles. Formulating the multilayered protection, with the simultaneous formation of multiple SEI components in a facile and cost-effective approach from NH4F as a single salt, made the system competent.
Semaw Kebede Merso, Teshager Mekonnen Tekaligne, Misganaw Adigo Weret, Kassie Nigus Shitaw, Yosef Nikodimos, Sheng-Chiang Yang, Zabish Bilew Muche, Bereket Woldegbreal Taklu, Boas Tua Hotasi, Chia-Yu Chang,et al.
Elsevier BV
Gashahun Gobena Serbessa, Bereket Woldegbreal Taklu, Yosef Nikodimos, Nigusu Tiruneh Temesgen, Zabish Bilew Muche, Semaw Kebede Merso, Tsung-I Yeh, Ya-Jun Liu, Wei-Sheng Liao, Chia-Hsin Wang,et al.
American Chemical Society (ACS)
Due to its good mechanical properties and high ionic conductivity, the sulfide-type solid electrolyte (SE) can potentially realize all-solid-state batteries (ASSBs). Nevertheless, challenges, including limited electrochemical stability, insufficient solid-solid contact with the electrode, and reactivity with lithium, must be addressed. These challenges contribute to dendrite growth and electrolyte reduction. Herein, a straightforward and solvent-free method was devised to generate a robust artificial interphase between lithium metal and a SE. It is achieved through the incorporation of a composite electrolyte composed of Li6PS5Cl (LPSC), polyethylene glycol (PEG), and lithium bis(fluorosulfonyl)imide (LiFSI), resulting in the in situ creation of a LiF-rich interfacial layer. This interphase effectively mitigates electrolyte reduction and promotes lithium-ion diffusion. Interestingly, including PEG as an additive increases mechanical strength by enhancing adhesion between sulfide particles and improves the physical contact between the LPSC SE and the lithium anode by enhancing the ductility of the LPSC SE. Moreover, it acts as a protective barrier, preventing direct contact between the SE and the Li anode, thereby inhibiting electrolyte decomposition and reducing the electronic conductivity of the composite SE, thus mitigating the dendrite growth. The Li|Li symmetric cells demonstrated remarkable cycling stability, maintaining consistent performance for over 3000 h at a current density of 0.1 mA cm-2, and the critical current density of the composite solid electrolyte (CSE) reaches 4.75 mA cm-2. Moreover, the all-solid-state lithium metal battery (ASSLMB) cell with the CSEs exhibits remarkable cycling stability and rate performance. This study highlights the synergistic combination of the in-situ-generated artificial SE interphase layer and CSEs, enabling high-performance ASSLMBs.
Yosef Nikodimos, Martin Ihrig, Bereket Woldegbreal Taklu, Wei-Nien Su, and Bing Joe Hwang
Elsevier BV
Bereket Woldegbreal Taklu, Yosef Nikodimos, Hailemariam Kassa Bezabh, Keseven Lakshmanan, Teklay Mezgebe Hagos, Teshome Assefa Nigatu, Semaw Kebede Merso, Hung-Yi Sung, Sheng-Chiang Yang, She-Huang Wu,et al.
Elsevier BV
Teshome Assefa Nigatu, Hailemariam Kassa Bezabh, Shi-Kai Jiang, Bereket Woldegbreal Taklu, Yosef Nikodimos, Sheng-Chiang Yang, She-Huang Wu, Wei-Nien Su, Chun-Chen Yang, and Bing Joe Hwang
Elsevier BV
Hailemariam Kassa Bezabh, Jeng-Chian Chiou, Teshome Assefa Nigatu, Teklay Mezgebe Hagos, Shi-Kai Jiang, Yosef Nikodimos, Bereket Woldegbreal Taklu, Meng-Che Tsai, Wei-Nien Su, and Bing Joe Hwang
American Chemical Society (ACS)
Electrochemical stability and interfacial reactions are crucial for rechargeable aqueous zinc batteries. Electrolyte engineering with low-cost aqueous electrolytes is highly required to stabilize their interfacial reactions. Herein, we propose a design strategy using glutamic additive and its derivatives with modification of hydrogen-bonding network to enable Zn aqueous battery at a low concentration (2 m ZnSO4 + 1 m Li2SO4). Computational, in situ/ex situ spectroscopic, and electrochemical studies suggest that additives with moderate interactions, such as 0.1 mol % glutamic additive (G1), preferentially absorb on the Zn surface to homogenize Zn2+ plating and favorably interact with Zn2+ in bulk to weaken the interaction between H2O and Zn2+. As a result, uniform deposition and stable electrochemical performance are realized. The Zn||Cu half-cell lasts for more than 200 cycles with an average Coulombic efficiency (CE) of >99.32% and the Zn||Zn symmetrical cells for 1400 h with a low and stable overpotential under a current density of 0.5 mA cm-2, which is better than the reported results. Moreover, adding 0.1 mol % G1 to the Zn||LFP full cell improves its electrochemical performance with stable cycling and achieves a remarkable capacity of 147.25 mAh g-1 with a CE of 99.79% after 200 cycles.
Nigusu Tiruneh Temesgen, Hailemariam Kassa Bezabh, Misganaw Adigo Weret, Kassie Nigus Shitaw, Yosef Nikodimos, Bereket Woldegbreal Taklu, Keseven Lakshmanan, Sheng-Chiang Yang, Shi-Kai Jiang, Chen-Jui Huang,et al.
Elsevier BV
Yosef Nikodimos, Wei-Nien Su, Bereket Woldegbreal Taklu, Semaw Kebede Merso, Teklay Mezgebe Hagos, Chen-Jui Huang, Haylay Ghidey Redda, Chia-Hsin Wang, She-Huang Wu, Chun-Chen Yang,et al.
Elsevier BV
Keseven Lakshmanan, Wei‐Hsiang Huang, Soressa Abera Chala, Bereket Woldegbreal Taklu, Endalkachew Asefa Moges, Jyh‐Fu Lee, Pei‐Yu Huang, Yao‐Chang Lee, Meng‐Che Tsai, Wei‐Nien Su,et al.
Wiley
Electrochemical reduction of carbon dioxide (CO2RR) into value‐added chemicals is a promising tactic to mitigate global warming. However, this process resists catalyst preparation, low faradaic efficiency (FE%) towards multi‐carbon products, and insights into mechanistic understanding. Indeed, it is demonstrated that this Fe single‐atom catalyst (Fe SAC) exists in three oxygen coordination of Fe–(O)3 configuration in Nafion coated functionalized multi‐wall carbon nanotubes (Fe‐n‐f‐CNTs), which is obtained via a simple ionic exchange method under ambient conditions. The electrochemical performance reveals that Fe SACs achieve an FE of 45% and a yield rate of 56.42 µmol cm−2 h−1 at −0.8 VRHE for ethanol. In situ X‐ray analysis reveals that the Fe SACs have variable electronic states and keeps close +3 of the oxidation state at the potential range of CO2RR. The catalytic feature reduces the reaction energy and induces the electrons transferred to the adsorbed products intermediates of *COOH and *OCHO, thus promoting CO. The carboxylic functional group on the CNTs stabilizes the Fe active sites via electrostatic interaction, verified by density functional theory calculations. The yield rate of Fe SACs indicates that the Fe single‐atom site can instantly provide a large CO to help conversion of CO2‐to‐C2 product on the CNTs.
Yosef Nikodimos, Chen-Jui Huang, Bereket Woldegbreal Taklu, Wei-Nien Su, and Bing Joe Hwang
Royal Society of Chemistry (RSC)
Sulfide solid electrolyte (S-SE) based all-solid-state batteries (ASSBs) have received particular attention due to their outstanding ionic conductivity and higher energy density over conventional lithium-ion batteries.
Bereket Woldegbreal Taklu, Wei-Nien Su, Yosef Nikodimos, Keseven Lakshmanan, Nigusu Tiruneh Temesgen, Pei-Xuan Lin, Shi-Kai Jiang, Chen-Jui Huang, Di-Yan Wang, Hwo-Shuenn Sheu,et al.
Elsevier BV
Nigusu Tiruneh Temesgen, Wodaje Addis Tegegne, Kassie Nigus Shitaw, Fekadu Wubatu Fenta, Yosef Nikodimos, Bereket Woldegbreal Taklu, Shi-Kai Jiang, Chen-Jui Huang, She-Huang Wu, Wei-Nien Su,et al.
Elsevier BV
Teshome Assefa Nigatu, Hailemariam Kassa Bezabh, Bereket Woldegbreal Taklu, Bizualem Wakuma Olbasa, Yu-Ting Weng, She-Huang Wu, Wei-Nien Su, Chun-Chen Yang, and Bing Joe Hwang
Elsevier BV