If you’ve ever stood in a lithium-ion battery manufacturing clean room, a copper smelter’s electrolytic tank farm, or a zinc refinery’s process control center, you might have glanced at a quiet, unassuming metal rod hanging just above the liquid electrolyte—rigid, corrosion-resistant, and seemingly unremarkable. That’s a cladding bar for cathodes, a component I’ve supplied for over 12 years as the owner of a specialty metals manufacturing firm, and for most of my early career, I assumed its use was locked firmly in one industry: battery production. How wrong I was. Over time, I’ve worked with clients across sectors that I never would have imagined, and today, I’m here to answer the question I get asked most often: Can a cladding bar for cathode be used in different industries? The short answer is yes, but only when you understand the core purpose of this part, the unique engineering tweaks that make it work, and the risks of cutting corners to adapt a part made for one sector to another. Cladding Bar for Cathode
Let’s start with the basics, because too much misinformation about cladding bars comes from skipping this step. At its core, a cathode cladding bar is an electrical current collector that connects a conductive cathode material to an external power source or circuit. In battery manufacturing, for example, lithium-ion cathode cladding bars are typically made of titanium or a titanium-alloy core clad with a thin layer of platinum or iridium. Wait—why clad? Titanium is cheap, strong, and resistant to corrosion, but pure titanium doesn’t conduct electricity well enough for high-energy battery applications. The precious metal cladding adds the electrical conductivity the cathode needs without the weight or cost of a solid platinum bar, which would be prohibitively expensive for large battery assemblies. The bar is designed to sit partially submerged in the battery’s electrolyte, so it has to resist both the harsh chemical environment of the electrolyte and the steady flow of high amperage for thousands of charge-discharge cycles. Early on, that’s all I supplied: titanium-platinum cladding bars for lithium-ion and lead-acid battery makers. Then, in 2015, a team from a large copper refinery called me, asking for a quote for a cathode cladding bar.
I’ll admit, I almost hung up. To me, cathode parts belonged in clean rooms, not smelters. But the lead refinery engineer, a man named Mark who’d been in electrolytic refining for 28 years, explained that his team was struggling with a persistent problem: their existing cathode connectors corroded within 6 months of use, forcing them to shut down one of their 12 tank houses for 2 weeks to replace 1,200 bars at a time. Traditional copper connectors worked fine… until they didn’t. When copper is exposed to the highly acidic, chloride-rich electrolyte used in copper electrorefining, it forms copper chloride, which is brittle and conductive—wait, conductive, yes, but it creates unwanted side reactions that contaminate the refined copper cathodes. Those side reactions cost the refinery an estimated $2.7 million a year in downgraded copper sales. Mark had heard about titanium-platinum cladding bars from a battery industry conference, and he was willing to test a small batch. We made 50 bars, swapped them into a small test tank, and waited. 18 months later, he called back to say none of the bars had corroded, and the contamination rate had dropped by 92%. Suddenly, battery-grade cathode cladding bars were being used in a heavy metals refinery. That’s when I realized: the core function of a cathode cladding bar is universal—provide a conductive, corrosion-resistant path for current in an electrochemical cell. The only variables are the exact material makeup, the shape of the bar, and its resistance to the specific chemicals in the sector’s electrolyte.
That wasn’t the last time I’d adapt this component for a new industry. In 2018, a team from a large electrolytic water treatment plant reached out. They were using electrochlorination to generate chlorine for municipal water disinfection, and their anode cladding bars (wait, yes, anode, but the cladding tech is the same) were failing constantly. No, they weren’t batteries or refineries—they were treating drinking water. Their electrolyte was a dilute sodium chloride solution, not acid, and they needed a bar that could resist not just chemical corrosion, but also the buildup of biofilms, which act as an insulator and reduce current flow. We tweaked our standard titanium-platinum cladding design. We increased the thickness of the platinum layer to 0.2mm (up from our standard 0.1mm for batteries) to reduce wear from chlorine exposure, and we added a subtle, polished texture to the bar surface to prevent biofilm adhesion. Those bars have been in use at that treatment plant for 6 years now, with zero replacement needs. That’s the thing about cladding technology: it’s a platform, not a one-off part. You swap the cladding layer, adjust the base metal’s strength, and tweak the shape, and it works in almost any electrochemical process that needs a current collector.
But here’s the critical warning: not every cladding bar can be adapted for every industry, and cutting corners will only lead to costly failures. I’ve seen this happen more times than I can count. Last year, a startup in the green hydrogen space tried to use our standard battery-grade titanium-platinum cladding bars for their PEM electrolyzers. They saved 30% on part costs by skipping our custom engineering, and within 3 months, 80% of their bars had cracked. Why? PEM electrolyzers use a solid polymer electrolyte, not a liquid, and they operate at temperatures up to 80°C, far higher than lithium-ion batteries’ typical 25–45°C range. The standard titanium core we use for batteries expands at a different rate than the platinum cladding when heated, leading to microcracks that let the high-temperature, acidic electrolyte seep in and corrode the core. The startup had to shut down their entire production line for a month to replace all parts, costing them over $1.2 million in lost revenue. That’s why when a new client reaches out from a different industry, we don’t just pull a part off the shelf—we conduct a full needs assessment: what’s the electrolyte’s pH, temperature, and chemical composition? What’s the required current density? Will the bar be exposed to physical stress, like being submerged and lifted repeatedly (as it is in refineries) or exposed to vibration (as in stationary battery storage)?
Let’s break down three of the most common industries where cathode cladding bars are used, beyond battery manufacturing, to make this concrete. First, electrolytic metal refining: copper, zinc, and nickel refineries. These sectors use highly acidic, often chloride-rich electrolytes, and the cathode cladding bar here needs to resist both chemical corrosion and the weight of the solid metal that grows on its surface (which can weigh hundreds of pounds). For this application, we use a titanium core clad with a thin layer of ruthenium, not platinum. Ruthenium is cheaper than platinum, has excellent conductivity in acidic conditions, and is more resistant to the wear from peeling solid metal off the bar every 2 weeks. Second, industrial water treatment: electrochlorination for disinfection, electrocoagulation for removing heavy metals from wastewater, and even desalination. Here, the electrolyte is often dilute salt or weakly alkaline, and the bar needs to resist chlorine and biofouling. Our go-to here is a stainless steel core clad with a thin layer of iridium, which is more resistant to chlorine than platinum and easier to polish to prevent biofilm buildup. Third, stationary grid-scale battery energy storage systems (BESS): these are much larger than consumer batteries, with cathode cladding bars that can be 10 feet long and weigh over 50 pounds. For BESS, we use a high-strength titanium alloy core (not pure titanium) clad with a platinum-iridium alloy. The alloy core resists vibration from wind and seismic activity, and the platinum-iridium cladding handles the high current density needed for long-duration energy storage.
I want to be clear: this isn’t a matter of “one size fits all”—it’s a matter of matching the cladding bar’s properties to the specific environment of the industry. The question isn’t “Can a cathode cladding bar be used in different industries?” it’s “Can you engineer a cathode cladding bar to meet the unique demands of your industry?” That’s where my team and I come in. We’ve supplied bars for 17 different sectors in the last 8 years, from lithium-ion and lead-acid batteries to copper and zinc refining, water treatment, green hydrogen electrolyzers, even the emerging field of carbon capture via electrochemical reduction. Last year, we shipped a batch of bars to a company developing electrolysers that turn CO2 into jet fuel—an application I never would have envisioned when I started this business, but which works perfectly because our cladding tech can be tuned to resist the high-temperature, CO2-rich electrolyte they use.
I’ve learned a lot in my 12 years as a cladding bar supplier, but the biggest lesson is that innovation often comes from looking beyond the limits you assume an industry has. When I first started, I thought cathode parts were made for batteries and nothing else. Now, I know they’re a critical component of some of the most important processes in the global economy—from producing the copper that powers our power grids to the water we drink to the green hydrogen that will help us reach net zero. But that doesn’t mean you can take a part from one industry and drop it into another. The engineering has to be precise. You have to test every batch, adjust every layer, and work closely with the client to understand their exact needs.
If you’re working in any industry that uses electrochemical processes and you’re struggling with current collectors that corrode, fail prematurely, or cause unwanted side reactions, we can help. We don’t sell off-the-shelf parts—we engineer custom cathode cladding bars tailored to your specific electrolyte, operating conditions, and performance requirements. We’ve worked with startups and Fortune 500 companies alike, from small battery manufacturers needing 50 bars a month to global refineries ordering 10,000 bars for their tank houses. We test every batch in our in-house lab, simulating the exact conditions your bar will face in your facility, so you don’t have to deal with costly surprises down the line.
If you’re ready to stop dealing with cladding bar failures and start working with a supplier that understands the full potential of this unassuming, critical component, reach out to our team today to discuss your next project. We’ll walk you through the process, answer all your questions, and help you find the right solution for your needs.
Lead Anode Plate References:
- Pollak, A. (2019). Titanium Cladding for Electrochemical Applications: Material Selection and Corrosion Resistance. Journal of Metals, 71(12), 3452–3461.
- Smith, L. (2021). Electrode Components for Industrial Water Treatment: Performance and Durability. Water Research, 198, 117123.
- Gonzalez, M. (2018). Current Collectors for Electrolytic Metal Refining: Challenges and Innovations. Minerals Engineering, 128, 189–197.
- Liu, Y. (2022). Clad Metal Electrodes for Green Hydrogen Production: Material Compatibility and Stability. International Journal of Hydrogen Energy, 47(62), 26789–26801.
- Carter, R. (2020). Corrosion Mitigation in Grid-Scale Energy Storage: The Role of Cladding Materials. Journal of Energy Storage, 32, 101876.
AATI Cathode Co., Ltd.
AATI Cathode Co., Ltd. is one of the leading cladding bar for cathode manufacturers and suppliers in China. We warmly welcome you to buy high-grade cladding bar for cathode made in China here from our factory. All customized products are with high quality and competitive price. Contact us for free sample.
Address: NO. 1, ZHENXING ROAD, BAOJI CITY, SHAANXI, CHINA
E-mail: ivy@bjaati.com
WebSite: https://www.bjcathode.com/
